chimney size question

Questions about repairs and parts for Coleman furnaces, air conditioners and heat pumps for manufactured homes. Click here for Coleman parts.

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digifoss
Posts: 13
Joined: Mon Nov 17, 2014 11:42 am

Wed Nov 26, 2014 11:28 am

Replacing a 7610-859 with a 7956C856. Will my old chimney / exhaust pipe work on the new heater ? The vent gas outlet size looks about 5 inches on both and the bigger fresh air inlet size looks about 8 inches on both. Planning on doing this today and hoping I can reuse the chimney / roof jack and not have to replace it.


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Greg
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Wed Nov 26, 2014 7:39 pm

If it is in good shape I don't think there should be a problem using the old on as long as it is the same size pipe.

Greg
"If I can't fix it, I can screw it up so bad no one else can either."

digifoss
Posts: 13
Joined: Mon Nov 17, 2014 11:42 am

Wed Nov 26, 2014 10:01 pm

Got the heater changed out today, finally. Still on it's first cycle right now but is heating good. I re-used my old chimney. The center pipe was still round and in good shape and fit good and snug on the exhaust riser on the heater. The outer pipe was a little bent out of round - was already that way. Old heater had a piece of metal flashing wrapped around the outer pipe and taped with hi-temp aluminum tape to the top of the heater and the flashing wrap so I did the same but I took better care to make sure it was sealed good all the way around top and bottom. So far so good.

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