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it handles non-corrosive refrigerants including R-22
Technicians rely on the Antunes Model JD-2 series for its repeatable set points and durable diaphragm design
or a blower motor that will not turn off even when the thermostat is disconnected
It acts as a lockout mechanism to manage the transition between the primary heat pump and auxiliary electric or gas heat based on outdoor ambient temperature
Johnson Controls T-4003-203 Thermostat Els PW 17895 it handles non-corrosive refrigerants includingThe Johnson Controls T 4003 203 is a high volume output submaster pneumatic thermostat engineered for precise proportional control in complex HVAC systems. Designed for reverse acting operation, this unit utilizes horizontal mounting and is specifically calibrated for applications where a remote master controller resets the setpoint based on external variables like outdoor air temperature. With a massive 400 SCIM flow capacity and a low 20 SCIM air
US$ 535.00
US$ 455.00
US$ 175.00