This specific model is calibrated for R-22

While the actuator itself can be removed by loosening the set screw

Contractors often utilize this Fenwal replacement wire harness for field repairs or new installations where precise routing and secure terminal seating are non-negotiable

Optimized Pitch: The 29-degree blade angle maximizes heat dissipation without overloading the fan motor

verifying the solenoid coil voltage and wattage is critical for system compatibility

Weil McLain 510-811-655 Valve Kit R-410A This specific model is calibratedThe Weil McLain 510 811 655 Valve Kit is a field proven combination gas control valve engineered for step opening ignition sequences in high efficiency hydronic systems. This 1 2" x 1 2" NPT natural gas valve provides precise pressure regulation, operating from a 0. 9" W. C. low fire setting up to a 3. 5" W. C. high fire output. Designed for compatibility with various Weil McLain boiler parts, this replacement gas valve ensures stable manifold