This control is factory-set to trip at a fixed 450°F (232°C)

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or 0-10 V to match various BAS controller requirements

The valve is rated for a maximum of 80 psi

Tekmar Controls 256 Control 340155-7026 This control is factory-set toThe Tekmar Controls 256 is a sophisticated 24Vac single stage boiler control engineered to optimize hydronic system efficiency through precise outdoor reset technology. Designed for veteran contractors, this microprocessor based control adjusts the boiler supply temperature based on fluctuating outdoor conditions, effectively preventing short cycling and reducing energy consumption. The unit features a characterized heating curve that allows for fine