A7 AirTap install (ASHP hot water heater)

Xringer · 06-29-12, 11:46 PM

My problem now is figuring out Where to install a tank..
This evening, I went down and looked at the back of my boiler.
There a 3/4" nipple sticking out (on the rear left side) that has a T&P valve on it.

I think it would be a quick install, if I skipped buying a tank (HW heater).
Just build a little shelf for the A7, beside the boiler and run the HX loop into the 3/4" hole.
I can install the T&P elsewhere.

If the HX loop was fed into the rear left side (3/4 from bottom), it would intermingle with existing domestic HW HX coil..

The water jacket hold 72 gallons of blackish water..

The main problem with the idea is the thin insulation, and leakage up the chimney..

06-29-12, 11:46 PM	#11
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	My problem now is figuring out Where to install a tank.. This evening, I went down and looked at the back of my boiler. There a 3/4" nipple sticking out (on the rear left side) that has a T&P valve on it. I think it would be a quick install, if I skipped buying a tank (HW heater). Just build a little shelf for the A7, beside the boiler and run the HX loop into the 3/4" hole. I can install the T&P elsewhere. If the HX loop was fed into the rear left side (3/4 from bottom), it would intermingle with existing domestic HW HX coil.. The water jacket hold 72 gallons of blackish water.. The main problem with the idea is the thin insulation, and leakage up the chimney.. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..