if it's a 90 % furnace you may have a flue or intake air problem or a bad pressure switch make sure you are venting the flue gases and the fresh air intake is clear
if it is instaled corectly, the handle which controlls the flue goes in the same direction as the plate inside the chimney. so if the handle is horizontal, the flue is closed. if the handle is verticle, the flue is open. you shouldn't have to close the flue all the way, at most it should be at a 60degree angle to allow smoke to leave, while retaining heat. open the flue all the way when you open the door to the stove so that the smoke will go out the chimney and not into your face and house. but close the flue back down some to keep in the heat and not waste firewood warmth on the air outside.
if you are talking a stove flue [free standing] the handle on the flue will indicate open or closed. if handle is horizontal flue is closed. if vertical flue is open. if you mean fireplace flue usually pushing flue handle to rear or back of fireplace will open it and pulling it toward you will close it. you can check by moving handle slowly while looking with flashlight up in the chimney. be careful as soot can come down and out if you get too aggresive.
No. The flue must be open to allow the carbon monoxide to escape from the house.
It will not -- It must be wind comming down your flue and putting it out
A flue liner protects the bricks or masonry that makes your chimney for your fireplace. It can also protect any wood that it is close to. Flex King offers a flue liner for around $400.00.
the flue should be opened
It needs to be open when lighting a fire. Close it when not in use. If you have any doubt which is which, look up the flue with a flashlight.
Yes- but open before use.
Just light a match and hold it near the flue. If the the air is going up the chimney you will see the flame drawn in that direction.
No. Closing the firplace flue will not make any difference in damage to you home. Closing it will only waste time better spent taking cover.
It is necessary to keep the button depressed for about one minute after lighting the pilot light, to heat an element that keeps the pilot valve open. If the pilot light does not continue burning after the button has been released, you should turn the control to the "off" position and call a service technician or your gas supplier. Normally you have to hold the "pilot" button down for TWO minutes and then release if it doesn't maintain the pilot call a Licensed plumber NOT A TECH and ask to see the license for your protection and the LMP will replace the thermo couple and check to the flue for proper up draft and make sure you have complete combustion Many contractors trying to beat licensing laws say "we are sending over a tech" as this is dishonesty of the highest caliper because they do not advertise under "tech" in the phone books or Internet