Viessmann 7856004 Pump Head 322057-301 As a veteran-preferred V5011 replacement

As a veteran-preferred V5011 replacement part

this component is critical for maintaining precise gas combustion and heat transfer efficiency

The Daikin-McQuay 031780500 is an OEM thermal expansion valve power head engineered for precise refrigerant metering in industrial and commercial HVACR systems

optimized for vertical mounting

Technicians should refer to the wiring diagram on the motor shell to confirm the specific microfarad (µF) rating required for the run capacitor to ensure optimal torque and efficiency

Viessmann 7856004 Pump Head 322057-301 As a veteran-preferred V5011 replacementThe Viessmann 7856004 Pump Head is a precision engineered Grundfos UPS15 78 B1KA replacement designed for high head hydronic applications. This boiler circulation pump assembly is the OEM solution for restoring hydraulic balance in Viessmann Vitodens 100 W and 200 series condensing boilers. Featuring a 3 speed motor configuration, this wet rotor circulator allows for fine tuning the flow rate to match the specific friction loss of the heat exchanger