Compact weather compensated controller AHD20
0%
Presentation
The AHD20 is a compact, weather compensated controller built into the actuator housing. It is used to control the mixing valve and the circulation pump to regulate the supply temperature during heating or cooling, depending on the outdoor temperature.
- Weather-compensated heating and/or cooling control.
- Control of independent mixing circuit (mixing valve and circulation pump).
- Control of additional mixing circuit (mixing valve and circulation pump).
Features
- 2 pre-set hydraulic schemes.
- Possibility of connecting up to 4 sensors (supply, outdoor, room/return, power source).
- Two operating modes, weather compensated (by outdoor temperature) or thermostatic (by room temperature).
- Intuitive setting with use of keypad and color display.
- Possibility of connecting a return sensor and limiting the power of the heating circuit.
- Quick and easy "click" mounting system on rotary and ball valves.
- Automatic adjustment of the screen according to the mounting direction.
- Possibility of operating without a room unit (according to the heating curve).
- Possibility of BUS connection with several controllers when using a larger system.
- Error diagnostics and automatic activation of an alternative operating mode.
- Connectivity to the SeltronHome platform with remote control option.
Outlined functions
Clutch for manual operation
The manual mode clutch of the AHD compact controller is activated by pressing the button. When the clutch is activated, the mixing valve control
and, where appropriate, also the circulation pump is switched off to save
energy. Manual operation mode is signalled on the display.
Quick installation
For dismounting, release of safety knob on the flange is needed and controller
can be removed form the valve.
For dismounting, press and hold the release knob on the flange and remove
the controller from the valve.
During operation, controller can not release itself from the valve.
Mounting accessories are available for most mixing valves on the market.
User friendly interface
The user menu consists of a colour display and a keypad. The keypad was
deliberately placed under the button for manual movement, what prevents
unwanted changes of the settings to the controller.
For clear and user-friendly data display, the controller has a built-in colour
graphic display with a 240 x 240-pixel resolution, with adjustable brightness.
The automatic screen orientation ensures that the data is readable regardless
of the installation position.
Plug-in connectors
The AHD compact controller has a built-in socket for the connector of the
power cable. This allows an easy disconnection in the case of maintenance
work, without the need for any tools.
Sensors and other connections are connected to an external connection box,
which allows the connection of:
T1-T4 sensors, Bus connection to another controller, room unit.
Technical data
| AHD20 | |
|---|---|
| TFT display | yes |
| Keypad | yes |
| Own consumption | Maximum 3.5 W |
| Standby power consumption | Maximum 0.5 W |
| Torque | 5 Nm |
| Rotation angle | 90 < ° |
| Rotation speed | 2 min 90 < ° |
| Mixing valve control | 3-point PID |
| Circulation pump control | 2-point (ON/OFF) |
| Relay output | electronic relay, 1 (1) A ~, 250 V~ |
| Connection voltage | 230 V ~, 50 Hz |
| Maximum own consumption | 5 W |
| Power supply of built-in clock | Battery CR1025 (Li-Mn) 3 V |
| Accuracy of built-in clock | +/-1 s (24 h) at 20 °C |
| Degree of protection | IP42 according to EN 60529 |
| Safety class | I according to EN 60730-1 |
| Type of temperature sensors | Pt1000 |
| Housing material | PC - dark grey |
| Operating temperature | 0÷50 °C |
| Storage temperature | -20÷65 °C |
| Product weight | 1.000 g |
| Number of pieces in a package unit | 12 pieces |
| Dimensions |  |
| Electrical connection |  |
Performance comparison
| AHD20 | AHD20W | |
|---|---|---|
| Application | ||
| Weather-compensated heating and/or cooling control. |  | |
| Mixing heating circuit control (mixing valve and circulation pump) | | |
| Technical features | ||
| No. of preset hydraulic schemes | 2 | 2 |
| Number of electronic relays | 1 | 1 |
| No. of temperature sensor inputs | 4 | 4 |
| Temperature setup option 10 to 90 °C | | |
| Additional sensor for measuring the source temperature | | |
| BUS option - interconnection of AHD controller or with other Seltron heating controllers | | |
| Wireless connectivity (connection of wireless room unit and outdoor sensor, WiFi connection to the internet) | — | |
| User functions | ||
| Room heating or cooling according to the time programme | | |
| Heating system protection | ||
| Frost protection | | |
| Antiblock function for mixing valve | | |
| Antiblock function for pump | | |
| Limiting the maximum supply temperature for floor heating | | |
| Data display | ||
| 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 | | |
| Review of temperature data for the previous week | | |
| Signalling of the mixing valve rotating direction | | |
| Control and signalling of the circulation pump operation | | |
| Remote access | ||
| Possibility of USB connection to a PC | | |
| Possibility of connectivity to the SeltronHome platform, which allows remote control via a smartphone or tablet | | |
| Setup and installation | ||
| Wizard for an easy and quick device start-up | | |
| 14-language user interface | | |
| Connection box for sensors | | |
| Setting up the operation by selecting the hydraulic scheme | | |
| Setting of the rotation direction of the mixing valve | | |
| Logging and display of changes made to the setup | | |
| Option for retrieval of the basic setup in the event of data loss or unwanted changes | | |
| Suitable for installation on different types of mixing valves | | |
| "Click" type installation system | | |
| Connection box for sensors is prewired to the controller | | |
| Power cord equipped with plug | | |
Complementary products
-
Room unit RCD20
Digital room unit RCD20 is intended to control room temperature...
-
Communication interface GWD
The GWD3E communication interface is intended for connection of Seltron controllers, room units...
-
Outdoor temperature sensor AFD
AFD sensor is used for measurement of outdoor temperature in Seltron controllers.
