Description
The Hoffman Controls 870-10D Head Pressure Fan Switch is a control component used to regulate condenser operation based on system pressure conditions within HVAC systems.It operates with a 24 VAC control input and supports line voltage ranges of 115 to 208–230 volts at 50/60 Hz, with a capacity of up to 10 amps for compatible fan motors. Installled in air-cooled condensers or refrigeration units, it cycles the condenser fan on and off by sensing the liquid line temperature to maintain proper head pressure. This component plays a role in maintaining correct pressure balance, supporting efficient heat rejection and stable system operation.
