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Yes he suspected that the zone valve may have been faulted due to the high temperature of the water with the boiler always calling for hot water, it was a precaution since we had the boiler out of service. The boiler is the only thing with a recirculation pump and I don't have an air conditioner...

Update : brought in the plumber who originally installed the hot water heater and boiler, he replaced the thermostat in the hot water heater. He also changed the zone valve for the heat even though it wasn't calling for heat the water in the pipe was getting so hot it traveled up the line making...

Jwwing, thank you for your reply and sorry for taking so long getting back. This is what i found on the hot water heater. How Phase III Works When the Phase III thermostat in the inner tank calls for heat, the boiler and circulator start. Boiler water is circulated around the outer tank and...

set up : triangletube phase 3 water heater , peerless oil boiler. The recirculating pump on my boiler is constantly running and the Honeywell zone valve that goes to the domestic hot water is always in the open postion , if I disconnect the power from the hot water heater the recirculating pump...