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Tekmar 303P 3-Zone Switching Relay connects up to (3) low-voltage (24V) thermostats and (3) circulating pumps, providing heating to zoned hydronic and radiant floor heating systems. There is an optional priority of Zone 1 over the Zones 2 and 3. Zone 1 can also be used to provide heat to an indirect hot water tank. Compatible with all thermostat and circulator brands.
Technical Specifications:
Features:
Technical Specifications:
- Zones: 3
- Control: Microprocessor Control
- Power supply: 115 VAC, 60 Hz, 16 A
- Transformer Rating: 40 VA at 24 VAC
- Control load: 7 VA at 24 VAC
- Fuses: T5A, 250 V slow blow glass fuse, two spare fuses included
- Pump relays: 115 VAC, 5 A, 1/3 HP, 15 A combined
- Boiler XX end switch: 24 VAC, 5 A
- DHW end switch: 24 VAC, 5 A
- Mod boiler output: 0-10 V 500 ohm min load impedance, 4-20 mA 1 k ohm max load impedance
- Materials: ABS Plastic (Cover), Galvanized Steel (Base) NEMA type 1
- Dimensions: 8-3/16" x 10-11/16" x 2-3/8"
- Packaged weight: 5 lbs
Features:
- Compatible with all 24V thermostat brands (Tekmar, Honeywell, etc.)
- Compatible with all 115/120V circulator pump brands (Taco, Grundfos, Armstrong, Wilo, etc.)
- Unlimited zone expansion
- RoomResponse signal for energy efficiency
- Priority override, pump exercise and post purge
- External LED indicators
- Fused pump and transformer protection (includes two spare fuses)
- CSA approved