Just bought a Fire Chief Outside Furnance, Can't get the blower to blow very good.

[Swilmes]

Hello-
Installed through our heating ducts per a heating and cooling guy. The house is heating ok (not as well as we thought) but not much force coming through vents. Any suggestion for how to get the air to come through. We also have a propane furnance that came with the house. Should we use the furnance bower or not? Customer service for Fire Chief not open on weekends so no help there. Thanks for any help!

 

[laynes69]

What model do you have and whats your house size? All the ducting should be well insulated to keep all the heat from escaping. Your outdoor unit should have its own blower, and running the indoor blower on the LP will complicate things and make it worse. Is there a backdraft damper installed on the main central furnace in the home? Is the return tied into the returns in the home? I guess its hard to say whats going on without some details of the setup. We use an indoor woodfurnace which is basically the same thing. If your ducting is too big or your duct run is too long that will lower the flow of air to the home. Also if there is a multi speed blower, make sure the blower is at a high setting and that the temperature controls on the woodfurnace is correct.

 

[Swilmes]

where would the back draft damper be located on the home furnace.

 

[Swilmes]

where would the back draft damper be located on the home furnace.

our house is 2300 square foot. the model of stove is a fire cheif 2200 outside furnace

 

[laynes69]

Normally, a damper would be installed in the plenum of the central furnace, or right after in the main trunk. Without that, the pressure will not build into the ductwork causing little to no flow. Its something that alot of people overlook, but is extremely important. Feel the return where it connects to the central furnace. If its warm you are backfeeding through the furnace. With a 1800 cfm blower on the firecheif, I am willing to bet thats the problem. If you have a coil for a heatpump or air, the damper should be placed after that so the coil isn't damaged from heat.