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Where do I install the recirc pump on a combi core water heater?

I have a Bradford and White Combi Core water heater. The spiral part provides hot water for heat, and the tank provides potable water. The heat side needs around 160 degree water. The recirc pump ...
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Why is there no water pressure after turning main off then back on?

Came home after work to a water leak, a coupling had corroded and come apart on the hot water line. Turned water main off and repaired the leak but when I turned the water back on I had no hot or ...
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33 views

How can I determine if a valve complies to MSS?

How to know if the valve complies to Manufacturers Standardization Society (MSS) or not? I want to approve a valve for an HVAC project, but I don't know how.