d1yguy
New Member
Hi,
I am prepping to install a "power pipe" for drain water heat recovery. To get the longest (most efficient) power pipe, I would like to put a double-y fitting on my stack in place of the higher single-wye fitting, and then connect both 2" drains to that higher fitting, giving me about an extra 10". Here's a pic of the existing situation (sorry the pic is sideways - the 3" copper pipe with the 2 wye fittings on it is vertical):
Anyone know if this is permitted by code? Is a double-wye the best option? If I do use some double fitting, do I need to worry about changing the height of the 2" abs connection to the stack? - I mean if it connects to the stack at a higher point, any chance I could run into problems with the fixture?
Thanks in advance,
Matt
I am prepping to install a "power pipe" for drain water heat recovery. To get the longest (most efficient) power pipe, I would like to put a double-y fitting on my stack in place of the higher single-wye fitting, and then connect both 2" drains to that higher fitting, giving me about an extra 10". Here's a pic of the existing situation (sorry the pic is sideways - the 3" copper pipe with the 2 wye fittings on it is vertical):
Anyone know if this is permitted by code? Is a double-wye the best option? If I do use some double fitting, do I need to worry about changing the height of the 2" abs connection to the stack? - I mean if it connects to the stack at a higher point, any chance I could run into problems with the fixture?
Thanks in advance,
Matt
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