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Can this be used for water lines
Can I measure flame current on this board
5-ton furnace and air handler models
completing the circuit to the burner once the preheater has reached the required thermal set point
Precision Balanced: Factory balancing minimizes shaft runout and audible resonance during high-RPM operation
Lennox 57M66 Pressure Switch 322838-752 Can this be used forThe Lennox 57M66 Pressure Switch is a critical safety component designed for precise combustion air proving in high efficiency gas furnaces. Factory calibrated to actuate at 1. 41" WC, this Single Pole Single Throw (SPST) switch ensures the inducer motor is generating sufficient static pressure to vent flue gases safely before allowing the ignition sequence to proceed. As a genuine OEM replacement part, it maintains the exact specifications required