Installation Guides
All products & configurations
Colour Wiring Diagrams
Inspector-ready, every ADP model
Product Spec Sheets
Dimensions, ratings & certs
Troubleshooting & Service
Relay replacement & conversion
Testing & Certification
CSA & NRC documentation
Section 1
Installation Instructions
Step-by-step installation and wiring instructions for all Hoyme dampers and relay adaptors.
HAC — Inline Air Control Dampers
HOM — Combustion Air Damper
MAC — Motorized Fresh Air Damper
HAE — Furnace Fan Air Exchanger
HAE Installation Instructions — Residential
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HAE Installation Instructions — Commercial
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HAE — How It Works (System Diagram)
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ADP — Interface Relay Adaptors
ADP-0241-05A Installation Instructions
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ADP-0240-1WS Installation Instructions
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ADP-0242-05A Installation Instructions
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ADP-0243-S5A Installation Instructions
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ADP-0244-05A Installation Instructions
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ADP-024T-S20VA Installation Instructions
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Grasslin Interval Timer — Operation Instructions
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ADP-0MV2-S5A Installation Instructions
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ADP-1101-05A Installation Instructions
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ADP-1101-10AS Installation Instructions
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ADP-1101-10AV Installation Instructions
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ADP-1102-10A Installation Instructions
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ADP-1102-S5A Installation Instructions
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ADP-1102-TPX Installation Instructions
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ADP-1102-TW5 Installation Instructions
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ADP-1102-TWP Installation Instructions
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ADP-1103-TW5 Installation Instructions
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ADP-1103-TPX Installation Instructions
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RADP-0241-10A Installation Instructions
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RADP-0241-S10A Installation Instructions
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RADP-0242-S10A Installation Instructions
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RADP-1102-TPX Installation Instructions
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TMADP-1102-TPX Installation Instructions
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TMADP-1103-TWP Installation Instructions
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TRADP-1102-TPX Installation Instructions
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Section 2
Colour Wiring Diagrams
Full-colour wiring diagrams for all Hoyme damper and relay adaptor configurations. Click any diagram to download the PDF.
How to find your diagram: Diagrams are numbered by application type. Diagrams 1–3 cover combustion air (HOM) installations. Diagrams 4–12 cover fresh air replacement air (HAC/MAC) installations with various adaptor and ventilation fan combinations. If you are unsure which diagram applies to your installation, call 1-800-661-7382.
Diagrams 1–2B1 — Combustion Air Damper (HOM) Installations
#1Combustion Air Damper (HOM-0x11-SF1) interlocked to one furnace. Damper with end switch proves open before furnace fires.PDF ↓
#1ACombustion Air Damper (HOM-0x11-SF1) interlocked to a furnace and interconnected to a DHW with a heat limit switch.PDF ↓
#1BDHW with heat limit switch (HLS-1100) interconnected to a combustion air damper (HOM-0x11-SF1), no furnace.PDF ↓
#2Combustion Air Damper (HOM-0x12-SF2) interlocked to two furnaces/boilers.PDF ↓
#2ACombustion Air Damper (HOM-0x12-SF2) interlocked to two furnaces and interconnected to one power close replacement air damper (HAC-0x10-OPC) opens for both furnaces.PDF ↓
#2A1Combustion Air Damper (HOM-0x12-SF2) interlocked to two furnaces and interconnected to two (HAC-0x10-OPC) power close replacement air dampers that open for either furnace.PDF ↓
#2B1Combustion Air Damper (HOM-0x12-SF2) interlocked to two furnaces and interconnected to two separate (HAC-0x11-OPC) power close replacement air dampers c/w relays to open during furnace firing.PDF ↓
Diagrams 3–3A — Combustion Air + Fresh Air Combined
Diagram 4 — Replacement Fresh Air Damper with Relay, Furnace Interlock
Diagrams 5–5C — 120Vac Exhaust Fan with ADP-1101-05A
#5120Vac exhaust fan with adaptor (ADP-1101-05A) causing a power close fresh air damper to open and also turn on a furnace fan without interfering with combustion air damper operation.PDF ↓
#5ATwo furnaces, combustion air damper (-SF2), two power close fresh air dampers (-PC) operating together. Includes an exhaust fan and a 120Vac adaptor (ADP-1101-05A).PDF ↓
#5BTwo furnaces, combustion air damper (-SF2), two power close fresh air dampers — one without relay and one c/w relay, each damper operating separately with one to each furnace. Exhaust fan and ADP-1101-05A.PDF ↓
#5B1Two furnaces, combustion air damper (-SF2), two power close fresh air dampers (-PC) c/w relays operating separately, also open when furnaces fire. Exhaust fan and ADP-1101-05A.PDF ↓
#5B2One furnace, no combustion air damper, two 120Vac ventilation fans, one power open replacement air damper (-PO), one ADP-1101-05A, one ADP-1101-10AS.PDF ↓
#5B3Two 120Vac ventilation fans, one power close replacement air damper (-PC), one ADP-1101-05A, one ADP-1101-10AS.PDF ↓
#5C120Vac two double pole ventilation fan switches with two exhaust fans, combustion air damper and power close replacement air damper (-PC).PDF ↓
Diagrams 6–6C3 — 120Vac Ventilation Fan Switch Configurations
#6120Vac ventilation fan switch, adaptor (ADP-1101-05A) and power close replacement air damper c/w relay (-PC) opens during furnace firing.PDF ↓
#6A120Vac ventilation fan switch, adaptor (ADP-1101-05A) and power open replacement air damper (-PO) stays closed during furnace firing.PDF ↓
#6A1Two 120Vac double pole ventilation fan switches and two exhaust fans, adaptor (ADP-1101-05A) and power open replacement air damper (-PO).PDF ↓
#6A2Three 120Vac double pole ventilation fan switches and exhaust fans, adaptor (ADP-1101-05A) and power close replacement air damper c/w relay (-PC), opens during furnace firing.PDF ↓
#6A3Combustion air damper, two separate ventilation and exhaust fans, two adaptors (ADP-1101-05A) and power close replacement air damper (-PC).PDF ↓
#6A4Two 120Vac separate ventilation fans, two adaptors (ADP-1101-05A) and (ADP-1102-TWP), one power close replacement air damper (-PC) opens during furnace firing.PDF ↓
#6A5Two 120Vac ventilation fans, two adaptors (ADP-1101-05A) and (ADP-1102-TWP), one power open replacement air damper (-PO) opens during furnace firing.PDF ↓
#6A6Ventilation switch and fan, two adaptors (ADP-1101-05A) and (ADP-0241-05A), one power open fresh air damper (-PO) opens during venting and furnace firing.PDF ↓
#6A7Two separate 120Vac ventilation fans (primary and secondary), two adaptors (ADP-1102-TWP) and (ADP-1102-10AS), one power open replacement air damper (-PO), opens during furnace firing.PDF ↓
#6A8Two 120Vac ventilation fan switches (primary and secondary), two adaptors (ADP-1102-TWP) and (ADP-1102-10AS), one power close replacement air damper (-PC), opens during furnace firing.PDF ↓
#6A9Heating and cooling system equipped with a steam humidifier using adaptor (ADP-0242-05A).PDF ↓
#6BEconomizer circuit system to ventilate a computer server room with 120Vac vent switch and fan, adaptor (ADP-1101-05A), and one power close air damper (-PC).PDF ↓
#6B1Ventilation switch and large exhaust fan, two replacement fresh air supply ducts with two power open air dampers (-PO), two adaptors (ADP-1101-05A) and (ADP-0241-05A).PDF ↓
#6B2Ventilation switch and fan, two adaptors (ADP-1101-05A) and (ADP-0241-05A), one power close fresh air damper (-PC) opens during venting and furnace firing.PDF ↓
#6B3Forced air furnace having replacement air supply damper (power close - PC).PDF ↓
#6B4Forced air furnace having replacement air supply damper (power close - PC) with relay. Opens during a call for heat and A/C.PDF ↓
#6B5Forced air furnace having replacement air damper (power close - PC) with relay. Opens during a call for heat and with designated ventilation fan.PDF ↓
#6CVentilation switch, one adaptor (ADP-1102-TWP), one power close replacement air damper (-PC) interconnected with exhaust fan, also opens during furnace firing.PDF ↓
#6C1Ventilation switch, one adaptor (ADP-1102-TWP), one power open replacement air damper (-PO) interconnected with exhaust fan, also opens during furnace firing.PDF ↓
#6C2Ventilation switch, two adaptors (ADP-1102-TWP) and (ADP-0241-05A), one power open replacement air damper (-PO) interconnected with exhaust fan, heating and/or cooling. Damper opens with or without A/C but not interconnected with A/C.PDF ↓
#6C3Ventilation switch, two adaptors (ADP-1102-TWP) and (ADP-0241-05A), one power open replacement air damper (-PO) interconnected with exhaust fan, heating and/or cooling, interconnected with A/C.PDF ↓
Diagrams 7–7B — 24Vac Ventilation Switch/Timer Configurations
#7One 24Vac ventilation switch/timer, combustion air damper, one adaptor (ADP-0241-05A), one power close replacement air damper (-PC).PDF ↓
#7ATwo 24Vac ventilation switches/timers and two exhaust fans, combustion air damper, one adaptor (ADP-0241-05A), one power close replacement air damper (-PC).PDF ↓
#7A1Two 24Vac ventilation switches/timers and two exhaust fans, combustion air damper (HOM-0x11-SF1), one adaptor (ADP-0241-10A) and 7-pole connector, one power close replacement air damper (HAC-0x10-OPC). Also turns on inlet fan.PDF ↓
#7BOne power close replacement air damper (-PC), one adaptor (RADP-0241-10A) c/w 120Vac controlled receptacle, two 24Vac transformers, two power open air dampers (HAC-0x10-SPO) c/w end switches to control adaptor.PDF ↓
Diagrams 8–8A9 — Single Furnace, 24Vac Ventilation and ADP-0241
#8One 24Vac ventilation switch, one adaptor (ADP-0241-05A), one power close replacement air damper (HAC-0x11-OPC) c/w relay, also opens during furnace firing.PDF ↓
#8AOne 24Vac ventilation switch, one adaptor (ADP-0241-05A), one power open replacement air damper (HAC-0x10-OPO). Does not open during furnace firing.PDF ↓
#8A1One 24Vac ventilation switch, one adaptor (ADP-0241-05A), one power open replacement air damper (-PO). Does not open during furnace firing and turns on 120Vac fan.PDF ↓
#8A2One power open replacement air damper (-PO), one adaptor (RADP-0241-10A) c/w 120Vac controlled receptacle, two 24Vac transformers, two power open air dampers (HAC-0x10-SPO) c/w end switches to control adaptor.PDF ↓
#8A3Forced air furnace with combustion air damper (HOM-0x12-SF2) which also supplies replacement air for 120Vac gas dryer using adaptor (RADP-0241-S10A).PDF ↓
#8A4Forced air furnace with combustion air damper (HOM-0x12-SF2) and power close replacement air damper (HAC-0x10-OPC) which supplies replacement air for 120Vac gas dryer using adaptor (RADP-0241-S10A).PDF ↓
#8A5Forced air furnace with combustion air damper (HOM-0x12-SF2) and power open replacement air damper (HAC-0x10-OPO) which supplies replacement air for 120Vac gas dryer using adaptor (RADP-0241-S10A).PDF ↓
#8A6Forced air furnace with MAC power close air supply damper (MAC-0x11-SPC) which supplies replacement air for 120Vac gas dryer using adaptor (RADP-0241-S10A).PDF ↓
#8A7Forced air furnace with replacement air damper (HAC-0x10-OPC) and MAC power close air supply damper (MAC-0x11-SPC) which supplies replacement air for 120Vac gas dryer using adaptor (RADP-0241-S10A).PDF ↓
#8A8Forced air furnace with power open replacement air damper (HAC-0x10-OPO) and MAC power close air supply damper (MAC-0x11-SPC) which supplies replacement air for 120Vac gas dryer using adaptor (RADP-0241-S10A).PDF ↓
#8A9Forced air furnace with power open replacement air damper (HAC-0x10-OPO) and a ventilation switch/timer that uses adaptor (ADP-0242-05A) to open replacement air damper with ventilation fan and also opens during furnace firing.PDF ↓
Diagrams 8B–8D2 — Two Furnaces, Gas Dryer, and Multi-Fan Configurations
#8BForced air furnace with power close replacement air damper (HAC-0x11-OPC) c/w relay and a ventilation switch/timer that uses adaptor (ADP-0241-05A) to ventilate and also open during furnace firing.PDF ↓
#8B1Forced air furnace with power close replacement air damper (HAC-0x11-OPC) c/w relay and a ventilation switch that uses adaptor (ADP-0241-10A) to ventilate and also open during furnace firing.PDF ↓
#8B4Forced air furnace with combustion air damper (HOM-0x12-SF2) and a power open replacement air damper (HAC-0x10-OPO) that uses adaptor (RADP-1102-S10A) to supply replacement air for 120Vac gas dryer.PDF ↓
#8B5Forced air furnace with power close replacement air damper (MAC-0x11-SPC) and a power close replacement air damper (HAC-0x10-OPC) that uses adaptor (RADP-0242-S10A) to supply replacement air for 120Vac gas dryer.PDF ↓
#8B6Forced air furnace with power close replacement air damper (MAC-0x11-SPC) and a power open replacement air damper (HAC-0x10-OPO) that uses adaptor (RADP-0242-S10A) to supply replacement air for 120Vac gas dryer.PDF ↓
#8B7Forced air furnace with power close replacement air damper (HAC-0x10-OPC) and a ventilation switch/timer that uses adaptor (ADP-0242-05A) to open replacement air damper with ventilation fan and also opens during furnace firing.PDF ↓
#8B8Forced air furnace with power close replacement air damper (HAC-0x10-OPC) and two exhaust/ventilation fans that use two adaptors (ADP-1101-05A) and (ADP-0242-05A) to open damper with fans and also opens during furnace firing.PDF ↓
#8B9Forced air furnace with power close replacement air damper (HAC-0x10-OPC) and two exhaust/ventilation fans that use one adaptor (ADP-1103-TW5) to open replacement air damper with fans and also opens during furnace firing.PDF ↓
#8CTwo forced air furnaces sharing a replacement air duct with a power close fresh air damper (HAC-0x11-OPC) c/w relay controlled by adaptor (ADP-0241-05A).PDF ↓
#8C5Two forced air furnaces sharing a replacement air duct with a power open fresh air damper (HAC-0x10-OPO) with one adaptor (ADP-1102-TWP) for one furnace and a second adaptor (ADP-0241-05A) for the second furnace.PDF ↓
#8C6Two forced air furnaces sharing a replacement air duct with a power close fresh air damper (HAC-0x10-OPC) with one adaptor (ADP-1102-TWP) for one furnace and a second adaptor (ADP-0241-05A) for the second furnace.PDF ↓
#8C7Forced air furnace having a replacement air supply duct together with an exhaust fan venting three bathrooms equipped with 24Vac power open control dampers.PDF ↓
#8DTwo forced air furnaces sharing a replacement air duct with a power close fresh air damper (HAC-0x11-OPC) c/w relay with two adaptors (ADP-0241-05A) controlling the replacement air damper for either furnace.PDF ↓
#8D2Forced air furnace with combustion air damper (HOM-0x11-SF1) and a power close replacement air damper (HAC-0x10-OPC) that uses adaptor (ADP-0241-05A) to open both dampers during heating and cooling cycles.PDF ↓
Diagrams 9–9C1 — Timer Adaptor (TMADP) Configurations
#9Forced air furnace with combustion air damper (HOM-0x11-SF1) and a power close replacement air damper (HAC-0x10-OPC) controlled by adaptor (TMADP-1102-TPX). Damper also opens during furnace firing.PDF ↓
#9AForced air furnace having a power close replacement air damper (HAC-0x10-OPC) and timer adaptor (TMADP-1102-TPX). Damper does not open during furnace firing.PDF ↓
#9A1Forced air furnace having a power open replacement air damper (HAC-0x10-OPO) and timer adaptor (TMADP-1102-TPX). Damper does not open during furnace firing.PDF ↓
#9A2Furnace circulation fan and replacement air damper (HAC-0x10-OPO) controlled by timer adaptor (TMADP-1102-TPX). Includes ADP-1101-05A for additional ventilation fans. Damper does not open during furnace firing.PDF ↓
#9A3Forced air furnace with power open replacement air damper (HAC-0x10-OPO). Separate ventilation switch controls exhaust fan plugged into adaptor (TRADP-1102-TPX). Damper does not open during furnace firing.PDF ↓
#9A4Forced air furnace with power open replacement air damper (HAC-0x10-OPO) and two or more exhaust fans controlled by adaptors (TMADP-1102-TPX) and (ADP-1102-TWP). Also opens during furnace firing.PDF ↓
#9A5Same as #9A4 but uses a power close fresh air damper (HAC-0x10-OPC).PDF ↓
#9A6Same as #9A3 but uses a power close fresh air damper (HAC-0x10-OPC).PDF ↓
#9BForced air furnace having a power close replacement air damper (HAC-0x10-OPC) controlled by timer adaptor (TMADP-1102-TPX) and a 3-way ventilation switch. Replacement air damper does not open during furnace firing.PDF ↓
#9B1Forced air furnace having a power open replacement air damper (HAC-0x10-OPO) controlled by timer adaptor (TMADP-1102-TPX) and a 3-way switch. Replacement air damper does not open during furnace firing.PDF ↓
#9CSame as #9B but has a designated ventilation switch which functions fully and also an additional 3-way switch to control ventilation fan only.PDF ↓
#9C1Same as #9B1 but has a designated ventilation switch which functions fully and also an additional 3-way switch to control ventilation fan only.PDF ↓
Diagrams 10–12D1 — End Switch Proving and High-Volume Exhaust Configurations
#10Forced air furnace with power close replacement air damper (HAC-0x11-OPC) c/w relay and a designated ventilation switch for exhaust fan that uses adaptor (TMADP-1102-TPX). Also opens during furnace firing.PDF ↓
#11Forced air furnace with combustion air damper (HOM-0x11-SF1) and a power close replacement air damper (HAC-0x11-SPC) c/w end switch that uses adaptor (ADP-1102-TPX). Both dampers open during furnace firing.PDF ↓
#11BDomestic hot water tank with combustion air damper (HOM-0x11-SF1) c/w end switch that uses adaptor (ADP-1102-S5A) to prove combustion air damper is open before power vent runs.PDF ↓
#12Forced air furnace with power close replacement air damper (HAC-0x11-SPC) c/w relay and end switch connected to adaptor (ADP-1102-TPX) to prove damper opens before ventilation fan and furnace fan are allowed to run. Damper also opens during furnace firing.PDF ↓
#12ASimilar to #12 but uses adaptor (RADP-1102-TPX) for a plug-in ventilation fan.PDF ↓
#12BForced air furnace with power open replacement air damper (HAC-0x11-SPO) c/w relay and end switch connected to adaptor (ADP-1102-TPX) to prove damper opens before ventilation fan and furnace fan are allowed to run. Damper does not open during furnace firing.PDF ↓
#12B1Forced air furnace with power open replacement air damper (HAC-0x11-SPO) c/w relay and end switch connected to adaptor (ADP-1103-TPX) to prove damper opens before ventilation fan and furnace fan are allowed to run. Damper opens during furnace firing.PDF ↓
#12B2Same as #12B1 but uses a power close replacement air damper (HAC-0x10-SPC) that also opens during furnace firing.PDF ↓
#12B3Two exhaust fans operating separately and each connected to an adaptor (ADP-1102-TPX) that allows both to be interlocked to a furnace fresh air damper (HAC-0x11-SPO) that proves to be open before exhaust fans are allowed to run. Fresh air damper does not open during furnace firing.PDF ↓
#12B4Two exhaust fans operating separately — one connected to adaptor (ADP-1102-TPX) and the other to adaptor (ADP-1103-TPX) — both interlocked to a furnace fresh air damper (HAC-0x10-SPO) that proves to be open before exhaust fans are allowed to run.PDF ↓
#12CHigh volume kitchen exhaust fan and an inlet supply fan interconnected to a forced air heating system with an interlocking inlet power open replacement air damper (HAC-0x10-SPO) c/w end switch and an adaptor (ADP-1102-TPX). Replacement air damper does not open during furnace firing.PDF ↓
#12DFurnace circulation fan and replacement air damper (HAC-0x10-OPO) controlled by exhaust fan switch and adaptor (ADP-1101-05A). Additional power open damper with end switch (HAC-0x10-SPO) and HIGH VOLUME kitchen exhaust fan controlled by adaptor (ADP-1102-TPX).PDF ↓
#12D1Same as #12D but by replacing adaptor (ADP-1101-05A) with adaptor (ADP-1102-TWP), the furnace replacement air damper will now open during furnace firing.PDF ↓
Section 3
Product Information Sheets
General information sheets, specification references, and part number guides for Hoyme dampers and accessories.
Section 4
Testing & Certification
Independent test reports and certification documentation for Hoyme products.
Section 5
Troubleshooting & Service
Troubleshooting procedures, relay replacement kit instructions, and field conversion guides for Hoyme motorized dampers.
Troubleshooting Procedures
Relay Replacement Kit Instructions
SF1 Relay Replacement Kit — (3121-1332-SF1)
PDF ↓
SF2 Relay Replacement Kit — Switch Type (3121-1332-S24)
PDF ↓
SF2 Relay Replacement Kit — Fuse Type (3121-1332-F24)
PDF ↓
Field Conversion
Can't find the document you need?
Contact Hoyme technical support or your local wholesaler. We can help you identify the correct wiring diagram for your installation — free of charge.