Description
The Tekmar 306P is a six‑zone switching relay designed for hydronic heating systems. It supports up to six thermostats and six circulators, with Zone 1 capable of priority control (ideal for an indirect domestic hot water tank). Features include pump‑exercising to prevent circulator seizure, post‑purge of the last operating zone for increased efficiency, and a RoomResponse output signal for modulating‑condensing boiler integration.
Features
- Supports up to six thermostats and six pumps
- Zone 1 can be set for priority override over Zones 2‑6
- Pump exercising to prevent circulator seizure during idle periods
- Post‑purge of the last calling zone to maximize efficiency
- RoomResponse 0‑10 V / 4‑20 mA output for modulating‑condensing boilers
- LED indicators for each zone, priority status, end‑switch and RoomResponse™ signal
- Top, bottom and back conduit knock‑outs; fused transformer and pump protection with two spare fuses included
- CSA C/US approved for indoor use only
Specs
| Agency Approvals | CSA C US |
| Ambient Conditions | Indoor use only, 32 to 122 degrees F (0 to 50 degrees C), RH less than or equal to 90 percent non-condensing |
| Control Load | 7 VA at 24 V (ac) |
| Control Type | Microprocessor control, 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 Material | ABS Plastic, Glavanized Steel |
| Enclosure NEMA Rating | NEMA 1 |
| Markets | Multifamily Homes, Single-Family Homes, Small Commercial Buildings |
| Power Supply | 115 V (ac) plus / minus 10 percent, 60 Hz, 20 A |
| Pump Relay | 115 V (ac), 5 A, 1/3 hp, 17.3 A combined |
