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Took me a while to figure out that although my pump shut down at 60 .....it would not kick on until the pressure had dropped below 40
left me with two options - raise the cut in pressure on the pump - or lower the sensitivity on the heater .....
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Isn't it the flow rate that the water heater monitors? Why would it care about the pressure?
Posts: 3,188
Threads: 216
Joined: Sep 2007
mine are pressure activated, flow rate and pressure related however.....
there is a pressure microswitch that activates the gas solenoid, downstream once it senses the required pressure.
the gas valve proportions the gas / water ratio to regulate temperature controlled by the temperature knob - limited to about a 45 degree rise
there is also a overheat switch that keeps the unit from scalding its user, should the flow rate drop below the ability of the gas valve to regulate temperature rise