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Old 12-03-2010, 04:56 PM   #1
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is it ok to drain condensate to a below slab interior perimeter drain?


our only convenient place to run condensate drain lines for high-efficiency gas appliances will be into a below-slab interior perimeter drain I'm also installing. The thought is to leave a PVC stub when we repour the slab, and just clip the drain lines into that stub.

Otherwise, the city has blessed the perimeter drain and sump plan. Any technical problem running the condensate to that drain this way?

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Old 12-03-2010, 04:57 PM   #2
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is it ok to drain condensate to a below slab interior perimeter drain?


The copndensate from your furnace will be effectively pure water, so it can certainly be drained into the perimeter drain, assuming your town permits it.

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Old 12-03-2010, 05:20 PM   #3
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is it ok to drain condensate to a below slab interior perimeter drain?


Actually it is not pure. It is slightly acidic (like orange juice). Most cities don't mind it anymore in sewer drains as laundry soap is alkaline and the 2 neutralize each other ( I wuz told) but it does have some byproducts of combustion in it. Best to find out from the inspectors first. There used to be a neutralizer kit to put on the drain but you would have to find out from the furnace manufacturer. They were expensive and prone to plugging up and I would avoid them.
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