common in high-demand rooftop environments

The Robertshaw RS1100 incorporates non-volatile memory to retain configuration settings during power outages

and fans within VAV boxes and air handlers

and 3/8" FPT valves in both body materials

the QTS1500T comes equipped with a factory-installed single-pole thermostat (45°F to 85°F range) and offers dual wattage capabilities

Nordyne 624710 Control Board 321702-401 common in high-demand rooftop environmentsThe Nordyne 624710 Control Board is a critical OEM ignition control board designed for high static and standard efficiency gas furnaces and package units across the Nordyne family of brands, including Intertherm and Miller. As a direct replacement for Nordyne 6247100 and 624591, this HVAC circuit board manages the essential sequences of operation, including the hot surface igniter (HSI), internal blower motor timings, and the gas valve solenoid.