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making it ideal for high-pressure refrigerants
Relying on high-quality HVAC expansion valves reduces callbacks and ensures long-term system stability in demanding residential and light commercial applications
If you need to change the blower speed to adjust for external static pressure
this unit is a fixed-set
Tekmar Controls 257 Control 321894-706 making it ideal for high-pressureThe Tekmar Controls 257 Control is a purpose built 24Vac domestic hot water two stage boiler control designed for high demand applications such as hotels, laundromats, and multi family residential complexes. This sophisticated microprocessor control provides high accuracy domestic hot water temperature regulation by effectively staging up to two on off boilers or a single two stage boiler. Utilizing an NTC thermistor 10k ohm sensor, the 257 maintains