304P

Product Image - 304P
Product Image - 304P
Product Image - 304P
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Part of the Zone Controls Series

Ordering Code: 304P

UPC: 779655030402

Switching Relay, Four Zones with Priority

 

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tekmar Home




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 (TM) signal to modulating-condensing boilers to optimize comfort while improving boiler efficiency.

Features

  • RoomResponse (TM) signal, compatible with all low voltage thermostats
  • Unlimited zone expansion, zone priority
  • Priority override, pump exercising
  • Post purge, LED for each zone, priority, end switch and RoomResponse (TM)
  • Away signal shared between tekmar thermostats, four ground screws
  • Top, bottom and back conduit knockouts
  • Fuses protect transformers and pumps
  • Two spare fuses included
  • CSA approved
Specifications
Agency Approvals CSA C US
Ambient Conditions Indoor use only, 32 to 122 degrees F (0 to 50 degrees C), RH less than or equal to 90 percent non-condensing
Control Load 7 VA at 24 V (ac)
Control Type Microprocessor control, this is not a safety (limit) control
Dimensions 8-3/16" H x 10-11/16" W x 2-3/8" D (208 x 271 x 60 mm)
Enclosure Material Cover: ABS plastic, Base: galvanized steel
Enclosure NEMA Rating NEMA 1
Power Supply 115 V (ac) plus / minus 10 percent, 60 Hz, 20 A
Pump Relay 115 V (ac), 5 A, 1/3 hp, 17.3 A combined

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