Pump being a little older and being stored in winter in the Northeast is not as strong as it is of course as new.
Pressure adjustment on the pump itself only works so far.
Turn allen key screw clockwise to boost pressure, however once tap or device is used pressure will drop and Hotwater will still shut off let alone the tweaking between pump cycling on and not cycling off.
This is all about water throughput from tank to pump to hotwater supply.
An allen key is required on the center of the pump flange or pressure sensor.
Removed as many flow restriction from tank to pump to hotwater supply.
- Remove 90 deg elbows off the pump
-Remove tank water shutoff and put in a flow thru PEX ball valve and not OEM Thor shut off that restricts water flow.
I am going to replace piping from tank to water pump filter with 3/4 PEX from 1/2" PEX to reduce resistance to the pump.
This would have been the best solution in my estimate and the use of 45 deg fittings only if absolutely necessary.
Of course a stronger pump would have compensated for the fact this pump in its age with the water restriction is sized perfectly and when pump becomes older, may require modifications at the pump inlet side or outlet to the devices to maximum flow from the pump.
As doing all this, not that difficult the pump is working fine and the pump will as a result be working more efficiently.
Another Thor improvement over factory install.