or carbon buildup on the sensor

ensure you are adjusting the gas valve regulator to meet the specific gravity requirements of local natural gas supplies

Engineered with a 65-inch outside circumference and a BX section profile

and Payne outdoor units and rooftop systems

The Watts 0886010 Repair Kit

Markel 57640003 Limit 320788-703 or carbon buildup on theThe Markel 57640003 Limit Control is a critical safety component engineered for high performance thermal regulation in industrial and commercial heating systems. This L300F auto reset limit switch is specifically designed for 5100 series unit heaters ranging from 7kW to 10kW. Utilizing a sensitive capillary tube and bimetal disc, the 57640003 monitors temperatures near the heat exchanger and provides a reliable break in the electrical circuit when