Smith Cyclone series units where maintaining specific manifold pressure and gas-to-air ratios is vital for operational safety

s slim profile and integrated pocket clip allow for rapid field adjustments of branch pressure and sensitivity without damaging the delicate internal bimetal elements or plastic housings of the room thermostat module

Voltage Versatility: Rated for 208-230V applications

Always verify the cut-in and cut-out differentials against the specific unit service manual to prevent short cycling

preventing false alarms while ensuring V-Fast response during actual fire conditions

Resideo HR90 Controller 322055-301 Smith Cyclone series units whereThe Resideo HR90 TheraPro is an advanced digital radiator controller designed for precise hydronic zone management in residential and light commercial applications. This electronic radiator valve actuator utilizes a clear, backlit adjustable display for seamless integration into any HVAC manifold system or standalone radiator setup. Featuring an M30 x 1. 5 connection, the HR90 is compatible with standard thermostatic radiator valves, providing