Wiring Diagram For Weil Mclain Boiler. Occurs when the communication is lost from the control module to the display. My weil McLain cg pfg-5 gas boiler wont cycle off.
Ive even disconnected the thermostat two wires going to g and r 24 vac. Weil mclain cgx c wire options and eg peg series 5 steam boiler piping diagram i have a cga gas fired 30 thru 65 mcclain wont kick on page 1 wiring egh 75 control 2 lgb 7 user manual g. According to the CGa-010 wiring diagram youll want to connect the C wire for the thermostat to the terminal pointed to in this image.
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