Tekmar 334 - Control Description The tN2 Zone Manager 334 is designed to allow 2-wire tekmarNet®2 Thermostats to connect to a tN4 System Control such as a 420, 421, 422, 423, 274, or 275. The 334 operates up to four zone valves or zone pumps.
Literature — D334, W334
Control — Microprocessor PID control; This is not a safety (limit) control
Packaged Weight — 4.86 lb (2200 g)
Enclosure — Blue PC+ABS 94V-0 plastic with metal top and bottom conduit connection walls
Dimensions — 8-1/16” H x 11-1/8” W x 2-15/16” D (204 x 282 x 74 mm)
Approvals — CSA C US, CSA/UL 61010-1, meets Class B: ICES and FCC Part 15
Ambient Conditions — Indoor use only, 32 to 109°F (0 to 43°C)
— RH max 80% to 87°F (31°C), down to 50% at 104°F (40°C)
— Altitude < 6560 feet (2000 m), Installation Category II, Pollution Category 2
Power Supply — 115 V (ac) +/- 10% 60 Hz 12 A (max with attached module)
Transformer Power Available — 24 V (ac) 17 VA, fuse T1.25 A 250 V
Zone Group Pump A Relay — 115 V (ac) 5 A
Zone Relays — 115 V (ac) 5 A
Combined Load on Zone Power — 12 A Maximum
Cool and Fan Relays — 24 V (ac) 2 A
