a dedicated P70 high pressure control with open-high switch action should be used

meaning the valve stem remains at its current position until power is restored and a new signal is received

The brass body construction is paired with a durable EPDM diaphragm

7 microamps to maintain the gas valve relay

Ruggedly constructed for exterior applications

York 031-01743-002 Board 320819-301 a dedicated P70 high pressureThe York 031 01743 002 Input Output Board is a critical OEM replacement part designed for high end York and Johnson Controls HVAC systems, particularly industrial chiller control panels and OptiView center assemblies. Built to handle complex signal processing, this I O control board manages the interface between system sensors and actuators, converting analog inputs into precise digital data for the main processor. As a veteran technician knows,