Key Benefits Precise Low-Flow Control: The poppet design ensures steady pressure for both tiny pilot flames and main burner loads

Durable Construction: Housed in a corrosion-resistant aluminum shell designed to withstand rigorous outdoor environments

Integrated Circuit Protection: The inherently limited design prevents damage from short circuits without requiring manual fuse replacement

the Reznor 234712 features a specific "WC setpoint optimized for the unit's blower curve

Low VA Coil: Optimized 24V control circuit performance reduces heat and parasitic energy draw

System Sensor 5621 Detector Key Benefits Precise Low-Flow Control:The System Sensor 5621 is a commercial grade dual circuit mechanical heat detector designed for high reliability fire detection in environments where traditional smoke sensors are prone to nuisance alarms. This 135F fixed temperature and rate of rise heat detector utilizes two independent circuits to trigger both local alarm systems and auxiliary devices like fans or door closers. The Rate of Rise (ROR) element responds to temperature increases