Tekmar Switching Relay Four Zones with Priority

    226.38 226.38 226.38 USD


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    Tekmar Switching Relay Four Zones with Priority


    ControlMicroprocessor control. This is not a safety (limit) control.
    Packaged weight5.0 lb. (2250 g)
    Dimensions8-3/16" H x 10-11/16" W x 2-3/8" D (208 x 271 x 60 mm)
    EnclosureCover: ABS plastic, Base: galvanized steel, NEMA type 1
    ApprovalsCSA C US
    Ambient conditionsIndoor use only, 32 to 122°F (0 to 50°C), RH ?90% non-condensing
    Power supply115 V (ac) ±10%, 60 Hz, 20 A
    Transformer40 VA, expandable to 80 VA with additional transformer M3069 (sold separately)
    FusesT5A 250 V slow blow, two spare fuses included
    Pump relays230 V (ac), 5 A, 1/3 hp
    Boiler XX end switch24 V (ac), 5 A
    DHW end switch24 V (ac), 5 A
    Mod boiler output0-10 V (dc) 500 ? min load impedance / 4-20 mA 1 k? max load impedance
    WarrantyLimited 3 Year Warranty

    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.

    • RoomResponse™ 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™
    • 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

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