allowing for seamless thermostat wiring in both single and two-transformer setups

The RIB24Z relay is UL Listed for use in plenum spaces

C3 Radial Clearance: Optimized for high-speed equipment where thermal growth is expected

and large-scale heating systems

operating via system power (24VAC) or battery backup using two AA alkaline batteries

McDonnell & Miller 51-2 Feeder Els PW 17895 allowing for seamless thermostat wiringThe McDonnell & Miller 51 2 (Part Number 135000) is a heavy duty mechanical water feeder and low water cut off (LWCO) designed for industrial and commercial low pressure steam and hot water boilers. Engineered for systems with a capacity exceeding 5,000 sq. ft., this unit provides critical protection by maintaining a consistent minimum safe water level regardless of electrical status. It features 1" NPT female connections and a snap acting SPDT switch