How Open Should A Fireplace Flue Be. It’s recommended by the us fire administration (usfa) that fireplace glass doors should always be open when having a fire. If a fire is lit and the damper is closed, the gas and debris have nowhere to go but into the house, causing a smoky situation.
It’s recommended by the us fire administration (usfa) that fireplace glass doors should always be open when having a fire. If the flue is open, the smoke will go out of the chimney without any problem. Once the flue is open, place.
Hooker the effective flue area (efa) of square or rectangular flues omits the area of the corners.
Once the flue is open, place. The damper should always be fully open before lighting a fire and when the fireplace is in use. Hereof, can i run my gas fireplace with the flue closed? Most people reopen an old fireplace so that they can restore it, bringing it back to life as a focal point of the room.