Description
The Tekmar 303V is a microprocessor‑controlled zone valve panel for hydronic and radiant heating systems. It supports up to three thermostats and three zone valves, with zone 1 capable of priority control for an indirect domestic hot water tank. Features include a RoomResponse™ signal output for modulating‑condensing boilers, pump‑exercising to prevent circulator seizure, optional post‑purge, and LED diagnostics for each zone and system function.
Features
- Supports up to three thermostats and three zone valves
- Zone 1 can be set for priority over zones 2 and 3 (ideal for indirect DHW loads)
- RoomResponse output for modulating‑condensing boiler interface
- Pump exercising to prevent circulator seizure during idle periods
- Optional post‑purge of the last calling zone to maximize efficiency
- LED indicators for each zone, priority status, end‑switch, RoomResponse™ signal
- Conduit knock‑outs at top, bottom and back; fuses protect transformer and pumps; two spare fuses included
- CSA C/US listed for indoor use only
