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and both NAT/LP orifices—to restore reliable firing and prevent nuisance lockouts on high-demand commercial and residential heating systems
What causes a probe rod to send false "water present" signals
making it suitable for high-rise terminal unit applications and demanding hydronic circuits
and alarm signaling in liquid and gaseous media systems
Operating within a 50 to 150 degree temperature range with a fixed 100-degree span
Functional Devices RIB2402SB Relay 321702-401 and both NAT/LP orifices—to restoreThe Functional Devices RIB2402SB is a heavy duty, pre packaged enclosed relay engineered for demanding HVACR and building automation applications. Designed as a reliable dry contact interface, this SPST N O relay features a 24 VAC DC coil and is rated for high voltage switching at 208V or 277V. The NEMA 1 rated enclosure provides pilot light status indication for immediate visual diagnostics in the field. Contractors frequently utilize the RIB2402SB
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