it is performing its intended safety function to prevent crack formation in the heat exchanger

this orifice provides the exact BTU input specified by the manufacturer for optimal system thermal efficiency

What causes a 170 degree limit switch to trip

providing a critical thermal interface between the system fluid and the controller

and MM-2/3 systems

Parker AFPH05 Coil it is performing its intendedThe Parker AFPH05 Coil is a professional grade, 120V replacement solenoid coil engineered for Parker Gold Ring solenoid valves and Skinner valves. This OEM 6 watt coil is designed for continuous duty service, allowing for indefinite energization in demanding industrial HVACR and fluid control applications without risk of thermal burnout. Featuring a DIN 43650 Form A connection, this epoxy encapsulated unit provides a secure, vibration resistant