A licensed HVAC technician must perform the swap and conduct a combustion analysis to ensure the system is operating safely

7B proportional control switch that provides a 135-ohm potentiometer signal

Industrial Build Quality: Encapsulated solid-state circuitry protects against vibration and moisture in boiler rooms and mechanical pits

Operating at 208-230V with a fixed speed of 1300 RPM

featuring a robust Parker valve diaphragm and plunger assembly designed to restore tight shut-off and precise flow control

Johnson Controls A-4423-1 Air Dryer THPU32HP7Y A licensed HVAC technician mustThe Johnson Controls A 4423 1 Air Dryer is a critical component for maintaining the integrity of pneumatic control systems by effectively removing moisture and preventing line freeze ups. This refrigerated air dryer utilizes a hermetically sealed compressor and R 134a refrigerant to provide consistent compressed air treatment for building automation and HVAC controls. Operating on a standard 115 Vac power supply, it is designed for a 125 psig maximum