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Posted by daytona° on January 23, 2007, 11:54 am
and runs out as waste water
>
>>bubbabubbs@yahoo.com wrote:
>>> The unit in question is Goodman GMV9509050XBA gas furnace (95% eff.,
>>> 90,000 BTU.)
>>> It says in the Installation Instructions (page 7, Location Requirements
>>> & Considerations) that the following must be observed:
>>>
>>> "The temperature of the return air entering the furnace is between 55F
>>> and 100F when the furnace is heating."
>>>
>>> I am curious why the 55F requirement. I mean, when I'm not in the
>>> house, I would like to set the temp as low as possible in order to save
>>> on my heating bill. I think I could otherwise set it as low as 45-50F
>>> and still keep the water pipes from freezing. But I wonder why I'm not
>>> supposed to go below 55F. What could happen? Could the unit get damaged
>>> and why?
>>>
>>> Thanks
>>>
>>> P.S. I'm in the Denver, CO area - 5,300 ft altitude, if that matters.
>>>
>>Hi,
>>I am just guessing. If return air temp. is to low it may not produce
>>warm enough air. Air is passing thru the heat exchanger at constant
>>speed and think law of physics.
>
> Ertttttttt! Wrong answer Tony. Stick to what you do because it sure
> isnt this.
> Problem is possibility of condensation in the
> furnace.......................in the PRIMARY!
> Bubba
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