It is critical to match the A217's 3450 RPM spec exactly

Universal Compatibility: The vent damper wiring harness is designed to fit nearly 100% of today's residential gas boilers

The 803112601 features a standard 1/4" NPT bottom inlet for the gas connection and a 1/8" NPT vent

This typically depends on the specific wiring configuration of the control circuit

This OEM-spec part ensures the furnace humidifier sensor operates within factory parameters for optimal performance

Resideo TD-165 Tridicator R-448A It is critical to matchThe Resideo TD 165 Tridicator is a professional grade instrument designed for simultaneous monitoring of pressure and temperature in hydronic heating systems. Specifically engineered for boilers and critical shut off valve locations, this gauge features a 3 1 8" high visibility dial with a dedicated relief set point indicator for precise system safety management. With a maximum safe operating pressure of 75 PSI and a temperature range spanning 60F to