NRG-DM Digital Thermostat

Raychem Part Number: 1244-015152

Raychem NRG-DM thermostat with packaging box in background and coiled sensor lead.

The NRG-DM can be used with all Raychem underfloor heating: QuickNet, T2Red & T2Blue. This model of the NRG thermostat family is intuitive and easy to use or program.

  • Large Dot Matrix LCD display with blue back light
  • Smart and precise adaptive function
    • Calculates when to start heating to reach desired temperature when required
    • Adapts to the environment
    • Adapts to the floor construction
  • Easy to program
  • Flexible
    • Time schedule with: 1 to 6 events per day; 1 temperature per event
    • Adjustable Boost Mode for temperature and duration
    • Compatible with most switch gear frames
    • Compatible with floor sensor of 2kΩ, 10kΩ, 12kΩ, 15kΩ and 33kΩ
  • Optimum heat management with 4 sensor modes
  • Safe maintenance with 2pole main switch

Product Specifications

Supply voltage 230 VAC +/- 10%, 50Hz
Relay output Heating cable 230 V, max 13 A
Temperature range floor sensor 5°C to +40°C
Temperature range room sensor 5°C to +40°C
Limitation of range Low +5°C/High +40°C
Ambient temperature-operation 0°C to 25°C
Ambient temperature-transport -20°C to +70°C
Accuracy floor sensor 0.2°C in the range 0°C to +40°C
Accuracy room sensor 0.2°C in the range 0°C to +40°C
Temperature control method PID
Control modes
  • Floor sensor
  • Room sensor
  • Room sensor with floor limiter
  • No sensor
Clock function
  • 1 to 6 events/day
  • 7 days/week
  • 1 temperature per event
Back-up for set values Non-volatile memory
Back-up for time and date
  • Minimum 5 years of storage
  • Minimum 10 years if powered 50% of the time
Protection class IP21
Terminals 2.5 mm² Screw cage clamp
Floor sensor 12k @ 25°C +/- 0.75°C (no:38165)
Max length of floor sensor 100 m, 2 x 1.5 mm² (230 VAC cable)
Diameter sensor cable 4.5 mm max. (preferred < 3.5 mm)
Diameter sensor tip 5.0 mm +/-0.1 mm
Dimensions with frame 84 X 84 X 40 mm
Approvals CE, VDE

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