Compact weather compensated controller AHD20
Compact weather compensated controller AHD20

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Compact weather compensated controller AHD20

Compact weather compensated controller AHD20

The compact weather compensated controller AHD20 integrated in the motor drive housing. It allows direct mounting on more than 20 mixing valves from different manufacturers.

Read > Why is the heating controller an important part of the heating system?

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Manual operation coupling AHD20

Clutch for manual operation

The manual operation clutch of the AHD compact controller is activated by pressing the button (marked in the picture). After activation of the clutch, the valve can be moved manually, at the same time interrupting the automatic control and, if necessary, the operation of the circulating pump. Operation in manual mode is indicated on the display.

AHD20 quick installation

Quick assembly

The innovative accessories and mounting system allow the compact AHD controller to be quickly mounted and dismounted on the mixing valve, largely without the use of tools. The valve is mounted using a push-on system. To dismantle, simply release the safety catch on the flange and remove the regulator from the valve. The actuator cannot be automatically removed from the valve during operation.
Accessories are available for most mixing valves on the market.

Friendly AHD20 user interface

Friendly user interface

The user interface consists of a colour display and a keyboard. The keypad has been placed under the manual scroll button to prevent unwanted changes to the controller settings. For a clear and user-friendly display of data, the controller has a built-in colour graphic display with a resolution of 240 x 240 pixels, with the possibility of adjusting the backlight intensity. The automatic orientation of the display ensures readability of the data regardless of the mounting position of the controller.

Plug-in connectors AHD20

Plug-in connectors

The compact AHD controller has a socket built into the housing for connecting the power cable. This allows easy disconnection of the power supply in case of maintenance work, without the use of tools. Sensors and other connections are plugged into the external coupling bay where it is possible to connect:

  • Sensors T1-T4.
  • Bus connection to another controller.
  • In-room unit.
Setting the controller with the wizard

Setting the controller with the wizard

The controller has a built-in wizard for setting up the controller for the first time. It is a four-step process and includes:

  • Step 1: language choice.
  • Step 2: Choosing a hydraulic scheme.
  • Step 3: Choosing the steepness of the heating curve.
  • Step 4: select the direction of opening of the mixing valve.

Once this procedure is complete, the controller is set up and ready for basic operation.

Use

  • Weather compensated heating and/or cooling control.
  • Control of the independent mixing circuit (mixing valve and circulation pump).
  • Control of the additional mixing circuit (mixing valve and circulation pump).

Capabilities of the compact AHD20 controller

  • 2 pre-set hydraulic schemes.
  • Up to 4 sensors can be connected (inlet, outdoor, room/return, energy source).
  • Two modes of operation, weather-controlled (by outside temperature) or thermostatic (by room temperature).
  • Intuitive set-up with keypad and colour display.
  • Possibility to connect a return sensor and limit the power of the heating circuit.
  • Quick and easy "click" mounting system on the mixing valve.
  • Automatic adjustment of the screen according to the mounting direction.
  • Possibility to operate without room unit (following the heating curve).
  • BUS connection to multiple controllers in the case of a larger system.
  • Fault diagnostics and automatic activation of an alternative operating mode.
  • Connectivity to the SeltronHome platform with remote control.
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Technical features
One electronic relay
Temperature setting 10÷90 °C
Additional sensor for source temperature measurement
User functions
Space heating or cooling according to a timed programme
Protecting the heating system
Anti-freezing protection
Anti-blocking function for mixing valve
Anti-blocking function for pump
Limiting the maximum supply temperature for underfloor heating
Display of data
Display of notifications and warnings about the heating system operation
Display of temperatures and other operating data
Detailed display of temperatures for the current day
Overview of temperature data for the last week
Mixing valve direction of rotation signalling
Circulation pump control and signalling
Remote access
USB connection to a PC
Setup and installation
Startup Wizard for easy and fast device startup
14-language user interface: EN, DE, FR, NL, PL, ES, SL, IT, CZ, SK, HR, RU, HU and UA
Connector system for sensor connection
Setting the operation by selecting the hydraulic scheme
Adjusting the direction of rotation of the mixing valve
Logging and displaying changes to settings
Ability to retrieve basic settings in case of loss or unwanted changes
Can be mounted on different types of mixing valves
Click-to-install system
The sensor coupling is pre-wired into the regulator
Power cord with plug
Lead Form Test
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Here you can ask questions about heating and cooling products or make an enquiry for your project. If you already have technical documents, plans or additional information about your project, you will be able to add them in later steps.

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NOTICE

The Seltron service will be closed from 27 December to 29 December 2023.
Any emergencies or issues that arise during our absence will be dealt with as soon as the service reopens on 3 January 2024.
Thank you for your understanding.

Opening hours of the Seltron store on 30 December 2023.
  • from 7.00 to 12.00