HARMONY III™ zoning system (X9953) - Lennox International -

HARMONY III™ zoning system (X9953)Installation, Setup and User Guide

507936-01 7/2019 Supersedes 2/2019

2019© Lennox Industries Inc. Dallas, Texas, USA

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1.10.9.SystemConfiguration/E-HeatStages) ................................................................ 13

1.10.9.1. GasFurnaceandAirConditioning ...................................................... 13

1.10.9.2. HeatPumpwithElectricBackupHeat ................................................ 13

1.10.9.3. HeatPump-DualFuelheating,1-stageor2StageHeatPumpandGasFurnace ....................................................................................... 13

1.11.CommonSystemComponentWiring ...............................................................13

1.11.1.DampersandDamperTransformer .................................................................... 13

1.11.2.DischargeAirSensor(DAS)Probe ..................................................................... 14

1.12.ComponentSpecificWiring ..............................................................................14

1.12.1.ZoneControlTransformerPhasing ..................................................................... 14

1.12.2.Thermostat .......................................................................................................... 15

1.12.3.GasFurnace ....................................................................................................... 15

1.12.4.AirConditionerUnit ............................................................................................. 15

1.13.MinimumCFMinVariableSpeedFurnaceandAirHandlers ...........................16

1.14.SystemFlowDiagrams ....................................................................................17

2. Heat Pump ............................................................................. 18

2.1.InstallingHeatPumpandAccessories ...............................................................18

2.1.1. EquipmentInstallation ......................................................................................... 18

2.1.2. PressureSwitch .................................................................................................. 18

2.1.3. PressureSwitchWiring ...................................................................................... 18

2.1.4. Tee(HighPressureSwitch;HeatPumpsonly) ................................................... 18

2.1.5. BalancePointSensor(OutdoorThermostat) ...................................................... 18

2.1.6. DefrostTemperingKit .......................................................................................... 19

2.2.VariableSpeedMotor(VSM)AirHandlerandHeatPump-Option2(ZoningSystem) .................................................................................................20

2.3.HeatPumpSystemStart-UpandCheckout.......................................................21

2.3.1. PoweringtheSystem(AllSystems) .................................................................... 21

2.3.2. Checkouts ........................................................................................................... 21

2.3.2.1. TypicalHeatPumpHeatingCheckout(SingleZone) .......................... 21

2.3.2.2. TypicalHeatPumpHeatingCheckout(MultipleZone) ....................... 22

2.3.2.3. TypicalHeatPumpHeatingCheckout(CentralMode) ....................... 23

2.4.HeatPumpSystemStart-UpandCheckout.......................................................24

2.4.1. TroubleshootingDiagram .................................................................................... 24

2.4.2. HeatPumpHeatingOperation ............................................................................ 25

2.4.3. DefrostOperations .............................................................................................. 25

3. Gas Furnace .......................................................................... 26

3.1.TypicalWiringforVariable-SpeedGasFurnaceandOutdoorACUnit-Option1 26

Table of Contents1. General ..................................................................................... 4

1.1.ShippingandPackingList ....................................................................................4

1.2.AcronymsUsed ....................................................................................................4

1.3.AdditionalPartsRequired ....................................................................................4

1.4.Introduction ..........................................................................................................4

1.5.ResidentialZoneControlSystem-OverviewofFieldWiring ..............................5

1.6.SystemComponents ............................................................................................5

1.6.1. ZoneControlSystem ............................................................................................ 5

1.6.2. DischargeAirSensor(DAS) .................................................................................. 6

1.6.3. Thermostats .......................................................................................................... 6

1.6.4. Transformers ......................................................................................................... 6

1.6.5. Dampers ................................................................................................................ 6

1.6.6. RemoteVacationSwitch ....................................................................................... 6

1.7.InstallationPlanningandSelectingHeatingandCoolingEquipment ..................7

1.7.1. InstallationConsiderations ................................................................................... 7

1.7.2. VariableSpeedBlowerMotor(VSM) .................................................................... 7

1.7.3. Selecting/InstallingIndoorandOutdoorUnits ...................................................... 7

1.8.OptionalDehumidificationAccessories ................................................................7

1.9.InstallingZoneControlComponents ....................................................................7

1.9.1. DischargeAirSensor(DAS) .................................................................................. 7

1.9.2. ZoneControlPanel ............................................................................................... 8

1.9.3. Thermostats .......................................................................................................... 8

1.9.4. Transformer ........................................................................................................... 8

1.9.5. Dampers ................................................................................................................ 8

1.9.6. ZoneLinking .......................................................................................................... 8

1.10.ZoneControlPanelJumpers..............................................................................9

1.10.1.SetupforControllingEquipmentStagingandVolumeofAirtoZones ................. 9

1.10.2.PIABJumpersAffectBlowerOperation ................................................................ 9

1.10.3.UpgradingfromHarmonyIIzoningsystem? ....................................................... 10

1.10.4.Zone1PIABJumpers–140ºFDAS ................................................................... 10

1.10.5.DeterminingPIABJumperSettings ..................................................................... 10

1.10.6.ContinuousAirReductionJumpers ......................................................................11

1.10.7.HeatingAirReductionJumpers ............................................................................11

1.10.8.Heat/CoolStaging ................................................................................................11

1.10.8.1. HeatingStagingTemperatureJumper .................................................11

1.10.8.2. CoolingStagingTemperatureJumper ................................................ 12

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3.2.FurnaceVariableSpeedMotorElectricalAdjustments ......................................27

3.3.VariableSpeedMotorFurnaceSystemOperations ...........................................27

3.3.1. Operation ............................................................................................................ 27

3.3.2. IntegratedFurnaceControlW2terminaltoHarmonyIIIzoningsystem Control ................................................................................................................. 28

3.3.3. InstallationSetupWorksheets ............................................................................. 29

3.3.3.1. SLP98V—Cooling/Heating(Non-HeatPumpApplications) .............. 29

3.3.3.2. SL280V,SL280NV,EL296VandSL297NV—Cooling/Heating (Non-HeatPump) ................................................................................ 30

3.3.4. ZoneControlOperationinaGasFurnaceSystem ............................................. 31

3.3.4.1. ZoneThermostats ............................................................................... 31

3.3.4.2. BalancePointSetting .......................................................................... 31

3.3.4.3. ZoneMode .......................................................................................... 31

3.3.4.4. Central(Vacation)Mode ..................................................................... 31

3.3.4.5. CoolingOperation ............................................................................... 31

3.3.5. InstallationSetupWorksheetsforHoneywell2-StageIFCControl—Cooling/Heating(Non-HeatPump) ................................................................................... 32

3.4.FurnaceSystemStart-UpandCheckout ...........................................................33

3.4.1. Start-UptheSystem(AllModels) ........................................................................ 33

3.4.2. Checkouts ........................................................................................................... 33

3.4.2.1. TypicalGasHeatingCheckout(SingleZone) ..................................... 33

3.4.2.2. TypicalGasHeatingCheckout(MultipleZone) ................................... 34

3.4.2.3. TypicalGasHeatingCheckout(CentralMode) ................................... 35

3.5.ZoningSystemwithGasFurnaceTroubleshooting-Option1...........................36

3.5.1. TroubleshootingDiagrams .................................................................................. 36

3.5.2. GasHeatingOperation ....................................................................................... 38

3.5.3. DischargeAirUpperLimitandDifferentialTemperatures ................................... 38

4. Air Handlers ........................................................................... 39

4.1.VariationsonCommonACUnitApplications .....................................................39

4.1.1. Heating/CoolingEquipmentInstallation .............................................................. 39

4.1.2. AirHandlerWiring ............................................................................................... 39

4.1.3. Variations ............................................................................................................ 39

4.2.ElectricalAdjustments ........................................................................................40

4.2.1. CommunicatingIndoorControl ........................................................................... 40

4.2.2. Non-CommunicatingIndoorControl .................................................................... 40

4.2.3. InstallationWorksheets ....................................................................................... 42

4.2.3.1. Cooling/HeatingwithElectricStripHeat(Non-HeatPump) ................ 42

4.2.3.2. HeatPump—ElectricStripHeat ....................................................... 44

4.2.3.3. CoolingOnlyorCoolingwithHotWaterCoil(Non-HeatPump) ......... 46

5. Dual Fuel (Option 3) .............................................................. 48

5.1.ZoneControlSystemWiring-Option3 .............................................................48

5.2.DualFuelSystemStart-UpDefrostTemperatingSensorPlacementandCheckout ............................................................................................................49

5.2.1. Start-UptheSystem(AllModels) ........................................................................ 49

5.2.2. DefrostTemperatingSensorPlacement ............................................................. 49

5.2.3. Checkouts ........................................................................................................... 50

5.2.3.1. TypicalDualFuelGasHeating(SingleZone) ..................................... 50

5.2.3.2. TypicalDualFuelGasHeating(MultipleZone) .................................. 51

5.2.3.3. TypicalDualFuelGasHeating(CentralMode) .................................. 52

5.3.ZoningSystemwithDualFuelTroubleshooting-Option3 ................................53

5.3.1. TroubleshootingDiagram .................................................................................... 53

5.3.2. DualFuelOperation(BelowBalancePoint) ........................................................ 54

5.3.3. DischargeAirUpperLimitandDifferentialTemperatures ................................... 54

5.3.4. DualFuelOperation(AboveBalancePoint) ....................................................... 55

5.3.5. DefrostOperation ................................................................................................ 55

5.3.6. InstallationSetupWorksheets ............................................................................. 56

5.3.6.1. DualFuel-IndoorUnitHoneywell2-StageIFCControland HeatPump .......................................................................................... 56

5.3.6.2. DualFuel-SLP98VariableCapacityandHeatPump ........................ 57

5.3.6.3. DualFuel-VariableSpeedSL280V,EL296V,SL297NVandHeatPump .......................................................................................... 58

6. Troubleshooting .................................................................... 59

6.1.OperationandTroubleshootingIndicators .........................................................59

6.1.1. ZoneControlPanelLEDs ................................................................................... 59

6.1.2. FaultRecallandTimeDelayOverride ................................................................ 60

6.1.3. TimeDelays ........................................................................................................ 60

6.1.4. DischargeAirProbeCheckout(AllSystems) ...................................................... 60

6.1.5. BlowerSpeedCheckout ...................................................................................... 61

6.2.DiagnosticLEDErrorCodes ..............................................................................62

6.3.AirDeliveredByBlower .....................................................................................63

6.3.1. Formulas ............................................................................................................. 63

6.3.2. PIABCalculationWorksheet ............................................................................... 65

7. User Guide ............................................................................. 66

7.1.WhatistheHarmonyIII™zoningsystem? .......................................................66

7.2.WhatdoestheHarmonyIII™zoningsystemconsistof?...................................66

7.3.HowdoIsettheControlCenterSwitches? ......................................................66

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7.4.HowdoIusetheThermostatControls? .............................................................66

7.5.HowdoIusetheCentral(Vacation)Mode? ......................................................66

7.6.HowdoIusetheZoneMode? ...........................................................................67

7.7.HowareZonesDetermined? .............................................................................67

7.8.HowdoIusetheOptionalHumiditrol®DehumidificationAccessory? ................67

7.9.EnablingandDisablingHumiditrolSettinginThermostat ..................................67

7.10.HumiditrolUserAdjustmentisalsoavailableundertheUserSettings.............67

7.11.OwnerReminder! ............................................................................................67

7.12.Thermostatreplacement ..................................................................................67

7.13.Maintenance .....................................................................................................67

7.14.HomeownersZoneInformationRecord ...........................................................68

1. General

1.1. Shipping and Packing List

Table 1. Packing ListQuantity Description

1 HarmonyIIIzoningsystemunit

1 DischargeAirSensor

1 InstallationInstruction

1 Warranty(W-031-L2-02)

1.2. Acronyms Used

Table 2. AcronymsAcronym Description

AC AirConditioner

CFM CubicFeetperMinute

DAS DischargeAirSensor

DF DownFlow

EDA EnhancedDehumidificationAccessory

HZA HumiditrolZoningAccessoryKit

IFC IntegratedFurnaceControl

PIAB PercentageintoAdjustmentBand

PWM PulseWidthModulated

UH UpFlow

VSM VariableSpeedMotor

1.3. Additional Parts Required

Table 3. Additional PartsQuantity Description

Applicationspecific

Transformer

Dampers

Thermostats

BalancePointSensorkit(10Z23)

Pressureswitch(ForHeatPumpOption):HFC-22(27W12);HFC-410A(27W13

TeeforvaporlineHighPressureSwitch(87071)

DefrostTemperingKit(67M41)

Humiditrol®EnhancedDehumidificationAccessory(EDA),EDA-024B(94M41),EDA-036C(94M42),EDA-060D(94M43)

Humiditrol® ZoningAccessoryKit(39W67)(requiredifHumiditrol®EDA,above,isused)

NOTE: Due to Lennox’ ongoing commitment to quality, features and options are subject to change without notice and without incurring liability. Improper installation, adjustment, alteration, service or maintenance can cause property damage or personal injury. Installation and service must be performed by a qualified installer and servicing agency.

1.4. Introduction

IMPORTANTVariableSpeedBlowerMotor(VSM)technologyisrequiredforusewithHarmonyIIIzoningsystem.

TheLennoxHarmony III zoningsystemmanages thedistributionof conditionedairtospecificareasorzonesinahouseorsmallcommercialbuildingbydirectingheated or cooled air to occupied areaswithout conditioning unused areas.ThesystemcanbeusedinthefollowingLennoxHVACsystemapplications:

Table 4. System ApplicationsOption Description

1 Variablespeedgasfurnaceusedwitha2-stageairconditionerunit.*

2 Variablespeedairhandlerunit(withorwithoutelectricheat)usedwitha2-stageairconditionerunitorheatpump.*

3 Variablespeedgasfurnaceusedwitha2-stageheatpump(dualfuel).*

*A1-stageairconditionerunit(heatpump)maybeusedunderspecificcircumstancesaslistedin“Table8.LennoxACorHeatPumpUnits”onpage7.

Variations on the options described above and included in this document arecooling-only, hot water coil and cooling system with electric heat applications.TheHarmony III zoningsystemusesoff-the-shelf, single-stage,non-heatpump,non-power-robbing electronic thermostats andmotorized dampers in any of theapplicationstocontroldistributionofconditionedairtodifferentzones.Thiscontrol

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allowsconditioningofdifferentzoneswithinaresidencewhileusingasingleHVACsystem.Thezonecontrolsystemoperatesintwomodes:centralcontrol(vacationmode) or zone control. LEDs on the zone control panel indicate the currentoperatingmode.

Whenthesystemisinthecentralcontrolmode,ademandfromthecentralcontrolthermostatresultsinconditionedairbeingdirectedtoallofthezones.Inthismode,zone1thermostatisdesignatedasthecontrollingthermostat;otherthermostatsarenotused.Whenthesystemisinthezonecontrolmode,azoneisconditionedonlyupondemandfromthatzone’sthermostat.Thezonecontrolsystemisidealforretrofitapplicationsaswellasnewconstruction.Thesystemcontrolstheairvolume,eliminating theneed forbypassdampers inmostapplications.Thehomeownercontrols the system using zone thermostats tomake comfort settings for eachzone.Aprogrammablethermostatshouldbeusedtoprovideaspecializedheatingandcoolingsequence.While thesystem is in thezonemode,aprogrammablethermostatcontrolsthetemperatureforitsparticularzone.

1.5. Residential Zone Control System - Overview of Field Wiring

VARIABLE SPEEDFURNACE OR AIR

HANDLER

ZONE 1 ZONE 2

*ZONE 4

POWER

THERMOSTAT (ZONE 1 OR CENTRAL CONTROLTHERMOSTAT WHEN IN VACATION MODE)

ZONE DAMPER

THERMOSTAT(ZONE)

CONDENSINGUNIT OR HEAT

DOOR UNIT

TRANSFORMER TO POWER

MOSTATS AND DAMPERS;ALSO POWERS HZA CONTROL

WHEN EDA IS USED)

THERMOSTAT(ZONE)

LEGEND -A Five wire low voltage — 18 ga. minimumB Two wire low voltage OR Three wire if Power-open, Power-closed — 18 ga. minimumC INDOOR UNIT: Up to nine wire low voltage — 18 ga. minimumD OUTDOOR UNIT:

- Two (3, if LSOM equipped unit) wire low voltage (single‐stage condensing unit or EDA) 18 ga. minimum- Three (4, if LSOM equipped unit) wire low voltage (two‐stage condensing unit) 18 ga. minimum- Up to seven wire low voltage (single‐stage heat pump outdoor unit) 18 ga. minimum- Up to eight wire low voltage (two‐stage heat pump outdoor unit) 18 ga. minimum

E Two wire low voltage (discharge air sensor) 18 ga. minimumF Two wire low voltage (pressure switch, heat pump only) — 18 ga. minimumG Two wire — 18 ga. minimumH Refer to the Humiditrol® Zoning Accessory (HZA) for wiring requirements.*NOTE - Zone 3 and zone 4 not available with single‐stage outdoor unit.

OUTDOORTHERMOSTAT /

BALANCEPOINT SENSOR

ZONE CONTROLSYSTEM PANEL

A

B

DISCHARGEAIR SENSORE

C

DF

ZONE DAMPER

G

*ZONE 3THERMOSTAT

(ZONE)

ZONE DAMPER

ZONE DAMPER

HUMIDITROL® ENHANCEDDEHUMIDIFICATIONACCESSORY

HUMIDITROL®

ZONINGACCESSORY (HZA)

OPTIONAL

H

A

B

B

A

B

A

B

Figure 1. Field Wiring

1.6. System ComponentsTheHarmonyIIIzoningsystemconsistsofthefollowing(required):• HarmonyIIIzoningsystemzonecontrolpanel(included)• DischargeAirsensor(included)• Thermostats(oneforeachzone;orderedseparately)• 24VACPowerTransformer(s)(orderedseparately)• Dampers(orderedseparately)• PressureSwitchandTeewithSchradervalve(forHeatPumpsystems;orderedseparately)

• BalancePointSensor(OptionalforDualFuelsystems)• DefrostTemperingKit(OptionalforDualFuelsystems)• RemoteVacationSwitch(optional;orderedseparately)

1.6.1. Zone Control System

The Harmony III zoning system monitors electrical signals and directs controlsignalsbetweenthermostats,dampers,andHVACequipment.

JUMPERS:STAGING

TEMP`

HEATING--

COOLING--

AIR REDUCTION

CONT.--

HEATING--

EQUIPMENTCONNECTIONS

THERMOSTATCONNECTIONS

24VACCONNECTIONS

PIABJUMPERS

SYS CONFIG ANDE-HEAT JUMPERS

DIAGNOSTICLEDS

TIMEDELAY

RIDEFAULTRECALL

OUTDOOR THERMOSTAT /BALANCE POINT SENSORCONNECTIONS

PRESSURE

NECTIONS

DISCHARGEAIR SENSORCONNECTIONS

DAMPER

TIONS

FUSES

SYSTEM OPERATION LEDS

REMOTEVACATIONSWITCH;CONNECTIONSFOR HZA

Figure 2. Harmony III Zoning System Zone Control Panel

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1.6.2. Discharge Air Sensor (DAS)

Adischargeairtemperaturesensor(88K38)monitorsthesupplyair.Thiselectronicsensor’sprobeisinsertedintothedischargeairplenumtogatherairtemperaturedata for thezonecontrolpanel. “Figure4.DischargeAirSensor Installation”onpage8forlocationofthesensor.

TEMPERATURE/RESISTANCE CHARTTEMP ºF RESISTANCE (OHMS)

30 34,56640 26,10650 19,90460 15,31370 11.88480 9,29890 7,332100 5,826

Figure 3. Discharge Air Sensor

1.6.3. Thermostats

IMPORTANTUseonlyElectronicthermostats.Mechanicalorelectro-mechanicalthermostatswillnotworkwiththeHarmonyIIIzoningsystem.

Forallzones,usethermostatsthatareofthistype:• Electronicthermostat• Single-stage• Non-heatpump• Non-powerrobbing• Auto-changeoverornonauto-changeover• Lennoxrecommendsthatzone1thermostat(central[vacation]modecontroller)beprogrammable.

• EachthermostatmusthaveadeadbandbetweenHEATandCOOL.

Recommendedthermostatsinclude:• ComfortSense® 5500(13H13)7-DayProgrammableTouchScreenThermostat-1heat/1cool

• ComfortSense® 7500(13H14)7-DayProgrammableTouchScreenThermostat- 4Heat / 2Cool (configured for non-heat pumpoperation).Whenusing thisthermostat,onlyPrecisionModedehumidificationcanbeusedwherein2°Fofover-cooling isallowed.Also, it cannot reduce theblowerspeedbecause thezonecontrolDSsignalcontrolstheblower.ThermostatDterminalisnotused.

1.6.4. Transformers

The dampers, zone control panel, zone thermostats and Humiditrol® ZoningAccessory (if EDA is used) are powered by a single, field-provided 24VACtransformer. Together, the zone control panel and thermostats require 10VA;dampersrequire10VAeach.ThetransformermusthaveanadequateVAratingtoserveallcomponentsasdescribedinthefollowingtable.

IMPORTANTUpto5dampersperzonemaybeconnectedinparalleltothezonecontrolpanel—nottoexceedatotalofsixdampersforentiresystem.Also,ifmorethan6dampersareused,anothertransformerandisolationrelaywillbenecessary.

Table 5. 24VAC Transformer Selection ChartCatalog Number Size Description VA LOAD =

Panel Plus

10P17 40VA 120/208/240VAC,24VAC 3dampers



83P74 _ ElectricalBox(4-in.Square)

1.6.5. Dampers

Motorized24VACpoweredclosed/spring returnopendampersarestandard fortheHarmonyIIIzoningsystem.However,“power-open/spring-close”and“power-open/power-close”damperscanbeaccommodated

1.6.6. Remote Vacation Switch

TheHarmonyIIIzoningsystemcontrolpanelincludesconnectionsforanoptionalremotevacationswitch(see“Figure2.HarmonyIIIZoningSystemZoneControlPanel” on page 5). The same connections are also used for connecting anoptionalHumiditrol®ZoningAccessorycontroller(seeHumiditrol®ZoningAccessoryInstallationInstructionsfordetails).NOTE: If a remote vacation switch is connected for routing to a convenient location

for end user operation, be sure the switch (field-provided) is properly labeled and instructions provided for proper operation.

IMPORTANTDo not locate the remote vacation switch next to other house switches! TherecommendlocationisnexttoZone1thermostat.

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1.7. Installation Planning and Selecting Heating and Cooling Equipment

WARNINGImproperinstallation,adjustment,alteration,serviceormaintenancecancausepropertydamage,personalinjuryorlossoflife.Installation and servicemust be performed by a licensed professional HVACinstaller(orequivalent)oraserviceagency.

1.7.1. Installation Considerations

ThetotalHVACsystemmustbeproperlysizedtoprovidethebestcomfort.Also,forbestperformance, zonesshouldbesimilar in sizeso thateachzonewouldrequireabout thesameCFM.Eachzone’sducting lengthsshouldbesimilar inlengthwheneverpossible.Alwaysattempt tokeepCFM requirementsperzonewithin25%oftheaverageCFMasreferencedinthefollowingtable.

Ifa“small”zonecannotbeavoided,giveconsiderationtoincreasingtheCFMofthesmallzoneandlinkingadamperinanearbyzonethatwillopenalongwiththesmallzone’sdamper(s).Theprocedureforzonelinkingisdescribedin“1.9.6.ZoneLinking”onpage8.

Table 6. Adjusting for Average CFM ExampleRequired CFM CFM Adjusted to within Average

Zone CFM Avg %CFM Adj Avg %CFM

1 500 713 0.70 600 738 0.81 DamperlinkedwithZone2

2 825 1.16 825 1.12

3 775 1.09 775 1.05

4 750 1.05 750 1.02

1.7.2. Variable Speed Blower Motor (VSM)

Indoor units with variable speed “blower” motors (VSM) are required to allowthezonecontrolsystemtodistributeadequateair toeachzone.Useonlyunitsrecommendedinthefollowing3optionsreferencedin“1.7.3.Selecting/InstallingIndoor andOutdoorUnits” as only thosewill workwith theHarmony III zoningsystem; other types of units will not allow the Harmony III zoning system toproportiontheamountofairgoingtoeachzone.

1.7.3. Selecting/Installing Indoor and Outdoor Units

Outdoorunitsmaybesingleor two-stage;use the following table todeterminewhichtouse,basedonthenumberofzonesbeingimplemented,andwhethertheairconditionedzonesareofequalorunequalsize.

Table 7. Indoor / Outdoor OptionsOptions Indoor Unit Outdoor Unit

1 AnyLennoxGasFurnacewithVSMonly.

LennoxAirConditionerunitasdescribedin“Table8.LennoxACorHeatPumpUnits”.

2 LennoxAirHandlerUnitwithVSMonly.

LennoxHeatPumpunitasdescribedin“Table8.LennoxACorHeatPumpUnits”.

3 AnyLennoxGasFurnacewithVSMonly.

LennoxHeatPumpunitasdescribedin“Table8.LennoxACorHeatPumpUnits”.

NOTE: Limited variations to AC units described herein are detailed. Go to “4.1. Variations on Common AC Unit Applications” on page 39 for further details.

Table 8. Lennox AC or Heat Pump UnitsNumber of

Zones Comparative Zone Sizes Lennox AC or Heat Pump Unit

2 Equal SingleorTwo-stageandVSMunits

2 *Unequal Two-stageonlyandVSMunits

3or4 EqualorUnequal Two-stageonlyandVSMunits

*EqualzoneswouldhaveverysimilartotalductinglengthswithCFMrequirementswithin10%ofaverageCFMperzone.UnequalwouldhavelesssimilarductinglengthandgreatervariancesfromaverageCFM(see“Table6.AdjustingforAverageCFMExample”onpage7example).

1.8. Optional Dehumidification AccessoriesTheHarmony III zoning systemmay be used in conjunctionwith aHumiditrol® EnhancedDehumidificationAccessory(EDA)andwhichalsorequiresaHumiditrol® ZoningAccessory(39W67).Thisdocumentreflectsthecontrolwhichisoutfittedforconnectionto,andcontrolof,theEDAinazonecontrolsystemusingtheHZA.SeeHumiditrol®ZoningAccessoryInstallationInstructionsformoreinformation.

1.9. Installing Zone Control Components

1.9.1. Discharge Air Sensor (DAS)

CAUTIONThis device is manufactured using unpainted and pre-painted metal. Sharpsheetmetaledgescancauseinjury.Wheninstallingthedevice,avoidaccidentalcontactwithsharpedges.

Install the discharge air sensor in the discharge plenum downstream from thecoolingcoil.Besurethatthedischargeairwillpassoverthesensorbeforetheairisdistributedintotheductsystem.Typicalup-flowsensorapplicationsareshowninfigure4;thesensordimensionsshown(distancefromheatstrips,coil,andpositioninplenum)alsoapplytootherapplications.

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1. Whenpossible,positionthesensorsomedistanceawayfromthecoilratherthanintheimmediatecoilarea.Thedischargeairsensorshouldbelocatedatleast10inchesabovethecoilifpossible.

2. Fasten the sensor bracket to the plenumwith two self-tapping sheetmetalscrews.

3. ConnectwirestoDASonzonecontrolpanel.Notontheairhandlercontrolor IFC (see “Figure20.Option2 -Typical LennoxHeatPumpandLennoxVariable-SpeedAirHandler(Troubleshooting)”onpage20).

4. Besurethatthetipofthesensorislocatedapproximately10inchesfromtheindoor coil in thedischargeplenum,andhalf thedepthof theplenum,andcenteroverthedischargeairflow,side-to-side.

IMPORTANTFortheDAS,transversingthesupplyductforthebestlocationisrecommended.Optimallocationiscriticaltotheproperoperationofthezoningsystem

plenum

coil

INDOOR UNIT FRONT

VIEW

1/2 the width

of theplenum

sensor centered indischarge airflow(see note 1)

Temperature19

(254)

INDOOR UNITSIDE VIEW

ECBElectric

HeatStrips

NOTE 1 - FOR UNITS WITH HUMIDITROL—Discharge air sensor(DAS) MUST be located on the output side of the EDA (if used; seeHumiditrol Zoning Accessory Installation 505,337M)

SENSOR PROBEsee PROBEMOUNTING

DETAIL below

PLENUM

SENSOR MOUNTING

DETAIL

Figure 4. Discharge Air Sensor Installation

1.9.2. Zone Control Panel

IMPORTANTThe electrical power source for the zone control system, i.e. the transformerprimary,andfurnaceorairhandlerunitmustbethesamesource.Inaddition,thezonecontrolsystempower-upmustoccuratthesametimeorbeforethefurnaceorairhandlerunitispoweredup.

SelectaninstallationsitefortheHarmonyIIIzoningsystemcontrolconsideringthefollowinglocationparameters:

• Is conveniently accessible and centrally located to facilitate wiring fromthermostats,dampers,pressureswitch(ifused),andHVACequipment.

• Isinanon-condensingarea(suchasacloset).• IsNOTinalaundryroom(norotherroominthehousewherethehumiditywouldtypicallybemuchhigherthantherestofthehouse).

• IsNOTinanypartofthebuildingwherethetemperaturemayexceed150°F.

1.9.3. Thermostats

Identifythebestlocationforathermostatineachzone.Iftwoormoreroomsarewithinasinglezone,placethethermostatinalocationthatiscentraltoallrooms.Forexample, ifazonecontains twobedrooms, try toplace the thermostat inahallwaynearbothbedrooms.

Donotinstallthermostatsindraftyareas,behinddoors,incorners,nearradiantheatsources(appliances),nearsunnywindows,nearconcealedpipesandchimneys,norinunconditionedspacessuchasclosetsorexteriorwalls.

1.9.4. Transformer

Obtain an appropriately-rated transformer (see “Table 5. 24VAC TransformerSelectionChart” on page 6). Install the transformer in either the indoor unit orinanelectricaljunctionboxnearthezonecontrolpanel.NOTE: Two transformer systems need to be in phase with each other.

1.9.5. DampersNOTE: The power source for the transformer must be the same power source as

the indoor unit’s transformer.

Motorized dampers in the supply duct system regulate air to the zones. Someapplications will be unique and require more than one damper per zone. Ifadditionaldampersarerequired,refertothewiringdiagramin“1.12.ComponentSpecificWiring” onpage14.Also, ifmore than six dampers areused, anothertransformerandisolationrelaywillbenecessary.

Formoreeffectivezoneisolation,thereturnductsystemmayalsobedamperedbyzone.Dampersforeachzonemustbewiredinparallel.Installdampersinthedesired locations; thenrunthermostatwire fromthedamperto thezonecontrolpanelanddamperrelaysasneeded.

1.9.6. Zone Linking

Zonelinkasmallzonetoalargezonebywiringdampersinamannersimilartofigure4.Effectively,thisdistributessomeofthesmallzone’sairtoanotherzonetoreducethechanceofoverheatingorovercoolingthesmallerzone.Referto“Table8. LennoxACorHeatPumpUnits” on page7which showsan example of anunequalzoneandhowtoadjusttobringitwithin25%oftheaverageCFM.Figure4showshowthedampersmaybelinkedtodistributesomeoftheairfromasmallzoneintoanotherzone.

9

Zone 2 (largest zone)

Zone 1 (smallest zone)

This damper is linked to the zone 1damper; it opens when Zone 1opens to redirect some air awayfrom Zone 1 and closes only whenzone 1 damper closes.

RELAYZONE 2

DAMPER

DAMPER

DAMPER

All Zone 2dampersopen onlyfor calls toZone 2calls for air.

DAMPER

ZONE 1Note: ZoneDampers arePower-Closetype.

Figure 5. Zone Linking

Table 9. Zone Demands to Small and Large Zones

Zone DampersZone with Demand

None Small Sm.& Lg. LargeSmall Zone Closed(24V) Open(0V) Open(0V) Closed(24V)

Large ZoneClosed(24V) Open(0V) Open(0V) Open(0V)

Closed(24V) Closed(24V) Open(0V) Open(0V)

Closed(24V) Closed(24V) Open(0V) Open(0V)

NOTE: Zone Dampers are Power-Close type.

1.10. Zone Control Panel Jumpers

1.10.1. Setup for Controlling Equipment Staging and Volume of Air to Zones

Thissectionprovidesinformationforinstallingjumpersonthezonecontrolpaneljumperbanks(see“Figure6.ZoneControlPanelJumperBanks”).ThesejumpersdefinehowthezonecontrolsystemfunctionstocontrolequipmentstagingandtodelivertheproperamountofCFMtothezones.

HEATING STAGINGJUMPERS

COOLING STAGINGJUMPERS

CONTINUOUS AIRREDUCTION JUMPERS

HEATING AIRREDUCTION JUMPERS

PIABJUMPERS

SYS CONFIG ANDE-HEAT JUMPERS

Figure 6. Zone Control Panel Jumper Banks

CAUTIONStaticelectricaldischargewilldamageelectronics.Discharge static electricity before touching the zone control panel. Touch agroundedmetalobjectbeforetouchingthecircuitboard.

1.10.2. PIAB Jumpers Affect Blower Operation

A variable-speedmotor will operate at itsminimum speed or at any incrementfaster up to itsmaximumspeed.ThePercentage IntoAdjustmentBand (PIAB)jumperscontrol thespeedvarianceof themotor.Whenthezonecontrol’sPIABjumpersaresetto0%,thebloweroperatesattheminimumairvolumeproducedby theairhandlerandwhenset to100%, thebloweroperatesatmaximumairvolumeproducedbytheairhandler(seeyourairhandlerinstallationinstructionsforspecificCFMs).

For example: if an air handler has a minimum air volume of 800 CFM,and a maximum of 1500 CFM, and the jumper is set to 0%, the airdelivered to the zone will be 800 CFM. Similarly, if the jumper is set to100%, the air delivered to the zone is 1500 CFM. By placing a jumperin the 50%er's minimum and maximum CFM capacities.

PIAB JUMPER = 0%MIN. 800 CFM

PIAB JUMPER = 100%MAX. 1500 CFM

(MOTOR RUNS ATMINIMUM SPEED)

(MOTOR RUNS ATMAXIMUM SPEED)

(MOTOR RUNS AT VARIABLE SPEEDS)

PIAB JUMPER = 50%MID. 1150 CFM

Figure 7. VSM Adjustment Band Example

Byinstallingjumpersatdifferent%oneachPIABbank,youcandirectdifferentamountsofairvolumetoeachzone.Youmustjumpera%onzone1andat

10

leastoneotherzone,andyoumustjumperOFFonunusedzonesasshowninthefollowingfigure.

Pin shown withjumper on

ZONE 1 AT 10%.Pin shown with

jumper onZONE 2 AT 0%

(allows min. cfmairflow).

ZONE 1 ZONE 3PIAB PIAB

ZONE 2 ZONE 4PIAB PIABNOTE - Only zones 2,

3, and 4 have an OFFsetting.

ZONES 3AND 4 ARESHOWNNOT USED(JUMPERSSET ON“OFF”).

Figure 8. PIAB Jumper Settings (Typical)NOTE: The blower speed may be affected by the reduction jumpers, if installed.

See “1.10.6. Continuous Air Reduction Jumpers” on page 11 for more details.

1.10.3. Upgrading from Harmony II zoning system?NOTE: If replacing a Harmony II zoning system, use conversion values in “Table

10. Air Jumper Positions Conversion Chart” to maintain equivalent air settings when setting up the Harmony III zoning system.

Table 10. Air Jumper Positions Conversion ChartModel Equivalent Positions (%)

HarmonyIIzoningsystem 25 35 45 55 65 75 85 95

HarmonyIIIzoningsystem 0 10 30 40 50 70 80 90

1.10.4. Zone 1 PIAB Jumpers – 140ºF DAS

Zone1PIABterminalstriphasanadditional jumpersetting(labeled140FDAS)that may be used for added operational flexibility (see “Figure 9. 140ºF DASJumper”).Whenthesuppliedjumperisinplaceacrossbothpins,thedischargeairsensor(DAS)upperlimitwillbe140°Finsteadof160°F(default)toprovideaddedoperationalflexibility.

HEATING STAGINGJUMPERS

COOLING STAGINGJUMPERS

CONTINUOUS AIRREDUCTION JUMPERS

HEATING AIRREDUCTION JUMPERS

PIABJUMPERS

Figure 9. 140ºF DAS JumperNOTE: If the heating staging jumper is set to either 120 or 130 and the 140F DAS

jumper is in place, the furnace will stage up at 115ºF and down to 130ºF (see “1.10.8.1. Heating Staging Temperature Jumper” on page 11) for further details.

1.10.5. Determining PIAB Jumper SettingsNOTE: Use “6.3.2. PIAB Calculation Worksheet” on page 65 (also see example

below) to help calculate the zone control system PIAB settings.

1. Fromacoolingloadanalysis,determinewhatCFMisrequiredforeachzone.Also,fromtheairhandler,determineitsminimumandmaximumCFMratings.

2. UsingthePIABformula,foundinTable5andreflectedintheworksheetbelow,calculatethePercentIntoAdjustmentBand(PIAB)usingthevaluesfromstep1 foreachzone. “DeterminePIABJumperSettings”onpage11alsogivesexampleCFMvaluestoillustrateshowtodeterminethecorrectjumperforthePIABforZone1usingthosevalues.

3. Settheairselectionjumperforthezoneusingthepercentairdeterminedinstep2. If thepercentair fallsbetweenavailable jumper settings, select thenearestunitoften.

4. Foreachzone,repeatsteps1through3.NOTE: See “1.10.4. Zone 1 PIAB Jumpers – 140ºF DAS” or information on 140F

DAS (discharge air sensor) jumper used on Zone 1 PIAB.

11

PIAB = [(Required CFM - Minimum CFM) / (Maximum CFM - Minimum CFM)] * 100Sample CFM Required Minimum Maximum MinimumSample PIAB = ([___920 - 450 ] / [ 2000 - 450 ]) x 100

==

Sample PIAB = ([ 470 ] / [ 1550 ]) x 100=

Sample PIAB = [ 0.303 ] x 100 = 30 %

Figure 10. PIAB Calculation Example

example CFM valuesRequired CFM CFM

Zone 1 Zone 2 Zone 3 Zone 4 Min. Max.

1020 1500 720 OFF 720 2200*

*High cool jumper setting

PIAB formula100(Req’d CFM − min. CFM)

(Max. CFM − min. CFM) x

Using example values above, find PIAB for Zone 1:PIAB (1020 - 720) = 300 =.20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(2220 - 720) =1500. . . . . . . . . . . . . . . . . . . . . . .PIAB Jumper setting % .20 x 100 20%. . . . . . . . . . . . . . . . . . . .

Figure 11. Determine PIAB Jumper Settings

1.10.6. Continuous Air Reduction Jumpers

Duringcontinuousfanmodewithouteitheraheatingorcoolingdemand,theblowerrunsat thetotalpercentageof theCFMjumpersettingsof thezonescalling forcontinuousfan(nottoexceed100%ofblowercapacity).Acontinuousairreductionjumperallowstheblowerspeedtobereducedbyapercentageduringcontinuousfanmode.

Theselectionsare75%,50%,25%and0%.Atthefactory,thejumperisseton0%.Setthejumpertothepositionequaltotheamountofcontinuousairreductiondesired.NOTE: If the calculations using a reduction percentage indicated a resulting CFM

lower than the blower’s minimum CFM rating, the blower will deliver its minimum CFM

1.10.7. Heating Air Reduction JumpersNOTE: For heat pump applications, ALWAYS set the jumper on 0%. High head

pressures may result if air is reduced during heating mode.NOTE: For use in warm-climate areas where units have high cooling capacity with

low heat capacity, ALWAYS set the jumper on 0%.

Theheatingairreductionjumperenablestheblowerspeed,duringheatingonly,torunatareducedratecomparedtothecoolingblowerspeed.

Theselectionsare40%,20%and0%.Jumpersareset to0%fromthe factory.Setthejumpertothepositionequaltotheamountofheatingairreductiondesired.

CONTINUOUS HEATING

0%20%40%75%

50%

0%25%

factorysettingsshown

heating jumperMust be set on 0%for heat pumpapplication

Figure 12. Heating Air Reduction Jumpers

1.10.8. Heat/Cool Staging

Heating/Coolingstagingjumperspreventanyrapidstagingoftheequipment.Thissectionshowstherecommendedsettingsforheating/coolingstagingtemperaturesandexplainsthetemperaturedifferentials fordifferentequipmentconfigurations.In the diagrams, sinewaves indicatewhich stageoperates during the rise andfallofdischargeairtemperatureforthedifferentheating/coolingstagingjumpers.Recommendedjumpersettingsareshowninboldtype.

1.10.8.1. Heating Staging Temperature Jumper

HeatingStagingtemperaturejumpersareusedtosetthetemperatureatwhichthesecondstageheatingequipmentcomesON.Itsselectionsrangefrom85-130(°F).Thesettinghasabuilt-indifferentialof20°F(exceptasdescribedwhen140DASjumperisused).Duringoperation,whenthedischargeairtemperaturefallsbelowthe jumper setpoint, 2nd-stageheatingbegins. If thedischargeair temperaturereaches thedifferential temperature, 2nd-stageoperation ceasesand1st-stageheatingresumesuntilthetemperatureagainfallsbelowthejumpersetpoint.NOTE: For SLP98 furnaces only, the furnace ignition control will automatically

adjust firing rate without a second stage heat demand to match the blower airflow (CFM) requested by the Harmony III zoning system.

HeatPump(range:85-110°F,recommended:90).Themaximumdischargeairtemperatureatwhichtheheatpump/electricheatisallowedtorunisfixedat135°F.

12

105F

1ST STAGE2ND STAGETIME

2ND STAGEDis

char

ge A

ir Te

mpe

ratu

re ºF

When thezonecontrolsystem isapplied toaheatpumpwithelectricheat, theelectricheatwillbestagedONtomaintainthedischargeairtemperaturesetbytheheatingstagingjumperposition.

Gasfurnacewith160°Fupper limit (range:100-130;recommended:120).Themaximumdischargeairtemperatureatwhichthefurnacemayrunisfixedat160°F.

Dis

char

ge A

ir Te

mpe

ratu

re ºF

1ST STAGE2ND STAGETIME

2ND STAGE

Gas Furnace with 140F DAS jumper (range: 100 - 130; recommended: 120).Whenthe140FDASjumperisinplace(asshowntothefollowingillustration),themaximumdischargeairtemperatureatwhichthefurnacemayrunisfixedat140°F.NOTE: Note the 140F DAS jumper’s impact on the differential at 120 and 130

settings.

1ST STAGE2ND STAGE 2ND STAGE

Dis

char

ge A

ir Te

mpe

ratu

re ºF

1.10.8.2. Cooling Staging Temperature Jumper

CoolingStagingtemperaturejumpersareusedtosetthedischargeairtemperatureatwhichsecondstagecoolingcomeson.Itisselectablebetween50°,55°and60°F.A7degreetotaldifferentialisassociatedwiththisstagingtemperature,beginningatthejumpersetpoint,andextendingtosevendegreesabovethesetpoint.

Foranyjumpersetting, if thedischargeairshouldfall to45°Fandanyzonestilldemandscooling,thecompressorwillnotrunleavingonlytheblowertooperateuntil thedischargeaironceagain rises to50°Fand thefiveminutecompressorOFFdelayhasbeensatisfied.Forthisreason,andtobettersatisfylatentloads,thejumperrecommendedsettingis50.

2ND STAGE

67F

62F

57F

1ST STAGE

13

1.10.9. System Configuration/E-Heat Stages)

TheSYSTEMconfigurationjumpersmustbeinsertedtoselectthetypeofcoolingandheatingsystemthathasbeeninstalledandtheE-HEATStagesjumperdefinesifthesystemisdualfuelordefinesthenumberofelectricheatingstagesused.

1.10.9.1. Gas Furnace and Air Conditioning

Foragasfurnaceandairconditioningcombinations, put the jumper onGAS (as shown) and select thenumberofequipmentcoolingstagesbyplacing thecooling jumper to theappropriatesite(placeon1COOLfor1stagecoolingor2COOLfor2-stagecooling).

SYSTEMConfigurationHP

2COOL2HP

GAS1COOL1HP

E-HEATStages

DF123

IN A/C AND GAS FURNACECONFIGURATION, “HP”AND “E-HEAT” JUMPERSARE IGNORED

Inthisconfiguration,themaximumdischargetemperature(uppertemperaturelimit)atwhichthefurnaceisallowedtorunis160°F(exceptwhen140FDASjumperisinplace).Attheupperlimit,thezonecontrolsystemremovesanyheatdemandfromthefurnaceforaminimumoffiveminutesanduntilthetemperaturecomesbackwithinnormaloperatingtemperatures.

Whileatorabovetheuppertemperaturelimit,thecontrolunitsignalsforcontinuousbloweroperationtothosezonesfromwhichathermostatheatdemandisreceived.Whensettingupthefurnacecontrolboardoptions,besuretosettheBLOWER-OFFDELAYtonogreaterthan210seconds.

1.10.9.2. Heat Pump with Electric Backup Heat

For heat pumpwith electric backupheat,selectHPpositionasshowninthisdiagram.


2COOL2HP

GAS1COOL1HP

E-HEATStages

DF123

Inthisconfiguration,themaximumdischargetemperaturetheelectricheatorheatpump is allowed to run is 135°F.At that temperature, the zone control systemremovesdemandfromtheheatingunitforaminimumoffiveminutesanduntilthetemperaturereturnstothenormaloperatingtemperaturerange.Whileatorabove135°F,thecontrolunitsignalsforcontinuousbloweroperationtothosezonesfromwhichathermostatheatdemandisreceived.

SelectthenumberofequipmentcoolingstagesbyplacingtheCOOLstagesjumpertotheappropriateside(1COOLor2COOL).Similarly,setthenumberofHeatPumpstages(1HPor2HP).Jumpersettingsontheabovediagramillustratethepropersettingsforatwostageheatpumpandtwo-stageairconditioningsystem.

Whenusingaheatpumpwithelectricbackupheat, insertanE-HEATjumpertoselectthetotalnumberofavailableelectricheatstages.Thediagramaboveshowsasingleheat-stripconfiguration.

1.10.9.3. Heat Pump - Dual Fuel heating, 1-stage or 2 Stage Heat Pump and Gas Furnace

This diagram shows a dual-fuelconfiguration (heat pump for heatandcoolwithgasbackupheat).


2COOL2HP

GAS1COOL1HP

E-HEATStages

DF123

HPpositionmustbejumperedforDualFuelapplicationsandtheE-HeatStagesjumpermustbesetto“DF”fordualfueloperation.

Select the number of equipment cooling stages by placing the COOL stagesjumpertotheappropriateside(1COOLor2COOL).Similarly,set thenumberofHeatPumpstages(1HPor2HP).Jumpersettingsontheabovediagramillustratethepropersettingsforaonestageheatpumpandonestageofcooling.

1.11. Common System Component WiringUse thermostat wire to connect dampers, damper transformers, and the DASprobewiththezonecontrolsystem.

IMPORTANTAvoid running any control wiring close toAC house wiring. If this cannot beavoided,limitcloseparallelofpowerandcontrolwiringtoafewfeet.

1.11.1. Dampers and Damper Transformer

Connect dampers to the zone control panel. A total of six dampers may beconnectedatthedamperoutputterminalsonthezonecontrolpanel.Ifadditionaldampersareused,additionaltransformersandrelayswillbeneeded.

FuseF1will protect the damper outputs froma short circuit or overload in thedamperwiring.

Ifdampersareappliedtothereturnductsystem,thedampersforeachzonemustbewired inparallel.Connectdampertransformertozonecontrolpanel terminalblock.

14

120VAC

24VAC

EXTENDED DAMPERTRANSFORMER(SEE NOTE)

(NOT TO EXCEED75 VA) CLASS IIWIRING

120 VAC

24 VAC

ZONERELAY K4

ZONERELAY K3

ZONERELAY K2

ZONERELAY K1

ZONE 1DAMPER

ZONE 2DAMPER

ZONE 3DAMPER

ZONE 4DAMPER

EXTENDEDZONE 1DAMPER




EXTENDED DAMPERWIRING

ZONE CONTROL,THERMOSTATS, and DAMPERS TRANSFORMER

Figure 13. Heating Air Reduction JumpersNOTE: The extended damper transformer rating should be sized to adequately

handle zone dampers (1-4) plus relays (K1-K4) not to exceed class II wiring limit of 75 VA. Combined load of zone dampers and zone relays not to exceed 60 VA. Use Lennox Catalog number 56L68 for Zone Relays 1 through 4.

1.11.2. Discharge Air Sensor (DAS) Probe

Wiredischargeairsensorprobetozonecontrolpanel.Thevariable immersion-temperatureprobeisnotpolaritysensitive.

1.12. Component Specific Wiring

CHECK VOLTAGE BEFORE CONNECTING ZONE CONTROL TRANSFORMER (ZONE CTRL XFMR) LEADS TO THE ZONE CONTROL PANEL CONNECTIONS

VERSED; SWAP LEADS (AS SHOWN IN “C”) AND CONFIRM 0 VOLTS

IF 0 VOLTS (AS SHOWN IN “A”)THEN POLARITY IS CORRECT

Figure 14. Confirming Transformer Phasing (Polarity) is Correct

1.12.1. Zone Control Transformer Phasing

Usingtwotransformersonasinglesystem—WhentheHarmonyIIIzoningsystemcontrolpanelisconnectedtoasystemthathasitsowntransformer,thephasing(orpolarity)oftheairhandlertransformertothezonecontrol’sadd-ontransformerisextremely IMPORTANTbecausethezonecontrol transformerpowerstheDS circuitwithinthezonecontrolandthenconnectstotheairhandlerDScircuit.Theonlytwotransformersthatneedcorrectphasingwiththeircommonsconnectedare the zone control and air handler transformers. Check the phasing prior toconnecting the zone control transformer zone control panel’s connections. The

15

zonecontroltransformerprimaryshouldbethesamesourceastheairhandlertokeepituncomplicated.• Usea230VACprimary transformerwithairhandlers(CBX25UHV,CBX32MV,CBA38MVandCBX40UHV)

• Use a 115VAC transformer with furnaces (SLP98, SL280V,EL296V andSL297NV)andwithCBWMV.

1. Connectthezonecontroltransformerprimarytotheairhandlervoltagesource.

2. Donot connect thezonecontrol transformersecondary to thezonecontrolpanelatthistime.

3. Connect air handler secondary common to the assumed zone controltransformercommon.

4. Measure voltage between air handler R and unconnected zone controltransformersecondarylead.

» if0volts(A,“Figure14.ConfirmingTransformerPhasing(Polarity)isCorrect” on page 14) then polarity is correct; connect the leads tozonecontrolCandRasshown.

» if48volts(B,“Figure14.ConfirmingTransformerPhasing(Polarity)isCorrect”onpage14)thenpolarityisreversed;swapleadsasshownandconfirm0volts (C, “Figure14.ConfirmingTransformerPhasing(Polarity) isCorrect”onpage14);connecttheleadstozonecontrolCandRasshown.

5. Withthecorrectpolaritydetermined,connectCwiretozonecontrol24VACC terminalandRwiretoRterminal.

1.12.2. Thermostat

Using standard electronic 1-heat/1-cool non-heat pump, non-power robbingthermostats,andfive-wirethermostatcable,wireunitsasfollows:

1. WireeachthermostattoterminalsY,W,G,R,andC.

2. Runcablefromeachofthethermostatstothezonecontrolpanel.Markeachcableaccordingtothezonethermostatfromwhereitoriginates.

3. Stripthecablesandattacheachofthefivewirestothezonecontrolpanel.

1.12.3. Gas Furnace

IMPORTANTThecommonC terminalof theHarmony IIIzoningsystemzonecontrolpanelMUSTbeconnectedtothecommonterminaloftheintegratedcontrol,orifusinganairhandler,MUSTbeconnectedtothecommonterminaloftheairhandlerterminalstrip.Ifnotconnected,blowermayoperateonlyattheminimumCFMorwillnotramptozoneairvolume.

After the furnace is installed, fieldwire the unit as described in the installationinstructionsprovidedwiththefurnace.Usethermostatwiretoconnectthefurnaceandthezonecontrolpanelandtoconnectthezonecontrolpanel24VACCtotheintegratedcontrolterminalstripC.

1.12.4. Air Conditioner Unit

Aftertheairconditionerunitisinstalled,fieldwiretheunitasshownintheinstallationinstructionsprovidedwiththeunit.UsethermostatwiretoconnecttheACunittothezonecontrolpanel.

16

1.13. Minimum CFM in Variable Speed Furnace and Air Handlers

Harmonylll™zoningsystemminimumCFMvaluesforvariablespeedfurnacesarelistedinthefollowingtable.Theseapplytofurnacesandairhandlerswithserialnumbersindicatingtheywerebuiltin2004orlater.Withfurnacesbuiltbefore2004,usetheHarmonyIIzonesystemcontrolsystemminimumairnoteintheinstallationinstructionsorproductspecification for that furnaceorairhandler’sairhandlingdata.

Table 11. Minimum CFM for Harmony III zoning system with Variable Speed Blower Motors (Gas Furnaces)

Unit Model Numbers CFM (min) Unit Model

Numbers CFM (min)

EL296DF090XV60CEL296DF110XV60C

450 SL280UH135V60D 450

ML180UH030V36AML180UH045V36AML180UH070V36AML180UH070V36B

350SL297UH040NV36BSL297UH060NV36B

250

ML180UH110V60C 550 SL297UH080NV48C 380

ML180UH070V48BML180UH090V48B

400 SL297UH080NV60C 450

SL280DF070V36A 250SLP98DF070XV36B**SLP98DF090XV36C**

250

SL280DF090V48B 380 SLP98DF090XV48C** 360

SL280DF090V60C 450SLP98DF090XV60C**SLP98DF110XV60C**

450

SL280UH060NV36A 250SLP98UH070XV36B**SLP98UH090XV36C**SLP98UH090XV48C**

250

SL280UH080NV48B 380 SLP98UH090XV60C** 450

SL280UH080NV60CSL280UH100NV60C

450

SL280UH070V36ASL280UH090V36B

250

SL280UH090V48B 380

SL280UH090V60CSL280UH110V60C

450

Table 12. Minimum CFM for Harmony III zoning system with Variable Speed Blower Motors (Air Handlers)

Unit Model Number CFM (min) Unit Model

Number CFM (min)

CBA25UHV-018CBA25UHV-024CBA25UHV-030CBA25UHV-036

250CBX32MV-048**CBX32MV-068**

450

CBA25UHV-042CBA25UHV-048CBA25UHV-060

450CBX40UHV-024**CBX40UHV-030**

250

CBA38MV-018/024**CBA38MV-030**CBA38MV-036**

250 CBX40UHV-036** 380

CBA38MV-042**CBA38MV-048**CBA38MV-060**

450CBX40UHV-042**CBX40UHV-048**CBX40UHV-060**

450

CBX25UHV-018CBX25UHV-024CBX25UHV-030CBX25UHV-036

250CBWMV-24B-040CBWMV-36B-070CBWMV-36C-090

250

CBX25UHV-042CBX25UHV-048CBX25UHV-060

450 CBWMV-60C-100 450

CBX32MV-018/024**CBX32MV-024/030**CBX32MV-036**

250 CBWMV-60C-120 380

NOTE: Three percent duty cycle corresponds to the minimum CFM, and a 97% duty cycle corresponds to the maximum CFM.

**Listedvaluesinthetablecorrespondto0%dutycycleoftheHarmonyIIIzoningsystemcontrolsignal.SincetheHarmonyIIIzoningsystemputs3%atminimum,actualvaluemaybe10-30CFMhigher.NOTE: For discontinued air handlers and furnaces, please refer to the individual

product installation instruction. Minimum CFM values for Harmony III will be listed at the end of the listed CFM tables.

17

1.14. System Flow Diagrams

Shutdowncompressorstage 1 or 2

Continuous airdelivered to

calling zones

Dischargeair 7°F or moreabove cooling staging jumper

setting?

4-minuteminimum runtime

in 1st stagecompleted

?

5 minutessince completion

of last coolingdemand

?

sor stages 1 and 2and blower fan

Yes

No

Yes

No

Yes

No

No

Yes

No

Yes

No

Yes

No

Yes

No

Dischargeair lower than

45°F?

Monitordischarge airtemperature

COOLINGDEMAND

RECEIVED

Dischargeair lower than

45°F?

Energize stage 2compressor and

ramp indoorblower to

CFM setting

Energize stage 1compressor and

ramp indoorblower to

CFM setting


Dischargeair rises above

55°F?

Coolingdemand satisfied

?

Coolingdemand satisfied

?

Dischargeair below cooling staging jumper

setting?

De-energizestage 2


in 2nd stagecompleted

?Yes

No

No

Yes

Yes

Figure 15. Cooling Operations - AC/HP

Shutdown all

pressor /electric heat


calling zones

Dischargeair below heating

staging jumpersetting

?

4-minuteminimum

stage runtimecompleted

?

5 minutessince completion

of last heatingdemand

?

Yes

No

Yes

No

No

Yes

No

Yes

No

Yes

No

Yes

No

Dischargeair higher than

135°F?


HEATINGDEMAND

RECEIVED

Dischargeair higher than

135°F?

Energize heat stripstage (W1/W2) and

ramp indoor blower toCFM setting

Energize (Y1/Y2)compressor heatstage and rampindoor blower to

CFM setting


Dischargeair falls below

130°F?

Was 2ndstage (Y2)

running?

Heatingdemand satisfied

?

Dischargeair 20°F or more

above heatingstaging jumper

setting?

De-energizefurnace W1 &

W2

2-minute minimumstage runtime

completed?

Yes

No

No

Yes

Yes

Order of Staging:HP stg 1 (Y1)HP stg 2 (Y2)Elec strip stg 1 (W1)Elec strip stg 2 (W2)

Heatingdemand satisfied

?

NoUpstage

Was 2ndstage (W2)

running?

Yes

sor stages 1 and 2and blower fan

YesYes

No

NoUpstage

Figure 16. Heating Operation - HP and Electric Heat Strips

18

2. Heat PumP

2.1. Installing Heat Pump and Accessories

2.1.1. Equipment Installation

Followallequipmentinstallationinstructionsprovidedwitheachunit.

2.1.2. Pressure Switch

The high pressure switch is a normally closed (N.C.) auto-reset high pressureswitch located in thecompressordischarge lineoron thesuctionvalveserviceport.Theswitch is factoryset toopenwhenoperatingpressuresriseandclosewhenthepressuredrops(seefollowingtable).Theintentoftheswitchistoprotectthe outdoor unit fromabnormally high operating pressures duringmildweatherheatingdays.ThegreenpressureLEDcomesonwhentheheatpumppressureswitchisclosedindicatednormalcondensingpressures.

Table 13. High Pressure Switch OperationRefrigerant Open on pressure rise (psig) Close on pressure fall

(psig)HFC-22 375 275

HFC-410A 550 425

NOTE: If a pressure switch is factory installed in the unit, do not remove the switch or switch wires.

Theswitchmayalsobe fasteneddirectly to thevaporvalveserviceportwhichbecomesthedischargelineinheatpumpheatingmode(see“Figure17.TeeandVaporLineHighPressureSwitch”).

1. Connectrefrigerantgaugesettotheoutdoorunitvaporline.

2. Establishacompressorheatingdemandandallowsystemtobeginoperating(see heat pump heating checkout section for details). Note that the greenpressureswitchLEDcomeson.

3. Allowsystemtooperateseveralminutessorefrigerantpressurescanbalance.

4. Momentarilyblockthereturnairopeningandobservethehighpressuregauge.Whenhotgas linepressure reaches the “openon”pressureand thegreenpressureswitchLED turnsoff,anerrorcodewillbeset in thezonecontrolsystem,DIAGs1and4willturnon,andoutdoorunitwillstagedownandturnoffiftheswitchdoesnotclosewithin90seconds.Afterwards,backupheatwillbeusedtosatisfythedemand.

5. Remove the restriction.Whenhotgaspressuredropsbelow the “closeon”pressure, thegreenpressureswitchLEDwill turnonandallDIAGsshouldturnoff.

2.1.3. Pressure Switch Wiring

Pullatwo-wirethermostatcablefromthefield-installedpressureswitchtothezonecontrolpanelandconnectatthepressureswitch,andatthezonecontrolpanelasshownintheconnectionlocationdiagram.

2.1.4. Tee (High Pressure Switch; Heat Pumps only)

Atee(Lennox#87071)isneededtoinstallthepressureswitchalongwithavalvecore(Schrader)forcheckingpressureinthevaporlineduringheatpumpheatingmode.Theswitchmayalsobe fasteneddirectly to thevaporvalveserviceportwhichbecomesthedischargelineinheatpumpmode.

TOREVERSING

VALVE

VAPOR LINE(TO INDOOR

COIL)

HIGH PRESSURESWITCHNEW SERVICE

PORT

VALVE DEPRESSOR TEE (LENNOX 87071)

Figure 17. Tee and Vapor Line High Pressure Switch

IMPORTANTHigh pressure switch must be installed on open side of tee first to preventrefrigerantloss.

2.1.5. Balance Point Sensor (Outdoor Thermostat)

Abalancepointsensorasillustratedinthefollowingfiguremaybeimplementedinadual-fuel(Option3)system.Thisthermostatmonitorstheoutdoortemperature,comparesittothebalancepointsetting,andsignalsthezonecontrolifthereadingisbelowthesetpoint.Thezonecontroltheninstructsthegasfurnacetoprovidealltheheatingandprohibitstheheatpumpfromattemptingtofillademandforheat.See“Figure32.Option3-TypicalLennoxHeatPumpandLennoxVariable-SpeedGas Furnace (Dual Fuel) (Troubleshooting)” on page 48 for connecting sensorswitchtoHarmonyIII.

TERMINAL B

TERMINALR

Figure 18. Balance Point Sensor (10Z23)NOTE: In Harmony III zoning system applications, terminal B and R are wired to

the Harmony III zoning system panel.

19

2.1.6. Defrost Tempering Kit

A defrost tempering kit (67M41)may be implemented in a dual-fuel (Option 3)system.Thiskitconsistsofathermostatprobe/switchwhichisinstalledbetweenthe furnaceand theevaporator coil to turn the furnaceon (at80°F)andoff (at90°F) during a defrost cycle. This tempers the discharge air and protects thecompressorfromhighrefrigerationpressuresduringdefrost.Thefollowingfigureshow the defrost temperating kit components and see “Figure 4.DischargeAirSensorInstallation”onpage8forlocationoftheprobe.

LIMIT CONTROL

MOUNTINGBRACKET

STRAINRELIEF

LABEL

WHEN FULLY ASSEMBLED,TABS ARE BENT DOWN TOHOLD CONTROL AND WIRESIN PLACE.

Figure 19. Defrost Tempering Limit Control

20

2.2. Variable Speed Motor (VSM) Air Handler and Heat Pump - Option 2 (Zoning System)

IMPORTANT!DO NOT MAKECONNECTIONSTO Y1 AND Y2

Vacation OFF for individualzone control.

Vacation ON for all zones to beconditioned at the same time.

Emergency Heat OFF to allowHeat Pump to provide heat.

Emergency Heat ON to force

vide all heating (disallows heatpump from providing any heat).

RCY1Y2OW1

R GW1W2CDSY1Y2

DAMPERS(Spring open, power close)

Thermostat 2 Thermostat 1

240VAC

24VAC

PRESSURE SWITCH21J18 (HFC-22)

27W13 (HFC-410AW C Y G R W C Y G R

IMPORTANT

VARIABLESPEED AIR

HANDLER

HEAT PUMP

System Configuration & E-Heatjumper settings

CONNECT TO THESAME POWER

SUPPLY AS THE AIRHANDLER

ZONE CONTROLTRANSFORMER

Connect thermostat gaugewire to “C” terminal on heat pump terminal strip.

Connection for remote vacation switch or Humiditrol Accessory

Discharge Air Sensor(88K38) is included

NOTE: Select number of HP stages by placing jumper in appropriate position(2-Stage HP illustrated)

NOTE: Do not wire “Y” wires(s) from the Harmony III control panel to the air handler terminals strip. Doing so will cause the motor to search for proper CFM.

Figure 20. Option 2 - Typical Lennox Heat Pump and Lennox Variable-Speed Air Handler (Troubleshooting)

21

2.3. Heat Pump System Start-Up and Checkout

IMPORTANTThezonecontrolsystempower-upmustoccuratthesametimeorbeforethefurnaceorairhandlerunitispoweredup.

2.3.1. Powering the System (All Systems)

1. Adjustallthermostatsettingssothatnodemandwilloccur.

2. Applypowertothezonepaneltransformerandtotheairhandlerandobservethefollowing:allfourdiagnosticLEDswilllight;theneachindividualdiagnosticLEDwilllightinsequence;thenallfourdiagnosticLEDswilllightandextinguish.

3. Finally,thestatuslightwillbegintoflash,indicatingproperoperation.Performheatpumpheatingcheckoutsreferencedinthissection.

2.3.2. Checkouts

2.3.2.1. Typical Heat Pump Heating Checkout (Single Zone)

Prerequisites:Zone1thermostatsettoheat.

OUTPUT STATUS LEDs

DAMPER 2,3,4 ONDAMPER 1 OFF

(W) RED ONPRESSURESWITCH LED ON

HEATING ONFAN ON

ELECTRIC HEATING ON (W/EVENT 3)

EVENT SEQUENCE:1- Y1 ON

2- Y2 (IF EQUIPPED) ONIF NO SIGNIFICANTWARMING AFTER 4 MIN.

3- W1 ON IF NOSIGNIFICANT WARMINGAFTER 4 MIN; THEN W2;THEN W3

1. Setzone1thermostatforaheatdemand;check:• Zone1thermostatWLEDon(heatingdemand).• DamperLED1off(damperopen).• DamperLEDs2,3,and4on(dampersclosed).• OutputHeatY1LEDon(compressoron).• HeatingLEDon.• FanLEDon.• PressureSwitchLEDon.Thecompressorintheoutdoorunitbeginsoperatingintheheatingmode.Atapproximatelythesametime,theindoorblowerstarts,operatingataspeedaccordingtothesettingofthePIABjumperforzone1.Itmaytaketheblower60to90secondstoreachthisspeed.

2. IfSingle-StageHeatPump-Skiptostep3.Thedischargeairsensorcontinuallysamplesairtemperature.If,after4minutes,airtemperatureisnotwarmingsignificantly,thehighspeedcompressorenergizes.OutputHeat Y2LEDon(highspeedcompressor).

3. Thedischargeairsensorcontinuallysamplesairtemperature.If,after(another)4minutes,airisnotwarmingsignificantly,auxiliaryheatsequencebegins:• ElectricHeating(E-Heating)LEDon.• OutputHeatW1on,followedby(ifavailable,andifnecessary)W2,andthenW3.

4. Removeheatdemandfromzone1.• AllLEDsoff,except:• DamperLEDs2,3,4on.Tochecktheamountofairbeingdeliveredtoeachzoneandtoconfirmthateachindividualzonedamperfunctionsproperly,repeatthesestepsforzones2-4.

22

2.3.2.2. Typical Heat Pump Heating Checkout (Multiple Zone)

Prerequisites:Allzonethermostatssettoheat.


OUTPUT STATUS LEDs

DAMPER 2,3,4 OFF

(W) RED ONPRESSURESWITCH LED ON




HEATING ONFAN ON

1. Applyheatingdemandtoallthermostats.• AllzonethermostatWLEDson(heatdemands).• OutputHeatLEDY1on(compressor).• HeatingandFanLEDson.• LEDsdampers1-4off(alldampersopen).• PressureSwitchLEDon.Thecompressorintheoutdoorunitbeginsoperatingintheheatingmode.Atapproximatelythesametime,theindoorblowerstarts,operatingataspeedaccordingtothePIABjumpersettingsforallzones.Itmaytaketheblower60to90secondstoreachthisspeed.

2. If Single-Stage Heat Pump - skip to step 3. The discharge air sensorcontinuallysamplesairtemperature.If,afterfourminutes,airtemperatureisnotwarmingsignificantly,thehighspeedcompressorenergizes.OutputHeatY2LEDon(highspeedcompressor).

3. Thedischargeairsensorcontinuallysamplesairtemperature.If,after(another)fourminutes,airisnotwarmingsignificantly,auxiliaryheatsequencebegins:• ElectricHeating(E-Heating)LEDon.• OutputHeatW1on,followedby(ifavailable,andifnecessary)W2,and

thenW3.

4. Removetheheatdemandfromallzones.• InputLEDsoff.• FanLEDoff(Bloweroff).• HeatingLEDsoff.• DamperLEDs-Lastzonethermostatdemandremoved:LEDisoff(this

zone’sdamperremainsopenduring3-1/2minutepurge);OtherzonesdamperLEDsareonduringthe3-1/2minutepurge(dampersclosed).After3-1/2minutedelay,alldampersLEDsgooff(dampersopen).

23

2.3.2.3. Typical Heat Pump Heating Checkout (Central Mode)

Prerequisites:• Centralmodeswitchon• RedLEDonthecentralmodefanswitchon.

OUTPUT STATUS LEDs

(W) RED ON

DAMPER 2,3,4 OFF

PRESSURESWITCH LED ON




HEATING ONFAN ON


CENTRALMODE ON

1. Setzone1thermostatforaheatdemand;check:• Zone1thermostatWLEDon(heatingdemand).• OutputHeatY1LEDon(compressoron).• HeatingLEDon.• AlldamperLEDsoff(dampersopen).• PressureSwitchLEDon.Theoutdoor-unitcompressorbeginsoperatingintheheatingmode(low-speedif2-stagecompressor).Atapproximately thesametime, the indoorblowerstarts,operatingataspeedaccordingtothePIABjumpersettingsforallzones.Itmaytaketheblower60to90secondstoreachthisspeed.

2. IfSingle-StageHeatPump-skiptostep3.Thedischargeairsensorcontinuallysamples air temperature. If, after fourminutes, air temperature is notwarmingsignificantly,thehighspeedcompressorenergizes.OutputHeatY2LEDon(highspeedcompressor).

3. Thedischargeairsensorcontinuallysamplesairtemperature.If,after(another)fourminutes,airisnotwarmingsignificantly,auxiliaryheatsequencebegins:• ElectricHeating(E-Heating)LEDon.• OutputHeatW1LEDon,followedby(ifavailable,andifnecessary)W2,and

thenW3.

4. Removetheheatdemandfromzone1.Uponremovalofthedemandfromzone1,check:• Zone1thermostatWLEDoff(noheatdemand).• OutputHeatY1,(Y2)LED(s)off.• FanandHeatingLEDsoff.

24

2.4. Heat Pump System Start-Up and Checkout

2.4.1. Troubleshooting Diagram

Do dampers respond to demand? 0volts AC = open. 24 volts AC =closed. Dampers should drive closedwhen 24 volts is jumpered to dampermotor.Is wiring correct & in good condition?

Are thermostats wired correctly?Does zone control system respond appropriately to demand?

tion relays may need to be used.24VAC supplied to each thermostat terminal R from zone control system?Check each thermostat for output signal when calling. Heating output W1? Cooling output Y1?

Error code present?

shooting/diagnosticsection of thismanual .

rectly for auxiliaryheat and cooling?

Is dischargeprobe installed?Is probe locatedin discharge air

rectly?

Does outdoor unit respond to demand?Is it operating properly?Test Defrost. Does outdoor unit initiate andterminate defrost correctly?W1 energized during defrost?

ately during defrost?

sponse to demand?

propriate outputs? During Cooling? DuringHeating? During Defrost? During Emer.Heating?24VAC from furnace transformer to R?

ing? Heating? Defrost? Emer. Heating?

mand changes? If no, does DS output varyfrom 0 to 25VDC?

Line Voltage to transformer?24VAC from transformer to zone control panel?Are all wire connections good? Are all wire connections correct?

Pressure Switch installed in correct position?

porarily blocking airflow in heating mode)?

sure condition is simulated (temporarily disconnecting switchsimulates high pressure).

DAMPERS

240VAC

24VAC

Thermostat 2 Thermostat 1W C Y G R

DISCHARGEAIR SENSOR

THERMOSTATS

Are PIAB jumpers set correctly?Only 1 jumper per Zone? (ZoneControl System Jumper Settings

duction jumpers set correctly?On heat pumps, Heating AirReduction must be 0%.Do jumpers provide appropriatespeed reduction? If no, checkindoor unit before replacingzone control panel.

Have heating and coolingstaging jumpers been set fordesired 2nd stage operation?

PRESSURESWITCH

RCY1Y2OW1

R GW1W2CDSY1Y2

HEAT PUMP

VARIABLESPEED AIR

HANDLER

W C Y G R

HUMIDITROL ZONINGACCESSORY CONTROL

Verify Air Handler

moved Verify NO connectionsmade to Y1 or Y2.

“C” connectedto “C”?

Fuses OK?

ZONE PANEL TRANSFORMER TO AIR

HAN

DLER

POW

ER SU

PPLY

Figure 21. Option 2 - Typical Lennox Heat Pump and Lennox Variable-Speed Air Handler (Troubleshooting)

25

2.4.2. Heat Pump Heating Operation

De-energizeW1 & W2@furnace

Dischargeair below

130ºF?

Discharge air above than

135ºF?

Dischargeair above than

135ºF?

Dischargeair 20ºF aboveheating stagingjumper setting

?

Dischargeair below heatingstaging jumper

setting?



?



?

sor stage; ramp indoor

ing jumper setting

Energize next heat stagesMultiple stages stage on

and off to maintain heatingstaging jumper setting

5-minutessince completion


?

HEATINGDEMAND

RECEIVED

Shutdowncompressor

stages 1 and 2and blower fan

Yes

No

No

Yes

No

Yes

Yes

No

Yes

No

No

YesNo

Yes

No

Yes

No

Yes

Shutdown allcompressor stages

and electric heat Yes

No



Heatingdemandsatisfied

?


?

Yes

5 mindelay

complete?

No


calling zones

ORDER OF STAGING:HP stg 1 (Y1)HP stg 2 (Y2)Elec strip stg 1 (W1)Elec strip stg 2 (W2)

ture at which the heat pump/electricheat is allowed to run is fixed at 135°F.

plied to a heat pump with electric heat,the electric heat will be staged ON tomaintainthedischargeairtemperature

tion.

5

2.4.3. Defrost Operations

Defrostcontrol detectsneed for defrost

cycle?

Yes

No

Yes

Harmony IIIcontrol energizesall compressor

stages

Heat Pumpenters defrost

Defrostcompleted

? No

Yes

Harmony III controlde-energizes all

compressor stages - usesauxiliary heat to complete

existing heat demand

Defrostperiod exceeds

20 minutes?

No

De-energizeall compressor

stages

Yes

No

NORMALHEAT PUMPOPERATION


?

Dual Fuel? Yes

No

Harmony IIIsends signal to

W1 at indoor unit

DefrostTempering

? Yes

No

HP cycles W1 OFF at90ºF and ON at 80ºFduring defrost cycle.

26

3. Gas Furnace

3.1. Typical Wiring for Variable-Speed Gas Furnace and Outdoor AC Unit - Option 1

IMPORTANT!DO NOT

NECTIONSTO Y1 AND

Y2






Y1Y2CR

R GW1W2CDSY1Y2

DAMPERS(Spring open,power close)

120VAC

24VAC

IMPORTANT! trical adjustments (jumpers and wiring changes) have been

IMPORTANTConnectthermostat‐gaugewire to integratedcontrol “C” terminal

Thermostat 2 Thermostat 1

W C Y G R W C Y G R

VariableSpeedFurnace

2‐Stage CondensingUnit shown (No Y2wire on 1-Stage Unit)

NOTE - Do not wire “Y” wire(s) from the

furnace terminal strip. Doing so causes themotor to “search” for proper CFM.

ON G71MPP &SLP98 Furnace -W2 Not required,but may beconnected toincrease firing rate.

CONNECT TOTHE SAME

POWERSUPPLY AS

THE GASFURNACE

SEE IMPO

RTA

NT

NO

TE BELO

W!

NOTE:SELECT # OFCOOL STAGESBY PLACINGJUMPER INAPPROPRIATEPOSITION.(2-STG CLGSHOWN)


Discharge Air Sensor (88K38)Included

Connections for remote vacation switch or Humiditrol zoningaccessory

Figure 22. Harmony III zoning system Option 1 - Typical Lennox Variable-Speed Gas Furnace and 1- or 2-Stage Air Conditioner

27

3.2. Furnace Variable Speed Motor Electrical Adjustments

NOTE: Follow all equipment installation instructions provided with each unit.The variable-speedmotor (VSM) in the furnace is controlled by the integratedfurnacecontrol (IFC).Adjustmentof thesedrivecontrols ismadebycutting theclippableon-boardlinksandselectingDIPswitchsettings.Thisisdescribedinthefollowingparagraphs.• ThefurnaceblowermotorspeedmustbeadjustedtoproducethezoningCFMrequirementsmanagedbythezonecontrolsystem.

• TheHarmonyIIIzoningsystemcontrol’spulsewidthmodulated(PWM)outputsignalisconnectedtotheDSterminalonthefurnacecontrol.ThePWMsignal,alongwithanyotherthermostatrequest(G,W1,orW1+W2),controlsfanspeedlinearlybetweentheminimumandmaximumCFMforthefurnaceasdeterminedbythecoolspeedDIPswitches(seeSLP98InstallationInstructionsforsettings).

• Locatetheintegratedcontrolinthefurnacecontrolboxarea.Beforeconnectingthezonecontrolpaneltotheintegratedcontrol,completetheapplicableelectricaladjustmentsshowninthefollowingfigures.

+

W915 2 Stage Compr (Y1 to Y2)—DO NOT CUT

W951 Heat Pump (R to O)—DO NOT CUT

W914 Dehum - Harmony (R to DS)—CUT IN ALL CASES

EAC

HUM

ON-BOARD LINKS:

Electrical Adjustments1. In all cases—cut the clippable on‐board link W914 Dehum - Harmony

(between R and DS, see figure 18); if not cut, the zone control panelDS fuse will blow.

tween Y1 and Y2).Do NOT cut any wires in the variable speed motor harness.

Figure 23. Typical Furnace VSM Electrical AdjustmentsSettheupperlimitofblowerCFMasfollows:

1. DeterminethemaximumsystemCFMrequirements(sumofalltheindividualzones).

2. FromtheBlowerMotorPerformancetables(seefurnaceInstallationInstructions)determine theHIGHspeedcoolDIPswitchsetting that corresponds to thisCFM.

3. SettheHIGHspeedcoolDIPswitchsettingontheintegratedcontroltothisvalue.

NOTE: The lower limit of blower CFM is factory set. It is not field adjustable.Theminimumairflowachievedbytheanyofthegasfurnaceswhenconnectedtoa

HarmonyIIIzoningsystemcontrollistedin“Table11.MinimumCFMforHarmonyIII zoningsystemwithVariableSpeedBlowerMotors (GasFurnaces)”onpage16.A 3%duty cycle corresponds to theminimumCFM, and a 97%duty cyclecorrespondstothemaximumCFM.NOTE: Any on/off delays present for a heating or cooling sequence are still present

with Harmony III zoning system control operation.

3.3. Variable Speed Motor Furnace System OperationsThedehumidificationon-boardclippablelinkW914Dehum-Harmony(RtoDS)ontheintegratedfurnacecontrolmustbecutforoperationwiththeHarmonyIIIzoningsystem control.Once the link is cut, the presence of theHarmony III™zoningsystem,versusastandarddehumidificationcontrol, isautomaticallydetectedbytheintegratedcontrol.

IMPORTANTDONOTalterblowerharness!

3.3.1. Operation

WhentheintegratedcontrolisproperlyconnectedtoaHarmonyIIIzonecontrol,operationisasfollows:• IntegratedcontrolDIPswitches1and2,whichconfigurethecontrolforoperationwithvarioustypesofthermostats,areignored.

• ThezonecontrolsendsaW1Signaltothefurnacewhichgoesthroughitsnormalignitionsequenceasdescribedinthefurnaceinstallationinstructions.

• Theblowerwillstartandoperateattheminimumblowerspeedaftera45seconddelay.

• AfterthetemperatureoftheDASrisesabove100ºFthezonecontrolwillprovideaPWMsignaltothefurnaceonterminalDSbasedupontheZonePIABJumperselections(andtheheatingairreductionjumper).

• Theblowerspeed(CFM)issetaccordingtothepulsewidthmodulated(PWM)signalfromtheHarmonyIIIzoningsystemcontrol.

• TheblowerspeedadjustsimmediatelywithPWMadjustments.• ThefurnacefiringrateisbasedoncurrentoperatingCFMandinternal lookuptableformidpointtemperaturerise.Ifresultingfiringrateisbelowminimumfiringrate, itwill operate atminimumfire rate.Accordingly, if resulting firing rate isabovemaximumfiringrate,itwilloperateatmaximumfiringrate.

• Firing rate adjusts anytime thePWMdeviates bymore than5% (e.g. 60%>65%).

NOTE: Integrated control DIP switches 14 through 19 are not disabled, and can be used in conjunction with Harmony III zoning system to increase or decrease airflow volume during heating operation.

NOTE: DIP switches 14-19 adjust firing rate when Harmony III zoning system is detected. Air volume is controlled by Harmony III zoning system. The

28

furnace looks at air volume and determines proper firing rate based on DIP switch 14-19 settings. See SLP98 Installation Instructions for adjustment options.

3.3.2. Integrated Furnace Control W2 terminal to Harmony III zoning system Control

SincethefurnaceautomaticallyadjustsfiringratetomatchCFMtoachieveatargettemperaturerise,connectionofHarmonyIIIzoningsystemcontroltoW2terminalontheintegratedcontrolisnotrequired.

WithW2connected,lowerfiringratescanbeusedforW1demandusuallyresultingingreatercomfortlevelsperzone.Iftemperaturecannotbemaintained,thenW2 willquicklyincreasefiringratestosatisfydemand.

Ifdischargeairtemperatureistoolow,theintegratedcontrolW2canbeconnectedtoHarmonyIIIzoningsystemcontroltocausethefurnacetoincreasefiringrate.Everytwominutes,theintegratedcontrollooksatW2.IfW2isON,thefiringrateincreasesby5%.This5%increaseisaddedtothedesiredfiringrateasdeterminedbythePWM.Therefore,ifa50%dutycyclecorrespondstoa70%firingrate,after2minutesofW2,thatsame50%dutycyclewillcorrespondtoa75%firingrate.Thiswilllastfortheremainderoftheheatcycle.

WhenW2goesfromONtoOFF,theintegratedcontroldecreasesthefiringrateby5%.

29

3.3.3. Installation Setup Worksheets

3.3.3.1. SLP98V — Cooling/Heating (Non-Heat Pump Applications)

JobName:

IndoorUnitModel:

OutdoorUnitModel:

Indoor Unit Setup:√Cuton-boardlinkW914DEHUMORHARMONY(RtoDS)onfurnaceIFCcontrol(ifnotcut,fusewillblowinHarmonyIIIzoningsystemcontrolboard)√W2connectionfromHarmonyIIIzoningsystemtoSLP98isoptional–seeHarmonyIIIzoningsystem/furnaceinstallationinstructionsfordetails√DIPswitchsettings(ONorOFF):

DIP Switch ON or OFF Condition

1 OFF DIPswitch1–leaveatfactorysetting–ignoredbyHarmonyIIIzoningsystem



4 ON DIPswitches4and5determineheatingblower“off”delay–recommended180seconds5 ON

6 OFF DIPswitches6and7–leaveatfactorysetting–ignoredbyHarmonyIIIzoningsystem7 OFF

8 DIPswitches8and9–coolingblowerspeed–determinesmaximumsystemCFM–seeG71MPPblowertables)9

10 DIPswitches10and11–coolingbloweradjust–determinesmaximumsystemCFM–seeG71MPPblowertables11


14 OFF DIPswitches14,15,and16–setslowfire,minimumcapacity,firingrate-DEFAULTSETTINGSHOWNandISRECOMMENDEDSTARTINGPOINT–seeHarmonyIIIzoningsystem/furnaceinstallinstruction

15 OFF

16 OFF

17 OFF DIPswitches17,18and19–setshighfire,100%capacity,firingrate-DEFAULTSETTINGSHOWNandISRECOMMENDED STARTINGPOINT–seeHarmonyIIIzoningsystem/furnaceinstallinstruction

18 OFF

19 OFF

Panel Setup:

9 Heatingstagingjumper Circleone:8590100110120 130 Recommended120deg-F

9 Zone1PIAB140FDASjumperinplace Circleone:YesNo

See“1.10.4.Zone1PIABJumpers–140ºFDAS”onpage10.

9 Coolingstagingjumper Circleone:505560 Selectdesireddischargeairtempduringcooling

9 Cont.AirReductionjumper Circleone:0255075 Percentageairflowreductionforcontinuousfanoperation

9 HeatingAirReductionjumper Circleone:02040 Percentageairflowreduction

forheatingmode

9 SystemConfigurationjumpers Circleone:HPGAS SettoGAS

9 Stages Circleone:2COOL1COOL Settomatchcondenser,1or2stage

9 Stages Circleone:2HP1HP Ignoredforgasheat,non-heatpumpapplication

9 E-HEATStages Circleone:DF123 Ignoredforgasheat,non-heatpumpapplication

9 DesiredtotalsystemCFMwithallzonescalling: TotalsystemCFMpertables: MinimumCFM:

9 Zone 1 Name: DesiredCFM: PIABSetting: ActualCFM:




Field Wiring Checklist

√ IndoorUnitWiringCompleted:

DS”onHarmonyIIIto“DS”onindoorunitconnected

”C”onindoorunitconnectedtoHarmonyIIIzoningsystemtransformer“C”,

Noconnectionto“Y1”or“Y2”onindoorunit.

√ OutdoorUnitWiringCompleted

√ Thermostatanddamperwiringcompleted

√ DischargeSensorwiredtoHarmonyIIIzoningsystem

30

3.3.3.2. SL280V, SL280NV, EL296V and SL297NV — Cooling/Heating (Non-Heat Pump)

JobName:

IndoorUnitModel:

OutdoorUnitModel:

Indoor Unit Setup: 9 Cuton-boardlinkW914DEHUMORHARMONY(RtoDS)onfurnaceIFCcontrol(ifnotcut,fusewillblowinHarmonyIIIzoningsystemcontrolboard)

9 DIPswitchsettings(ONorOFF):




3 ON DIPswitches3and4–BlowerOffDelaySwitchSettings,setDIPswitches3and4toON(180seconds)

4 ON DIPswitches4and5determineheatingblower“off”delay–recommended180seconds

5 OFF DIPswitches5and6-CoolingModeBlowerSpeed,setDIPswitches5and6toOFF(High-Factory)6 OFF

7 OFF DIPSwitches7and8-CoolingBlowerSpeedAdjustment,setDIPswitches7and8toOFF(FactoryDefault)8 OFF

9 OFF DIPSwitches9and10-CoolingModeBlowerSpeedRamping,setDIPswitches9and10toOFF(A-Factory)10 OFF

11 OFFDIPSwitches11,12and13-HeatingModeBlowerSpeed,setDIPswitches11,12and13toOFF(FactoryDefault)12 OFF

13 OFF

14 OFF DIPSwitches14and15-ContinuousBlowerSpeed,setDIPswitches14and15toOFF(38%ofHighCoolSpeed-FactoryDefault)15 OFF

Panel Setup: 9 Heatingstagingjumper Circleone:8590100110

120 130Recommended120deg-F

9 Zone1PIAB140FDASjumperinplace

Circleone:YesNo See“1.10.4.Zone1PIABJumpers–140ºFDAS”onpage10.



9 HeatingAirReductionjumper

Circleone:02040 Percentageairflowreductionforheatingmode

9 SystemConfigurationjumpers

Circleone:HPGAS SettoGAS




9 DesiredtotalsystemCFMwithallzonescalling:

TotalsystemCFMpertables: MinimumCFM:







DS”onHarmonyIIIto“DS”onindoorunitconnected

”C”onindoorunitconnectedtoHarmonyIIItransformer“C”,

Noconnectionto“Y1”or“Y2”onindoorunit.√ OutdoorUnitWiringCompleted

√ ThermostatandDamperWiringCompleted


31

3.3.4. Zone Control Operation in a Gas Furnace SystemThissectiondescribestheoperationofthezonecontrolinasystemthatusesagasfurnace.

3.3.4.1. Zone Thermostats

OnlyelectronicthermostatswithaCterminalmaybeusedwiththezonecontrolsystem.Thezonecontrolsystemdistinguishesbetweenheatpumpandheat/coolapplicationsviatheSYSTEMjumperplacementonthezonecontrolpanel.

1. Cool / Heat / Auto-Changeover Modes—Zonethermostatssendaheatingorcoolingsignaltothezonecontrolpanel.Thermostatservicingzone1isthecentralcontrolthermostat.Zones2,3and4eachhavetheirownthermostat.Thermostatsmaybestandardorauto-changeovertype.Heatandcooldemandspresentatthesametimefromdifferentzones(opposingdemands)aresatisfiedonafirstcomefirstservedbasis.Ifaheatingdemandand a cooling demand reach the zone control panel at the same time, theheatingdemandissatisfiedfirst.Ifopposingdemandspersist,thesystemwillworktosatisfythecurrentdemandforamaximumof20minutes,thenswitchoverand try tosatisfy theopposingdemand foramaximumof20minutes.Wheneitherdemandissatisfied,thesystemworkstosatisfytheotherdemand.

NOTE: Allowing opposing demands to persist may consume excess energy. If this condition continues, check the installation (i.e. zone arrangement, supply registers, return registers, zone loads etc.) and make adjustments as necessary. “Table 14. Time Delays” on page 60 shows the time delays that may be expected when opposing demands are received from the zone thermostats.

Thezonecontrolsystemacknowledgesaneworopposingdemandassoonasit isreceivedbyilluminatingthatzone’sthermostatinputlights.Ifthefirstdemand isnotsatisfiedby the time thedelayselapse, thesystemswitchesoverandbeginssatisfying theopposingdemand.During theswitch-over,adelaymaybeimposedbeforethesystembeginssatisfyingthenewdemand.

2. Fan On / Auto Mode—Zonethermostatscansendacontinuousfansignalto the zone control system.The zone control systemwill signal the blowertosupplyair tozonescalling forcontinuous fanwhilenootherconditioningcallsexist.When thezonecontrolsystemreceivesaconditioningcallwhilesatisfyingademandforcontinuousfan,itsignalsthedampercontrollingthecontinuous-fanzonetoclose.Aftertheconditioningdemandissatisfied,thecontinuous-fanzonedamperissignaledtoreopen.

3.3.4.2. Balance Point Setting

(Dual Fuel Systems) Balance Point Sensor (kit 10Z23) communicates with thezone control panel whether or not to force theGas Furnace to satisfy heatingdemands,basedonacomparisonof theBalancePointsettingwith theoutdoortemperature.Terminals2-3closeontemperaturefalltolockoutheatpump.

3.3.4.3. Zone Mode

Thezonecontrolmode(VacationswitchOFF)utilizesthezonecontrolsystem’sfullpotential.Whileinthismode,thezonecontrolsystemwillrespondtodemandsfromanyzone,controllingdampersandregulatingblowerCFMtomaintaincomfort.Whenthesystemisinzonemode,thezonecontrolsystemrespondstodemandsfromanyzonethermostat.TheonlyOPENsupply-airdampersarethosezonesfromwhichademandwasreceived;allotherdampersareCLOSED.ThebloweroperatesataspeedbasedonthepositionoftheZonePIABselectionjumpers(andtheheatingairreductionjumper,ifacallforheatispresent).NOTE: To ensure that the zone control performs optimally, avoid mixing air

between the zones.

3.3.4.4. Central (Vacation) Mode

Whenincentralmode(VacationswitchON),thesystemrespondsonlytoheatingor coolingdemands from the central control (Zone1) thermostat; all zoneswillreceiveconditionedair.Alldampersremainopenandthebloweroperatesatfullspeed(minustheamountselectedbytheheatingairreductionjumper).InFan-Automode,theblowerwillcycleonandoffwitheachdemand.Duringgasorelectric-stripheating,theblowermaycontinueaftertheendofademanduntiltheheateriscooledsufficiently.

3.3.4.5. Cooling Operation

When theHarmony III™ zoning system receives a thermostat cooling call, thefollowingeventsoccur:• Thezonecontrolcheckstomakesureithasbeenatleastfiveminutessincethelastcoolingcallendedtopreventstartingagainsthighheadpressures.

• Whentimed-offdelay issatisfied, thezonecontrolstarts theoutdoorunitwith1st-stagecompressorandslowlyincreasestheindoorblowerspeedtoachieveproperCFM.Fourminutesmustelapseatthisstatetoallowthesystemtoreachsteady-stateoperationbeforestagingagain.

• The zone control checks the discharge air sensor for proper temperature. Ifmeasuredtemperatureis7ºFormoreabovethecoolingstagingjumpersetting,thenY2energizes(ifavailable). Ifbothstagesofcoolingareenergizedand4minuteshaselapsedsincethelaststagingevent,andthedischargeairsensor(DAS)detectsa temperature less than thecoolingstaging jumper, thenY2 isstagedoff.

• If, at any time, the discharge air sensormeasures a temperature of 45ºF orbelow, the zone control de-energizes theY1 and/orY2 output, stopping thecompressorandpreventingtheindoorcoilfromfreezingup.ThecompressorwillnotbeenergizedagainuntilthetemperatureattheDASrisesby10ºFandthetimed-offdelayexpires.Duringthistime,continuousfanissuppliedtothezonescallingforcooling.

32

3.3.5. Installation Setup Worksheets for Honeywell 2-Stage IFC Control — Cooling/Heating (Non-Heat Pump)

JobName:

IndoorUnitModel:

OutdoorUnitModel:

Indoor Unit Setup: 9 Cuton-boardlinkW914DEHUMORHARMONY(R to DS)onfurnaceIFCcontrol(ifnotcut,fusewillblowinHarmonyIIIzoningsystemcontrolboard).

9 Cutandtapewiresfrompin#2andpin#13onplugJ46ofthevariablespeedmotorwiringharnessroutedfromthemotortothefurnaceIntegratedcontrol(IFC).

9 FurnaceIFCControlDIPswitchsettings(ONorOFF):


1 OFF DIPswitch1mustbesettoOfffor2-stageheatingoperation

2 OFF DIPswitch2determines2ndstageheattimedelayandisignoredbyHarmonyIIIzoningsystem

3 ON DIPswitches3and4determinesheatingbloweroffdelay,recommendedis180sec4 ON

5 DIPswitches5and6determines2ndstagecoolingblowerspeedormaximumsystemairvol.6

7 DIPswitches7and8determineblower“adjust”settingformaximumsystemairvolume8

9 OFF DIPswitches9and10determinescoolingblowerrampingprofileandisignoredbyHarmonyIIIzoningsystem10 OFF

11 OFF DIPswitches11and12determinesheatingblowerspeedandisignoredbyHarmonyIIIzoningsystem12 ON

Panel Setup:

9 Heatingstagingjumper Circleone:8590100110120 130 Recommended120deg-F

9 Zone1PIAB140FDASjumperinplace Circleone:YesNo

See“1.10.4.Zone1PIABJumpers–140ºFDAS”onpage10.



9 HeatingAirReductionjumper Circleone:02040 Percentageairflowreductionfor

heatingmode

9 SystemConfigurationjumpers Circleone:HPGAS SettoGAS

9 Stages Circleone:2COOL1COOL

Settomatchcondenser,1or2stage











DSonHarmonyIIItoDSonindoorunitconnected

ConindoorunitconnectedtoHarmonyIIItransformerCNoconnectiontoY1orY2onindoorunit.



√ DischargesensorwiredtoHarmonyIIIzoningsystem

33

3.4. Furnace System Start-Up and Checkout

IMPORTANTThezonecontrolsystempower-upmustoccuratthesametimeorbeforethefurnaceorairhandlerunitispoweredup.

3.4.1. Start-Up the System (All Models)


2. Applypowertothezonepaneltransformerandtotheairhandlerandobservethefollowing:allfourdiagnosticLEDswilllight;theneachindividualdiagnosticLEDwilllightinsequence;thenallfourdiagnosticLEDswilllightandextinguish.

3. Finally,thestatuslightwillbegintoflash,indicatingproperoperation.Performgasheatingchecks.

3.4.2. Checkouts

3.4.2.1. Typical Gas Heating Checkout (Single Zone)

Prerequisites:Zone1thermostatsettoheat.

OUTPUT STATUS LEDs

DAMPER 2,3,4 ONDAMPER 1 OFF

(W) RED ON

HEATING ONFAN ON

W1 ON

1. Setzone1thermostatforaheatdemand;check:• Zone1thermostatWLEDon(heatingdemand).• DamperLED1off(damperopen).• DamperLEDs2,3,and4on(dampersclosed).• OutputHeatW1LEDon(furnaceon).• HeatingLEDon.Thefurnacebeginsignitionsequenceafterzone1hasdemandedheat.Thezonecontrolsystemwillstart the furnacebloweron lowspeed(0PIAB)45secondsafterthecombustioncyclehasbegun..

2. When100ºFwarmairissensedbythedischargeairsensor,thefanLEDwilllightand theblowerwill slowly increase to speed requiredby thezonecalling.ThebloweroperatesatspeedsettingofPIABjumperforzone1andthe jumperforheatingairreduction.Itmayrequire60-90secondstoreachthisspeed.

3. Setzone1thermostatforNOheatdemand;check:• Zone1thermostatWLEDoff(noheatdemand).• OutputHeatW1LEDoff.• FanLEDoff.• HeatingLEDoff.• DamperLEDs2-4remainonuntilafter3-1/2minutepurge;thenoff.Tochecktheamountofairbeingdeliveredtoeachzoneandtoconfirmthateachindividualzonedamperfunctionsproperly,repeatthesestepsforzones2-4.

34

3.4.2.2. Typical Gas Heating Checkout (Multiple Zone)

Prerequisites:Allzonethermostatssettoheat.

OUTPUT STATUS LEDs

DAMPER 2,3,4 OFF

(W) RED ON

HEATING ONFAN ON

W1 ON

1. Applyheatingdemandtoallthermostats.• AllzonethermostatWLEDson(heatdemands)• LEDsdampers1-4off(alldampersopen)• OutputHeatLEDW1on(furnaceon)• HeatingLEDsonThefurnacebeginsignitionsequenceafteraheatdemandisdetected.Thezonecontrolsystemwillstartthefurnacebloweronlowspeed(0PIAB)45secondsafterthecombustioncyclehasbegun.

2. When100ºFwarmair issensedby thedischargeairsensor, the fanLEDcomesonandtheblowerwillslowlyincreasetospeedrequiredbythezonescalling.Thebloweroperatesataspeedequivalent to thesumofall zonePIAB jumpersbut at amaximumnot to exceed the settingof theheatingairreductionjumper.Itmaytaketheblower60to90secondstoreachthisspeed.

3. SetallzonethermostatsforNOheatdemands;check:• OutputHeatW1LEDoff• HeatingLEDoff• FanLEDoff(blowerturnsoffafterdelay)• AllzonethermostatWLEDsoff• DamperLEDs-Lastzonethermostatdemandremoved:LEDisoff(this

zone’sdamper remainsopenduring3-1/2minutepurge);otherzonesdamperLEDsareonduringthe3-1/2minutepurge(dampersclosed).After3-1/2minutedelay,alldampersLEDsgooff(dampersopen).

35

3.4.2.3. Typical Gas Heating Checkout (Central Mode)

Prerequisites:• Centralmodeswitchon• RedLEDonthecentralmodefanswitchon.

OUTPUT STATUS LEDs

(W) RED ON

DAMPER 2,3,4 OFF

HEATING ONFAN ON

CENTRALMODE ON

W1 ON

1. Setzone1thermostatforaheatdemand;check:• Zone1thermostatWLEDon(heatingdemand).• OutputHeatY1LEDon(furnaceon).• HeatingLEDon.• AlldamperLEDsoff(dampersopen).

2. ThefurnacewillbeginitsignitionsequenceafterZone1hasdemandedheat.Thezonecontrolsystemwillstartthefurnacebloweronlowspeed(0PIABair)45secondsafterthecombustioncyclehasbegun.

3. When100ºFwarmairissensedbythedischargeairsensor,thefanLEDwilllightandtheblowerwillslowlyincreasetospeed.Theblowerwilloperateataspeedequivalent to thePIABcalculated forallzonescalling, taking intoaccounttheheatingairreductionjumperposition.Itmaytaketheblower60to90secondstoreachthisspeed.

4. Removetheheatdemandfromzone1(noheatinputoroutputandnoblowerdemand).Uponremovalofthedemandfromzone1,check:• Zone1thermostatWLEDoff(noheatdemand).• OutputHeatW1LEDoff.• FanandHeatingLEDsoff.

36

3.5. Zoning System with Gas Furnace Troubleshooting - Option 1

3.5.1. Troubleshooting Diagrams


Are thermostats wired correctly?Does zone control system respond appropriately to demand?Heat/cool thermostat used? (Must not use heat pump thermostat.)Does electronic thermostat have relay switching output? If not, isolation relays may need to be used.24VAC supplied to each thermostat terminal R from zone control system?Check each thermostat for output signal when calling. Heating output? Cooling output?


Fuses OK?

Error code present? Ifso, see troubleshooting/diagnostic section of thismanual

rectly for furnace andcooling?


rectly?

Does outdoor unit respond todemand?Is it operating properly?

gized in response to demand?

ergize appropriate outputs?

ing?

er to R?

puts?Does blower speed change aszone demand changes? If no,does DS output vary from 0 to25VDC?


(No pressure Switch should be installed.)

DAMPERS

120VAC

24VAC


DISCHARGEAIR SENSOR

THERMOSTATS

Y1Y2CR

R GW1W2CDSY1Y2

VARIABLE SPEEDFURNACE

2‐STAGECONDENSING

UNIT

Are PIAB jumpers set correctly?Only 1 jumper per Zone? (Zone ControlSystem Jumper Settings (NOTE: Zone 1 may have a secondjumper on 140F DAS pins)Has 140F DAS jumper been installed (ifrequired)

duction jumpers set correctly?Do jumpers provide appropriatespeed reduction? If no, checkindoor unit before replacingzone control panel.


140F DASjumper

W C Y G R


ZONE PANEL TRANSFORMER

moved

Verify NO connectionsmade to Y1 or Y2.

TO FU

RN

ACE

POW

ER SU

PPLY

Figure 24. Integrated Control Cable Modifications for Furnaces (Two Stages)

37


Are thermostats wired correctly?Does zone control system respond appropriately to demand?Heat/cool thermostat used? (Must not use heat pump thermostat.)Does electronic thermostat have relay switching output? If not, isolation relays may need to be used.24VAC supplied to each thermostat terminal R from zone control system?Check each thermostat for output signal when calling. Heating output? Cooling output?


Fuses OK?

Error code present? Ifso, see troubleshooting/diagnostic section of thismanual

rectly for furnace andcooling?


rectly?

Does outdoor unit respond todemand?Is it operating properly?

gized in response to demand?

ergize appropriate outputs?

ing?

er to R?

puts?Does blower speed change aszone demand changes? If no,does DS output vary from 0 to25VDC?


(No pressure Switch should be installed.)

DAMPERS

120VAC

24VAC


DISCHARGEAIR SENSOR

THERMOSTATS

Y1Y2CR

R GW1W2CDSY1Y2

Are PIAB jumpers set correctly?Only 1 jumper per Zone? (Zone ControlSystem Jumper Settings (NOTE: Zone 1 may have a secondjumper on 140F DAS pins)Has 140F DAS jumper been installed (ifrequired)

duction jumpers set correctly?Do jumpers provide appropriatespeed reduction? If no, checkindoor unit before replacingzone control panel.


140F DASjumper

W C Y G R



TO FU

RN

ACE

POW

ER SU

PPLY

H MC C

WRGAS VALVE

BROWN

ORANGE

12B

IFC

IFC9B

YELLOW

CONNECT HARMONY III W2 DIRECTLY TO THE HIGH STAGE TERMINAL ON GAS VALVE

(EXCEPT -030 MODEL)

H MC C

WRGAS VALVE

BROWN ORANGE12B

IFC

IFC9B

YELLOW

FACTORY WIRING MODIFIED WIRING

2-STAGE OUTDOOR CONTROL

VARIABLESPEEDFURNACECONTROL

Verify that Furnace control dehumidlink it cut.

Verify that NO connections are made to Y1 or Y2.

DEH

UM

HEA

TPU

MP

2STA

GE

COM

P

CUT DEHUM LINK

VARIABLE SPEED FURNACE CONTROL

Figure 25. Integrated Control Cable Modifications for Furnaces - ML180UHV Models Only

38

3.5.2. Gas Heating Operation

3-Minutessince completion


?

Energize W1 @furnace; Rampindoor blower tominimum CFM

setting

Dischargeair above

100°F?


setting?

Ramp indoorblower to

heating stagingjumper setting

3-Minutesminimum run time


?



?

No

Yes

No

Yes

No

No

Yes

Yes Yes

Yes

No

No

No

Yes

Yes

No

De-energizeW2

Energize W2@ furnace


HEATINGDEMAND

RECEIVED

BLOWERSHUTDOWN

Yes

NoYes

NoYes

No

De-energizeW1 @ furnace

Hold dampersopen for 3½

minutes


REFER TO DISCHARGE AIRUPPER LIMIT DIAGRAM() FOR UPPER LIMITAND DIFFERENTIAL DETAILS.

Shut down allheat stages

Isdischarge

air at upperlimit

?

Doesdischarge airtemp. meet

heating stagingdifferential

?

Isdischarge

air at upperlimit

?


? Heatingdemandsatisfied

?


?

Dischargeair falls to

130°F?

No

Yes


calling zones

Yes

5 mindelay

complete?

No

3.5.3. Discharge Air Upper Limit and Differential Temperatures

Discharge air upper limit is160ºF unless 140ºF DASjumper installed

To / from the appropriate

gas heating ordual fueldiagram

Furnaceenergized

No

Yes

No

Yes

No


Isdischarge

air at upperlimit

?

3-minute

pleted?

Yes

Differential is 20ºF aboveheating staging jumpersetting with the followingexception:Differential is 15ºF if the 140ºF DAS jumper is in place on PIAB 1 terminalsander is on 120 or 130.



?

39

4. air Handlers

4.1. Variations on Common AC Unit Applications

4.1.1. Heating/Cooling Equipment InstallationFollowallequipmentinstallationinstructionsprovidedwitheachunit.

4.1.2. Air Handler WiringAfter theairhandlerunit is installed,fieldwire the linevoltageasshown in theinstallationinstructionsprovidedwiththeunit.Usethermostatwiretoconnecttheairhandlertothezonecontrolpanelandtoconnectwirefromzonecontrolpanel24VCtoairhandlerterminalstripC(24VACcommon)bluewireinCBX25UHVairhandler..NOTE: Be sure to remove the factory installed jumper bar between W1 to W2

and W2 to W3 (CBA38MV, CBX40 or CBX32MV rev 06) or remove the jumper wires between R to W1 and R to W2 (CBX32MV prior to rev 06). CBX25UHV does not have any factory jumpers.

4.1.3. VariationsSeveralvariationsmayberequiredforspecificapplications.Thefollowingfigureshows alternate wiring and describes specific jumper configurations and otherspecialmodificationsrequiredforeachvariation.

For any option or variation, connect thermostat wire between “C” on terminal strip(s) of controlled equipment and zone control

COOLING ONLY

System configuration jumpers:GAS; 1COOL or 2COOL;Others do not matter.

As applicable, cut jumpers and harnesswires

HEATING ONLYNOTE - JUMPER between RC and RHmust be in place on the control!

Y1Y2CR

R GW1W2CDSY1Y2

Y1Y2O

RCW1-Def

RHG

W1W2W3DS

Equipment

Equipment

CondensingUnit

VSM AirHandler


Figure 26. Cooling Only For any option or variation, connect thermostat wire between “C” on terminal strip(s) of controlled equipment and zone control

Y1Y2CR

R GW1W2CDSY1Y2

System configuration jumpers:GAS; 1COOL or 2COOL;Others do not matter.

AHC (prior to revision 06): Cut or remove 24 volt jumper Y1to DS.AHC (revision 06): Cut R to DS clippable link on air handlercontrol.

cation is not required.- Cut or remove 24v jumper Jumper Y1 to DS- Remove Pink wire from TB1-W1 to J46-2 on CBWMV

CBX25UHV does not have factory jumper between R to DS.NOTE - K212 field hookup relay must be field provided on theCBX25UHV, CBX32MV and CBX40UHVNOTE - DAS must be located downstream of the cooling coil andHW coil

Y1Y2O

RCW1-Def

RHG

W1W2W3DS

Equipment

Equipment

CondensingUnit CBX25UHV, CBWMV,

CBX32MV ORCBX40UHV USEDWITH HOT WATERCOIL

TO BOILER OR ZONECONTROL

K212 (CAT#67K66) FIELDHOOKUPRELAY MUSTBE PROVIDEDON CBX25UHV,CBX32MV ORCBX40

VSMAir

Handler

TANT! DONOT MAKE

TIONS TOY1 AND Y2

Figure 27. Hot Water Coil and Current Lennox Air Handlers

40

System configuration jumpers:HP; 1COOL or 2COOL.

E-Heat stage jumper set on #agreeing with # of available heatstages.E-HEAT Selector Switch alwaysON.As applicable, cut jumpers andharness wires.

Y1Y2CR

R GW1W2W3CDSY1Y2

Y1Y2O

RCW1-Def

RHG

W1W2W3DS

Equipment

Equipment

CondensingUnit

VSM AirHandler

tric HeatFor any option or variation, connect thermostat wire between “C” on terminal strip(s) of controlled equipment and zone control


Figure 28. Cooling with Electric Heat

4.2. Electrical Adjustments

4.2.1. Communicating Indoor ControlAsillustratedinthefollowingdiagram,makethefollowingadjustments:

1. Cuton-boardlinkR to DS(DehumorHarmony).

2. RemovejumpbarsfromW1 to W2andW2 to W3.

3. DONOTCUTon-boardlinksY1-Y2 2 STAGE COMPRandR-O HEAT PUMP.

CUT on boardLink R-DS

RemoveW1-W2 and W2-W3

Jumper Bars from theterminal strip

DO NOT CUTon board links

Y1-Y2 2 Stage Comprand R-0 Heat Pump

Figure 29. Electrical Adjustments for Air Handler Control CBX32MV (revision 06) and CBX40UHV

4.2.2. Non-Communicating Indoor ControlTheseairhandlerblowermotorsarecontrolledbytheBDC3drivecontrol;CFMadjustmentIsbyjumpersettingselection.LocatetheBDC3boardintheblowercontrolbox.BeforeconnectingthezonecontrolpaneltotheBDC3board,completealloftheapplicableelectricaladjustmentsasshowninthefollowingfigure.NOTE: Before cutting wires or jumpers, be sure your installation is not affected by

“4.1. Variations on Common AC Unit Applications” on page 39.

14

7

36

9

K20 INDOORBLOWER RELAY

JP1

BDC3

Electrical AdjustmentsAs shown in this diagram, make the following adjustments:In all cases except “Cooling Only” or CBWMV units:Cut wire near the BDC3 board JP1 pin 2Tape exposed end of short JP1 pin 2 wireRe-route wire connected to K20 terminal 4; strip end andconnect to terminal “G” (K20 wiring change not requiredon CBWMV)If CBWMV, remove pink wire TB1-W1 to J46-2

DO NOT CUT jumper R - ODO NOT CUT Jumper Y1 - Y2In all cases, CUT Jumper DS - Y1

q

qw

w

e

e

r Except for cooling onloy units, remove any jumperbetween R-W2 and R-W3

r

Figure 30. Electrical Adjustments for Air Handler Control CBX32MV (pre-rev. 06) and CBWMV

41

RECONNECT THISEND TO G PIGTAIL

CUT HERETAPE OFFTHIS END

Figure 31. Electrical Adjustments for Air Handler Control CBX25UHVAsshowninthefigureabove,makethefollowingadjustments:• Bluewirethatgoesbetweenplug#2of thecircuitboardandonesideof thecontactsontheBRrelaymustberemovedandconnectedtotheGpigtail.Tapeoffendofwiringgoingtothecircuitboardjackplug.Ifthiswireisnotremoved,theDSsignalfromtheHarmonyIIIzoningsystemcontrolwillnotbeabletovarythespeedoftheindoorblowermotor.

• ConnectionfromBRrelaytoGrequiredtoprovidebloweroperationduringelectricheatsequencershutofftimeperiodafterdemandends.Otherwiseelectricheatcanremainonforaperiodwithoutbloweroperationandtriponeshotthermallimitsonelements.

42

4.2.3. Installation Worksheets

4.2.3.1. Cooling/Heating with Electric Strip Heat (Non-Heat Pump)

JobName:

IndoorUnitModel:

OutdoorUnitModel:

CBX32MV, Rev 6 or higher, CBX40UHV and CBA38MV Indoor Unit Setup:

9 Cuton-boardlinkRtoDS“DEHUMorHARMONY” 9 Removeanyfactory-installedjumpersbarsfromW1 to W2orW2 to W3. 9 Airhandlercontroljumpersettings:

Function Settings Condition

COOL Thissetting,alongw/ADJUSTsetting,determinesmaximumsystemCFM(Seeblowertables)

ADJUST Settingaffectsbothheatingandcoolingblowerspeeds(seeblowertablestodeterminesetting)

HEAT HIGH Heatingblowerspeedselection–IgnoredbyHarmonyIIIzoningsystem

DELAY 4 Coolingblowerramping–IgnoredbyHarmonyIIIzoningsystem

BLOWERONLYCFM Continuousfanspeed–IgnoredbyHarmonyIIIzoningsystem

EVENHEAT EVENHEATisnotusedwithHarmonyIIIzoningsystem


110 120 130Recommended120deg-F














TotalsystemCFMpertables:

MinimumCFM:







DSonHarmonyIIItoDSonindoorunitconnectedConindoorunitconnectedtoHarmonyIIItransformerC,NoconnectiontoY1orY2onindoorunit.




43

JobName:

IndoorUnitModel:

OutdoorUnitModel:

CBX25UHV (all units) and CBX32MV units prior to Revision 06 Indoor Unit Setup: 9 RemoveDStoY1jumper” 9 NojumperbetweenDSandY1onCBX25UHV 9 OntheCBX32MVthewirefromK20terminal4toBDC3boardJP1pin2mustbere-routedtoestablishanelectricalconnectionbetweenK20terminal4andterminalG.CutthewirenearJP1pin2.

9 UsingthewirestillconnectedtoK20terminal4,stripthecutendandconnectittoterminalG. TapetheexposedendoftheshortJP1pin2wire.

9 OntheCBX25UHVthebluewirethatgoesbetweenplug#2ofthecircuitboardandonesideofthecontactsontheBRrelaymustberemovedandconnectedtotheGpigtail.Tapeoffendofwiregoingtothecircuitboardjackplug.

9 Removeanyfactory-installedjumpersbetweenterminalRandW1,W2,orW3.NojumperbetweenRandW1orW2onCBX25UHV.

9 BDC3controlclipjumpersettings(CBX25UHVandCBX32MV):






















MinimumCFM:







DSonHarmonyIIItoDSonindoorunitconnectedConindoorunitconnectedtoHarmonyIIItransformerC,NoconnectiontoY1orY2onindoorunit.




44

4.2.3.2. Heat Pump — Electric Strip Heat

JobName:

IndoorUnitModel:

OutdoorUnitModel:

CBX32MV, Rev 6 or higher, CBX40UHV and CBA38MV Indoor Unit Setup: 9 Cuton-boardlinkR to DS“DEHUMorHARMONY” 9 Removeanyfactory-installedjumpersbarsfromW1 to W2orW2 to W3. 9 Airhandlercontroljumpersettings:
























MinimumCFM:







DSonHarmonyIIItoDSonindoorunitconnectedConindoorunitconnectedtoHarmonyIIItransformer C.

NoconnectiontoY1orY2onindoorunit.√ OutdoorUnitWiringCompleted



45

JobName:

IndoorUnitModel:

OutdoorUnitModel:

CBX25UHV (all units) and CBX32MV units prior to Revision 06 Indoor Unit Setup: 9 RemoveDS to Y1jumper” 9 NojumperbetweenDSandY1onCBX25UHV 9 OntheCBX32MVthewirefromK20terminal4toBDC3boardJP1pin2mustbere-routedtoestablishanelectricalconnectionbetweenK20terminal4andterminalG.CutthewirenearJP1pin2.

9 UsingthewirestillconnectedtoK20terminal4,stripthecutendandconnectittoterminalG. TapetheexposedendoftheshortJP1pin2wire.



9 BDC3controlclipjumpersettings(CBX25UHVandCBX32MV


COOL Thissetting,alongw/ADJUSTsetting,determinesmaximumsystemCFM(seeblowerCFMtables)









9 Cont.AirReductionjumper

Circleone:0255075 Percentageairflowreductionforcontinuousfanoperation











MinimumCFM:







DSonHarmonyIIItoDSonindoorunitconnectedConindoorunitconnectedtoHarmonyIIItransformer C.




46

4.2.3.3. Cooling Only or Cooling with Hot Water Coil (Non-Heat Pump)

JobName:

IndoorUnitModel:

OutdoorUnitModel:

CBX32MV, Rev 6 or higher, CBX40UHV and CBA38MV Indoor Unit Setup: 9 Cuton-boardlinkR to DS“DEHUMorHARMONY” 9 ForHotWaterCoilOnly—AddK212RelayandwireperHarmonyIIIwiringdetail.NOTE-Dischargeairsensormustbelocateddownstreamofcoolingcoilandhotwatercoil.

9 Airhandlercontroljumpersettings:
























MinimumCFM:

9 CBunit“minimum”CFM____________(determinedbyunitspeclistedbelowunitblowertable)

√Zone1 Name: DesiredCFM: PIABSetting: ActualCFM:




NOTE: All of the above are recommended starting positions for DIP switches and Harmony III zoning system jumpers. Slight variations may be required during system start up and operation checks.



DSonHarmonyIIItoDSonindoorunitconnectedConindoorunitconnectedtoHarmonyIIItransformerC



√ DischargeSensorwiredtoHarmonyIIIzoningsystemandifahotwatercoilisused,thesensormustbelocateddownstreamofthehotwatercoil.

47

JobName:

IndoorUnitModel:

OutdoorUnitModel:

CBX25UHV (all units) and CBX32MV units prior to Revision 06 Indoor Unit Setup: 9 RemoveDStoY1jumper” 9 NojumperbetweenDSandY1onCBX25UHV 9 OntheCBX32MVthewirefromK20terminal4toBDC3boardJP1pin2mustbere-routedtoestablishanelectricalconnectionbetweenK20terminal4andterminalG.CutthewirenearJP1pin2.

9 UsingthewirestillconnectedtoK20terminal4,stripthecutendandconnectittoterminal G. TapetheexposedendoftheshortJP1pin2wire.



9 BDC3controlclipjumpersettings(CBX25UHVandCBX32MV


COOLThissetting,alongwithADJUSTsetting,determinesmaximumsystemCFM(seeblowertables)

ADJUSTSettingaffectsbothheatingandcoolingblowerspeeds(seeblowertablestodeterminesetting)

HEAT 4 Heatingblowerspeedselection–IgnoredbyHarmonyIIIzoningsystem


















MinimumCFM:

9 CBunit“minimum”CFM____________(determinedbyunitspeclistedbelowunitblowertable)





NOTE: All of the above are recommended starting positions for DIP switches and Harmony III zoning system jumpers. Slight variations may be required during system start up and operation checks.



DSonHarmonyIIItoDSonindoorunitconnectedConindoorunitconnectedtoHarmonyIIItransformerC



√ DischargeSensorwiredtoHarmonyIIIzoningsystemandifahotwatercoilisused,thesensormustbelocateddownstreamofthehotwatercoil.

48

5. dual Fuel (OPtiOn 3)Followallequipmentinstallationinstructionsprovidedwitheachunit.

5.1. Zone Control System Wiring - Option 3After theheatpumpunit is installed,fieldwire the linevoltageasshown in theinstallationinstructionsprovidedwiththeunit.Usethermostatwiretoconnecttheheatpumptothezonecontrolpanelasillustratedinthefollowingfigure.


Thermostat 2 Thermostat 1W C Y G R W C Y G R

IMPORTANT! Connectivity is NOT COMPLETE until allelectrical adjustments (jumpers and wiring changes) have

BALANCE POINTSENSOR Kit 10Z23

DAMPERS(Spring open, power close)

PRESSURE SWITCH21J18 (HFC-22)

27W13 (HFC-410A) Y R B 120VAC

24VAC






RCY1Y2OW1

R GW1W2CDSY1Y2

IMPORTANTConnectthermostat‐gaugewire to integratedcontrol “C” terminal

HEAT PUMP

VARIABLESPEEDFURNACE

NOTE - Do not wire “Y” wire(s) from the

furnace terminal strip. Doing so causesthe motor to “search” for proper CFM.

DT2 (S89) Lim

it Control (O

ptional[67M

41], for defrost tempering kit)

ON G71MPP & SLP98Furnace - W2 Notrequired, but may be connected toincrease firing rate.

SEE IMPO

RTANT NOTE BELO

W!

NOTE: SELECT #OF HP STAGESBY PLACINGJUMPER INAPPROPRIATEPOSITION. (2-STGHP SHOWN)

CONNECT TO THESAME POWER

SUPPLY AS THEGAS FURNACE


Discharge Air Sensor (88K38)Included

Connections for remote vacation switch or Humiditrol zoningaccessory

Figure 32. Option 3 - Typical Lennox Heat Pump and Lennox Variable-Speed Gas Furnace (Dual Fuel) (Troubleshooting)

49

5.2. Dual Fuel System Start-Up Defrost Temperating Sensor Placement and Checkout

5.2.1. Start-Up the System (All Models)


2. Applypowertothezonepaneltransformerandtothefurnaceandobservethefollowing:allfourdiagnosticLEDswilllight;theneachindividualdiagnosticLEDwilllightinsequence;thenallfourdiagnosticLEDswilllightandextinguish.

3. Finally,thestatuslightwillbegintoflash,indicatingproperoperation.Performthegasheatingchecksusingtheinformationinthefollowingsections.

5.2.2. Defrost Temperating Sensor PlacementInstall the defrost temperating sensor (if used) where shown in the followingillustration. For additional information, see the installation instruction that camewiththeDefrostTemperatingKit(67M41).

plenum

coil

furnace

front

Typical UpflowFurnace Shown

Defrost temperating sensor / limit control(if used in Option 3)

Figure 33. Defrost Tempering Sensor Placement

50

5.2.3. Checkouts

5.2.3.1. Typical Dual Fuel Gas Heating (Single Zone)

Prerequisites:• Zone1thermostatsettoHeat.• BalancePointSensorsetathighertemperaturethanoutdoorBPS-sensedtemperature(redbalancepointsensorLEDon)or

• BalancePointSensorinputsjumperedtosimulatecoldoutdoortemperaturebelowbalancepoint(redbalancepointsensorLEDon).

.

OUTPUT STATUS LEDs

(W) RED ON

DAMPER 2,3,4 OFF

HEATING ONFAN ON

CENTRALMODE ON

W1 ON

1. Setzone1thermostatforaheatdemand;check:• Zone1thermostatWLEDon(heatingdemand).• DamperLED1off(damperopen).• DamperLEDs2,3,and4on(dampersclosed).• OutputHeatW1LEDon(furnaceon).• HeatingLEDon.Thefurnacebeginsignitionsequenceafterzone1hasdemandedheat.Thezonecontrolsystemwillstart the furnacebloweron lowspeed(0PIAB)45secondsafterthecombustioncyclehasbegun..


3. Setzone1thermostatforNOheatdemand;check:• Zone1thermostatWLEDoff(noheatdemand).• OutputHeatW1 LEDoff.• FanLEDoff.• HeatingLEDoff.• DamperLEDs2-4remainonuntilafter3-1/2minutepurge;thenoff.Tochecktheamountofairbeingdeliveredtoeachzoneandtoconfirmthateachindividualzonedamperfunctionsproperly,repeatthesestepsforzones2-4.

51

5.2.3.2. Typical Dual Fuel Gas Heating (Multiple Zone)

Prerequisites:Zone1thermostatsettoHeat.• BalancePointSensorsetathighertemperaturethanoutdoorBPS-sensedtemperature(redbalancepointsensorLEDon)or

• BalancePointSensorinputsjumperedtosimulatecoldoutdoortemperaturebelowbalancepoint(redbalancepointsensorLEDon).

.

OUTPUT STATUS LEDs

DAMPER 2,3,4 OFF

(W) RED ON

HEATING ONFAN ON

W1 ON

1. Setallzonethermostatsforaheatdemand;check:• Allzone1thermostatWLEDon(heatingdemand).• DamperLED1-4off(alldamperopen).• DamperLEDs2,3,and4on(dampersclosed).• OutputHeatW1LEDon(furnaceon).• HeatingLEDon.Thefurnacebeginsignitionsequenceafteraheatdemandisdetected.Thezonecontrolsystemwillstart the furnacebloweron lowspeed(0PIAB)45secondsafterthecombustioncyclehasbegun..


3. SetallzonethermostatsforNOheatdemand;check:• OutputHeatW1LEDoff.• HeatingLEDoff.• FanLEDoff(blowerturnsoffafterdelay).• AllzonethermostatWLEDsoff.• DamperLEDs-Lastzonethermostatdemandremoved:LEDisoff(thiszone’s

damperremainsopenduring3-1/2minutepurge);otherzonesdamperLEDsareonduring the3-1/2minutepurge (dampersclosed).After3-1/2minutedelay,alldampersLEDsgooff(dampersopen).

52

5.2.3.3. Typical Dual Fuel Gas Heating (Central Mode)

Prerequisites:• Centralmodeswitchon.• RedLEDonthecentralmodefanswitchon.• Zone1thermostatsettoHeat.

9 Balance Point Sensor set at higher temperature than outdoor BPS-sensedtemperature(redbalancepointsensorLEDon)or

9 Balance Point Sensor inputs jumpered to simulate cold outdoortemperaturebelowbalancepoint(redbalancepointsensorLEDon).

.

OUTPUT STATUS LEDs

DAMPER 2,3,4 OFF

(W) RED ON

HEATING ONFAN ON

W1 ON

1. Setzone1thermostatforaheatdemand;check:• Zone1thermostat WLEDon(heatingdemand).• OutputHeatW1 LEDon(furnaceon).• HeatingLEDon.• AlldamperLEDsoff(damperopen).

2. ThefurnacewillbeginitsignitionsequenceafterZone1hasdemandedheat.Thezonecontrolsystemwillstart the furnacebloweron lowspeed (0PIABair)45secondsafterthecombustioncyclehasbegun.

3. When100ºFwarmairissensedbythedischargeairsensor,thefanLEDwilllightandtheblowerwillslowlyincreasetospeed.Theblowerwilloperateataspeedequivalent to thePIAB calculated for all zones calling, taking into account theheatingairreductionjumperposition.Itmaytaketheblower60to90secondstoreachthisspeed.

4. Removetheheatdemandfromzone1(noheat inputoroutputandnoblowerdemand).Uponremovalofthedemandfromzone1,check:• Zone1thermostatWLEDoff(noheatdemand).• OutputHeatW1LEDoff.• FanLEDoff.• HeatingLEDoff.After3-1/2minutepurgetime,furnaceblowerturnsoff.

53

5.3. Zoning System with Dual Fuel Troubleshooting - Option 3

5.3.1. Troubleshooting Diagram


Are thermostats wired correctly?Does zone control system respond appropriately to demand?

tion relays may need to be used.24VAC supplied to each thermostat terminal R from zone control system?Check each thermostat for output signal when calling. Heating output W1? Cooling output Y1?

Error code present?

shooting/diagnosticsection of thismanual.

ing?

Does outdoor unit respond to demand?Is it operating properly?Test Defrost. Does outdoor unit initiate and terminate defrost correctly?Check defrost tempering switch, if installed.Does zone control system respond appropriately during defrost?Are appropriate outputs energized in response to demand?Does zone control system energize appropriate outputs? During Cooling? DuringHeating? During Defrost? During Emer. Heating?24VAC from furnace transformer to R?Does indoor unit respond to outputs? Cooling? Heating? Defrost? Emer. Heating?Does blower speed change as zone demand changes? If no, does DS output varyfrom 0 to 25VDC?


Pressure Switch installed. in correct position?Does switch open when high pressure condition is simulated (temporarilyblocking airflow in heating mode)?

tion is simulated (temporarily disconnecting switch simulates high pressure).Balance Point Sensor Installed and correctly wired?Contacts close on temperature fall?

DAMPERS

Heating

Cooling

120VAC

24VAC

THERMOSTATS

rectly?Only 1 jumper per Zone?

er Settings NOTE:Zone 1 may have a secondjumper on 140F DAS pins)Has 140F DAS jumper beeninstalled

Are continuous & heating air

ly? On heat pumps, HeatingAir Reduction must be 0%.

ate speed reduction? If no,

placing zone control panel.

Have heating and coolingstaging jumpers been set

eration?

PRESSURESWITCH

Y R B

BALANCEPOINT

SENSOR

RCY1Y2OW1

R GW1W2CDSY1Y2

HEAT PUMP

VARIABLESPEED

FURNACE

DT2 (S89)

tional, fordefrosttemperingkit)


rectly?

DISCHARGEAIR SENSOR



Fuses OK?

TO FU

RN

ACE

POW

ER SU

PPLY

Verify Furnace jumpers/links cut or removed(see Pages 29 - 25)Verify NO connectionsmade to Y1 or Y2.

Airreduction

jumpersettings -

page 9.


Figure 34. Option 3 - Typical Lennox Heat Pump and Lennox Variable-Speed Gas Furnace (Dual Fuel) (Troubleshooting

54

5.3.2. Dual Fuel Operation (Below Balance Point)

REFER TO DISCHARGE AIRUPPER LIMIT DIAGRAM(Page 51) FOR UPPER LIMITAND DIFFERENTIAL DETAILS.

Energize W1@ furnace; Rampindoor blower tominimum CFM

setting


setting?

Ramp indoorblower to

heating stagingjumper setting



?



?

No

Yes

No

Yes

Yes


130°F?

Yes

No

No

No

Yes

No

Yes

HEATINGDEMAND

RECEIVED

3-Minutessince completion


?Yes

Ambienttemp. Below

Balance PointSensor setpoint

?

Yes

No

No

See Above BalancePoint Sensor

setpoint flow diagram

BLOWERSHUTDOWN

Yes

No

Yes

No

Yes

No

De-energizeW2

charge airtemperature


charge airtemperature

De-energizeW1 @ furnace

Hold dampersopen for 3½

minutes

Dischargeair (DAS) above

100°F?

No

Yes Yes

No

Isdischarge

air at upperlimit

?

De-energizeW1 & W2@ furnace

Isdischarge

air at upperlimit

?



?


?


?


?

Yes

5 mindelay

complete?

No


calling zones

5.3.3. Discharge Air Upper Limit and Differential Temperatures

Discharge air upper limit is160ºF unless 140ºF DASjumper installed

To / from the appropriate

gas heating ordual fueldiagram

Furnaceenergized

No

Yes

No

Yes

No


Isdischarge

air at upperlimit

?

3-minute

pleted?

Yes

Differential is 20ºF aboveheating staging jumpersetting with the followingexception:Differential is 15ºF if the 140ºF DAS jumper is in place on PIAB 1 terminalsander is on 120 or 130.



?

55

5.3.4. Dual Fuel Operation (Above Balance Point)


(see NOTE)

No

De-energizeall heat pumpand furnace

stages


130°F?

Yes

Yes

No

Yes

BLOWERSHUTDOWN


?

Yes

Yes

No

No

Yes

No

Energize 1st &/or 2nd stage

ing jumper setting


setting?


completed?

No

No

No

Yes

pressor stages; start5-minute delay

Shutdown allcompressor

stagesYes

NOTE - On energize W1 furnace,compressor heat is locked out - allheat calls for the next three hoursuse gas heat only

Yes

HEATINGDEMAND

RECEIVED

5-min

completion of lastheatingdemand

?Yes

Ambienttemp. Above

Balance Pointsensor setpoint

?

Yes

No

No

See Below Balance Pointsensor setpoint flow diagram


Shutdown allheating stages


calling zones

Yes

No

No

Heat pumplocked out

(see NOTE)

YesNo


5 min delaycomplete

?

Yes No

Systemin 3-hr backup

heat mode?

Yes

No

Dischargeair DAS above

135°F?


completed?

Isdischarge

air at upperlimit

?



?


?

Yes

5 mindelay

complete?


?

No

5.3.5. Defrost Operation

Defrostcontrol detectsneed for defrost

cycle?

Yes

No

Yes

Harmony IIIcontrol energizesall compressor

stages

Heat Pumpenters defrost

Defrostcompleted

? No

Yes

Harmony III controlde-energizes all

compressor stages - usesauxiliary heat to complete

existing heat demand

Defrostperiod exceeds

20 minutes?

No

De-energizeall compressor

stages

Yes

No

NORMALHEAT PUMPOPERATION


?

Dual Fuel? Yes

No

Harmony IIIsends signal to

W1 at indoor unit

DefrostTempering

? Yes

No

HP cycles W1 OFF at90ºF and ON at 80ºFduring defrost cycle.

56

5.3.6. Installation Setup Worksheets

5.3.6.1. Dual Fuel - Indoor Unit Honeywell 2-Stage IFC Control and Heat Pump

JobName:

IndoorUnitModel:

OutdoorUnitModel:

Miscellaneous Items: 9 InstallPressureSwitchintheoutdoorunitperthisinstructions(27W13forR410Aor21J18forR22)

9 InstallBalancePointSensor(10Z23)asperthisinstallationinstruction.SettodesiredoutdoorlockouttemperatureforHP

9 InstallOptionalDefrostTemperingSensor67M41(ifused)perinstallationinstructions.NOTE:MUSTbelocatedincoildeltaplatebetweenfurnaceandcoil

9 InstallDischargeAirSensorperinstallationinstructions.ThelocationofthesensorisCRITICALforpropersystemoperation

Indoor Unit Setup: 9 Cuton-boardlinkW914DEHUMORHARMONY(RtoDS)onfurnaceIFCcontrol(ifnotcut,fusewillblowinzonecontrolboard)

9 Cutandtapewiresfrompin#2andpin#13onplugJ46oftheVSMwiringharnessroutedfromthemotortotheFurnaceIntegratedcontrol.

9 FurnaceIFCControlDIPswitchsettings(ONorOFF):


1 OFF DIPswitch1mustbesettoOFFfortwostageheatingoperation

2 OFF DIPswitch2determinessecondstageheattimedelayandisignoredbyHarmonyIIIzoningsystem

3 ON DIPswitches3and4determinesheatingbloweroffdelay,recommendedis180sec4 ON

5 DIPswitches5and6determinessecondstagecoolingblowerspeedormaximumsystemairvol.6

7 DIPswitches7and8determineblower“adjust”settingformaximumsystemairvolume8

9 OFF DIPswitches9and10determinescoolingblowerrampingprofileandisignoredbyHarmonyIIIzoningsystem10 OFF

11 OFF DIPswitches11and12determinesheatingblowerspeedandisignoredbyHarmonyIIIzoningsystem12 ON

Panel Setup:√Heatingstagingjumper Circleone:8590100


√Zone1PIAB140FDASjumperinplace


√Coolingstagingjumper Circleone:505560 Selectdesireddischargeairtempduringcooling

√Cont.AirReductionjumper Circleone:0255075

Percentageairflowreductionforcontinuousfanoperation

√HeatingAirReductionjumper Circleone:02040 Percentageairflowreductionforheatingmode

√SystemConfigurationjumpers


√Stages Circleone:2COOL1COOL


√Stages Circleone:2HP1HP Ignoredforgasheat,non-heatpumpapplication

√E-HEATStages Circleone:DF123 Ignoredforgasheat,non-heatpumpapplication

√DesiredtotalsystemCFMwithallzonescalling:


MinimumCFM:





NOTE: All of the above are recommended starting positions for furnace DIP switches and Harmony III jumpers. Slight variations may be required during system start up and operation checks.



DSonHarmonyIIItoDSonindoorunitconnectedConindoorunitconnectedtoHarmonyIIItransformerCNoconnectiontoY1orY2onindoorunit.




√ HeatPumpPressureSwitchwiredtoHarmonyIIIzoningsystem

57

5.3.6.2. Dual Fuel - SLP98 Variable Capacity and Heat Pump

JobName:

IndoorUnitModel:

OutdoorUnitModel:

Miscellaneous Items: 9 InstallPressureSwitchintheoutdoorunitperthisinstructions(27W13forR410Aor21J18forR22)

9 InstallBalancePointSensor(10Z23)asillustratedinthekitinstallationinstruction.SettodesiredoutdoorlockouttemperatureforHP



Indoor Unit Setup: 9 Cuton-boardlinkW914DEHUMORHARMONY(R to DS)onfurnaceIFCcontrol(ifnotcut,fusewillblowinHarmonyIIIzoningsystemcontrolboard)

9 W2connectionfromHarmonyIIItoSLP98isoptional. 9 DIPswitchsettings(ONorOFF):





4 ON DIPswitches4and5determineheatingblower“off”delay–recommended180seconds5 ON


8 DIPswitches8and9–coolingblowerspeed–determinesmaximumsystemCFM–seefurnaceblowertables9

10 DIPswitches10and11–coolingbloweradjust–determinesmaximumsystemCFM–seefurnaceblowertables11


14 OFFDIPswitches14,15,and16–setslowfire,minimumcapacity,firingrate-defaultsettingshownandisrecommendedstartingpoint.15 OFF

16 OFF

17 OFFDIPswitches17,18and19–setshighfire,100%capacity,firingrate-defaultsettingshownandisrecommendedstartingpoint18 OFF

19 OFF

















MinimumCFM:





NOTE: All of the above are recommended “starting” positions for the furnace DIP switches and Harmony III jumpers. Slight variations may be required during system start up and operation checks.







√ HeatPumpPressureSwitchwiredtoHarmonyIIIzoningsystem

58

5.3.6.3. Dual Fuel - Variable Speed SL280V, EL296V, SL297NV and Heat Pump

JobName:

IndoorUnitModel:

OutdoorUnitModel:

Miscellaneous Items: 9 InstallPressureSwitchintheoutdoorunitperHarmonyIIIinstallationinstructions(27W13forR410Aor27W12forR22)

9 InstallBalancePointSensor(10Z23)asperinstallationinstructions.SettodesiredoutdoorlockouttemperatureforHP



Indoor Unit Setup:√Cuton-boardlinkW914DEHUMORHARMONY(R to DS)onfurnaceIFCcontrol(ifnotcut,fusewillblowinHarmonyIIIzonecontrolboard)√DIPswitchsettings(ONorOFF):

DIP Switch

ON or OFF Condition

1 OFF DIPswitch1–leaveatfactorysetting–ignoredbyHarmonyIII

2 OFF DIPswitch2–leaveatfactorysetting–ignoredbyHarmonyIII

3 ON DIPswitches3and4–Bloweroffdelayswitchsettings,setDIPswitches3and4toON(180seconds)

4 ON DIPswitches4and5–Determinesheatingblower“off”delay–recommended180seconds

5 OFF DIPswitches5and6–Coolingbodeblowerspeed,setDIPswitches5and6toOFF(High-Factory)6 OFF

7 OFF DIPSwitches7and8–Coolingblowerspeedadjustment,setDIPswitches7and8toOFF(FactoryDefault)8 OFF

9 OFF DIPSwitches9and10–CoolingmodeblowerSpeedramping,setDIPswitches9and10toOFF(A-Factory)10 OFF

11 OFFDIPSwitches11,12and13–Heatingmodeblowerspeed,setDIPswitches11,12and13toOFF(FactoryDefault)12 OFF

13 OFF

14 OFF DIPSwitches14and15–Continuousblowerspeed,setDIPswitches14and15toOFF(38%ofHighCoolSpeed-FactoryDefault)15 OFF




Circleone:YesNo SeeHarmonyIIIinstallinstructionsforinfo
















NOTE: All of the above are recommended “starting” positions for the furnace DIP switches and Harmony III jumpers. Slight variations may be required during system start up and operation checks.







59

6. trOublesHOOtinG

6.1. Operation and Troubleshooting Indicators

6.1.1. Zone Control Panel LEDsThe zone control systemoperation is indicated by light emitting diodes (LEDs)located on the zone control panel. In addition to operating condition, the LEDsprovidevaluableinformationsystemtroubleshooting.TheLEDs(showninfigure30)arethermostat,diagnostic,andoutputstatus.

1. Thermostat LEDs —Locatedalongtheupperedgeofthezonecontrolpanel.Each zone has three LEDs to indicate a call for heating or cooling: green(indicatesaY /compressordemand),red(indicatesaW /heatingdemand)andamber(indicatesaG/indoorblowerdemand).TheseLEDsarelabeledaccordingtothezoneanddemand.

2. Diagnostic LEDs—Diags1,2,3,4—locatednearthebottomcenterofthethe zone control panel. These LEDs aid the technician in troubleshootingproblems.Whenanerrorisdetected,LEDsilluminateinapattern.SeeFaultRecallandTimeDelayOverrideonpage58.

3. Output LEDs— Located along the bottom of the zone control panel andnear connection terminals. These red LEDs indicate the output status ofdampers,furnace,outdoorunit,etc.Whenanoutputispoweredoractive,thecorrespondingLEDisilluminated.

4. Pressure Switch LED—Locatedatthetopleftcorner.GreenLEDilluminateswhentheheatpumppressureswitchisclosedindicatednormalpressures.TheLEDwillbeoffwhenthepressureswitchopensunderabnormalorexcessivecondensingpressureintheheatpumpheatingmode.Pressureswitchisusedonlyonheatpumpsystems.

5. Balance Point Sensor LED — Located at the top left corner. Red LEDilluminates when the balance point sensor is closed indicating outdoortemperatureisbelowthebalancepointsensorsetting.Onlyusedondualfuelheatpumpsystems.

TheLEDsarelabeledaccordingtooutputandfunction.Forexample,ifDamper1LED is illuminated, it’s damperhasbeensignaled to close;when theLED isextinguished,it’sdamperhasbeensignaledtoopen,allowingairflowtothatzone.

THERMOSTATLEDs

OUTPUT STATUS LEDs

DIAGNOSTICLEDsTIME DELAY

OVERRIDE

FAULTRECALL

EQUIPMENTOUTPUT LEDs

OUTDOOR THERMOSTAT /BALANCE POINT LED

PRESSURESWITCH LED

Figure 35. System Indicators/Troubleshooting Devices

60

6.1.2. Fault Recall and Time Delay Override

WhentheTimeDelayOverrideispressedandheld,theinternalclockspeedsupbyafactorof60.Thisoverridesthecurrenttimedelayandpermitsthenexteventtooccur.“Table14.TimeDelays”onpage60identifiesthetimedelaysusedbythesystem.

WhentheFaultRecallbuttonispressedandreleased(clicked),thefaultcodesaredisplayed(10mostrecent).Whenthefaultrecallbuttonispressedandheld,thefaultcodesareerased.Eachcodewillbedisplayedfor10secondsstartingwiththemostrecentcode,thenthenextmostrecent,andsoon.Pressingthebuttonwhilerecallingfaultcodeswillbypassthe10-secondtimerandgorighttothenextfaultcode.

Use theFaultRecallbutton toobservediagnosticcodes thatwill indicateeithercorrectoperation,orhelpcheckoutandtroubleshootproblemsinthezonecontrolsystem.“Table15.DiagnosticsCodes”onpage62identifiesalldiagnosticcodes.

Pressthebuttononcewhilethesystemisoperating.ThesystemwillrespondbymomentarilylightingallfourDIAGLEDsthendisplayingtheerrorcode,ifanerrorcodeisstoredinmemory.ThisallowsavisualchecktoverifythatallfourLEDsareoperationalbeforedisplayinganerrorcode.

6.1.3. Time Delays

Timers used in theHarmony III zoning systemdefine delayswhich precede orfollowademand,dependingonthetypeoffunction.Thedelaysareusedtocontrolequipment connected to the system. The following table shows how the mostnoticeabledelaysareused.

Table 14. Time DelaysDelay Time FunctionBlowerOffDelay(gasheatonly) 3-1/2min. GasFurnaceonly.Deliversairintolastzone

calledduringcooldownfollowingheatdemand.

CompressorSpeedChange 4min.Betweenlowspeedandhighspeedinordertomakesuresteadystateisreachedbeforestaging.

CompressorOffTime 5min. Atendofdemand.Equalizespressureinrefrigerantsystemandpreventsshortcycling.

HeatStaging(electric) 2min. Betweenstagingupordown(Maystagefastertopreventovershoot/undershoot).

HeatStaging(gas) 3min. Betweenstagingupordowntoachievesteadystate.

DualFuelFurnaceLock-inTimer 3hrs.

Startswhensystementersdualfuelfurnaceheatingwhentheoutdoortemperatureisabovebalancepoint.Whenoperatingwithinthis3-hourtime,onlythefurnaceisusedforheating.Heatpumpwillbetriedagainonthenextcallafterthistimerexpires.DiagnosticLEDs2,3,and4willflashwhenthistimerisactive.

Table 14. Time DelaysDelay Time Function

DamperHold 3-1/2min.

Thistimerisdefinedastheamountoftimetoholdthelastzonecallingopenpastthethermostatcalldropout.Duringthistime,thepanelwillnotenergizetheblower(exceptwhenacontinuousfancallexists);thecontrolledequipmentwillprovidethissignal.Thisisanon-adjustabletimersetat210seconds.

Auto-changeover 20min.

Whenopposingdemandsarepresent,zonecontrolsystemmustworktosatisfycurrentdemandatleast20min.Ifcurrentdemandisnotsatisfiedaftertimehaselapsed,systemwillchangeoverandsatisfyopposingdemand.OnandOffdelaysabovewillalsoapply.

DualFuelAuto-changeover 20min.Whentemperatureisabovebalancepoint,heatpumpwilloperatefor20minutesbeforeallowinggasfurnacetotakeoverheatingdemand.

6.1.4. Discharge Air Probe Checkout (All Systems)

The discharge air sensor is a temperature-dependent resistor; the higher thetemperature, the lower the resistance. To confirm the sensor is functioning,disconnectbothsensorleadsfromthezonecontrolpanel.Usingadigitalvoltmeter(DVM)settoreadresistance,touchtheleadsfromthesensortotheprobesoftheDVM.

Temp ºF (ºC)

Resistance (ohms)

65(18) 13476

70(21) 11884

75(24) 10501

80(27) 9298

85(29) 8249

90(32) 7333

61

Donottouchbothprobeswithyourfingers—doingsowillproduceafaultyreading.At77°F,theresistanceofthesensorwillbe10Kohm;atlowerprobetemperatures,expecthigherresistance;atwarmerprobetemperatures,expectlowerresistance.

Afterreadingtheresistanceatroomtemperature,warmthetipofthesensorbyholding it in the palm of your hand, and take another resistance reading. Theresistanceshouldbenoticeablylowerthanthepreviousreading.

Thezonecontrol systemwillmonitor theoperationof theprobeanddetermineif a failure has occurred.The probe is an integral (but replaceable) part of thezonecontrolsystem.Thezonecontrolsystemwillindicateiftheprobeisoperatingimproperlyandneedstobereplaced.Thedischargeairtemperatureprobeservesseveralpurposes:

1. Incoolingsystems(andheatpumpsystemsincoolingmode)theprobevariesthe speedof the compressor fromhigh to low to off in order tomaintain aconstantdischargeairtemperatureandpreventcoilfreezing.

2. Ingasheatingsystems,itisresponsibleforincreasingthespeedoftheblowerto thesettingof theCFMjumpersafter thedischargeairhaswarmeduptoabout 100ºF.Also stages equipment up and down to control discharge airtemperature.

3. In heat pump systems operating in the heating mode, the probe variescompressorspeedandstagesofauxiliaryheatinordertomaintainaconstantdischargeairtemperature.

6.1.5. Blower Speed Checkout

Theindoorblowerspeedshouldvaryaszonedemandchanges.ThefanspeedLEDvariesinbrightnessastheblowervariesinspeed.ThebrightertheLED,themoreCFMbeing delivered. Blower speed can also be viewed by attaching anelectronicvoltmeterbetweenDSandanyC terminalon thezonecontrolpanel.While not a precise measurement, the voltmeter fluctuation indicates that theblowerspeedischanging.

1. Connect electronic voltmeter betweenDS and anyC terminal on the zonecontrolpanel.Leaveallfieldwiringinplace.

2. SelectDCvoltsscale.

3. Startzoneheatingorcoolingcheckoutprocedure.

4. Observevoltages:• 22voltsDC=highspeed(variesdependingoninputvoltageatprimary

transformer).• 11voltsDC(approx.)=Mediumspeed50%intoadjustmentbandofblower.• 0voltsDC=lowspeedoroff.

NOTE: All speeds in between are a percentage of 22VDC.

5. AlsomeasurevoltageattheindoorunitbetweenDSandC.IfthevoltageislowerthanthevoltagemeasuredattheHarmonyzonepaneland/ortheblower

runsataminimumfanspeed,checkandmakesureContheindoorunit isconnectedtoConthezonepaneltransformerconnection.

NOTE: SLP98 furnace models are equipped with an LED on the integrated control which displays blower airflow in all modes of operation. See SLP98 installation instructions for additional information.

NOTE: CBA38MV, CBX40UHV and CBX32MV Rev 06 or higher have an LED display that will indicate the unit air volume. “A” followed by the number indicates the CFM. For example, “A-2-0-0-5” indicates 2005 CFM.

NOTE: If blower operates only at the minimum CFM or will not ramp to zone air volume, check and make sure terminal C on the indoor unit terminal strip is connected to Harmony 24 VAC terminal C (see figures 17 through 27).

NOTE: If blower “hunts”, check and make sure there is no connections on Y1 or Y2 on the indoor unit terminals strip.

NOTE: Units without a 7-Segment LED will have a “CFM” LED to indicate blower airflow. One blink of the LED is equal to approximately 100 CFM; then it pauses and repeats. For example if the CFM indicator LED blinks 10 times this indicates approximately 1000 CFM.

NOTE: Make sure DS on the Harmony board is connected to DS on the furnace/air handler terminal strip.

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6.2. Diagnostic LED Error CodesWhen the zone control system finds a problem (error condition), it will turn ononeormoreofthediagnosticLEDsonthezonecontrol.TheseLEDscanbelitinseveraldifferentpatterns,eachpatterncorrespondingtoadifferenterrorcondition.Thefollowingtableshowseachpossibledisplaypattern,adescriptionoftheerror,andwaystocorrecttheerror.

Someoftheerrorsfoundintablewillcauseafail-safeorshutdowncondition.Thesystemwillshutdownafter theerror ispresent foraboutfiveseconds.Duringashutdowncondition,alldamperswillopen,thereisnodemandtotheairconditionerunitorfurnace.Normaloperationwillresumefivesecondsaftertheerrorhasbeencorrected.

Theblowermayrunduringafail-safeconditionafteraheatingdemand.Thisisduetotheoperationoftheintegratedcontrolinsidethefurnace.

Ifashutdownconditionoccurswhilethereisacallforcooling,afive-minutetimerisinitiatedbeforecoolingcanbecalledforagain.Thetimerbeginsatthetimeoftheshutdownconditionanddoesnotaffecttheresponseto,norisaffectedby,aheatingdemand.

Troubleshootingdiagramsinthisinstructionidentifycommonareastocheckwhentroubleshootingspecificequipment.Thediagramsprovidecheckpointsrelatedtoconnectivityandoperationofsystemequipment.Usethesediagrams,alongwithinstallation informationcontained throughout thismanual, to identifyandcorrectproblems.

Table 15. Diagnostics Codes

Code #

(0-off;1-on) Diag

LED1234Fault Indicated Remedy

Fail-safe (System

Shut Down)

0 0000 Normaloperation Noremedialactionrequired.

1 1000 Insufficientcooling

OccurswhenthereisacallforcoolingandtheDischargeAirSensordoesnotsenseadecreaseinsupplyairtemperatureindicatingthecoolingisnotfunctioningproperly. No

2 0100 Defrosttime>20minutes

Thedefrostboardshouldneverallowadefrostforgreaterthan20minutes.Ifthiserroroccurs,checktheoutdoorunittoseeifitisstuckindefrostmode.Thezonecontrolsystemwillusethebackupheatduringthiserrorandnottheheatpump. No

3 1100 Unsteadythermostatinput

Thiserroroccurswhenathermostatchangesstaterepeatedlyandrapidly,indicatingthatthethermostatismakingintermittentcontactandneedsattention.Theoffendingthermostatwillbeignoredforfourminutesafterthezonecontrolsystemdetectstheproblem.Afterfourminutesifthesignalfromthethermostatissteadyagain,itwillberecognizedbythezonecontrolsystem.Disconnectthermostatsuntilerrorgoesaway.Thiswillidentifythesourceofbadinput.Iferrorremainsafterallinputshavebeendisconnected,replacezonecontrolpanel.

No

4 0010 Defrostwhilegasheatselected

SystemdetecteddefrostsignalatW1-Defterminalblockwhilethejumperisselectedforthefurnace.Maybecausedby:

• Wrongselectionforindoorunitjumper.• Outdoorunitterminalblockmisfired.• Zonecontrolsystemfailure.

Checkunitinstallationinstructionsforcorrectwiring.IfnosignalispresentatW1,thenreplacezonecontrolpanel.

Yes

5 1010

DischargeAirSensor

(DAS)detectshighheatingtemperature

Thisconditionmayoccuranytimethedischargeprobesensesairwarmerthan160ºFforfurnaceor135ºFforheatpump.Ifsystemisinzonemodewhenthiscodeisset,thesystemcontinuesinzonemode,shutsoffequipment,andrunscontinuousblowertosatisfydemand.TheheatpumporfurnacewillremainoffforaminimumoffiveminutesanduntiltheDASsenses130ºF.

Addmoreairtozoneorredistributezonestodivideairmoreevenly.

No

6 0110 Zoneairjumpernotselected

Airselectedforfewerthantwozones.Noairisselectedforzone1or,3.Ifazoneairselectionjumperisleftoffofazonethatissuesaheatorcooldemand.InthiscasethesystemwillassumethataPIABof100isrequiredtoservicethezone.Makeazoneairjumperselection.Ifjumpersareinplace,replacethezonecontrolpanel.

No

7 1110 OpenorshortedDAS

Ifsystemisoperating,systemwillbeforcedintocentralmode.Thecompressorwillcyclefromhightooffincooling.Thecompressorwillcyclefromhightooffinheating.Thefurnacewilloperatenormallyingasheat.Replacedischargeprobe.Iferrorpersists,replacezonecontrolpanel. No

8 0001

Simultaneousheatandcoolcallfromsamethermostat

Inaddition,possibleinconsistentthermostatsignals.Verifythermostatsarecorrectlyconnectedtothezonecontrolpanel.Iferrorpersistsafteryoucheckthethermostatsandjumperselectionsortryanotherthermostatmodelorbrand.Demandwillbeignoredfromthezonesendingthebadsignals.See“Table14.TimeDelays”onpage60.

No

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Table 15. Diagnostics Codes

Code #

(0-off;1-on) Diag

LED1234Fault Indicated Remedy

Fail-safe (System

Shut Down)

9 1001

Openpressureswitch(heatpumpsystems

only)

Displayedwhenthepressureswitchopensanddoesnotnecessarilymeanthereisanythingwrong.However,tryincreasingtheairdeliveredtothesmallestzone.Anopenpressureswitchwillstagetheheatpumpdownto1ststageonly,ifafter90secondstheswitchdoesnotclose,theheatpumpisshutoffandbackupheatisusedtosatisfythecall.GreenPressureswitchLEDonzonepanelwillbeoff.

No

10 0101 Insufficientheating

OccurswhenthereisacallforheatingandtheDischargeAirSensordoesnotsenseaincreaseinsupplyairtemperatureindicatingtheheatingisnotfunctioningproperly. No

11 1101 DASsensedfrozencoil

Indicatesdischargeairtemperaturesensedbydischargeairsensordropsbelow45degreesduringthecoolingmode.Whensensed,theairconditionerunitwillstopandaslongasthecoolingdemandispresenttheIDblowerwillcontinuetorununtilthe5minutetimedofftimerexpiresandthedischargeairsensorsenses55ºF.

No

12 0011 Multiplejumperselection Eachjumperblockonzonecontrolpanelisallowedonlyonejumper,exceptforthesystemsetupblock.Removeextrajumper. No

13 0111 Dual-fuelfurnaceuselock-in

Heatpumpwasnotabletomaintaindesireddischargeairtemperature;furnacewillbeusedtosatisfyheatcallsforthenextthreehours.Afterthreehours,theheatpumpwillbeusedagain. No

6.3. Air Delivered By BlowerTheactualCFMdelivered toeachzonewillbedeterminedby thezonecontrolsystem settings, blowermotor control board settings, zone thermostat demandstatus(calling forheating,cooling,continuousfan,ornodemand[zonedamperclosed]),andtheairdistributionsystem’sductsize.

6.3.1. Formulas

Whenthezonecontrolsystemissetforaparticularzone,heatingreductionjumper,and/orcontinuousairreductionsettingsdeterminethetotalCFMavailablefromtheunitasfollows:

1. Determine Total Unit PIAB—Usingtheformulain“Table16.DeterminetotalPIABandTotalCFMDelivered” calculate theTotalPercent intoAdjustmentBand.Thisillustratesthepercentageintotheadjustmentbandthatthemotorrunswhenmorethanonezoneiscallingforconditioning.

2. Determine Total CFM Delivered—Continuing from thepreviousexampleandassumptions,andusingtheformulainTable11,calculatethetotalCFMdelivered.ThemaximumandminimumCFMvaluesusedintheformulashouldcorrespond to the jumper settings on the blower control board. This valuerepresentsthevolumeofairreceivedifallzoneswerecallingforcooling.

3. Determine heating PIAB and Total Heating air CFM Delivered during a Heating Call —Calculate these totalsusing the formulasandexamples in“Table17.DetermineTotalHeatingCFMdelivered”.

4. Check”CFM”LEDor7-SegmentLEDonindoorunittoobtainapproximatelyCFMtheindoorunitisoperatingat.

5. Determine Total Air Delivered during a Continuous Blower Call—Calculatethese totalsusing the formulasandexamples in “Table18.DetermineTotalContinuousCFMdelivered”.

IMPORTANTIf any blower speed settings (furnace or air handler) are changed, the zonecontrolPIABcalculationsmustbeperformedagaintoensureproperairflow.

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Table 16. Determine total PIAB and Total CFM DeliveredJumpers CFM

Zn1 Zn2 Zn3 Zn4 Cont. Air Reduction

Heating Air Red. Min. Max.

30% 10% 20% OFF 25% 20% 720 2200

Grayzonesarecalling.

TotalPIABFormula

(#ofzonescalling-1)3(Sumofcallingzones1to4jumperpositions)+

1. Usingexamplevaluesabove,findTotalPIAB:• Jumperpositions.10+.20.30(#ofCallingzonesminus1)dividedby3(2-1)/3+.33Total(motorruns63%intoadjustmentbandofmotor).63

• TotalCFMFormula• TotalPIABx(CFMmax.-CFMmin.)+(min.CFM)

2. ThenfindTotalCFM:• TotalPIABfromstep1.63CFMmax.-CFMmin.(2220-720)x1500

• CFMintoadjustmentband945

• TotalCFM(CFMmin+CFMintoadjustmentband)1665

Table 17. Determine Total Heating CFM deliveredExamplevalues

Jumpers CFM



30% 50% 40% OFF 25% 20% 720 2200

• Grayzonesarecalling.

• TotalPIABFormula

• (#ofzonescalling-1)3(Sumofcallingzones1to4jumperpositions)+

1. Usingexamplevaluesabove,findTotalPIAB:• Jumperpositions.30+.40.70(Callingzonesminus1)dividedby3(2-1)/3+.33Total(usesum

or1.00,whicheverisless)1.03*1.00*Blowercannotsupport103%;uses100%• HeatingPIABFormula• TotalPIABx(1-Heatingairreductionsetting)

2. ThenfindHeatingPIAB:• TotalPIABfromstep11.00(1-Heatingairreductionsetting)(1.00-.20)x.80TotalHeatingPIAB

.80• TotalHeatingCFMFormula• HeatingPIABx(CFMMax.-Min.)+(Min.CFM)

3. ThenfindTotalHeatingCFM:• HeatingPIABfromstep2.80CFMmax.-CFMmin.(2220-720)x1500• Subtotal1200MinCFM+720TotalHeatingCFM1920

Table 18. Determine Total Continuous CFM deliveredExamplevalues

Jumpers CFM



30% 50% 40% OFF 25% 20% 720 2200

• Grayzonesarecalling.

• TotalPIABFormula

• (#ofzonescalling-1)3(Sumofcallingzones1to4jumperpositions)+

1. Usingexamplevaluesabove,findTotalPIAB:• Jumperpositions(.30+.50+.40)1.20(Callingzonesminus1)dividedby3(3-1)/3+.66Total

(usesumor1.00,whicheverisless)1.86*1.00*Blowercannotsupport186%;uses100%• ContinuousAirPIABFormula• TotalPIABx(1-continuousairreductionsetting)

2. ThenfindContinuousAirPIAB:TotalPIABfromstep1.1x(1-Continuousairreductionsetting)(1.00-.25)x.75TotalContinuousAirPIAB.75

• TotalContinuousCFMFormula• ContinuousairPIABx(CFMmax.-CFMmin.)+(min.CFM)

3. ThenfindTotalContinuousAirCFM:• ContinuousAirPIABfromstep2..75CFMmax.-CFMmin.(2220-720)x1500• Subtotal1125MinCFM+720TotalContinuousAirCFM1845

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6.3.2. PIAB Calculation Worksheet

PIAB Calculation WorksheetPIAB = [(Required CFM - Minimum CFM) / (Maximum CFM - Minimum CFM)] * 100Sample CFM Required Minimum Maximum MinimumSample PIAB = ([___920 - 450 ] / [ 2000 - 450 ]) x 100

==

Sample PIAB = ([ 470 ] / [ 1550 ]) x 100=

Sample PIAB = [ 0.303 ] x 100 = 30 %Zone 1 CFM Required Minimum Maximum MinimumZONE 1 PIAB = ([ - ] / [ - ]) x 100

==

001 x )][ / ][(= BAIP 1 ENOZ=

% = 001 x ][= BAIP 1 ENOZ

Zone 2 CFM Required Minimum Maximum MinimumZONE 2 PIAB = ([ - ] / [ - ]) x 100

==

001 x)][ / ][(= BAIP 2 ENOZ=

% = 001 x ][= BAIP 2 ENOZ


==

001 x )][ / ][(= BAIP 3 ENOZ=

% = 001 x ][= BAIP 3 ENOZ


==

001 x )][ / ][(= BAIP 4 ENOZ=

% = 001 x)(= BAIP 4 ENOZ

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7. user Guide

7.1. What is the Harmony III™ zoning system? LennoxHarmony III zoning systemmanages the distribution of conditioned airtoasmanyas fourspecificareasorzones in thehome.TheHarmony III isanadvancedcontrolsystemthatallowsahometobezonedforheatingandcoolingwithouttheextraexpenseofpurchasingtwoormoreHVAC(Heating,Ventilation,andAirConditioning)systems.Thiscontrolallowstheownertoheatorcooloccupiedareas,withoutconditioningunusedareas.ThesystemadaptstheHVACcomponentstoprovideabalancedandcomfortableenvironment.

7.2. What does the Harmony III™ zoning system consist of?

Theprinciplesystemcomponentisthecontrolcenterwhichactsasthe“brains”oftheHarmonyIIIzoningsystem.Itcoordinatesalloftheoperationsofthermostats,motorizeddampers,andHVACequipment.Harmony III zoning systemuses off-the-shelf 1-heat/1-cool, non-power-robbing,non-heat pump electronic thermostats andmotorized dampers with one of thefollowingLennoxHVACsystemstodistributeconditionedairtozones:• Option 1.GasFurnacewithVariableSpeedBlowerMotor(VSM)andeitherasingle-ortwo-speedairconditionerunit.

• Option 2.BlowercoilunitwithVariableSpeedBlowerMotorandeitherasingle-ortwo-speedheatpump.

• Option 3.GasfurnacewithVariableSpeedBlowerMotorandheatpump.• Option 4.AddingHumiditrol®Interfacetoanyoftheaboveoptions.

7.3. How do I set the Control Center Switches?TheHarmonyIIIcontrolcenterhasonlytwoON/OFFswitches(seeillustration).For themost part, the system relies on thermostats to provide control of thedesired comfort level for each zone. The control center also has LEDs (lightemittingdiodes)whichlighttoindicatethecurrentoperatingmodeandwhichzonedampersareclosed.LatermodelsoftheHarmonyIII™controlcenterboardincludesconnectingpointsforaremotevacationswitchwhichmaybeinstalledneartheZone1thermostatforthehomeownersconvenience.

1. Vacation Switch. TheHarmony III control center operates in either of twomodes: centralmode (Vacation switchON) or zonemode (Vacation switchOFF).• Central Mode (VacationON)−all zones receive conditionedair at the

same time (like traditional, non−zoned HVAC systems). The masterthermostat(locatedinZone1)controlsanyheatingorcoolingneedforallzonesinthebuilding.

• Zone Mode(VacationOFF)−specificzonesareconditionedonlywhenthedemandcomesfromthatzone.Eachzone(notnecessarilyeachroom)hasitsownthermostat.Theindividualzonethermostatsonlyworkwhenthecontrolcenterisinzonemode.

IMPORTANTTheheatingandairconditioningequipmentincludessafetydevicesthatprotectyou and your property. If one ormore of these devices is activated, heatingoperationwill stop. If your home is left unattended for an extendedperiod oftime,equipmentoperationmustbecheckedperiodically.Ifthisisnotpossible,thewatersupplytothehouseshouldbeshutoffandthepipesshouldbedrained.ThiswillpreventproblemsassociatedwithaNOHEATcondition(frozenpipes,etc.)

7.4. How do I use the Thermostat Controls?Whether in centralmode (whereonly zone1 thermostat is functional) or in thezonemode (where all thermostats are functional), thermostats function as in atraditional,non−zoned,system.Thatis:• HEATsettingtells thecontrolcenter that itshouldprovideheat tothezone(s)whenitisneeded.

• COOLsettingtellsthecontrolcentertoprovidecoolairtothezone(s)whenthereisaneed.

• AUTOsettingallowseitherheatingorcoolingtooccur,dependingontheneed.Thisselectionisbestinspringorautumn,whenthetemperatureiscoolinthemorningbutstillwarmsintheafternoon.Byplacingthethermostats inAUTO,heatingwouldcomeoninthemorningandcoolingintheafternoon,ifneeded.

• FANAUTOorFANONtellsthecontrolcenterhowtheblowershouldoperate.Selectoneortheother.FANAUTOallowstheblowertoturnonandturnoffwiththeheatingorcoolingneeds.FANONtellstheblowertoruncontinuously.Zone-controlleddampersinthesystemmakeitpossibletohavesomezonescallforcontinuousfan(FANON)whileotherzonesaresettoFANAUTO.

7.5. How do I use the Central (Vacation) Mode?Whenyouchoosecentral(VacationON)mode,heatingandcoolingwillaffectallzones.

1. MovethevacationswitchonthezonecontroltoVACATIONON(or,ifused,movetheremotevacationswitchto“vacationon”).

2. ChooseeitherHEATorCOOLorAUTOonthemaster(zone1)thermostat.

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3. ChooseeitherFANAUTOorFANONonthemasterthermostat.

4. Setmasterthermostattodesiredroomtemperature.

7.6. How do I use the Zone Mode?Whenyouchoosezone(VacationOFF)mode,heatingandcoolingiscontrolledbyspecificzonethermostats.

1. MovetheVacationswitchonthecontrolcentertoOFF.

2. ChooseeitherHEATorCOOLorAUTOoneachthermostat(thermostatsneednotbesetalike).

3. ChooseeitherFANAUTOorFANONoneachthermostat(thesemaybesetdifferentlyineachzone).

4. Setthermostatstodesiredroomtemperature.

7.7. How are Zones Determined?YourLennoxdealerhassectionedtheroomsofyourhomeorbuildingintozonesusingthefollowingconsiderations:• Structural and Architectural Considerations - Inmulti-levelhousesusing

regularHVACsystems,heatedair rises to theupper floor(s) causing thoseroomsbecometoohot.Zoningwillremedythissituationbysplittingthecon-ditionedspaceintotwospecificzones(1stand2ndfloors).The2ndfloortem-peratureisnowcontrolledbyitsownthermostat,notthatofthe1stfloor.

• Climate Considerations-Exposurefromthesunandweathercanproducecoldandhotspotsinhomesthatareconditionedwiththeuseofonethermo-stat.Zoninglessensthisbygroupingroomswiththesameexposureintoonezone.Therefore,roomswithanorthernexposureandroomswithasouthernexposureshouldnotbezonedtogether.Inthewinter,northernroomsmaybetoocoolwhilesouthernroomsmaybetoohot.Inordertokeepabalanceofconditionedair, thezonemust contain roomswith thesameweatherexpo-sure.

• Occupancy Considerations-Asinglestructurecontainsdifferenttypesofliv-ingspaces.Withoutzoning,itisdifficulttoconditionallareassothateveryonewillbecomfortable.Zoningahomeorofficeallowstheownertocontrol thezoneswhichneedtobeconditioned.Roomsthatareusedoroccupiedatthesametimearezonedtogether.Bedroomswhicharegenerallyusedatnight,shouldnotzonedwithalivingroomthatisusedonlyduringthedayorevening.

7.8. How do I use the Optional Humiditrol® Dehumidification Accessory?

If your zoned system is equipped with an optional Humiditrol dehumidificationaccessory,seeinstructionsprovidedwiththeHumiditrolZoningAccessorymanualforsettingupzonecontrolandthermostatforoperation.

7.9. Enabling and Disabling Humiditrol Setting in Thermostat

YouinstallershouldhavealreadyenabledHumiditroloptionduringtheinstallationoftheequipment.Pleasecontactourinstallertoverifyinstallationiscompletedandconfiguredcorrectly.

7.10. Humiditrol User Adjustment is also available under the User Settings

PleaserefertoyourthermostatuserguideoninstructionsonhowtoadjustyourspecificthermostatforHumiditrolfunction.

7.11. Owner Reminder! Be sure the system installer has recorded the zoning information in “Table 19.HomeownersZoneInformationRecord”andhasidentifiedacontactpersonandphonenumberincaseofproblems.IfyouhavetheoptionalHumiditrol®EnhancedDehumidificationAccessory (EDA) alongwith theHumiditrol® ZoningAccessoryinstalled,askforacopyofthosekit’sinstallationandoperationinstructions.

7.12. Thermostat replacementIntheeventathermostatshouldfailandrequirereplacement,beawarethatnotall thermostatswillworkforallsystems.Certaintypesofthermostats,knownaspower-robbingthermostats,haveno“C”(common)wireconnectionterminal;thesecancauseunintendedsystemoperationandthereforemustnotbeused.CallyourLennoxdealertohelpyouidentifyandinstallanappropriatethermostatwitha“C”terminal.

7.13. MaintenanceOnceyourLennoxHarmonyIIIzoningsystemisproperlyinstalled,nomaintenanceisrequiredforthecontrolpanel’scomponents.Onlystandardheatingandcoolingequipment(HVAC)maintenanceisrequired.If you experience problems turning the system on to either heat or cool, theproblemmaysimplybeaprogrammed timedelay,which, inmostcases,wouldexpirewithin5to20minutes.Suchdelaysarenormalandarebuilt-intoassureproperequipmentoperation.

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7.14. Homeowners Zone Information RecordTable 19. Homeowners Zone Information Record

Zone Number Record which rooms are zoned together and controlled by thermostat number.

1

2

3

4

Lennox Dealer:

Contact:

Telephone Number:

Installation Date

HARMONY III™ zoning system (X9953) - Lennox International -

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