Description

Tekmar 303P Relay Switching Three Zones With Priority

Features:

• Away signal shared between tekmar thermostats

• CSA approved

• Compatible with all low voltage thermostats

• Four ground screws

• Fuses protect transformers and pumps

• LED for each zone, priority, end switch and RoomResponse™

• Post purge

• Priority override

• Pump exercising

• RoomResponse™ signal

• Top, bottom and back conduit knockouts

• Two spare fuses included

• Unlimited zone expansion

• Zone priority

Specifications:

• Packaged Weight – 5lb
• Control – 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 – Cover: ABS plastic, Base: galvanized steel, NEMA type 1
• Approvals – CSA C US, RoHS
• Ambient Conditions – Indoor use only, 32 to 122°F (0 to 50°C), RH ≤90% non-condensing
• Power Supply – 115 V (ac) ±10%, 60 Hz, 16 A
• Transformer – 40 VA at 24 V (ac), expandable to 80 VA with additional transformer M3069 (sold separately)
• Fuses – T5A 250 V slow blow 5 x 20 mm glass fuse, two spare fuses included
• Control Lead – 7 VA at 24 V (ac)
• Pump Relay – 115 V (ac), 5 A, 1/3 hp, 16 A combined
• 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 Ω min load impedance, 4-20 mA 1 kΩ max load impedance
• Warranty – Limited 3 Year Warranty

Installation Manual