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Ensure the detector is powered down and the sensing head has cooled before installation to avoid thermal damage or injury
This microprocessor-based control regulates the combustion sequence
and the take-apart design allows for streamlined servicing or valve flushing without the need to pump down the refrigeration circuit
Always check the manufacturer specifications for the appropriate conversion kit if field-modifying for liquid propane to ensure the regulator spring is correctly calibrated
minimizing service callbacks related to hard-start issues or HVAC start relay failure
Lennox 14W77 TXV 328140-751 Ensure the detector is poweredThe Lennox 14W77 is an OEM thermostatic expansion valve (TXV) engineered for high precision refrigerant metering in residential and light commercial R410A systems. Designed as a direct 100254 02 replacement, this valve features 3 8" x 1 2" ODF connections and is critical for maintaining the balance between liquid and vapor in the evaporator. By accurately regulating the refrigerant flow based on load demand, the 14W77 prevents compressor floodback and