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Siesta-CRX RD Exterior

Daily and weekly chronothermostat, with external probe (not included) and internal sensor. Ideal for ErP Class IV compliance (=2%). 8A relay, heating and cooling. Order separately Silicone cable meter WITH PLUG (cod.7.343) x meters.

Commercial Sheet

SKU: 29.070 Category:

Daily and weekly chrono-thermostat for Heating / Cooling, equipped with the powerful ARM Cortex-M3 processor, a breakthrough in technology and 32-bit architecture, allowing block programming

Combines advanced technology, with an innovative memory accelerator, that generates high performance and low energy consumption

Advanced management of the processes of activation / deactivation of the boiler that provide a considerable greater savings and efficiency, up to 30% savings compared to other thermostats on the market

PASS security function that locks the keyboard, prevents tampering and access by unauthorized personnel

By means of the fuzzy-logic algorithm, it makes a prediction of the heating needs in the house, so that it anticipates according to the temperatures detected outside with respect to the existing ones inside. With this it manages to generate greater savings and comfort to the users of the house. It does not matter what type of heating is used, since the algorithm itself, together with the technology of this chronothermostat, learns so that it becomes more accurate with each cycle. The greatest savings are achieved in underfloor heating installations due to its high inertia, but it can be applied to any heating or air conditioning system

The fuzzy-logic system can be operated with or without an external probe, with an external probe it is much more precise

Technical Characteristics

  • Easy to select block system programming (e.g. at what time, for what temperature desired, applicable on what day)
  • Automatic summer/winter time shift adjustment
  • Manual operation, temporarily cancelling the programming.
  • Heating or cooling selection by keys (without having to enter programming) ideal for grid/valve 3-wire applications (recommended by major manufacturers)
  • Maintains different programs and temperatures for heating and cooling
  • 5-button keyboard, for easy and intuitive programming
  • Blocking regulation scale
  • Up to 28 independent program changes (daily / weekly)
  • Display of the status of the heating / cooling / anti-frost contact
  • Relative humidity display, no humidity control, relative humidity is local, not remote
  • Start/Stop key. Keeps the anti-frost function activated
  • Anti-frost and holiday function (off / on programmed)
  • Function: protection of the circulator pump against blockage
  • Vacation and guest leave program
  • Internal temperature sensor with regulation scale from 5°C to 35°C
  • Differential adjustable from 0.1 to 3K in both heating and cooling
  • Temperature in °C (Celsius) or °F (Farenheit)
  • Probe Calibration
  • Thermostat adaptable to universal box
  • Powered by 2 x 1.5V AAA batteries, alkaline
  • Keeps programming in memory, even without batteries
  • Battery Change Warning
  • Potential-free relay, switched 8 Amps
  • Dimensions 100 x 80 x 20 mm
  • The probe is supplied without a cable
  • The female connector is supplied mounted with the required cable length, minimum 1 meter and maximum less than 50 meters


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