Air Handling Unit - Installation and Operating Instructions - IBC ...

INSTALLATION &OPERATING MANUAL

Air Handling appliances

AHU 800

AHU1200

AHU 1600

1

Contents

Safety information 5

Specifications 7

Heating capacity 8

Cabinet and air supply dimensions 9

Dimensions for the AHU 800model 9



Thermostat connections 14

1.0 Introduction 17

1.1 Standard features and benefits 17

1.2 Conformity 18

2.0 Installation 19

2.1 Locating the appliance 19

2.1.1 Conditioned space 19

2.1.2 Un-conditioned space 19

2.1.3 New construction 19

2.1.4Mobile home 19

2.1.5 Closet 20

2.1.6 Garage 20

2.1.7 Serviceability 21

2.2 Positioning andmounting the appliance 21

2.2.1 Return air openings for ducting 21

2.2.2 Positioning the air handling unit 22

2.2.3 Adding air conditioning coils or heat pump coils 22

2.2.4Mounting an appliance on the wall 23

2.2.5 Repositioning the air filter brackets 24

2.3 Duct work 26

2.3.1 Sizing the ducts 26

2.3.2 Ducting installed in conditioned space 27

2.3.3 Ducting installed in un-conditioned spaces 27

2.3.4Making the return air openings 27

2.4 Connecting the appliance to the boiler 28

2.4.1 Sizing pumps 28

2.4.2 Using PropyleneGlycol 30

2.5 Connecting the appliance to a tankless water heater 30

2.6 Electrical connections 32

2.6.1Wiring of the external pump and 120VAC line 33

2.6.2 Connecting line voltage - examples for different scenarios 33

3.0 Operation 45

3.1 Checklist for electrical conditions, ducting and water connections 45

3.2 Default settings 46

3.3 Default fan speed settings 46

3.4 Sequence of operation 47

3.4.1 HeatingMode 47

3.4.2 CoolingMode 47

3.4.3 Heat PumpMode 47

3.4.4 HumidificationMode 48

3.4.5 De-humidificationMode 48

3.4.6 Freeze ProtectionMode 48

3.5 LED status indicators 49

Built-in diagnostics feature 49

3.6 Operating the appliance with amobile app 50

3.6.1 Loading IBCconnect 50

3.6.2 Using the app to connect to IBC's AHU WiFi 51

3.6.3 Programming the air handling unit using the app 53

3.6.4 Using the app to view the AHU's information 55

3.7 Configuring settings and parameters via a USB text file 57

4.0 Service and maintenance 59

4.1Maintenance checklist for owners 59

4.2Maintenance for the heating contractor 59

4.2.1 Removing the fan assembly 59

4.2.2 Replacing the hot water coil appliance 61

4.3 Replacing the control board 62

4.4 Temperature sensors 64

5.0 Troubleshooting 67

5.1Measuring voltage on AHU boards 67

5.2 Pump not energized 67

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Section: Contents

5.3 Fault Codes 67

Air handling appliance - parts diagram 70

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Safety information

Manual safety markingsDangerPoints out an immediate hazardoussituation that must be avoided toprevent serious injury or death.

Warning

Points out a potential hazardoussituation that must be avoided toprevent serious injury or death.

Caution

Points out a potential hazardoussituation that must be avoided toprevent possible moderate injuryand/or property damage.

Note

Points out installation, maintenance andoperational notes to enhance efficiency,longevity and proper operation of the airhandling appliance.

DangerDo not store or use gasoline or other flammable vapors or liquids in the vicinity of this or anyother appliance. If you smell gas vapors, do not try to operate any appliance - do not touchany electrical switch or use any phone in the building. Immediately, call the gas supplierfrom a phone located remotely. Follow the gas supplier’s instructions, or if the supplier isunavailable, contact the fire department.

WarningImproper installation, adjustment, alteration, service or maintenance can cause propertydamage, personal injury, or loss of life. Read and understand the entire manual beforeattempting installation, start-up, operation, or service. Installation and servicemust beperformed only by an experienced, skilled installer or service agency.

Failure to follow all instructions in the proper order can cause personal injury or death. Readall instructions, including all those contained in component manufacturers’ manuals beforeinstalling, starting up, operating, maintaining, or servicing the appliance.

Warning

Disconnect power supply before any wiring/service is performed. Failure to do so couldresult in damage to appliance and/or electric shock.

Caution

Do not pierce cabinet as internal damagemay occur to electrical and hydronic components.

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Safety information

Caution

The air handler must be installed so that electrical components are not exposed to waterduring operation.

Note

All wiring on IBC air handlers must adhere to the National Electrical Code and/or localregulations.

Note

All appliances conform to CSA C22.2 NO. 236-15 and UL 1995 Stds. Water coilconforms to NSF / ANSI Std. 372.

Important safety instructionsFailure to read and comply with all instructions and applicable national and local codes may result inhazardous conditions that could result in property damage and injury to occupants, and in extremecases to death. Keep instructions near the air handling appliance for future reference.

When using electrical appliances, follow safety precautions to reduce the risk of fire, electric shock,or injury to persons, including:

Install or locate the air handling appliance only in accordance with the provided installationinstructions.Use the air handling appliance only for its intended use as described in this manual.Do not operate the air handling appliance if it is not working properly, or if it has beendamaged or dropped.Installation, start-up and servicing of IBC's air handling appliances must be done with careand attention, and should only be performed by competent, qualified, licensed and trainedplumbing and heating technicians. Contact your nearest authorized service facility forexamination, repair, or adjustment.If subjected to flooding, the appliancemust be replaced.

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Section: Safety information

Specifications

Specification AHU 800 AHU 1200 AHU 1600

Max. water temperature (°F/C°) 195 / 90

Coil performance at 180°F (Btu/hr) 66,800 80,600 99,300

Water pipe connections (inches) ¾MPT

External static pressure (" wc) 0.50

Max. operating water pressure (PSI) 150

Width (inches) 17.5 21 24.5

Depth (inches) 26

Height (inches) 32 38 42

Supply air opening width (inches) 16 19.6 23

Supply air opening depth (inches) 19.6

Side return air opening height (inches) 7 10.5 13

Side return air opening width (inches) 23

Bottom return air opening width (inches) 13 10.5 14

Bottom return air opening depth(inches)

23

Max. internal current power rating120Volts (Amp)

2.4

External pump supply 120V (Amp) 5

Voltage (V) 120

Max. air flow @ rated static pressure(CFM)

1138 1334 2900

Maximum return air temperature (°F/C°) 122 / 50

Filter size (MERV 8) (inches) 16 x 25 x 1 25 x 20 x 1 (notincluded)

25 x 20 x 1 (notincluded)

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Specifications

Heating capacityAHU 800 - Heating Capacity (Entering Dry Bulb Temperature 70°F) @ 800 CFM

Entering Water Temperature 3 GPM 4 GPM 5 GPM195°F (90°C) 68.6MBH 73.2MBH 76.2MBH

190°F (88°C) 65.7MBH 70.2MBH 73MBH

180°F (82°C) 60MBH 64.1MBH 66.8MBH

170°F (77°C) 54.4MBH 58.1MBH 60.5MBH

160°F (71°C) 48.7MBH 52.1MBH 54.3MBH

150°F (66°C) 43.1MBH 46.2MBH 48.1MBH

140°F (60°C) 37.6MBH 40.2MBH 41.9MBH

130°F (54°C) 32MBH 34.3MBH 35.8MBH

120°F (49°C) 26.5MBH 28.5MBH 29.7MBH

110°F (43°C) 21.1MBH 22.6MBH 23.7MBH

Table 1 Heating Capacity rating at 800 scfm (cubic feet / minute) - AHU 800

AHU 1200 - Heating Capacity (Entering Dry Bulb Temperature 70°F) @ 1200 CFM


190°F (88°C) 78MBH 84.1MBH 88.1MBH

180°F (82°C) 71.3MBH 76.9MBH 80.6MBH

170°F (77°C) 64.6MBH 69.8MBH 73.1MBH

160°F (71°C) 58MBH 62.6MBH 65.6MBH

150°F (66°C) 51.4MBH 55.5MBH 58.2MBH

140°F (60°C) 44.8MBH 48.4MBH 50.8MBH

130°F (54°C) 38.3MBH 41.4MBH 43.4MBH

120°F (49°C) 31.8MBH 34.3MBH 36MBH

110°F (43°C) 25.3MBH 27.4MBH 28.7MBH


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Section: Specifications

AHU 1600 - Heating Capacity (Entering Dry Bulb Temperature 70°F) @ 1600 CFM


190°F (88°C) 92.9MBH 102.3MBH 108.6MBH

180°F (82°C) 84.9MBH 93.5MBH 99.3MBH

170°F (77°C) 77MBH 84.8MBH 90MBH

160°F (71°C) 69.1MBH 76.1MBH 80.8MBH

150°F (66°C) 61.2MBH 67.4MBH 71.6MBH

140°F (60°C) 53.3MBH 58.8MBH 62.5MBH

130°F (54°C) 45.5MBH 50.2MBH 53.4MBH

120°F (49°C) 37.7MBH 41.6MBH 44.3MBH

110°F (43°C) 30MBH 33.2MBH 35.3MBH


Cabinet and air supply dimensions

Dimensions for the AHU 800 model

Figure 1 Supply and return air, boiler supply and return Figure 2 Frontal view

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Cabinet and air supply dimensions

Figure 3 Top supply air opening Figure 4 Bottom return air opening

Figure 5 Left side return air opening Figure 6 Right side return air opening

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Figure 7 Supply and return air, boiler supply and return Figure 8 Frontal view

Figure 9 Top view Figure 10 Bottom view

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Figure 13 Supply and return air, boiler supply andreturn

Figure 14 Frontal view

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Figure 15 Top view Figure 16 Bottom view


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Thermostat connectionsThree types of thermostats are compatible with the appliance: conventional, power stealing, andOpenTherm.

Low Voltage Terminal Description Notes

R 24V power Power to the low voltagethermostat.

W1 Heating Stage 1 Thermostat connects R toW1 for first stage heating.

Note: A jumper betweenW1andW2will initiateW2speed.

W2 Heating Stage 2 Thermostat connects R toW2 for second stageheating.

Y1 Cooling Stage 1 Thermostat connects R toY1 for first stage cooling.

Y2 Cooling Stage 2 Thermostat connects R toY2 for second stage cooling.

G Fan Thermostat connects R to Gto energize fan for ventilationspeed.

C 24V common Common return from thethermostat – not required forall thermostats.

T-T Dry Contacts

Boiler call for heat.

Auxiliary

Com

S1O/B Reversing valve Connects to outdoorappliance on heat pump.

Note: Energized for cooling.

S2 Not used

Compressor

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Low Voltage Terminal Description Notes

Com Connects to outdoorappliance.

S1 Compressor Stage 1 Connects to outdoorappliance.

S2 Compressor Stage 2 Connects to outdoorappliance (2nd Stage ifapplicable).

Humidifier

Com Humidifier 24VAC powered

Closes to activate thehumidifier.

HUM Humidifier

De-humidifer

Com De-humidifier 24VAC powered

Closes to activate the de-humidifier.

DEH De-humidifier

OpenTherm

OpenThermMaster To X-13 (1-2) on boiler (IBCSFC/SFB series)

The air handling appliance(master) communicates to(controls) the boiler(subordinate).

OpenTherm Slave From OpenTherm thermostat The thermostat (master)controls the air handlingappliance (subordinate).

Note

OpenTherm is a standard communications protocol used in central heating systems for thecommunication between a central heating device and thermostat.

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Thermostat connections

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1.0 Introduction

The IBC air handling appliance is designed for ducted heating and cooling. The appliance provides up tofour mounting options for flexibility and ease of installation. Return air duct connections can beconnected left, right, and bottom to suit the appliance's mounting position. For information onmountingpositions and sizing, seeCabinet and air supply dimensions on page 9.

Appliances installed with a right side air opening will require the air filter position to bemodified. Forinstructions, seeRepositioning the air filter brackets on page 24.

1.1 Standard features and benefitsIntegrated air handling applianceHigh efficiency motor with variable speed (ECM) centrifugal fanQuiet operationSlide out fan assemblyOptional filter rack positioningHigh efficiency fin tube coil

Multi-position configurationsIndustry standard duct sizes – supply air opening compatible with cased and uncased A/Cand heat pump coilsSingle stage or 2-stage heating and coolingCompact design for those awkward spaces; the ability to orient horizontally or verticallyHeat pump capableControl for external pump (5A - 120V)Flexible electrical connection knock-outs on left and right sidesStandard thermostat capableOpenTherm thermostat capableWiFi connection for programming with the IBCconnect mobile app

Sensors for protection and operation:

Included - sensors for supply air, return air, supply water, return water, humidifier, de-humidifier, and frost protectionNot included - (optional) outdoor sensor (IBC Part # 240-025), air conditioning coilsupply, air sensor kit

Maximum return air temperature 122°F (50°C)

1.2 ConformityInstallationmust conform to the requirements of the authority having jurisdiction. In the absence ofsuch requirements, the installationmust conform to the National Electrical Code ANSI/NFPA No.70, current edition.

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Section: Introduction

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2.0 Installation

Inspect shipment carefully for signs of damage. All equipment is carefully inspected and packed. IBC’sresponsibility ceases upon delivery of the air handling appliance to the carrier. Any claims for damage orshortagemust be filed immediately against the carrier. No claims for variances or shortages will beallowed by themanufacturer.

This section provides installation guidelines for the air handling appliance including locating theappliance, mounting positions, ducting, piping, and wiring.

2.1 Locating the appliance

2.1.1 Conditioned spaceEven though the air handling appliance operates quietly, try to locate the appliance tominimizenoise transmission to conditioned spaces.Avoid locating the appliance next to bedrooms or other noise sensitive locations.If connecting a cooling system to the appliance, we recommend insulating the supply air ductingwith aminimum of 1" thick fiberglass insulation with a vapor barrier. All insulated joints must besealed with a tape designed for this purpose.

2.1.2 Un-conditioned spaceIf locating the appliance in an un-conditioned space, protect the hydronic coil from freezing conditions.Propylene glycol may be required to prevent freezing of the coil. Use aminimum of 25% to amaximumof 50% mixture of propylene glycol with water.

Insulate the supply air and return air ducting with aminimum 2" thick fiberglass insulation with a vaporbarrier. All insulated joints must be sealed with tape designed for this purpose. The appliance shouldalso be insulated with aminimum 2" thick fiberglass insulation with a vapor barrier.

2.1.3 New constructionThe appliance is not designed to provide temporary heat during construction. If used, youmustthoroughly clean the appliance (including the fan and coil) to remove all contaminates and install with anew air filter . If used for temporary heating during construction, the warranty may be void.

2.1.4 Mobile homeThe appliance can be installed in amobile home. Appliances installed in amobile or manufactured homemust conform to theManufactured HomeConstruction and Safety Standard, Title 24 CFR, Part 3280and/or CAN/CSA Z240MH Series, Mobile Homes.

2.1.5 ClosetThe appliance is approved for installation in a closet.

Figure 19 View from top of air handlingappliance and duct in a closet

Figure 20 Front view of air handling appliance in acloset with ducting on the left

Orientation Clearance toCombustible Clearance for servicing

Top 6" 6"

D Left Side 0" 3" min.

B Right Side 0" 3" min

Bottom 0" 0" (if no connection)

C Front 1" 24"

A Back 0" 0"

Table 4 Recommended minimum clearance for combustibles and servicing

2.1.6 GarageGarage installations must be in a fully enclosed garage. The appliance is not suitable for outdoorinstallations.

DangerInstall the appliance at aminimum of 18" above the garage floor to prevent flammablevapors reaching the appliance. Failure to follow this directive could result in an explosionor electric shock, potentially causing serious personal injury and/or property damage.

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Section: Installation

2.1.7 ServiceabilityInstall the appliance so that the front access panel is readily accessible for servicing. The front panelmust be removed for access to the filter for replacement and access to the control board for wiring andsetup. For more information onmaintenance, seeService andmaintenance on page 59. For wiringdiagrams, seeElectrical connections on page 32.

2.2 Positioning and mounting the applianceThis section provides guidance on ways to orient and install the appliance. Ensure that:

You install the air handling appliance level and plumb.If the appliance is sitting on the floor, shim as needed to level the appliance.If the appliance is suspended, it is secured to themounting system.

The appliance offers four mounting options for supply air discharge: up, down, left, or right. For diagramson the possible orientations including dimensions, seeCabinet and air supply dimensions on page 9.

2.2.1 Return air openings for ductingThe appliance provides three options for return air opening: left or right side return air and bottom returnair.

Figure 21 Left return air opening Figure 22 Right return air opening

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2.1.7 Serviceability

If installing the appliance with the air supply opening on the right, you will need to reposition the airfilter brackets. For instructions, seeRepositioning the air filter brackets on page 24.

2.2.2 Positioning the air handling unitYou can install the appliance so the air flows in a vertical up-flow or down-flow direction, or in ahorizontal left or right direction.

Figure 23 : Upflow installation Figure 24 : Downflow installation

Figure 25 : Left side installation Figure 26 : Right side installation

2.2.3 Adding air conditioning coils or heat pump coilsCased evaporator coils used for providing cold air can be positioned above or below the air handlingappliance as shown below.

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Figure 27 : Air conditioning/heat pump cased coilmounted on top of the appliance - upflow

Figure 28 : Heat pump cased coil on the bottom ofthe appliance on the return side - upflow

2.2.4 Mounting an appliance on the wallMount the appliance with a pair of field-supplied wall brackets.

Figure 29 :Wall mounted air handling appliance

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2.2.4 Mounting an appliance on the wall

2.2.5 Repositioning the air filter bracketsAll appliances are delivered with the filter positioned for an appliance installed with a left or bottomreturn air supply opening. If you install the appliance with a right return air supply orientation forducting, you will need to reposition the air filter brackets in the opposite position.

To reposition the filter:

1. Remove the two screws from the front coverof the appliance, and set aside.

2. Slide out the filter.

The filter brackets highlighted below will need to berepositioned. 3. Remove the two wing nuts securing

the upper left bracket, and set themaside.

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5. Remove the wing nuts from the lower rightbracket.

6. Reposition the top and bottombrackets on the opposite side.

7. Slide the filter into the repositionedbrackets.

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2.2.5 Repositioning the air filter brackets

2.3 Duct workDucting design and installation should adhere toSMACNA and/or ASHRAE guidelines. Install theducting system to NFPA 90B (latest edition).Adhere to the following:

Size the supply air plenum duct fitting tothe size of the appliance's supply airopening, and extend for 3' above theappliance.Size the supply and return air ductingaccording to ASHRAE standards orequivalent.Seal all joints and connections to preventair leakage from the ducting system.Choose accessories that will notexcessively restrict the air flow and createexcessive pressure drop on the system.

2.3.1 Sizing the ductsIf using flex / insulated flex ducting, ensure that you allow for a higher pressure drop.

Branch Duct - CFM at .25"wc external static pressure (galvanized duct)

Round CFM range

3" 20-30

4" 30-35

5" 55-65

6" 90-100

7" 135-160

Table 5 Sizing round galvanized duct for CFM range

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Supply / Return Air Trunk Size CFM at .3"wc external static pressure (galvanized duct)

Round Rectangular CFM range8" 8 x 6

8 x 7160-190190-230

9" 8 x 8 230-275

10" 10 x 8 275-360

11" 12 x 8 360-460

12" 14 x 8 460-570

13" 16 x 8 570-650

13" 18 x 8 650-750

14" 20 x 8 750-850

14" 22 x 8 850-950

15" 24 x 8 950-1050

Table 6 Supply air trunk size CFM at galvanized duct .3"wc ESP for return and supply air

2.3.2 Ducting installed in conditioned spaceIf a cooling system is connected to the appliance, we recommend insulating the supply air ducting withaminimum of 1" thick fiberglass insulation with a vapor barrier. All insulated joints must be sealed withtape designed for this purpose.

2.3.3 Ducting installed in un-conditioned spacesSupply air and return air ducting should be insulated with aminimum 2" thick fiberglass insulation with avapor barrier. All insulated joints must be sealed with a tape designed for this purpose.

2.3.4 Making the return air openingsBoth sides as well as the bottom of the appliance providemarkings for themaximum return air opening.Use suitable metal cutters to perforate themarked area for the return air supply. Ensure that you cutwithin themarked area.

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2.3.2 Ducting installed in conditioned space

Figure 30 Shears' opening

2.4 Connecting the appliance to the boilerGenerally it’s best to place the appliance as close as practical to the boiler. If placing the applianceaway from the boiler, ensure the piping system is designed to allow the easy removal of air from theboiler piping and easy flushing of the system.

Copper Pipe Sizing BTU / HR Capacity

½" 16,000 BTU

¾" 36,000 BTU

1" 72,000 BTU

1¼" 110,000 BTU

Table 7 Pipe sizing

2.4.1 Sizing pumpsNote

To size the pump, refer to the Installationmanual of the boiler manufacturer for boiler headloss specifications.

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Integral pump

Check valve (field supplied)

Fill station or glycol feeder (field supplied)

Figure 31 Basic installation: boiler / water heater with pump

Air Handler Coil Head Loss - AHU 800

Flow rate (gpm) 3 4 5

Fluid pressure drop (ft/water) 1.6 2.7 3.5

Table 8 Air handler coil head loss at 180°F (82°C) - AHU 800

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2.4.1 Sizing pumps









2.4.2 Using Propylene GlycolUsing a propylene glycol / water mixture with the boiler/ air handling appliance reduces the heatingcapacity of the system by up to 10%, and increases the pump head required to circulate the heatingfluid. Use aminimum of 25% to amaximum of 50% mixture.

It is important to install the system with the correct pipe size to achieve optimum heating capacityfrom the air handling appliance. It is equally important to choose the correct circulator.

2.5 Connecting the appliance to a tankless water heaterCheck local codes to ensure that piping the appliance to a tankless water heater is allowed.

The air handling appliancemust be installed in close proximity to a tankless water heater. As aguideline, we recommend amaximum distance of 10 feet between the appliance and the tanklesswater heater using¾" copper piping.

The table below provides pipe sizing specifications for IBC's tankless water heater. Refer to othermanufacturers' manuals for correct sizing of pipes.

Note

For pipe sizing, refer to the Installationmanual of the water heater manufacturer for boilerhead loss specifications.

Tankless Water Heater Head Loss - Superflow SFT 199


Head loss @ flow (ft) 14 23 33

Table 11 Tankless water heater head loss: SFT 199

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Connection to the space heating circuit through a drinkable water system as shownmay be prohibitedby local code.

Non-ferrous pump (sized for combined head loss of boiler/water heater, air handler -interconnecting piping)

Check valve (may be built into pump)

Potable water expansion tank

Filter required where contaminants are present in the supply water

Figure 32 Basic installation with tankless water heater

Note

The SFT 199maximum water temperature is 149°F ( 65°C ). Ensure that this is hot enough tomeet the heating requirements of the space being heated.

If piped correctly, DHW takes priority over space heating. When the appliance detects reduced watertemperature (that is, a call for DHW), the system will reduce the fan speed.

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2.5 Connecting the appliance to a tankless water heater

2.6 Electrical connectionsAll electrical wiring to the boiler (including grounding) must conform to local electrical codes and/orthe National Electrical Code, ANS/NFPA No. 70 – latest edition, or the Canadian Electrical Code,C22.1 - Part 1. In addition, you should refer to the boiler's installationmanual.

The control board diagram below shows the various wiring connections such as the thermostat,accessories, heat pump, and external pump.

Figure 33 Air handling appliance - electrical wiring diagram

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2.6.1 Wiring of the external pump and 120VAC lineYouwill need to use a 3mm flat-bladed screwdriver to wire the external pump and the 120VAC line.Insert a wire into the connector (at the front of the block). Inserting a screwdriver into the connectorreleases the wire.

Figure 34 : Inserting a wire for an external pump and120VAC line

Figure 35 : Removing a wire

2.6.2 Connecting line voltage - examples for different scenariosThis section provides diagrams for wiring a 120 VAC / 15 amp supply, external Pump –maximum 4Amps 120 Volts, thermostat connections – Standard TH or OpenTherm (communications thermostatprotocol), external pump control, boiler connection for a call for heat, and connection to an AC or HPappliance (air handling appliance side only).

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2.6.1 Wiring of the external pump and 120VAC line

An internal time delay is preset, enabling theW2 blower speed after a preset period of time. Ajumper betweenW1 andW2will initialize this speed without the time delay.

Figure 36 Single-stage heating, on-demand heat source

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An internal time delay is preset enabling theW2 blower speed after a preset period of time. Ajumper betweenW1 andW2will initialize this speed without the time delay.

Optional

Figure 37 Single-stage heating with fan control, on-demand heat source

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2.6.2 Connecting line voltage - examples for different scenarios

An internal time delay is preset enabling theW2 blower speed after a preset time period. Ajumper betweenW1 andW2will initialize this speed without the time delay.

Optional

Figure 38 Single-stage heating, single-stage cooling, fan control, on-demand heat source

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An internal time delay is preset enabling theW2 blower speed after a preset duration of time. Ajumper betweenW1 andW2will initialize this speed without the time delay.

Optional

Not used

Reversing valve (O or B) is selectable via the blower control interface.

Figure 39 Single-stage heat pump, fan control, on-demand heat source backup

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Required if boiler does not have an integral pump.

Dry contact from air handler to boiler / enables call for heating

Figure 40 Single-stage heating from boiler, primary/secondary piping

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Dry contact from air handler to boiler / enables call for heat

Figure 41 Single-stage heating with fan control, boiler with primary/secondary piping

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Dry contact from air handler to boiler / enables call for heat.

Figure 42 Single-stage heating, single-stage cooling, boiler with primary/secondary piping

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Timermust close TT to create a boiler-on command in the HP mode. This time delay isinitialized after establishing aW1 signal.

Reversing valve (O or B) is selectable via the blower control interface.

Not used.

Figure 43 Single-stage heat pump with boiler backup - primary/secondary piping

41




Reversing valve (O or B) is selectable via the blower control interface

W1 = heat pump, W2 = energize TT for boiler - removes heat pump

Not used

Figure 44 Single-stage heat pump with boiler backup, primary/secondary piping (2-stage thermostat)

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W1 = boiler + low fan, W2 = boiler + high fan

Not used

Figure 45 Two-stage cooling with boiler heating (2-stage thermostat)

43


Required if boiler does not have an integral pump


W1 = boiler + low fan, W2 = boiler + high fan

Not used

Figure 46 Single-stage cooling with boiler heating (2-stage thermostat)

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3.0 Operation

Once installation of the appliance is completed, and before operating the appliance, review thefollowing guidelines:

Checklists for electrical conditions, ducting and water connectionsDefault settingsDefault fan speed settingsSequence of operationLED status indicators.Operating the appliance with amobile appUsing the app to view the appliance's settings

3.1 Checklist for electrical conditions, ducting and waterconnections

Checking electrical conditions Check

Ensure the power supply to the air handling appliance is 120V 15A circuit.

The appliance is not designed to work with 208-240V. If connected to 208-240V, electricaldamage will result, and the appliance or components may need to be replaced.

Check all line voltage electrical connections to ensure all connections are correct and tight. Check thermostat connections. Thermostat is in a suitable location.

Checking supply and return water piping connections Check

All connections are pressure tested and leak-free. All piping flushed to ensure all air is removed. Check valve is installed and the external pump is flowing in the correct direction. Boiler / water heater is installed as per themanufacturer's instructions and is safe to operate.

Checking ducting connections Check

All connections are pressure tested and leak-free. All duct work is sized correctly and joints are sealed. All supply air dampers and registers are opened. Duct insulation is installed and sealed as required. Inspect the filter, return air ducting and registers to ensure free air movement.

Checking boiler / water heater settings Check

Ensure the water temperature to the heating coil is sufficient to meet the heatingdemands of the space.

3.2 Default settingsThe following table shows the factory-default settings.

Default - Basic Settings

HeatingMode 1 stage

CoolingMode 2 stage

Boiler Heating 1 stage and 2 stage

Temperature °F

Pump Enable On

Tankless Mode Off

3.3 Default fan speed settingsFor fan speed defaults and ranges, see the table below:

AHU - Fan speed Operation

W1 Heating stage 1 = 600 CFM Range 300-800

W2 Heating stage 2 = 800 CFM Range 300 – 1000 (must be ≥ than heating stage 1)

Y1 Cooling stage 1 = 700 CFM Range 300 – 800

Y2 Cooling stage 2 = 1000 CFM Range 300-1000 (must be ≥ than cooling stage 1)

G Fan on speed = 400 CFM Range 150-1000

Note

For safety reasons, a switch is built into the door. The switch prevents the fan fromoperating if the door is not installed. With the door removed, the appliance's control boardwill remain powered, enabling programming of themobile app.

46

Section: Operation

3.4 Sequence of operation

3.4.1 Heating ModeUpon a call for heat from the thermostat:

R toW1 orW2 is energized.The External Pump relay is closed, energizing the external pump if connected (required whenconnecting the air handling appliance to a tankless water heater or SL series boiler).The TT (boiler on Heat 1) contacts close creating a call for heat at the boiler.The fan is energized and:

Operates at W1 orW2 speed.Fan speed ramps up to themaximum value of its W1 range value orW2 range value.

When a demand for heat is satisfied, the system:

Opens TT (or Heat 1) to remove the boiler's call for heat.Continues to operate the fan for 45 seconds; also operates the pump contacts for 30 seconds.

3.4.2 Cooling ModeUpon a call for cooling from the thermostat:

R to Y1 or Y2 is energizedThe fan is energized and:

Operates at Y1 or Y2 speed.Energizes the O/B terminal if there is a heat pump.

When cooling demand is satisfied, the air handling appliance:

Opens the compressor S1 and /or S2 contacts, and de-energizes O/B if there is a heat pump.The fan continues to operate for 45 seconds.

3.4.3 Heat Pump ModeUpon a call for heat from a heat pump:

R to Y1 or Y2 is energized.R to O/B remains de-energized.The fan is energized and:

Operates at Y1 or Y2 speed.Operates a low speed for 60 seconds.

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3.4 Sequence of operation

When heating demand is satisfied:

The air handling appliance opens the compressor S1 and /or S2 contacts.The fan continues to operate for 45 seconds.

3.4.4 Humidification ModeUpon a call for humidification from the thermostat:

G toW is energized.The humidifier's contacts (24V output) will close.

3.4.5 De-humidification ModeUpon a call for de-humidification from the thermostat:

G toW or Y is energized.The de-humidifier's contacts (24V output) will close.

3.4.6 Freeze Protection ModeFreeze protectionmodemonitors the return air temperature into the air handling appliance.

If the internal return air temperature sensor detects a return air temperature below 41°F, the airhandling appliance will energize the fan, the pump contacts, and the TT (boiler) contacts to create acall for heat. When the return air temperature increases to 46°F or more the air handling appliancewill turn off the fan, TT (boiler) contacts, and pump contacts.

If the internal return air temperature sensor detects a return air temperature below 35°F, the airhandling appliance will turn off the fan, and continue to energize TT (boiler) contacts and pumpcontacts.

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Section: Operation

3.5 LED status indicatorsThe appliance displays four LED indicators, each representing an operating status.

POWER (Green background) FAULT (Redbackground)

HEAT (Greenbackground)

COOL(Greenbackground)

State LED(s) Description

Standby FAULT HEAT COOL Each LED blinks on and off in a“chasing” sequence.

Heating HEAT LED displays a steady state.

Cooling COOL LED displays a steady state.

Fan only (G) HEAT COOL Short synchronized flashing.

Warning FAULT LED flashes on. The appliance willcontinue to operate; however, certainoperations may not function correctly.

Fault FAULT LED displays a steady state. Theappliance will not service heat or coolingcalls.

Table 12 Status indicators

Built-in diagnostics featureThe appliance contains a built-in diagnostic feature that enables you to obtain information on settings,faults, and errors.

To view diagnostics:

1. Insert a USB stick into the controller, wait approximately 10 seconds, and then remove the USBstick.

The controller generates a text file that contains all the settings and any faults or warnings thatare present on the appliance.

2. To view the text file, insert the USB stick into any computer, and open the generated text filewith “Wordpad” or a similar program.

The file namewill be: “AHUxxxxx.TXT”, where “xxxxx” is the serial number of the controller.

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3.5 LED status indicators

3.6 Operating the appliance with a mobile appAll air handlers come configured with default factory settings. IBC's freemobile app "IBCconnect"(Android or iOS app) enables users tomonitor and adjust default settings in a single air handlingappliance. This app is compatible onlywith Android and iOS devices and with the IBC air handler.

Note

Alternatively, it's possible to change settings using a USB stick with a customconfiguration text file. Using a USB with a custom text file is the best approach forconfiguringmultiple air handlers that will use the same settings (seeConfiguring settingsand parameters via a USB text file on page 57).

To connect, the following setup steps need to be completed:

1. Loading the app from the app store (Google Play and Apple store).2. Using the app to connect to IBC's AHU WiFi.3. Programming the air handling unit with the app.

3.6.1 Loading IBCconnect

Loading the app will depend on whether you are using an Android or Apple iPhone device.

3.6.1.1 Loading IBCconnect from the Android Google Play Store

1. In the GooglePlay Store search box, enter IBC Technologies (case sensitive).

2. Select the icon, and tap Install. To verify that the app has loaded, see the icon

in the list with existing apps.

For next steps, seeUsing the app to connect to IBC's AHU WiFi on page 51.

3.6.1.2 Loading IBCconnect from the iOS Apple Store

1. In the iOs Apple Store search box, enter IBC Technologies (case sensitive).

2. Select the icon, and tap Install.

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Section: Operation

Once IBCconnect is installed on your device, you need to change some of the settings. This mayvary slightly depending on the device and the version of iOS your device is using.

3. In themain iPhoneSettings, select Cellular.4. Locate IBCconnect underCellular Data, and set toOff.

Optionally, in themain iPhone settings, select IBCconnect app, and then go toSiri & Search and setSearch & Siri Suggestions toOff. See the next section forWiFi connection.

3.6.2 Using the app to connect to IBC's AHUWiFiOnce you've loaded the IBCconnect app onto your mobile or tablet, you will need to establish aconnection between the IBCconnect app and the IBC air handler. IBC's AHU has aWiFi access pointbuilt into it. Your device needs to be connected to IBC's AHU WiFi point before the app can be used tocontrol or monitor IBC's air handler. This is done through the app's WiFi network settings.

3.6.2.1 Connecting an Android device

The following instructions may vary slightly depending on the device being used.

1. Open the IBCconnect app.

TheWiFi connection of the device is displayed. If theWiFi connection is not IBC-AHU, aWiFiSETTINGS button is displayed. Tap theWiFi SETTINGS button.

TheWiFi network screen appears. The IBC-AHU will appear in the device’s list of WiFi availablenetworks as "IBC-AHU-xxxxx", where "xxxxx" is the serial number of the controller in the IBC-AHU.

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3.6.2 Using the app to connect to IBC's AHU WiFi

If there aremultiple IBC-AHUs in the area, the appliance with the strongest signal will likelybe the controller you want to connect to.

2. Select IBC-AHU-xxxxx.

3. The first time you connect, enter 1234567890when prompted for a password.

Depending on the version of Android your device has, after a few seconds youmay see awarning, as shown below.

With the AHU cover off, the LEDs on the circuit board will start blinking simultaneously in aON-OFF-ON-OFF-OFF-OFF pattern when connected.

4. Tap the device's back button to return to the IBCconnect app, then tap GET STARTED toaccess the Home page to start adjusting settings.

3.6.2.2 Connecting an iOs device

The IBCconnect app requires an IBC-AHU WiFi connection. You need to change some app settingsafter installation.

1. In themain iPhone settings, select Cellular.2. Scroll down to IBCconnect (under Cellular Data), and set toOff.3. Navigate to the device’s WiFi Settings.

4. Connect to the IBC-AHU WiFi.

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Section: Operation

The IBC-AHU will appear in the device’s list of WiFi Access Points as “IBC-AHU-xxxxx”, where“xxxxx” is the serial number of the controller in the IBC-AHU. If there aremultiple IBC-AHU’s inthe area, the appliance with the strongest signal will likely be the controller you want to connectto.

5. Select IBC-AHU-xxxxx.

6. The first time you connect, enter 1234567890when prompted for a password.

With the AHU cover off, the LEDs on the circuit board will start blinking simultaneously in a ON-OFF-ON-OFF-OFF-OFF pattern when connected.

7. Exit from the "Setting" screen and open the IBCconnect app again.8. Check your device is connected to the IBC-AHU-xxxxx WiFi connection. This will display the

landing page.

The landing page that appears after starting IBCconnectwill depend on the device and whether you haveconnected to IBC's AHU WiFi.

3.6.3 Programming the air handling unit using the appThe IBC factory pre-programs the name of themodel (AHU 800, AHU 1200 or AHU 1600) in theappliance. However, you will need to use the app to set the heating and coolingmode and to changedefault settings.

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3.6.3 Programming the air handling unit using the app

To set the mode using the IBCconnect app:

1. Tap (menu icon), and select Basic Settings.

2. Set theHeat Mode andCool Mode.

3. Tomake adjustments to settings, tap (menu), and then select Advanced Settings.

We recommend setting "Tankless" to "On" in most applications for optimal performance.

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Section: Operation

4. Configure settings as desired (or accept defaults), and then tap (SAVE).

5. To check themodel andmode, go to (menu) and select About.

3.6.4 Using the app to view the AHU's informationOnce the device is connected to IBC's AHU WiFi, the following screens will display:

Figure 47 : Android mobile showing message device isconnected to WiFi

Figure 48 : iOs mobile showing message device isconnected to WiFi

Do not check the "Don’t ask again for this network” if prompted; the device will likely default to “NO” forstaying connected if this is selected.

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3.6.4 Using the app to view the AHU's information

Note

If you want to connect to another air handling appliance, on the landing page tap theWiFi SETTINGS button, and choose the required AHU WiFi connection. To return tothe landing page, exit the app, and then reopen it.

1. Tap theGET STARTED button.

An Android prompt may request that youmake your device's location discoverable.

2. TapAllow and thenOK to grant permission.

The AHU app Status screen is displayed showing the air handler's factory default settings. You cannavigate to the Home page, and begin adjusting settings.

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Section: Operation

Note: If device is not maintaining a connection with IBC's AHU WiFi

If the IBCconnect app is unable tomaintain a connection to the IBC AHU WiFi, theIBCConnect app footer will show an "X" icon aboveWiFi. It is likely the device is attemptingto perform uploads in the background. To prevent cell phone data andWiFi conflict:

1. Remove the IBC AHU WiFi connection from the device.2. Go to the device’sWiFi Setting.3. Press and hold the IBC-AHU-xxxxx entry.4. Tap Forget Network.5. Place the device in "AirplaneMode".6. Reconnect the device to the IBC AHU WiFi by selecting the "IBC-AHU-xxxxx" from

the list of access points. Ensure that theWiFi reconnect option is disabled.7. Start the IBCconnect app again.

3.7 Configuring settings and parameters via a USB textfileYou can change and customize the default settings in one or more air handlers via a single .configASCII text file labeled "ahusetup.cfg". The custom text file can be placed on a USB stick and insertedinto each air handling appliance. To obtain a custom text file, contact IBC.

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3.7 Configuring settings and parameters via a USB text file

http://www.ibcboiler.com/support/TIPortal/Content/Support/Contact.htm

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4.0 Service and maintenance

The IBC air handling appliance is designed for durability and easy access to themain components:control board, fan assembly, hot water coil assembly, and filter. Over time, components such assensors may require replacing and servicing. Note that failure to use the correct procedures or partscould result in unsafe operation.

4.1 Maintenance checklist for ownersOwners should arrange follow-up inspections and simplemaintenance procedures according to IBC'ssuggested servicing guidelines below.

Maintenance Required Frequency Check

Check and replace filter as needed. Replace the filter monthly.Inspect system for unusual noises. Call your local heating contractorfor service if needed

Monthly

Have your local heating contractor inspect the system annually.This service should include the heat appliance connected to the AirHandling appliance.

Annually

4.2 Maintenance for the heating contractor

4.2.1 Removing the fan assembly1. Remove the two screws from the front

cover, and set aside.2. Remove the two bolts from the fan

assembly plate.

3. Remove the twoMolex plugs from thecontrol board.

4. Detach the cable and grommet.

5. Slide out the fan assembly.

Note

When you install the replacement fanassembly:

Ensure that you install the fanassembly, so that the fan cablescan reach the control board, thatis, the cables are positionedtowards the front left of the fanassembly.Reinsert the split fan grommetcorrectly. See images below.

Note large and small holes.

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Section: Service and maintenance

4.2.2 Replacing the hot water coil appliance

1. Remove the two screws from the front cover, andset aside.

2. Carefully unclip the threecables, and lean them awayfrom the hot water coil.

3. Remove the nuts and bolts. 4. Slide out the fan coil.

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4.2.2 Replacing the hot water coil appliance

4.3 Replacing the control boardAfter you replace the control board in the appliance, you will need to program some settings usingthe IBCconnect app.

To replace the control board:

1. Unplug all the connectors from the control board.

2. Remove the four screws securing the control board to the appliance, and set them aside forthe replacement board. In the next step, you will separate the humidity sensor strip from themain replacement control board using a scoring knife.

3. Place the replacement board on a flat surface, and using the knife, score a straight linebetween themain board and the humidity sensor strip. The strip should snap off by hand,without force.

Figure 49 Separating the humidity sensor strip from the main replacement board

4. Secure the replacement board in place with the four screws.

5. Insert the humidity sensor strip into the side slit of the black insulation foam, until the 5 pinsengage in the board's 5-pin connector (see below), and secure the strip with a plastic zip tie.

Figure 50 Inserting the humidity sensor strip and securing with a cable tie

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6. Plug in all connectors (temperature sensor from the coil, connector for the transformer, connectorfor fan power, connector for fan control, connector to the door switch, and the ground wireconnector).

Now youmust use the air handler app (IBCconnect to program themodel name, mode, andchange default settings (if desired).

7. To set themodel, mode, and to configure settings:a. Open the IBCconnect app on your phone.

b. Go toConfigure AHU.c. From theAHU Model dropdown, select themodel.

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4.3 Replacing the control board

d. Select (SAVE).

After saving, the AHU controller will restart.

e. Close the app, and then open it again.

For information on setting the cooling and heatingmode and other settings, seeProgrammingthe air handling unit using the app on page 53.

4.4 Temperature sensorsThe resistance of the temperature sensors varies inversely with temperature. You need tomeasurethe temperature of the sensed environment compared with the value from themeasurement of theresistance (obtained by connecting a good quality test meter capable of measuring up to 100 kΩ atthe controller end of the sensor lead).

To obtain a resistance reading, remove power to the boiler. Remove the wire leads by disconnectingtheir respectiveMolex connectors from the sensor(s) in question. Placemulti-meter probes into thesensor’s femaleMolex connector socket. Do not apply voltage to the sensor - damagemay result.

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Temp. °F/°C Resist.Ω – Ohm Temp. °F/°C Resist.

Ω – Ohm

0 / -18 85,362 100 / 38 5,828

5 / -15 72,918 105 / 41 5,210

10 / -12 62,465 110 / 43 4,665

15 / -9 53,658 115 / 46 4,184

20 / -7 42,218 120 / 49 3,760

25 / -4 39,913 125 / 52 3,383

30 / -1 34,558 130 / 54 3,050

35 / 2 29,996 135 / 57 2,754

40 / 4 26,099 140 / 60 2,490

45 / 7 22,763 145 / 63 2,255

50 / 10 19,900 150 / 66 2,045

55 / 13 17,436 155 / 68 1,857

60 / 16 15,311 160 / 71 1,689

65 / 18 13,474 165 / 74 1,538

70 / 21 11,883 170 / 77 1,403

75 / 24 10,501 175 / 79 1,281

80 / 27 9,299 180 / 82 1,172

85 / 29 8,250 185 / 85 1,073

90 / 35 7,334 190 / 88 983

95 / 35 6,532 195 / 91 903

Table 13 10K Ω Temperature sensor resistance values

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4.4 Temperature sensors

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5.0 Troubleshooting

This section includes a table of warning and error messages that may appear on the appliance as wellfaults that may appear on the air handling appliance app.

A problem that does not prevent the operation of the air handler is declared as a "warning". A problemthat prevents the appliance from operating is declared as an "error" and the appliance is shut down.

5.1 Measuring voltage on AHU boardsThe control voltage transformer is not bonded to the AHU cabinet. Whenmeasuring the voltage suppliedto the individual control circuit, youmust reference the common post of the circuit. If youmeasure toground or to another common terminal, misleading readings of approximately 14V will occur.

To test for nominal 24V, reference the adjacent COM connection. For example, to test voltage atCompressor S1 terminal, measure for VAC between Compressor COM andCompressor S1.

5.2 Pump not energizedIf the pump is not energizing:

In the IBCconnect app, go toAdvanced Settings, and check that Pump Enabled is set to "on".In the IBCconnect app, go toBasic Settings, and check that Heat Mode is not set to "HeatPump": During Stage 1 heat pump heating, the AHU pump is not energized by design, to avoidinterfering with circulation through the heat pump. AHU pump is energized at Stage 2 call forheat.Check the AHU board for blown pump fuse—the only fuse rated for 10A.

5.3 Fault CodesFault Code/Error Message Description Possible Fix

Inlet Temperature Sensor Sensor not connected orfaulty.

Check the sensor. For resistancereading, see Table 13.

Outlet Temperature Sensor Sensor not connected orfaulty.


Aux Air In Temperature Sensor Sensor not connected orfaulty.


Air Out Temperature Sensor Sensor not connected orfaulty.


Cool Air Temperature Sensor Sensor not connected orfaulty.


A/C Temperature Sensor Sensor not connected orfaulty.


Fault Code/Error Message Description Possible Fix

Dehumidifier Temperature Sensor Sensor not connected orfaulty.


Outdoor Temperature Sensor Sensor not connected orfaulty.


Air In Temp Sensor (Probe) Sensor not connected orfaulty.


Barometer Probe not connected ordevice is faulty.

Check the probe.

Humidistat Probe not connected ordevice is faulty.

Check the probe.

Door Open / No Fan Signal Service door is open or fanfault.

Check door or if doorswitch is faulty.Check if harness isdisconnected.Check if fan is turning.

No Fan RPM No rotation of the fan isdetected.

Check if fan is turning ordisconnected. Check the fuse.

Use ameter to check 120V ispresent on the external connectionto the board. If 10V is not comingfrom the fan it is not receiving120V. Check the 10V signal onthe web app.

A/C Freeze Freezing detected in the A/Ccoil.

The coil needs to defrost. Refer tothemanual for the air conditionerfor details on how to preventfreezing.

Dehumidifier Freeze Freezing detected in thedehumidifier appliance.

The coil needs to defrost. Refer tothemanual for the dehumidifier fordetails on how to prevent freezing.

Thermostat Fault Simultaneous heating andcooling calls detected

Check that the heating lead hasnot been crossed with the coolinglead from the Nest thermostat.There is also a known bug relatedto some thermostat models thatare over 3 years old: the backingplate allows a short to signal a callfor cooling.

RTOS Fault 1 Software fault Contact IBC Technical Supportfor software upgrade.

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Section: Find troubleshooting for IBC Technologies' air handling appliances.

Fault Code/Error Message Description Possible Fix

RTOS Fault 2 Software fault Contact IBC Technical Supportfor software upgrade.

Table 14Warnings and error messages shown on the air handler unit app

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5.0 Troubleshooting

Air handling appliance - parts diagram

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Section: Find troubleshooting for IBC Technologies' air handling appliances.

Item Number P-Kit Number Description

100 P-1000 Door assembly - AHU 800

P- 1019 Door assembly - AHU 1200

P-1022 Door assembly - AHU 1600

110 P-1001 Air filter size 25 x 16 x 1 - AHU 800

Air filter size 25 x 20 x 1 - AHU 1200, - AHU 1200

120 P-1008 Door switch, SPST-NO. 15A 125V

120 Wiring harness

130 P-1011 Supply water temperature sensor

140 P-1012 Temperature sensor and grommet

150 P-1011 Return water temperature sensor

160 P-1003 Hot water coil 2-ton appliance - AHU 800

P-1020 Hot water coil 3-ton appliance - AHU 1200

P-1022 Hot water coil 4-ton appliance - AHU 1600

170 P-1005 Transformer 40VA 120V

180 P-1001 Control board

190

P-1007

Filter bracket wing nuts x 4

200 Air filter lower bracket

210 Air filter upper bracket

220 P-1017 Coil hex bolts, hex nut, washer x 2

Fan plate hex bolts, washer x 2

230 P-1004

P-1021

P- 1024

Fan andmotor assembly - AHU 800



240 Fan wiring grommet

250 P-1009 Sensor wiring harness

260 P-1017 Door thumb screws x 2

* P-1017 = Part of the hardware kit

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Air handling appliance - parts diagram

Revision historyR0 (June 2019) Initial release.

R1 (July 2019) Updated wiring diagrams andmademinor edits.

R2 (October 2019) Updated wiring diagrams, added LED status indicators, and information onusing a text file to modify settings in multiple air handlers.

R3 (November) Added table of basic default settings and other minor changes.

R4 (May) Introduction of the AHU 1200 and AHU 1600models

CAN IBC Technologies Inc. USA IBC Technologies USA IncA 8015 North Fraser Way A 1702 Taylor’s LaneBurnaby, BC Canada V5J 5M8 Cinnaminson NJ 08077 USAT 604-877-0277 T 856-877-0544F 604-877-0295 F 856-735-5584

Toll Free: 1-844-HEAT-IBC/ 1-844-432-8422www.ibcboiler.com

Information in this document is subject to change without notice. IBC assumes no responsibility for changesmade to the manual due to clerical errors, to regulation changes, or to product development.

March, 2021 | 120-324E-R4

©IBC Technologies Inc. 2021

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