We recommend verifying if your existing HVAC hardware is reusable or if new high-tensile fasteners are required for your specific unit heater installation

This switch is designed to close the circuit when pressure reaches 260 PSI and open the circuit when it drops to 160 PSI

loosen the seal nut and turn the adjusting stem clockwise to raise the setpoint

Always verify that primary and secondary drain plugs are properly configured and hand-tightened with appropriate thread sealant to avoid stress fractures during installation

Trane BRD1816 Circuit Board 319825-402 We recommend verifying if yourThe Trane BRD1816 (also identified by part number BRD01816 and alternate part number 0226463197) is a heavy duty Trane circuit board specifically engineered for high performance heat module and exhaust comparative enthalpy control. As a critical primary control component for commercial grade HVAC systems, this HVAC control board utilizes factory programmed algorithms to regulate sequence of operation, ignition timing, and safety circuit monitoring.