HMI HOM Series – Fresh Air Damper for Combustion Air Control
Quick Links
- HOM Installation Instructions – (pdf)
- HOM – Commercial Installation Instructions – (pdf)
- HOM Troubleshooting Guide
HOM Series Dampers automatically control fresh air for combustion in Residential and Commercial buildings. Sizes range from 4″ to 9″ diameters in increments of 1″. For larger Commercial sizes, several Dampers are mounted in tandem with End Switches connected in series. May be used for retrofit and new installations.
Passive Fresh Air Inlet Ducts waste energy, are sometimes plugged and therefore become unsafe. Alternatively, HMI HOYME Motorized Dampers are safe as there is no need to plug the duct. The result is added comfort, added safety and savings in energy costs.
HOM Series Dampers are connected to the appliance transformer and are Power Closed. When the appliance fires, the Damper drops open by gravity and does not interfere with Appliance Transformer.
CSA International Certified. Satisfaction guaranteed.
Hoyme HOM Damper Residential Installation Hoyme HOM Damper Commercial Installation
Features Include:
- Simple to install, attaches to the terminating end of Insulated Air Supply Duct.
- Interlocks with the safety control system of gas, propane and Oil Fired Appliances which guarantees the Damper to be open before the fire starts.
- Certified as required by National Gas Codes ; fail-safe open, power closed.
- Durable, patented HMI ‘Spring Motor Drive’ with Nylon Bearings.
- Standard connection to 24Vac Thermo/Aqua-Stat Circuits plus, with the use of ‘Interface Relay Adaptors‘ , Damper is compatible with MilliVolt DC and 120 Vac safety control systems.
Options Include:
- Additional Relay and end-proving-switch to control two appliances (SF2).
- Interface Relay Adaptors to provide interlocking connection to Millivolt DC and Line Voltage AC controls for Commercial buildings.
- TEST/RUN switch (Standard equipment) to automatically disconnect circuits for testing Damper and appliance operation.
General Damper Identification (i.e HOM-0511-SF1):
| Series | Diameter (in) | Motors | Relays | End Switch | Furnace | No. of Switches/Furnaces |
| HOM | 05 | 1 | 1 | S | F | 1 |
HOM Installation Instructions – Printer Friendly(pdf)
Colored Wire Diagrams used with the HOM Series Dampers
SF1 – One Appliance Model:
- #1. Combustion Air Damper (HOM-0x11-SF1) Interlocked to One Furnace.
- #1A. Combustion Air Damper (HOM-0x11-SF1) Interlocked to a Furnace and Interconnected to a DHW with a Heat Limit Switch.
- #3. Combustion Air Damper (HOM-0x11-SF1) Interlocked to a Furnace and Interconnected to a Power Close Fresh Air Damper (HAC-0x10-OPC).
- #5. 120vac 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 the Operation of the Combustion Air Damper.
- #5C. 120vac Two Double Pole Ventilation Fan Switches With Two Exhaust Fans, Combustion Air Damper and Power Close Replacement Air Damper (-PC).
- #6A3. Combustion Air Damper, Two Separate Ventilation and Exhaust Fans, Two Adaptors (ADP-1101-05A) and Power Close Replacement Air Damper (-PC).
- #7 One 24vac Ventilation Switch/Timer, Combustion Air Damper, One Adaptor (ADP-0241-05A), One Power Close Replacement Air Damper (-PC).
- #7A Two 24vac Ventilation Switches/Timers and Two Exhaust Fans, Combustion Air Damper, One Adaptor (ADP-0241-05A), One Power Close Replacement Air Damper (-PC).
- #7A1 Two 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.
- #9. Forced Air Furnace With Combustion Air Damper (HOM-0x11-SF1) and a Power Close Replacement Air Damper (HAC-0x10-OPC) that uses Adaptor (TMADP-1102-TPX) to Open Replacement Air Damper and Run Furnace Fan With Ventilation Switch and During Timer Intervals and Also Opens During Furnace Firing.
- #11. Forced 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) That Proves Replacement Air Damper is Opened Before Exhaust Fan and Furnace Fan Runs With Ventilation Switch and Both Dampers Open During Furnace Firing.
SF2 – Two Appliance Model
- #1A. Combustion Air Damper (HOM-0x11-SF1) Interlocked to a Furnace and Interconnected to a DHW with a Heat Limit Switch.
- #2. Combustion Air Damper (HOM-0x12-SF2) Interlocked to Two Furnaces/Boilers.
- #2A. Combustion 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.
- #2A1. Combustion 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.
- #2B1. Combustion 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.
- #5A. Two 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).
- #5B. Two Furnaces, Combustion Air Damper (-SF2), Two Power Close Fresh Air Dampers With One (HAC-0x10-OPC) no relay and One (HAC-0x11-OPC) c/w Relay, Each Damper Operating Separately With One to Each Furnace. Included is an Exhaust Fan and a 120vac Adaptor (ADP-1101-05A) That Opens the Fresh Air Damper and Turns On the Furnace Fan During Ventilation Only.
- #5B1. Two Furnaces, Combustion Air Damper (-SF2), Two Power Close Fresh Air Dampers (-PC) c/w Relays Operating Separately With One to Each Furnace, Also Open When Furnaces Fire. Included is an Exhaust Fan and a 120vac Adaptor (ADP-1101-05A) to Open the Main Fresh Air Damper and Start the Furnace Fan.
- #8A3. Forced Air Furnace With Combustion Air Damper (HOM-0x12-SF2) Which Also Supplies Replacement Air For 120vac Gas Dryer Using adaptor (RADP-0241-S10A).
- #8A4. Forced 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).
- #8A5. Forced 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).