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Martin Cooney

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I have a heat pump water heater with a thermostatic mixing valve, expansion tank, vacuum breaker valve and a recirculating pump. My system does not have a dedicated return line so APCOM BPV Aqua-Flash Bypass Pressure Relief Valves are installed at sinks at the end of each circuit.

Placement of the recirculating pump is a riddle in my mind. I have searched the web, but most systems are using dedicated return lines. Where is the recirculating pump normally placed in relation to the thermostatic bypass valve?
Hey, wait a minute.

This is awkward, but...

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