The RIBMU1C is an unenclosed "modular" style relay intended for mounting within a 4-inch wide snap track or a larger control panel enclosure

a reduced pressure zone (RPZ) assembly is required by most codes

This 2-1/2 inch dial gauge provides an accurate readout ranging from 50°F to 266°F (also rated for 0-250°F in specific applications)

you should have continuity

With a wide adjustable timing range from 1

Schneider Electric (Erie) AH23A020 Actuator Els PW 17895 The RIBMU1C is an unenclosedThe Schneider Electric Erie AH23A020 Actuator is a veteran grade solution for hydronic HVAC systems, specifically designed for high performance zone control. This Erie PopTop actuator features a 24Vac hysteresis synchronous motor that provides two position (on off) operation with a reliable spring return fail safe. Engineered for high close off (HCO) applications up to 75 psi, the AH23A020 ensures positive shut off in demand heavy environments like