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402

Tekmar tN2 House Control -Boiler, DHW & Setpoint, Mixing, Four Zone Valves

The tekmarNet 2 House Control 402 is designed to operate all 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 valves, and can expand up to 24 zones in total for each space heating water temperature.


Features

  • DHW priority (optional), setpoint operation

  • Exercising, Boiler Protection

  • DHW post purge, DHW control

  • Outdoor temperature reset, indoor temperature feedback

  • Expandable up to 48 zones, single on/off, two stage, or modulating boiler control

  • Variable speed, floating action, or proportional mixing control, automatic boiler differential

  • Warm weather shut down, zone synchronization

  • Only requires 2 Wires Per Zone, Four 24 V (ac) powered zone outputs

  • For use with tekmarNet 2 thermostats only, tN4 expansion terminals

Factory Direct
$ 962.12 $ 962.12

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  • Manufacturer
  • Sensor
  • Approvals
  • Ambient Conditions
  • Control Type
  • Enclosure NEMA Rating
  • Hydronic - HVAC Control Type
  • Boiler Stage1 Stage2 Relay
  • Calls
  • Control Load
  • Modulating Output
  • Pump Power
  • Pump Relay
  • Variable Pump
  • Zone Valve - Floating Action Load
  • Dimensions
  • Voltage
  • Enclosure Material
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Terms and Conditions
30-day money-back guarantee
Shipping: 2-3 Business Days
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Manufacturer: Tekmar
Sensor: NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta=3892
Approvals: CSA C US, meets class B: ICES & FCC Part 15
Ambient Conditions: Indoor use only, 32 to 104 degrees F (0 to 40 degrees C), RH less than or equal to 90 percent Non-condensing
Control Type: Microprocessor control, this is not a safety (limit) control
Enclosure NEMA Rating: NEMA 1
Hydronic - HVAC Control Type: tN2 House Control
Boiler Stage1 Stage2 Relay: 24 V (ac) 5 A
Calls: Setpoint and DHW calls, Short, 0 - 32 V (ac)
Control Load: 2 VA
Modulating Output: Boiler modulation 0 - 10 V (dc) 500 ohms min load impedance, 4 - 20 mA 1 k ohms max load impedance
Pump Power: 115 V (ac) 12 A max
Pump Relay: 115 V (ac) 5 A, 1/6 hp
Variable Pump: 115 V (ac) 2.4 A
Zone Valve - Floating Action Load: 89 VA, 24 V (ac), 3.7 A for zones 1 to 4 plus floating action output
Dimensions: 5.5" H x 5.5" W x 2.25" D (140 x 140 x 57 mm)
Voltage: 24 V (ac) plus / minus 10 percent, 60 Hz, 100 VA max, Class 2
Enclosure Material: Blue PC+ABS plastic
Documents
Tekmar 402 Manual Tekmar 402 Quick Setup Guide Tekmar 402 Submittal Tekmar Lower the Cost of Heating with a tekmar House Control System Brochure

Tekmar tN2 House Control -Boiler, DHW & Setpoint, Mixing, Four Zone Valves