Tekmar TK302P Switching Relay - 2 Zones w/ Priority

Product Description

The TEKMAR TK302P switching relay connects up to two thermostats and operates circulators to provide heating to a zoned hydronic heating system. Zone 1 has optional priority over zone 2 and can be used to provide heat to an indirect domestic hot water tank. The 302P includes optional exercising and post purge operation to maximize energy savings.

• Compatible with all low voltage thermostats
• LED for each zone, priority, end switch and RoomResponseTM
• RoomResponseTM signal

Product Highlights

The Switching Relay 302P provides a RoomResponse signal to modulating-condensing boilers to optimize comfort while improving boiler efficiency.

Product Information

Standard Information

• Brand: TEKMAR
• Manufacturer Part Number: TK302P

Technical Specifications

• Product Type: Controller
• Number of Zones: 2
• Power Supply: 115V
• Enclosure - Cover: ABS plastic, Base: galvanized steel, NEMA type 1
• Approvals: CSA C US
• Ambient conditions: Indoor use only, 32 to 122 °F (0 to 50°C), RH 90% non-condensing
• Transformer: 40 VA, expandable to 80 VA with additional transformer M3069 (sold separately)
• Fuses: T5A 250 V slow blow, two spare fuses included
• Boiler XX end switch: 24 V (ac), 5 A
• DHW end switch: 24 V (ac), 5 A
• Mod boiler output: 0-10 V (dc) 500 ohm min load impedance / 4-20 mA 1 k ohm max load impedance