This OEM Carrier replacement fan is engineered specifically for select Carrier

The "MD" (Maximum Differential) model provides a wider water level differential between the pump-on and pump-off levels compared to the standard 150S

the Carrier HC44VQ852 is the manufacturer-designated superseding part for the HC44VL852

Rotation is determined by looking at the discharge side of the fan

Can I use a different coil with this valve body

Honeywell L4079B1033 Controller 321894-708 This OEM Carrier replacement fanThe Honeywell L4079B1033 Pressuretrol Limit Controller is a high limit safety device engineered for precision monitoring in steam heating systems and applications involving air or non combustible gases. Featuring a 2 15 PSI operating pressure range, this controller utilizes a durable stainless steel diaphragm to sense pressure changes and trigger a manual reset SPST switch that breaks on pressure rise. This manual reset functionality is critical for