this assembly ensures the pressure switch closes correctly to initiate the ignition sequence

it functions within the main control unit that interrogates MB-604E or MB-608E expansion boards to manage expanded burner configurations

though some variations in specific system designs may require a bronze alternative (10391304) for certain potable water applications

this controller maintains tight setpoint tolerances for optimized zone comfort and energy efficiency

Grundfos 97627423 Actuator 30067439-890 this assembly ensures the pressureThe Grundfos 97627423 Actuator is a professional grade solution for precise fluid control in hydronic heating and cooling systems. Specifically engineered for use with Grundfos UP ZV zone valves, this 24V actuator features a normally closed (NC) configuration, ensuring the valve remains closed until a control signal is received. Its integrated end switch provides critical position feedback, allowing contractors to sequence boiler or pump operation