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also identified by model LF174A-1 1/2-150
failure of the boiler to proceed past the pre-purge cycle
the KH45LE120 ensures exact fitment and pressure drop specifications are met without compromising system efficiency
This component is compatible with 175 though 350 MBH air handlers
Corrosion Resistance: Manufactured from high-grade materials to resist the acidic byproduct of the combensation process
Lennox 12J35 Expansion Valve 320720-756 also identified by model LF174A-1The Lennox 12J35 Expansion Valve is a precision engineered NXT thermostatic expansion valve specifically calibrated for HVAC systems in the 3 to 3. 5 ton capacity range. Designed for indoor evaporator coils, this TXV utilizes a responsive sensing bulb to modulate refrigerant flow in real time, maintaining precise static superheat across varying thermal loads. By preventing liquid slugging and evaporator starvation, the 12J35 ensures the compressor
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