20" WC Calibration: Ensures accurate flue gas pressure detection to prevent rollout or incomplete combustion

Always verify the wiring diagram on the blower door against the 339855-701 part number

providing stable superheat control even under varying head pressures or bi-flow applications often found in large heat pump assemblies

Designed specifically for measuring relative humidity without an integrated display

High Efficiency: Precision molded cogs improve flexibility and provide up to 98% energy transfer efficiency

Siemens Building Technology 134-1084 Thermostat 320720-756 20" WC Calibration: Ensures accurateThe Siemens 134 1084 Thermostat is a heavy duty line voltage room thermostat designed for high performance control of 120 240 VAC heating and cooling systems. Built around a reliable bimetal thermometer, this SPDT (Single Pole, Double Throw) controller is ideal for commercial and industrial HVAC automation where direct wire switching is required. It features a broad 40 90F setpoint range and integrated high and low limit stops, allowing technicians to