How do you wire a furnace air damper?

Quote from the video:
Quote from Youtube video: So in the normal position not where there's any where the timer has changed position open the damper.

What controls fresh air damper?





FAVC Ventilation Control

The fresh air damper is typically controlled by the FAVC Ventilation Control to meet ASHRAE 62.2 and other fresh air ventilation codes and standards, but may also be used in a stand-alone application for either passive or fan-induced fresh air for ventilation or makeup air applications.

Can ecobee control fresh air damper?

If you own a whole-home Fresh Air Ventilator system or Fresh Air Ventilation Damper system, you can cool your home with the Free Cooling feature for the SmartThermostat with voice control, ecobee4, and ecobee3 thermostats.

When should a fresh air damper open?

(2) In manual damper control systems, someone should open the damper when the building is occupied (to some pre-arranged set point) and then close the damper when the building is unoccupied and the OA dew point temperature exceeds 55F.

Where is an automatic vent damper installed?





It is placed in the flue pipe between the heating unit and the chimney to block the passage of heat after the unit has been shut down. By preventing the escape of heat during the “off” cycle, a vent damper can also increase the furnace’s operating efficiency by minimizing “cold” starts.

How do I know if my ventilation damper is open or closed?

If you are looking at a duct that is coming off the furnace and going straight up like it is going to the upstairs, and the wing is in the same direction as the duct, it is open. If the wing is in the opposite or vertical position to the ductwork, then the damper is closed.

Do I need a fresh air intake on my furnace?

Furnaces need a fresh air intake because they are typically designed to push air out of the home while functioning, no matter the type installed. With the fresh air intake installed, you can ensure that the furnace’s combustion will not reduce your home’s air quality.

How does a fresh air ventilation system work?

Exhaust ventilation systems work by depressurizing your home. The system exhausts air from the house while make-up air infiltrates through leaks in the building shell and through intentional, passive vents. Exhaust ventilation systems are most appropriate for cold climates.

How do I turn off my fresh air intake HVAC?



Fresh air intake flows through the damper of the AC. It is usually fixed in the room’s attic during installation, and it comes with a cover. To turn off fresh air, simply slide the dampers cover over the opening.

How do I test my HVAC dampers?

Put the damper into an open position and check the registers once again to see if the airflow starts. If the damper is closed and you are feeling low airflow, or none at all, it is most likely a bad damper. For the automatic control damper, turn your HVAC system on. Check for airflow in the registers.

Do I need a damper on fresh air intake?

Typically, a fresh air intake is operated using a damper. First, locate the intake, which is usually placed in the attic, but it may also be ducted to the central air handler’s return side. Avoid covering an intake with a drape or curtain or stuffing it with insulation or rags.

How do you adjust automatic dampers?



To properly adjust your HVAC dampers, follow these steps:

  1. Turn your fan to the ON position. …
  2. Open every damper all the way. …
  3. Open every register in every room of your house. …
  4. Determine which duct serves which rooms. …
  5. Make initial adjustments. …
  6. Monitor and adjust again. …
  7. Label the damper position.

What are the different types of dampers?

Types of Dampers in HVAC

  • Introduction to Different Types of Dampers. …
  • Butterfly Flat Dish Damper. …
  • Blade Dampers. …
  • Guillotine Dampers. …
  • Louver Dampers. …
  • Inlet Vane Dampers.


How do you replace AC damper?

How Do You Replace an HVAC Damper

  1. Find the existing dampers in the ductwork. You may have already done this when assessing your dampers. …
  2. Open the ductwork up. …
  3. Remove the damper from the ductwork. …
  4. If you want a more secure bond, break out the mastic. …
  5. Insert the new damper. …
  6. Seal it all up! …
  7. Try it out!



Where are HVAC dampers located?

They are located a few feet from the base of the unit, on every air duct run, and away from the air handler.

How long do HVAC dampers last?

around 20 years

How Long Do HVAC Dampers Last? The quality of the equipment, how frequently you run your HVAC unit, and if you follow regular maintenance schedules can all affect the lifespan of your HVAC components. Dampers can last around 20 years with proper maintenance.

How do you find dampers in ductwork?



Those two situations aside, locating your dampers should be pretty straightforward. Go to your furnace (be it in a utility room, crawl space, basement, etc.) and look at the main duct trunks radiating off the furnace. Dampers are almost always within 2-6 feet of the main trunk.

Is it OK to close HVAC dampers?

Bottom line: You probably shouldn’t close your air supply vents. Excessive static pressure inside an HVAC system is never a good thing. Closing too many air supply dampers could put you in the static pressure “danger zone.”

Should vent on side of furnace be open or closed?

Keep vents open. Yes, even in rooms you don’t use! The more vents you close and the longer you keep them closed, the more likely you’ll experience the problems above. Leaving vents open will also save you more money on heating bills and furnace repairs.

Is it OK to close vents in unused rooms?

When you close the air vents in unused rooms, it’s much easier for the heat exchanger to crack, which can release deadly carbon monoxide into the home. Carbon monoxide is a tasteless, colorless and odorless gas that’s undetectable to humans.