HVAC / Thermostats & Controls
Installation Guide for Danfoss ECL Comfort 120 Controller
A comprehensive installation and setup guide for the Danfoss ECL Comfort 120 controller. This manual covers mounting instructions, electrical wiring diagrams, cable preparation, and system commissioning via the Danfoss app.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
The Danfoss ECL Comfort 120 is an electronic controller designed for HVAC systems. This guide provides essential information for professional installation and initial setup. Ensure the power supply is 230 V a.c. before beginning any electrical work. Commissioning is performed via the Danfoss app using a Bluetooth connection.
Mounting
The controller is designed for wall mounting. Ensure the installation surface is flat and suitable for the device dimensions. The required cutout for the installation is 138 x 92 mm.
- Ensure the device is securely mounted to the wall.
- Use appropriate tools to secure the unit in place.
- Verify that the installation environment meets the requirements for electronic equipment.
Electrical Installation
All electrical connections must be performed by qualified personnel in accordance with local regulations. The device operates on 230 V a.c.
- Cable Preparation: Strip the outer cable insulation by approximately 30 mm and the inner wire insulation by 6 mm to ensure proper contact in the terminal blocks.
- Wiring: Connect sensors, actuators, and power supply according to the specific wiring diagrams provided in the manual.
- Terminal Blocks: The device features terminal blocks for inputs (sensors) and outputs (actuators/pumps). Ensure wires are firmly secured.
- Tightening Torque: When securing connections, do not exceed the specified torque limits (max 0.6 Nm for cable connections).
Commissioning
The ECL Comfort 120 is commissioned using a smartphone or tablet.
- Download the official Danfoss app.
- Ensure Bluetooth is enabled on your mobile device.
- Keep your mobile device within 1.5 meters of the controller during the pairing and setup process.
- Follow the on-screen instructions in the app to complete the configuration.
Technical Specifications
- Power Supply: 230 V a.c.
- Relay Output Rating: 4 (2) A / 230 V a.c.
- Power Consumption: 15 VA / 230 V a.c.
Manufacturer information
Danfoss A/S
Practical help
Common problems
Device does not power on
Verify that the 230 V a.c. power supply is correctly connected to the L and N terminals.
Cannot connect via Bluetooth during commissioning
Ensure your smartphone is within 1.5 meters of the controller and that Bluetooth is enabled on your device.
Before use
- Verify the model code (e.g., 100B1200) matches your specific system requirements.
- Ensure the power supply is 230 V a.c.
- Prepare cables by stripping 30 mm of outer insulation and 6 mm of inner insulation.
- Check that the mounting surface allows for a 138 x 92 mm cutout.
- Ensure you have the Danfoss app installed on your mobile device.
Specs in practice
- 4 (2) A / 230 V a.c.
- Maximum relay output capacity for connected devices.
- 15 VA / 230 V a.c.
- Power consumption of the controller unit.
Images and diagrams
- Terminal blocks 1-9, 50-51, 62-68: Used for connecting various sensors, actuators, and power inputs.
- The wiring diagrams on pages 3 and 5 illustrate specific configurations for different system setups.
Model compatibility
- Designed for 230 V a.c. systems only.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.