janderson13
New Member
All,
I plan to install a Takagi tankless heater http://www.takagi.com/download/product_manuals/T-H3-DVOS-Installation-Manual.pdf
I'm confused as to what piping I should be using. I was planning to use ABS as the manual says that is ok as long as it can withstand 149 degrees F, is NOT foam core, and is ASTM D2661 compliant. I look at Home Depot and Lowes and they carry Charlotte ABS cellular core pipe (appears to be foam core), they say it has a heat rating of like 160 degrees F, and conforms to ASTM D2661. I realize that this appears to be foam core. I look at Charlotte's site and it says the pipe is only rated for 140 degrees F and is infact foam core, but that it is designed for venting applications.
So... I look at my furance venting that is done in ABS and it is using the same Charlotte ABS cellular core pipe - I'm starting to wonder if this is dangerous now? Or does the furnace allow for a lower specification of pipe?
I thought I would look for CPVC and they don't seem to carry that. I'll try Furgeson on Monday for the CPVP.
I'm wondering what other people are using and if I should replace my furnace pipe. The time to do it is now because we are finishing our basement.
Thanks!
Jeff
I plan to install a Takagi tankless heater http://www.takagi.com/download/product_manuals/T-H3-DVOS-Installation-Manual.pdf
I'm confused as to what piping I should be using. I was planning to use ABS as the manual says that is ok as long as it can withstand 149 degrees F, is NOT foam core, and is ASTM D2661 compliant. I look at Home Depot and Lowes and they carry Charlotte ABS cellular core pipe (appears to be foam core), they say it has a heat rating of like 160 degrees F, and conforms to ASTM D2661. I realize that this appears to be foam core. I look at Charlotte's site and it says the pipe is only rated for 140 degrees F and is infact foam core, but that it is designed for venting applications.
So... I look at my furance venting that is done in ABS and it is using the same Charlotte ABS cellular core pipe - I'm starting to wonder if this is dangerous now? Or does the furnace allow for a lower specification of pipe?
I thought I would look for CPVC and they don't seem to carry that. I'll try Furgeson on Monday for the CPVP.
I'm wondering what other people are using and if I should replace my furnace pipe. The time to do it is now because we are finishing our basement.
Thanks!
Jeff