Nov 03, 2020 · To be clear, the heat pump may have control contacts that can bring on the boiler if the heat pump needs assistance. It can be a little complex. Some simply 'hand over' to the boiler, other systems can run in parallel. I tend to think of going maybe 1/2 the normal sizing. A small ASHP would mean it can tick steadily away for much of the Learn More
Nti boiler codes. The instructions detailed in this document supersede any and all previous instructions provided by NTI, written or otherwise. 8 kPa] Field conversion from Natural Gas (factory) to PropaneThe FTV is a high-efficiency, wall-hung boiler equipped with a vertical fire tube heat exchanger made of industry proven 439 stainless steel.Learn More