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praprade 09-19-2010 06:54 PM

Can I vent furnace through window?
 
My furnace would shut down after 5-10 seconds and ignite again after 10-20 seconds and than shut down again,so I thought my chimney might be blocked . To check if that is the case I disconnected exhaust pipe from chimney liner and let is went in the basement for a few minutes . It was working fine so now since I have no money to get somebody to clear the chimney or change liner I would like to know if it would be mistake to just buy pipe and went furnace out of the house at the basement level instead through the chimney .It is keeprite forced air furnace but I don't know how old as it was in the house when I bought it 4 years ago .

Tom Struble 09-19-2010 06:56 PM

:huh:yikes

DangerMouse 09-19-2010 07:16 PM

Clean your chimney.... alive is better than dead.

DM

newtech 09-19-2010 07:35 PM

Quote:

Originally Posted by praprade (Post 503938)
My furnace would shut down after 5-10 seconds and ignite again after 10-20 seconds and than shut down again,so I thought my chimney might be blocked . To check if that is the case I disconnected exhaust pipe from chimney liner and let is went in the basement for a few minutes . It was working fine so now since I have no money to get somebody to clear the chimney or change liner I would like to know if it would be mistake to just buy pipe and went furnace out of the house at the basement level instead through the chimney .It is keeprite forced air furnace but I don't know how old as it was in the house when I bought it 4 years ago .


Is you hot water heater connected to the same liner or chimney? (gas fired) If so it will also be a major problem as to flue gas going into the house....


You need to get the liner or chimney checked ASAP.....


And NO you can't vent it out the window:no:

hvaclover 09-19-2010 08:00 PM

Probably a birds nest in the liner. With a fiends help and a little brain storming
you can figure it out.

Before you do anything check your flue pipe from the furnace to the liner. Might have a bird or small animal in it.

Also the blockage, if in the liner, could be with in reach.

shin a light up into a line and check with a mirror. You might be able to reach it.

praprade 09-19-2010 08:06 PM

Quote:

Originally Posted by newtech (Post 503966)
Is you hot water heater connected to the same liner or chimney? (gas fired) If so it will also be a major problem as to flue gas going into the house....


You need to get the liner or chimney checked ASAP.....


And NO you can't vent it out the window:no:

No ,gas heater exhaust on it's own through the wall .
English is not my language so maybe I wrote something wrong in my post .
If I now get it right ..the question is ... can I exhaust flue gas through the wall out of the house horizontal or for some reason has to go vertical through the chimney on the top of the house .
To make it more clear ...I helped my brother take his chimney down when he was selling his house as home inspector said it was in bad shape...meaning he didn't need chimney for his furnace because flue gas was exhausting at the side of the house at basement level.
So can you do that for any gas furnace or for some reason mine being I am guessing older type has to exhaust through the chimney at the top of the house ?

yuri 09-19-2010 08:53 PM

You cannot exhaust it into anything but a proper chimney. A high efficiency furnace with plastic vent pipes coming out of it can go thru the wall of a house. Any furnace with a metal vent needs a proper chimney. The problem may not be the chimney. Your furnace exhaust fan may be slowing down or the pressure switch faulty. Need a skilled tech with a manometer to find that out. Removing the pipe decreases the load on it and may fool it into working. Check the chimney for blockage. Remove the vent pipe at the top of the furnace and look inside for a dead bird.

Red Squirrel 09-19-2010 09:51 PM

Does it have an inducer motor? I suppose you *could*, but as far as code goes probably not allowed. Either way you are pulling air out of the house without replacing it. I like high efficiency furnaces for the fact they have an intake, so no need to worry about creating a vacuum. Now if they only made hot water tanks with an intake as well.

hvac benny 09-19-2010 10:37 PM

Quote:

Originally Posted by Red Squirrel (Post 504030)
Now if they only made hot water tanks with an intake as well.

They do. I can't remember what brand, but I have installed one that used aluminum flex intake and exhaust, exactly like a fireplace.
:thumbup:

hvaclover 09-21-2010 02:41 AM

Quote:

Originally Posted by Red Squirrel (Post 504030)
yvacuum. Now if they only made hot water tanks with an intake as well.

thy are called direct fire WHs



http://www.hotwaterexpress.com/Images2006/sfpdv4.jpgWho love's 'ya RED?????

beenthere 09-21-2010 03:01 AM

Quote:

Originally Posted by Red Squirrel (Post 504030)
Does it have an inducer motor? I suppose you *could*, but as far as code goes probably not allowed. Either way you are pulling air out of the house without replacing it. I like high efficiency furnaces for the fact they have an intake, so no need to worry about creating a vacuum. Now if they only made hot water tanks with an intake as well.

The inducer of an 80% furnace is not a blower. So it requires a power venter to be added to vent it through the wall. The furnaces flue, is a negative pressure flue.

90% furnaces, the inducer is also a blower, and the flue pipe is a positive pressure flue.

beenthere 09-21-2010 03:02 AM

To the OP:

Nope. Can't vent it out the window like you want.
You can probably get your chimney cleaned for less then what a power venter will cost.

steveel 09-21-2010 06:26 AM

If you can't clear the blockage TODAY I would at LEAST buy a couple carbon monoxide detectors and the batteries to run them. I agree with other poster that alive is much better than dead. You are talking about a "jury-rig", to use the slang phrase. Even if you get the pipe out the window, you may create condensation problems or worse yet potentially fatal backdrafting into the house. Stick a bright light into the bottom of your chimney, and a mirror. What do you see?

AllanJ 09-22-2010 06:46 AM

If you open the basement window and reconnect the furnace to the old chimney, does the furnace work okay?

The furnace needs makeup air aka combustion air, cubic foot for cubic foot matching the exhaust air out the chimney. If you improved the doors and windows and insulation in your house, the furnace may no longer be getting enough through the usual cracks and imperfections in the exterior door frames and window frames.

praprade 09-22-2010 07:27 AM

Quote:

Originally Posted by AllanJ (Post 505381)
If you open the basement window and reconnect the furnace to the old chimney, does the furnace work okay?

The furnace needs makeup air aka combustion air, cubic foot for cubic foot matching the exhaust air out the chimney. If you improved the doors and windows and insulation in your house, the furnace may no longer be getting enough through the usual cracks and imperfections in the exterior door frames and window frames.

No ,I had window open, didn't work.
Anyways I removed front panel and found sticker on inside wall with "Horizontal went installation instruction" . Would that be instruction for flue went (meaning I can get it out of the window) or there is something else on furnace that this applies to ?


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