Key Benefits: Precise Microprocessor Control: Delivers consistent 4-second TFI and provides an automatic one-hour reset after lockout for safe system recovery

0 TR rating makes it a go-to HVAC replacement part for diverse tonnage requirements

Field-Serviceable Logic: Built-in jumpers allow for quick conversion between voltage and current inputs if system requirements change

Smith 100291509 Anti-Scale System

effectively preventing heat exchanger damage and ensuring safe operational cycles

Robertshaw 720-403 Valve 328140-751 Key Benefits: Precise Microprocessor Control:The Robertshaw 720 403 is a versatile slow opening gas valve engineered for precision fuel control in residential and light commercial heating applications. This dual voltage gas valve operates on both 24V AC and 750mV systems, making it a critical stock item for technicians servicing standing pilot furnace units or millivolt boilers. With a 1 2" NPT inlet and 3 4" NPT outlet, the 720 403 offers a high capacity flow rate of up to 150,000 BTU, while