I have just fitted a variable speed drive to my filter pump. My problem is that I can only reduce the pump speed slightly before the heater flow switch operates. I was wondering whether the flow switch is necessary and what it's purpose is?
My pool heater consists of an oil fired boiler pumping hot water through the primary side of a heat exchanger with the filter pump pushing the pool water through the secondary side of the heat exchanger.
I cannot see any problem if the pool water was flowing very slowly (or even static) in the heat exchanger because the boiler would just cut out on its own thermostat.
Can anyone see any potential problem with bypassing the flow switch?
My pool heater consists of an oil fired boiler pumping hot water through the primary side of a heat exchanger with the filter pump pushing the pool water through the secondary side of the heat exchanger.
I cannot see any problem if the pool water was flowing very slowly (or even static) in the heat exchanger because the boiler would just cut out on its own thermostat.
Can anyone see any potential problem with bypassing the flow switch?