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Miller CMF80-AG

Posted: Thu Dec 09, 2010 11:40 am
by arctic tundra
I've always owned a home. Now I've been forced to down size. I have a Miller CMF80 nat. gas furnace. I've fixed most all duct work leaks but... At the base of the unit is an area aprox. 6" X 12" that lets in a very solid and steady flow of direct outside air. Now please forgive my ignorance, but, this opening should not be here, is this a true statement? This unit I believe brings in makeup air through the door & filter not from outside. should I patch this opening. I feel there was another unit there years ago and this was never properly attended to. please give me your opinion.

Re: Miller CMF80-AG

Posted: Sun Dec 12, 2010 1:43 am
by Robert
Hi,

Check and see if you have a 2 pipe flue/roof jack. If so, your combustion air comes from outer pipe.

IF not, it may be bringing it in through that opening. In MH's, all gas furnaces must be sealed and combustion air be brought in from outside the home.


Thanks,
Robert

Re: Miller CMF80-AG

Posted: Mon Dec 13, 2010 9:19 am
by arctic tundra
Robert, thanks ever so much as I am ever so humbly grateful.

Re: Miller CMF80-AG

Posted: Mon Dec 13, 2010 2:09 pm
by Robert
Hi,

You're very welcome, happy to help.


Take care and best wishes,
Robert