Tekmar Controls 257 Control R-134A 22 requirements for T&P relief

22 requirements for T&P relief valves

this two-position (on/off) actuator eliminates the need for complex external linkages via its integrated direct-mount design

High-Capacity Switching: Robust 15A SPDT contacts allow for direct control of small motors and heavy pilot duty loads

Whether you are performing a PSC motor replacement or a routine maintenance overhaul

this unit integrates seamlessly with the existing pressure switch and control board logic of the Velocity CSC boiler platform to maintain reliable ignition sequences and steady combustion cycles in residential or light commercial applications

Tekmar Controls 257 Control R-134A 22 requirements for T&P reliefThe 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