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Lacquer sheets stacked — description and returns below the cascade board.
In a normal operating state
Key Benefits OEM Compatibility: Specifically designed as the direct replacement for 5H71764-2
ensuring consistent HVAC safety control across residential and light commercial gas-fired appliances
providing essential overcurrent protection for downstream controllers and actuators
monitoring the heat exchanger temperature to prevent unsafe thermal conditions
Hydrotherm BM-3336 Insulated Base Door In a normal operating stateThe Hydrotherm BM 3336 Insulated Base Door is a critical OEM replacement part engineered for high performance thermal containment in Hydrotherm R Series boilers. Designed to fit Model R gas furnaces, including the R 180C, R 210C, R 250C, and R 300B, this insulated boiler door features a steel frame and high density foam insulation to mitigate heat loss at the unit's base. Implementing a Hydrotherm BM 3336 ensures energy efficiency by maintaining