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Smith 100208511 Prepurge Relay is a mission-critical 24VAC control component engineered for high-efficiency gas-fired boilers and commercial water heaters
Common Questions: When should I replace the burner plate insulation
Key Benefits Balanced Port Design: Eliminates the effects of inlet pressure variations
Common Questions What is the shaft size for the Multi Products 3174
the solenoid coil may not sit flush
Resideo M847D-ZONE Replacement motor R-22 Smith 100208511 Prepurge Relay isThe Resideo M847D ZONE replacement motor is a purpose built 24Vac spring return actuator engineered for direct compatibility with ARD and ZD zone dampers. This two position damper motor provides reliable air flow control in residential and commercial zoning systems. Designed as a direct replacement for M847D1004, the unit features a power closed, spring open configuration, ensuring the damper default position is open during power loss for system
