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  Tekmar tN2 House Control -Heat Pump & Backup, Four Zone Valves
Tekmar tN2 House Control -Heat Pump & Backup, Four Zone Valves
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Tekmar tN2 House Control -Heat Pump & Backup, Four Zone Valves

The tekmarNet®2 House Control 406 is designed to operate the equipment in a 2-pipe, single tank, hydronic heating and cooling system. It operates two heat pump stages (water-to-water or air-to-water) with a backup heat source (boiler or electric resistance). The heat pump provides either hot or chilled water to a storage tank loop and optional mixed temperature loop. For radiant heating, the water temperature is calculated using Outdoor Temperature Reset. For radiant cooling, the chilled water temperature is maintained at an adjustable setpoint, or is adjusted using dew-point reset with a humidity sensor. A backup boiler can provide an Outdoor Temperature Reset water temperature as well as domestic hot water and setpoint water temperatures. The 406 operates 4 on-board heating and cooling zones and is expandable up to 52 zones on the boiler, tank, and mix water temperatures.


  • Automatic differential for heat pump and boiler
  • Controls 2-stage heat pump
  • Controls on/off or modulating boiler
  • DHW Post Purge
  • DHW control with priority
  • Electric resistance backup (optional)
  • Exercising
  • Expandable up to 52 zones
  • Floor cooling capable
  • Four 24 V (ac) powered zone valve outputs
  • Indoor Temperature Feedback
  • Intelligent heat/cool switchover
  • One touch overrides (with optional User Switch)
  • Outdoor Temperature Reset
  • Setpoint operation
  • System setback (with optional timer)
  • Variable speed mixing control
  • Warm Weather Shut Down
  • Zone Synchronization


Control Microprocessor control. This is not a safety (limit) control
Packaged weight 1.4 lb. (640 g)
Dimensions 5.5" H x 5.5" W x 2.25" D (140 x 140 x 57 mm)
Enclosure NEMA 1 rated, blue PC+ABS plastic
Approvals CSA C US, meets class B: ICES & FCC Part 15
Ambient conditions Indoor use only, 32 to 104°F (0 to 40°C), RH 90% Noncondensing
Power supply 24 V (ac) ±10% 60 Hz, 100 VA max, Class 2
Control Load 2 VA
Zone, Y1 and O/B Relays 24 V (ac) 3.7 A combined
Y2, Backup Relays 24 V (ac) 5 A
Pump Power 115 V (ac) 12 A
Pump Relays 115 V (ac) 5 A 1/6 hp
Variable Power 115 V (ac) 2.4 A
Sensors NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
-Included Outdoor Sensor 070 and 4 of Universal Sensors 082
-Optional tekmar type#: 033, 479
Warranty Limited 3 Year Warranty

Current Literature

Product Submittal

Nov 2011 - Present


Installation & Operation Manual

Nov 2012 - Present (Dec. 2012 and newer models)


Quick Setup Guide

Dec 2011 - Present


User Manual

Dec 2011 - Present


See Also

  406demo thumb
Leading the Way in Heat Pump Control Promo Image   406 Product Spotlight Promo Image

Part Number: 406

2 +$920.57

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