Danfoss ECL Comfort 310
- Circuits: up to 2 heating + DHW (depends on application key)
- Communication: Modbus RTU, M-Bus, Ethernet (SCADA/BMS integration)
- Application key: A2xx / A3xx series — ordered separately
- Power supply: 230 V AC
Applications
District heating substations for multi-unit residential, commercial and industrial buildings that require multi-loop control: heating + DHW, heating + ventilation + DHW, or two independent heating loops (radiator + underfloor). Suitable for district heating (DH) networks and local heat generation nodes. Delivery across the EU.
Technical specifications
| Parameter | Value |
|---|---|
| Code | 087H3040 |
| Type | Weather-compensated electronic controller |
| Circuits | 2 heating + DHW (per application key) |
| Power supply | 230 V AC ±10 %, 50/60 Hz |
| Power consumption | ≤ 10 VA |
| Ambient temperature | 0 → +55 °C |
| Display | Graphical, multilingual |
| Communication | Modbus RTU, M-Bus (via ECA add-on), Ethernet (via add-on) |
| Sensor type | Pt1000 (ESM/ESMT series) |
| Protection class | IP 41 |
| Required accessory | Application key (A230, A260, A266, A314, A317, A368, A376 etc.) |
Notes for the designer
ECL Comfort 310 will not operate without an application key — the key defines the project schematic (loop count, DHW logic, circulation, heat exchanger type). Choose the key against the project schematic before ordering. Optional ECA 30 / ECA 31 room panels allow remote monitoring and setpoint adjustment.
ECL 310 vs ECL 210 — when to choose
- Two independent heating loops are required (e.g. radiator + underfloor)
- SCADA/BMS integration via Modbus or Ethernet is mandatory
- Complex DHW schematics (circulation + priority control)
- Future expansion planned (ECA 30, ECA 31 remote panels)
B2B delivery and logistics
- Delivery across the EU (from warehouse in Vilnius, LT)
- Competitive B2B pricing for projects and bulk orders
- 30-day payment terms for companies (per contract)
- Free technical consultation on application key and sensor selection
Official Danfoss catalog: store.danfoss.com/087H3040
FAQ
Does the controller work without an application key?
No. Without a key inserted, ECL Comfort 310 shows a "no key" message and has no control logic. The key must be ordered alongside the controller.
Which sensors are compatible?
Danfoss Pt1000 series: ESMT (outdoor), ESMU (immersion / flow), ESMB (room), ESMC (surface / contact), ESMH (rod-type). Third-party Pt1000 sensors also work if they comply with IEC 751 class B.
ECL 310 vs ECL 210 — key differences?
ECL 310 — two-loop control + wider communication options (Modbus, M-Bus, Ethernet). ECL 210 — single-loop control with base functionality. Application keys are not interchangeable: A2xx for ECL 210, A3xx for ECL 310.
Can it be integrated into a building management system (BMS)?
Yes. Modbus RTU integrates with most BMS platforms (Ouman, Belimo, Siemens, Fidelix). Ethernet variants allow direct TCP/IP communication.
