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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
The B217 ball valve design is maintenance-free and does not require repacking
including the 24V compressor contactor signal and blower speed switching
Always check the wiring schematic on your unit’s access panel
Its rugged design handles the thermal stresses typically found in gas furnace electrical components
MARS 39225 Limit Switch R-448A The B217 ball valve designThe MARS 39225 Adjustable Limit Switch is a high performance open on rise thermal safety control designed for precise temperature regulation in HVAC systems, furnaces, and industrial heating applications. Built for the rigors of field service, this adjustable limit switch offers a flexible setpoint range of 175F to 215F, allowing technicians to dial in the exact thermal parameters required for specific equipment. It features a robust SPST switch