tekmar 324 - Control Description The tN2 Zone Expansion Module 324 is designed to allow 2-wire tekmarNet®2 Thermostats to connect to a tekmarNet®4 System Control such as a 420, 421, 422, 423, 274, or 275. The 324 operates up to four zone valves or zone pumps. The 324 is to be installed in an enclosure together with a tekmar Zone Manager.
Literature — D324, W324
Control — Microprocessor PID control; This is not a safety (limit) control
Packaged Weight — 4.86 lb (2200 g)
Dimensions — 3-5/8” H x 5-3/8” W x 9/16” D (92 x 137 x 14 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 — Provided by interconnected Zone Manager
Zone Group Pump 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
