For technicians troubleshooting chiller fault codes or "unit won\'t start" conditions

Using it with higher-pressure refrigerants like R-410A may exceed the 500 psi limit and damage the internal calibration

verify the model requirements for your specific air handler series

Key Benefits Optimized Compatibility: Designed specifically for Reznor UDAS

the Evergreen VS series is pre-programmed to recognize the system's communication signals

Lennox 33W52 TXV 320819-301 For technicians troubleshooting chiller faultThe Lennox 33W52 is a factory authorized thermostatic expansion valve (TXV) engineered for high capacity 6 ton HVAC systems. As a critical liquid refrigerant metering device, this valve features a 3 8" inlet and 1 2" ODF outlet, providing the precise flow control necessary to maintain optimal superheat across varying evaporator loads. Designed specifically for R 410A refrigeration systems, the 33W52 utilizes a 30 inch capillary tube and an external