Heil Quaker ICP 2120368 Wheel 321894-709 Fail-Safe Reliability: The mechanical spring

Fail-Safe Reliability: The mechanical spring return ensures the valve returns to the normally open position during power loss to maintain system flow

ensuring proper combustion air intake and flue gas exhaustion

Protect Critical Components: Prevents damage to circulator pumps and zones by cutting off the heat source before water reaches dangerous temperatures

Technicians should verify the specific unit configuration

Heil Quaker ICP 2120368 Wheel 321894-709 Fail-Safe Reliability: The mechanical springThe Heil Quaker ICP 2120368 Blower Wheel is a precision engineered double inlet centrifugal fan wheel designed for high static pressure applications in residential and light commercial HVAC systems. This heavy duty forward curved blower wheel measures 12" diameter by 12" width and features a 1 2" bore configuration. Engineered for a Counter Clockwise (CCW) rotation (viewed from the drive end), this component is a direct replacement for specific Heil,