Copper Domestic Water Side Arm Heat Exchanger
Our sidearm has a 1-1/2" outer tube and is 26" long, this allows for a much easier installation between your hot water tank drain and the pressure relief valve. Overall the sidearm measures 30" long from end to end.
Because of the internal tube design you've actually got much more surface area than a traditional 48" sidearm. The problem with long sidearms is that 99% of the time you have to plumb from the top of the sidearm down so far to the pressure relief valve that you lose the efficiency of the thermal syphon.
50 Degree domestic water entering 130 Degree domestic water leaving 2.1 GPM through domestic side 8.5 GPM through furnace side 160 degree boiler water entering.
Using these above parameters, this sidearm produces 84,000 BTU - recovery time for a 50 gallon water heater is 15 MINUTES
Comes FULLY ASSEMLBED/PRE-SOLDERED and ready to install
PRESSURE TESTED to ensure a leak free unit.
1-1/2" copper on the outside w/ 1" copper sweat connections for the boiler input/output, 1-1/2" outside shell produces maximum efficiency with minimal pressure drop on boiler side. 3/4" sweat connections for the domestic water input/output.
Will work with ANY existing gas/oil/propane/electric hot water tank heater.