Specifically engineered for system clean-up after a compressor burnout or during initial installation

000 BTU Forsaire Counterflow Top Vent Furnaces

leading to erratic damper or valve positioning

which can lead to delayed ignition or hot spots on the heat exchanger

McDonnell & Miller FS4-3 Switch Refrigerant Specifically engineered for system clean-upFor contractors requiring reliable system protection, the McDonnell & Miller FS4 3 (Part Number 114400) is a heavy duty general purpose liquid flow switch designed to monitor flow in heating, cooling, and water process lines. This 1" NPT unit features a single pole, double throw (SPDT) configuration, allowing you to easily integrate signal lights, alarms, motors, or burners into the control circuit. Engineered to operate at a max pressure of 160 PSI