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- Brand: TekmarVoltage Rating: 115 VAC
- The Switching Relay 304P connects up to four thermostats and operates circulators to provide heating to a zoned hydronic heating system. Zone 1 has optional priority over zones 2 through 4 and can be used to provide heat to an indirect domestic hot water tank. The 304P includes optional exercising to prevent circulator seizure when not in use, and optional post purge operation of the last operating zone to maximize energy savings. The 304P provides a RoomResponse signal to modulating-condensing boilers to optimize comfort while improving boiler efficiency.
- Priority override, pump exercising|RoomResponse signal, compatible with all low voltage thermostats|Unlimited zone expansion, zone priority|Post purge, LED for each zone, priority, end switch and RoomResponse|Four zones with priority
- Tekmar Switching Relay, 115 VAC, 20 A, 60 Hz, LED, NEMA 1 Enclosure, 10-11/16 in W x 2-3/8 in D x 8-3/16 in H, Import