Since there's no damper or shut off valve is there anything or anyway to keep the outside unconditioned air from coming into the fireplace/house when there is no fire?
If this kit is installed with certain Superior fireplaces that have functional outside air control, then you would be able to fully close the outside air. With other barometric models, the outside air connection is covered with a flap that would only open to allow air into the combustion chamber if needed. In either case, no air would be allowed to enter the combustion chamber.
What does this provide air to and what is its advantage or necessity?
An outside air kit would only have to be purchased when required by local codes. The benefit of installing outside air is to draw fresh air from the outdoors instead of relying entirely on oxygen from the living space for combustion.
If the exterior wall is 5 feet from the fireplace can I still install the air kit?
Yes, however the outside air kit ducting would have to be extended for your purposes, as the standard duct length would not be sufficient. Aluminum dryer ducting is able to be used to extend the air kit if needed.
Submitted by:Collin C. - NFI Master Hearth Professional on November 25, 2013
This item is designed to draw outside air in through an exterior wall and supply it to your appliance. The flex venting will pass through the wall to the appliance. Only the termination would be located outside.
Submitted by:Kevin E. - Fireplace Specialist on January 14, 2013