and Coleman units when transitioning from natural gas to liquid propane

technicians should verify the integrity of the limit switches

extending service life in demanding hydronic setups

parallel circuit regulator

Mid-Point Grounding: Optimized for standard oil burner safety circuits and traditional ignition leads

Lennox 10W77 Expansion Valve 323080-701 and Coleman units when transitioningThe Lennox 10W77 Expansion Valve is a critical OEM R 22 expansion valve designed for precise refrigerant metering in residential and commercial cooling systems. This thermostatic expansion valve (TXV) includes an internal check valve, making it a direct replacement for heat pump applications and air conditioning units. Engineered by Parker for Lennox, the 10W77 regulates flow based on evaporator load to prevent slugging and optimize superheat levels.