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the Hand position on the HOA switch allows a technician to override the control system and power the motor locally for troubleshooting
Field technicians rely on this part for its precision in HVAC head pressure regulation
This high-precision air pressure switch is factory-calibrated to a setpoint of
technical specifications indicate this motor is rated for 50/60 Hz frequency
Schneider Electric (Barber Colman) 2252-273 Temperature Transmitter 320074-702 the Hand position on theThe Schneider Electric (Barber Colman) 2252 273 Temperature Transmitter is a precision engineered pneumatic temperature transmitter designed for high performance HVACR control loops. This unit features a 50 to 100 degree temperature range with a fixed 50 degree span, providing a 3 to 15 psig proportional output signal. Built for duct mounting, the 2252 273 utilizes a 10 inch rigid coiled element for rapid response times in air streams where averaging
