Compact weather compensated controller Seltron AHD20
Regular price €449,00The Seltron 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.
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
Technical data
| 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 |
