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Old 10-18-2012, 01:51 PM   #1
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Furnace Condensation Drain


Hello,

We just had a new furnace installed and looks like the condensation pipe is draining into the ejector pit via trap drain on the floor and not the sump pump. I am curious if one pit is better than the other? We have an ejector pit since we have finished basement and would prefer not to use it as much.

Thanks

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Old 10-18-2012, 09:46 PM   #2
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Furnace Condensation Drain


If it were my basement, I would want the furnace to have its own condensate pump with built in safety switch. If the drains clog, it shots off the unit in-lieu-of flooding the basement.

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Old 10-18-2012, 11:16 PM   #3
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Furnace Condensation Drain


make sure it is draining into something which is only pvc. The liquid coming out of there will corrode about everything.
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Old 10-19-2012, 06:25 AM   #4
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Furnace Condensation Drain


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If it were my basement, I would want the furnace to have its own condensate pump with built in safety switch. If the drains clog, it shots off the unit in-lieu-of flooding the basement.
Interesting. I really like the idea of having this safety switch as it almost flooded my basement as the ejector pump wasn't installed. Where would the condensate pump eject the water to?
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Old 10-19-2012, 06:45 AM   #5
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Furnace Condensation Drain


The pump comes with some 1/4" clear hose that can be run to the outdoors. The 3/4" PVC from the furnace just dumps right into the pump.
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Old 10-20-2012, 07:37 PM   #6
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Furnace Condensation Drain


Patrick - do you have any recommendations on pump/safety switch? At minimum I would like to install a safety switch. Is this something you can get separately from the pump? Almost feels like it should come with my furnace (American Std silver). Many thanks!
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Old 10-20-2012, 08:18 PM   #7
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Furnace Condensation Drain


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Originally Posted by Patrick Eubanks View Post
If it were my basement, I would want the furnace to have its own condensate pump with built in safety switch. If the drains clog, it shots off the unit in-lieu-of flooding the basement.
Is the flooding of a basement with furnace condensate(5 gallons a day maybe) less damaging then the basement being flooded from a water pipe that froze and burst(5 gallons a minute or more) because the safety switch shut the heat off.
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Old 10-20-2012, 08:24 PM   #8
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Is the flooding of a basement with furnace condensate(5 gallons a day maybe) less damaging then the basement being flooded from a water pipe that froze and burst(5 gallons a minute or more) because the safety switch shut the heat off.
Very interesting point... So what's the best practice for condensate control in the basement or attic space? Thanks!
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Old 10-20-2012, 08:44 PM   #9
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A secondary drain pan, with its own drain line.
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Old 10-21-2012, 07:54 PM   #10
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If you will do a search online for condensate pumps you will find what your looking for. If disabling your furnace is a concern, most pumps come with built in terminals for an alarm to alert you of a failure. If the AHU is in the attic, I agree that a pan and pan switch ( building code here in NC) are your best options. From your post I assumed it wasnt able to maintain a fall without draining into your basement drains. If you can achieve a fall from a pan then that is your best option. If not, I would go with a pump.
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Old 10-22-2012, 07:01 AM   #11
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If you will do a search online for condensate pumps you will find what your looking for. If disabling your furnace is a concern, most pumps come with built in terminals for an alarm to alert you of a failure. If the AHU is in the attic, I agree that a pan and pan switch ( building code here in NC) are your best options. From your post I assumed it wasnt able to maintain a fall without draining into your basement drains. If you can achieve a fall from a pan then that is your best option. If not, I would go with a pump.
Got it. Yes, basement unit doesn't have a fall so pan won't be an option. Thank you!

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