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Tekmar tN2 House Control, Boiler, DHW and Setpoint, Mixing, Four Zone Pumps

SKU: 403

$1,421.00 

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Product Details

Tekmar 403

The tekmarNet 2 house control 403 is designed to operate all of the mechanical equipment in a residential hydronic heating system, coordinating their operation through network communication. It can be used in applications ranging from a single zone of baseboard with an on-off boiler, to multiple fan coils, mixed radiant floor heating zones and a modulating/condensing boiler. This control regulates up to two heating water temperatures through outdoor temperature reset and indoor temperature feedback. It is capable of controlling a single on-off, two stage or modulating boiler, a mixing device, domestic hot water, setpoint loads, 4 on-board zone pumps and can expand up to 24 zones in total for each space heating water temperature.


  • Finish Blue
  • UPC 779655040302
  • Online Product ID 9574658
  • Width 5.5"
  • Height 5.5"
  • Depth 2.25"
  • Warranty 3 years Limited
  • Prop65 Warning Warning: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
  • Ambient Temperature Range 32 to 104 degree F
  • Boiler Mix Modulating Output 0 - 10 VDC, 500 Ohm Minimum Load Impedance, 4 - 20 mA, 1 kOhm Maximum Load Impedance
  • Class Class 2
  • Control Load 2 VA
  • Control Type Microprocessor
  • Enclosure Material Abs,Polycarbonate
  • Floating Output 24 VAC, 89 VA, 3.7 A
  • Hydronic Hvac Control Type tN2 House
  • Includes Outdoor Sensor 070, (2) Universal Sensor 082
  • Indoor Outdoor Indoor
  • Nema Rating NEMA 1
  • Power Rating 100 VA Maximum
  • Power Supply 24 VAC plus /-10 percent , 60 Hz
  • Pump Power 115 VAC, 12 A
  • Relative Humidity <=90 percent Non-Condensing
  • Relay Boiler System, Zone 1 to 4 Pump, DHW Pump Relay: 115 VAC, 5 A, 1/6 hp, Variable Speed Pump Relay: 115 VAC, 2.4 A, Boiler Stage 1, 2 Relays: 24 VAC, 5 A
  • Safetylist CSA C US, Meets Class B: ICES and FCC Part 15
  • Sensor NTC Thermistor, 10 kOhm at 77 degree F (25 degree C plus /- 0.2 degree C) Beta = 3892
  • Suitable For Use With tekmarNet 2 Thermostats
  • Shipping  1.4 lbs.

Additional information

  • Only requires 2 wires per zone, four 115 VAC powered zone outputs
  • DHW priority (optional), setpoint operation
  • Warm weather shut down, zone synchronization
  • DHW post purge, DHW control
  • For use with tekmarNet 2 thermostats only, tN4 expansion terminals
  • Exercising, boiler protection
  • Variable speed, floating action, or proportional mixing control, automatic boiler differential
  • Expandable up to 48 zones, single on-off, two stage or modulating boiler control
  • Outdoor temperature reset, indoor temperature feedback

About This Brand

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