IBC AHU 800 - Thermostat Connections

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Figure 32 Air handling appliance - electrical wiring diagram. OpenTherm is a planned feature not currently

available.

2.7.1 Thermostat connections

The appliance is compatible with conventional and power stealing thermostats. OpenTherm is a

planned feature not currently available.

Low Voltage Terminal Description Notes

Thermostat

Section: Installation

Main Page

Table of Contents3
Safety Information7
Specifications9
Heating Capacity10
Cabinet and Air Supply Dimensions12
Dimensions for the AHU 800 Model12
Dimensions for the AHU 1200 LV and AHU 1200 Models13
Dimensions for the AHU 1600 and AHU 2000 LV Models15
Introduction17
Standard Features and Benefits19
Conformity20
Installation21
Locating the Appliance21
Conditioned Space21
Un-Conditioned Space21
New Construction21
Mobile Home21
Closet21
Garage22
Serviceability23
Positioning and Mounting the Appliance23
Return Air Openings for Ducting23
Positioning the Air Handling Unit24
Adding Air Conditioning Coils or Heat Pump Coils24
Mounting an Appliance on the Wall25
Repositioning the Air Filter Brackets26
Duct Work28
Sizing the Ducts28
Ducting Installed in Conditioned Space29
Ducting Installed in Un-Conditioned Spaces29
Making the Return Air Openings29
Connecting the Appliance to a Boiler30
Sizing Pumps30
Using Propylene Glycol31
Connecting the Appliance to a Tankless Water Heater31
Cold Air Sentry (A.k.a. Freeze Protection)33
Electrical Connections33
Thermostat Connections34
Wiring of the External Pump and 120VAC Line36
Connecting Line Voltage37
Worked Examples37
Wiring Single-Stage Heating with a Boiler or Combi Boiler39
Wiring Single-Stage Heating with a Tankless Water Heater as a Heat Source40
Wiring Single-Stage Heating with Boiler or Combi Boiler, and Single-Stage Cooling41
Wiring Two-Stage Cooling with a Boiler or Combi Boiler Heating Using a 2-Stage Thermostat42
Wiring Single-Stage Heat Pump with a Boiler or Combi Boiler as Backup43
Wiring Single-Stage Heat Pump with a Boiler or Combi Boiler as Backup (Emergency Heat on T-Stat)45
Wiring Two-Stage Heat Pump with a Boiler or Combi Boiler as Backup (2-Stage Thermostat)47
Wiring Two-Stage Heat Pump (2-Stage Thermostat)49
Wiring Single-Stage Heating, Single-Stage Cooling, with the Tankless Water Heater as the Heat Source50
Wiring Two-Stage Cooling with a Tankless Water Heater as a Heat Source51
Wiring Single-Stage Heat Pump with a Tankless Water Heater as a Backup52
Wiring Two-Stage Heat Pump with a Tankless Water Heater as a Backup54
Wiring Make-Up Air with a Boiler or a Combi as a Heat Source56
Before Operating the Air Handler59
Operation61
Sequence of Operation61
Status Indicators62
Operating the Air Handler Using the Ibcconnect App63
Connecting the Ibcconnect App63
Operational Settings in the App66
Programming the Air Handler71
Configuring Settings and Parameters Via a USB Text File73
Service and Maintenance75
Maintenance Checklist for Owners75
Maintenance Checklist for Service Contractor75
Maintenance for the Heating Contractor75
Removing the Fan Assembly75
Replacing the Heating Coil in the Air Handler78
Replacing the Control Board80
Temperature Sensors82
Troubleshooting84
Using the Ibcconnect App to Troubleshoot the AHU84
Warning / Fault Codes84
Measuring Voltage on AHU Boards86
Pump Not Energized86
Troubleshooting the Ibcconnect App86
Unstable Wifi Connection86
Wifi Password87
Ibcconnect Unable to Find Air Handler on the Network87
Using Built-In Diagnostics87
Air Handling Appliance - Parts Diagram88
Appendice: Wiring Diagram91

IBC AHU 800 - Thermostat Connections

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