304V

The Zone Valve Control 304V connects up to four thermostats and operates zone valves to provide heating to a zoned hydronic heating system. The 304V operates a system pump whenever a zone valve opens. Zone 1 can operate either a zone valve or a circulator to provide heat to an indirect domestic hot water tank with optional priority over zones 2 through 4. The 304V includes optional exercising to prevent circulator seizure when not in use, and optional post purge operation of the domestic hot water tank to maximize energy savings. The 304V provides a RoomResponse™ signal to modulating-condensing boilers to optimize comfort while improving boiler efficiency.

Features

Compatible with 2, 3 and 4-wire zone valves, unlimited zone expansion
Pump exercising, post purge
Zone priority, priority override
RoomResponse™ signal, compatible with all low voltage thermostats

$ 186.49

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Terms and Conditions
30-day money-back guarantee
Shipping: 2-3 Business Days

Dimensions: 8-3/16" H x 10-11/16" W x 2-3/8" D (208 x 271 x 60 mm)

Ambient conditions: Indoor use only, 32 to 122°F (0 to 50°C), RH ?90% non-condensing

Approvals: CSA C US

Enclosure: Cover: ABS plastic, Base: galvanized steel, NEMA type 2

Control: Microprocessor control. This is not a safety (limit) control.

Warranty: Limited 3 Year Warranty

Packaged weight: 5.0 lb. (2250 g)

Pump relays: 230 V (ac), 5 A, 1/3 hp

Mod boiler output: 0-10 V (dc) 500 ? min load impedance / 4-20 mA 1 k? max load impedance

DHW end switch: 24 V (ac), 5 A

Boiler XX end switch: 24 V (ac), 5 A

Power supply: 115 V (ac) ±10%, 60 Hz, 20 A

Transformer: 40 VA, expandable to 80 VA with additional transformer M3069 (sold separately)

Fuses: T5A 250 V slow blow, two spare fuses included

Zone valve end switch: 24 V (ac)

Zone valve outputs: 24 V (ac), 2 A max per output

Control load: 7 VA

Documents

Tekmar 304V Installation Manual Tekmar 304V Submittal Tekmar RoomResponse Brochure Tekmar RoomResponse Technology