The unit includes an integrated SPST auxiliary end switch (rated at 50 VA pilot duty) to signal the circulator pump or boiler when the valve is fully open

With a 7/8" suction and 1/2" discharge stub connection

This natural gas thermostat kit

Key Benefits OEM Compatibility: Exact replacement for Sterling part 11261R06830004 and legacy kit 261R06830004

the burners lighting and then immediately extinguishing (flame sense failure)

Liebert 172147P2S Crankcase Heater 318518-761 The unit includes an integratedThe Liebert 172147P2S Crankcase Heater is a critical OEM replacement part engineered for high performance precision cooling systems. Operating at 480V with a 90W output, this band style heater is designed to wrap securely around the compressor base, maintaining optimal oil temperature during the off cycle. By ensuring that the lubricant remains warmer than the rest of the system, it effectively prevents liquid refrigerant migration into the crankcase.