It should be installed in a protected control cabinet or a location away from direct weather and contaminated atmospheres to protect the internal circuitry

Simplified Inventory: Pairing a single T2/TE2 valve body with various orifices allows for fast capacity adjustments in the field

the unit maintains a significant 7

ensuring a gas-tight seal that prevents coolant seepage and combustion gas leakage

Lennox 57M66 Pressure Switch 340793-762 It should be installed inThe 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