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Discontinued - Replaced By: 335

Part of the 337 Series

Ordering Code: 337

UPC: 779655033701

337 tN4 Dual Zone Manager


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  • Internal 50 VA transformer
  • Three powered zone valve outputs on tekmarNet (R) 4 Bus A
  • Three powered zone valve outputs on tekmarNet (R) 4 Bus B
  • tekmarNet (R) 4 compatible
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 load on input power 15 A max
Control Type Microprocessor control, this is not a safety (limit) control
Dimensions 8-1/16" H x 11-1/8" W x 2-15/16" D (204 x 282 x 74 mm)
Enclosure Material Blue PC+ABS plastic with metal top and bottom conduit connection walls
Enclosure NEMA Rating NEMA 1
Power Supply 115 V (ac) plus / minus 10 percent, 60 Hz, 15.5 A, fuse T15 A 250 V
Transformer Power Available 24 V (ac) 50 VA, fuse T2.5 A 250 V
Zone Group Pump Group pump B demand24 V (ac) less than 0.1 VA
Zone Group Pump Relay Pump B Relay 115 V (ac) 5 A
Zone Group PumpA Relay 115 V (ac) 5 A
Zoning - Thermostat Type tN4 Dual Zone Manager