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The Trane CNT3781 is a precision-engineered 180F CO Auto Limit Switch designed for high-reliability thermal protection in commercial and industrial HVAC systems
preventing motor winding failure
meaning it closes the circuit to trigger the fan at 190°F and opens the circuit to cut power at 30°F
This Sure-Flex sleeve is molded from high-density EPDM rubber
This gasket is precision-cut to match the bolt patterns of the 815 series steam trap
Weil McLain 635-100-010 Thermostat 30067439-890 The Trane CNT3781 is aThe Weil McLain 635 100 010 is a heavy duty commercial thermostat designed for high demand hydronic heating and indirect water heater systems. Engineered to operate within a precise 90F to 190F temperature range, this mechanical stat is the OEM replacement for controlling Plus 80, Plus 100, Plus 120, and Gold Plus 100 110 119 series commercial water heaters. As a veteran grade HVAC control, it features a rugged bulb and capillary sensing element that
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