Designed for streamlined field maintenance

it ensures proper manifold pressure and burner sequencing in Atmospheric Vent units

replacing the canister with the York S1-8044 with O-rings restores full steam generation capacity and prevents common "Service" or "Change Canister" indicator lights on the control board

3-inch diameter motor with sleeve bearings and thermal protection to handle high-ambient temperatures up to 40°C

Greenheck 460511 Limit Switch 318518-761 Designed for streamlined field maintenanceThe Greenheck 460511 Limit Switch is a critical safety component designed for high performance air handling and ventilation systems. This OEM Greenheck replacement part acts as a thermal safeguard, monitoring air temperature and breaking the electrical circuit if limits are exceeded to prevent equipment failure. Engineered for precision, the 460511 high limit switch features a fixed temperature setpoint calibrated for industrial HVAC applications,