Part of the 325 Series

Ordering Code: 325

UPC: 779655032505

tN4 Zone Expansion Module, Six Zone Valves


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  • Powered 120 V zone group pump output
  • Six powered 24 V zone valve outputs
  • CSA C US Certified for use in USA and Canada
  • Time delay for thermal motor zone valves
  • Internal 50 VA transformer
  • tekmarNet (R) 4 compatible
  • Simple wiring
Agency Approvals CSA C US, meets Class B: ICES & FCC Part 15
Ambient Conditions Indoor use only, 32 to 122 degrees F (0 to 50 degrees C), RH less than or equal to 80 percent to 88 degrees F (31 degrees C), down to 50 percent above 104 degrees F (40 degrees C), Altitude less than 6560 ft. (2000 m), Installation Category II, Pollution Degree
Control Load Combined relay load 5 A max
Control Type Microprocessor control, this is not a safety (limit) control
Dimensions 3-5/8" H x 5-3/8" W x 9/16" D (92 x 137 x 14 mm)
Power Supply Provided by interconnected tekmarNet Zone Manager
Transformer 24 V (ac) 53 VA, fuse T2.5 A 250 V
Zone Group PumpC Relay 115 V (ac) 5 A
Zoning - Thermostat Type t4 Zone Expansion Module