HMI HAC Series – Inline Fresh Air Control Damper
Quick Links
- HAC–General Information Sheet
- HAC–120Vac models
- HAC–Brochure
- HAC–Installation Instructions
- HAC–Colored Wiring Diagram information
- Field Change HAC- PO to PC
- HAC–Power Close with Relay
- Custom HAC– Example Pictures
- HAC-E – Motorized Elbow Damper
- HAC-F–Flue Dampers
- HCR/HSI– Rectangular Dampers
- HCR–Economizer for A/C
This Inline motorized 24Vac Fresh Air Control Damper , Series HAC , fastens to an Air Duct in-line to control the flow of air, partially or completely, depending on its mechanical setting.
This damper may be ordered with one motor, MS10A Actuator (replaces previous two Motor Model) or a Belimo Actuator.
CSA International Certified(up to 12″Ø). Satisfaction guaranteed.
 Hoyme-HAC-1-motor (with mounting collar) |  Hoyme-HAC-MS10A-Actuator |  Hoyme-HAC-Belimo-Actuator |  Hoyme-HAC-H-1-motor-heat – Fresh Air Damper for Heat |
 Hoyme-HAC-1-motor (without mounting collar) |  Hoyme-HAC-MS10A-Actuator-hansen-motor |  Hoyme-HAC-Belimo-Actuator |  Hoyme-HAC-SPO-H – Fresh Air Damper for Heat |
| 4″ – 9″ in Diameter | 6″ – 12″ in Diameter | 8″ – 20″ in Diameter | Motor and controls are mounted 1″ away from Damper body |
HAC-0x10-OP* HAC-0x10-SP* HAC-0x11-OP* HAC-0x11-SP* | HAC-0x50-OP* HAC-0x50-SP* HAC-0x51-OP* HAC-0x51-SP* | Various Belimo Actuator Models may be ordered. HAC – H – Larger sizes (Over 20″ in diameter with Belimo Actuators.) | HAC-0x10-OP* – H HAC-0x10-SP* – H HAC-0x11-OP* – H HAC-0x11-SP* – H HAC-0x50-OP* – H HAC-0x50-SP* – H |
| x = Diameter in Inches * = PO – Power Open or PC – Power Closed Damper S P* = includes End Switch O P* = No End Switch HAC-0x1 1-OPO <- the ” 1” in this position indicates an added Relay, a ” 0” indicates no Relay |
General Damper Identification : i.e. HAC-0611-SPC-H (Special for Heat):
| Series | Diameter (in) | Motors | Relays | End Switch | Power Open/Closed | Special for Heat |
| HAC | 06 | 1 | 1 | S | PC | H |
Features Include:
- Easy to install in-line as part of standard air duct.
- Durable, patented HMI HOYME ‘Spring Motor Drive’ with nylon bearings.
- 26 ga. galv. steel from 4″Ø to 5″Ø.
- 24 ga. galv. steel from 6″Ø to 9″Ø
- 24 ga. galv. re-enforced steel from 10″Ø to 14″Ø
- 22 ga. galv. re-enforced steel from 16″Ø to 18″Ø
- Other sizes and weight of steel upon request.
- 8″Ø dampers and smaller are 8″ in length
- 9″Ø dampers are 9″ in length
- 10″Ø dampers are 10″ in length
- 11″Ø dampers and larger are 11″ in length
- 9″Ø dampers include a single reinforcement band
- 10″Ø dampers and larger include two reinforcement bands
- These dampers can be used for the new ventilation code which requires a designated exhaust fan, a centrally located switch marked ‘VENTILATION’ and a fresh air intake damper, all interconnected to the furnace circulation fan.
- See HMI HOYME ‘Interface Relay Adaptors‘ which have been specially designed for these dampers and new ventilation codes.
Other options that may be added:
- Adding Insulated wrap at the factory
- Adding an End Switch
- Adding a Relay
- HCR – Economizer for use with Air conditioner
- Mounting Collar is included but may be left off
- Interface Relay Adaptors permit connection to Line Voltage controls.
Photo examples of Typical Installations in homes:
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| Hoyme-HAC-make-up-air-installation | Hoyme-HAC-E-Motorized Elbow-humidifier-installation |
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| Hoyme-HAC-zone-air-installation | Hac and HOM installed with a forced air furnace; HAC Damper is pictured in green |
Colored Wiring Diagrams used with HAC- Series
- #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.
- #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 that opens only for Furnace fire.
- #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.
- #5C. 120vac Two Double Pole Ventilation Fan Switches With Two Exhaust Fans, Combustion Air Damper and Power Close Replacement Air Damper (-PC).
- #6A. 120vac Ventilation Fan Switch, Adaptor (ADP-1101-05A) and Power Open Replacement Air Damper (-PO) Stays Closed During Furnace Firing.
- #6A1. Two 120vac Double Pole Ventilation Fan Switches and Two Exhaust Fans, Adaptor (ADP-1101-05A) and Power Open Replacement Air Damper (-PO).
- #6A2. Three 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.
- #6A3. Combustion Air Damper, Two Separate Ventilation and Exhaust Fans, Two Adaptors (ADP-1101-05A) and Power Close Replacement Air Damper (-PC).
- #6A4. Two 120vac Separate Ventilation Fans, Two Adaptors (ADP-1101-05A) and (ADP-1102-TWP), One Power Close Replacement Air Damper (-PC) Opens During Furnace Firing.
- #6A5. Two 120vac Ventilation Fans, Two Adaptors (ADP-1101-05A) and (ADP-1102-TWP), One Power Open Replacement Air Damper (-PO) Opens During Furnace Firing.
- #6B. Economizer 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).
- #6C. Ventilation Switch, One Adaptor (ADP-1102-TWP), One Power Close Replacement Air Damper (-PC) Interconnected With Exhaust Fan, Also Opens During Furnace Firing.
- #6C1. Ventilation Switch, One Adaptor (ADP-1102-TWP), One Power Open Replacement Air Damper (-PO) Interconnected With Exhaust Fan, Also Opens During Furnace Firing.
- #6C2. Ventilation 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.
- #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.
- #8. One 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.
- #8A. One 24vac Ventilation Switch, One Adaptor (ADP-0241-05A), One Power Open Replacement Air Damper (HAC-0x10-OPO) Does Not Open During Furnace Firing.
- #8A1. One 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.
- #8A2. One 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.
- #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).
- #8A7. Forced 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).
- #8A8. Forced Air Furnace With Power Open Replacement Air Damper (HAC-ox10-OPO) and MAC Power Close Air Supply Damper (MAC-0x11-SPC) Which Supplies Replacement Air For 120vac Gas Dryer Using adaptor (RADP-0241-S10A).
- #8B. Forced 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.
- #8B1. Forced 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.
- #8C. Two 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).
- #8D. Two 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.
- #9. Forced Air Furnace that has Combustion Air Damper (HOM-0x11-SF1) and a Power Close Replacement Air Damper (HAC-0x10-OPC) controlled by Adaptor (TMADP-1102-TPX) to Open Replacement Air Damper and run Furnace Fan with Ventilation Switch also during Timer Interval. Damper also Opens During Furnace Firing.
- #9A. Forced Air Furnace having a Power Close Replacement Air Damper (HAC-0x10-OPC) and Timer Adaptor (TMADP-1102-TPX) that opens Replacement Air Damper and turns on Furnace Fan with either Ventilation Switch or Timer. Replacement Air Damper does not open during Furnace firing.
- #9A1. Forced Air Furnace having a Power Open Replacement Air Damper (HAC-0x10-OPO) and Timer Adaptor (TMADP-1102-TPX) that opens Replacement Air Damper and turns on Furnace Fan with either Ventilation Switch or Timer. Replacement Air Damper does not open during Furnace firing.
- #9A2. Furnace Circulation Fan and Replacement Air Damper (HAC-0x10 OPO) controlled by Timer Adaptor (TMADP-1102-TPX) to operate simultaneously at designated times. The addition of Adaptor (ADP-1101-05A) allows the addition of extra ventilation fans to be added. Replacement Damper does not open during furnace firing.
- #9A4. Forced Air Furnace With Power Open Replacement Air Damper (HAC-0x10-OPO) and Two (or more) Exhaust Fans Controlled by Two (or more) Separate Double Pole Ventilation Switches Using Adaptor (TMADP-1102-TPX) and Adaptor (ADP-1102-TWP) to Open Replacement Air Damper and Run Furnace Fan With Any Ventilation Switch and During Timer Intervals and Also Opens During Furnace Firing.
- #9A5. Same as #9A4 But Uses a Power Close Fresh Air Damper (HAC-0x10-OPC).
- #9B. Forced 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. The Switch, in one position, allows the Timer Adaptor to turn on t he Ventilation Fan, open the Replacement Air Damper and turn on the Furnace Fan simultaneously; the ventilation Switch, in the other position, turns on the Ventilation Fan only. Replacement Air Damper doe not open during furnace firing.
- #9B1. Forced Air Furnace having a Power Close Replacement Air Damper (HAC-0x10-OPO) controlled by Timer Adaptor (TMADP-1102-TPX) and a 3-Way Switch. The Switch, in one position, allows the Timer Adaptor to turn on the Ventilation Fan, open the Replacement Air Damper and turn on the Furnace Fan simultaneously; the Ventilation Switch in the other position only turns on the Ventilation Fan. Replacement Air Damper does not open during Furnace firing.
- #9C. Same as #9B But has a Designated Ventilation Switch Which Functions Fully and Also an Additional 3-Way Switch to Control Ventilation Fan Only.
- #9C1. Same as #9B1 But has a Designated Ventilation Switch Which Functions Fully and Also an Additional 3-Way Switch to Control Ventilation Fan Only.
- #10. Forced 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) 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.
- #12. Forced 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 Replacement Air Damper opens before Ventilation Fan and Furnace Fan are allowed to run. Damper also opens during Furnace firing.
- #12A. Similar to #12 But Uses Adaptor (RADP-1102-TPX) for a Plug-In Ventilation Fan.
- #12B. Forced 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 Replacement Air Damper opens before Ventilation Fan and Furnace Fan are allowed to run. Damper does not open during Furnace firing.
- #12C. High 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) But Replacement Air Damper Does Not Open During Furnace Firing.