timer box wiring for pentair ch 250 milivolt


New member
Jun 21, 2010
I am attempting to switch an old heater with a pentair ch250 natural gas milivolt. The qustion I have I followed the wire from my old heater to my automatic timer box. The gas valve and temperature setting knob are tied split together leading to the timer box. I do not know where to attach the wire from the timer to the pentair heater . I am thinking it would tie into the orange wire going to the gas valve Any help would be appeciated

Pool Clown

In The Industry
Sep 5, 2008
Silicon Valley, CA
The wire from the timer is probably a fireman's switch. there should be a labeled wire on the heater where to splice into. You'll have to look around . Check the manual for possible splice location.

Other Threads of Interest