Orifice sizing is determined by the altitude and the BTU rating of the individual burner

or the outdoor unit failing to engage despite receiving 24V from the board

This is a 120V AC component and should only be used in systems designed for line-voltage ignition sequences

Compatible with high-performance Schneider Electric pneumatic controls and legacy Barber Colman thermostats

If the control board does not receive the rectified DC signal within the ignition window

Maxitrol 325-5L-3/4-12A39 Regulator Els PW 17895 Orifice sizing is determined byThe Maxitrol 325 5L 3 4 12A39 is a high performance 3 4" line pressure regulator engineered for residential and commercial systems requiring precise natural gas pressure regulation. This lever acting model is designed to handle a maximum inlet pressure of 2 PSI while providing a stable outlet range of 7 11 inches water column. With its positive dead end lock up capability and factory installed 12A39 vent limiter, this unit ensures safety by preventing