this board is specifically designed for single-stage units and is commonly paired with X13 constant torque motors

Smith 100208504 Relay is a critical 24V control component designed for high-performance integration within Copper-Fin CB/CW 497-747 boiler and water heater systems

Rugged Construction: Features a corrosion-resistant bronze body and seat for long-term service life in harsh mechanical rooms

and agricultural ventilation systems

this unit effectively manages damper surfaces up to 45 square feet

Weil McLain 383-600-091 Valve 322057-301 this board is specifically designedThe Weil McLain 383 600 091 is a high performance ASME Pressure Relief Valve specifically engineered for hydronic heating systems. Designed to protect the primary heat exchanger from over pressurization, this valve is factory calibrated to relieve at 30 PSIG. It features a robust 3 4" NPT female inlet and is the standard safety component for Weil McLain EG series boilers and other compatible hydronic units. When system pressure exceeds safe operating