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use a 20-881 thermostat wrench (1/16" hex) on the calibration screw
The unit is designed to fail-safe
this mechanical space thermostat can be mounted in any position
or suction gas service
Raypak 012571F Circuit Board Refrigerant use a 20-881 thermostat wrenchFor industrial and commercial heating applications, the Raypak 012571F Circuit Board serves as the primary universal diagnostic board (UDB) for MVB and Hi Delta systems. This OEM replacement part is engineered for seamless integration with high efficiency boilers and water heaters, featuring an integrated LCD display that provides real time system parameters and diagnostic fault codes. As a veteran technician knows, maintaining the integrity of the