Plaza notes
Hard ruleDescription
With a 3-7 psi spring range and a generous 4-inch stroke
For technicians handling larger jobs
meeting strict safety codes for combustion safeguard systems
triggering two DPDT relays to shut down fans or open heating valves
effectively preventing furnace ignition failure and flame rollout conditions
Resideo HR90 Controller 323080-701 With a 3-7 psi springThe 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
Exchange/Return Notes
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