Danfoss ECL Comfort 310 Data sheet

Data sheet

ECL Comfort 310 controller,

Designed in Denmark

Remote Control Units ECA 30 / 31 and Application keys

Description

ECL Comfort 310 controller
series

ECL 310

The ECL Comfort 310 is an electronic weather
compensated temperature controller in the ECL
Comfort controller family for use in district
heating, central heating and cooling systems.
Energy savings can be achieved by correct control
of the flow temperature in heating and cooling
systems. Up to 4 circuits can be controlled.

The weather compensation function in the ECL
Comfort controllers measures the outdoor
temperature and controls the flow temperature
to the heating system accordingly. The weather
compensated heating system increases the
comfort level and saves energy.

The ECL Comfort 310 controller is configured with
a selected application by means of an ECL
Application Key.

The web-based ECL Portal communicates with
the ECL Comfort 310 for an effective and easy-to­use turnkey SCADA (Supervisor y Control And Data
Acquisition) tool for all users, service personnel
and at commissioning. Service level can be
increased and/or service costs reduced. The
heating and/or cooling installation is made
accessible from virtually anywhere at any time via
laptops or Smartphones which increases service
level and reduces response time to alarms.

The ECL Tool software for ECL Comfort 310 offers
possibilities for an alternative remote control in
relation to ECL Portal and OPC server software.

ECL Comfort 310 is designed for comfortable
temperatures, optimum energy consumption,
easy installation by means of the ECL Application
Key (Plug-and-Play) and user-friendly operation.

Improved energy savings are facilitated by
weather compensation, adjustment of
temperature according to schedule, optimization
as well as limitation of return temperature, flow
and power.

The ECL Comfort 310 is easily operated by means
of a dial (multi-functional knob) or a Remote
Control Unit (RCU). The dial and the backlighted
display guide the user through the text menus in
the selected language.

The ECL Comfort 310 controller has electronic
output for motorized valve control, relay output
for circulation pump / changeover valve control
among others, as well as alarm output.

6 Pt 1000 temperature sensors can be connected.
In addition, 4 inputs are configured when
uploading the application. The configuration can
be Pt 1000 temperature sensor input, analogue
input (0 – 10 V) or digital input.

Depending on application, one of the internal
extension modules ECA 32 or ECA 35 (inserted into
the controller’s base part) can give additional input
and output signals.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

Description (continued) The enclosure is designed for mounting on wall

and DIN rail. A variant ECL Comfort 310B (without
display and dial) is available. It can be used for
mounting inside a panel and is operated by means
of the RCU ECA 30 / 31 which can be placed in
front of the panel.

The ECL Comfort 310 can work as a stand-alone
controller and communicate with up to two RCUs
and an extension module ECA 32 or ECA 35 with
additional inputs / outputs.

The ECL Comfort 310 can also work with up to 2 x
RCUs, ECA 32 / 35 and other ECL Comfort 210 / 296
/ 310 controllers via the ECL 485 communication
bus.

Ethernet connec tion is integrated in the controller.
Furthermore, Modbus communication to SCADA
systems (Supervisory Control and Data
Acquisition) and M-bus communication to heat
meters are integrated.

ECL Application Key
and applications:

Different ECL Application Keys make it easy for
the ECL Comfort 310 hardware to run different
applications. The ECL Comfort 310 controller is
loaded with the desired application by means of
the ECL Application Key, which contains
information about applications (basic application
sketches are shown in the display), languages,
factory settings and firmware.

Remote Control Unit (RCU):

The RCUs ECA 30 and ECA 31 are used for room
temperature control and override of the ECL
Comfort 310. The display has backlight. The RCUs
are connected to the ECL Comfort controllers by
means of 2 × twisted pair cable for communication
and power supply (ECL 485 communication bus).

The ECA 30 / 31 has a built-in room temperature
sensor. An external room temperature sensor can
be connected substitutin g the built-in temperature
sensor.

Furthermore, the ECA 31 has a built-in relative
humidity sensor and the signal is used in relevant
applications. It is possible to connect up to 2 RCUs
on the ECL 485 communication bus. One RCU can
monitor max. 10 ECL Comfort controllers (master/
slave system).

The ECL Application Keys, series A2xx can b e used
in ECL Comfort 210, ECL Comfort 296 and ECL
Comfort 310. Most of the A2xx application keys
give extended functionalities when used in ECL
Comfort 310, such as additional temperature
sensors and M-bus communication.
The ECL Application Keys, series 3xx can be used
in ECL Comfort 310 only.

The application parameters are stored in the
controller and are not affected by power break.
The relevant ECL Application Keys for the ECL
Comfort 210 / 296 / 310 controller can be found
in the ordering section.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

Application keys, overview,
sub-types included

ECL Comfort 210 / 296 ECL Comfort 310

Key

A214 A214.1, A214.2, A214.3, A214.4, A214.5,

A214.6

A217 A217.1, A217. 2, A 217.3 A217.1, A217. 2, A 217.3

A230 A230.1, A230.2, A230.3, A230.4 A230.1 *, A230.2 *, A230.3 *, A230.4 *

A231 A231.1, A 231.2 A231.1, A231.2

A232 A232.1 A2 32 .1

A237 A 2 37.1, A237. 2 A237.1, A2 37.2

A247 A 247.1, A247. 2, A3 47.3 A247.1, A 247. 2, A247. 3

A260 A26 0.1 A26 0.1

A266 A266.1, A266.2, A266.9, A266.10 A266.1 *, A266.2 **, A266.9 *, A266.10 *

A275 A275.1, A275.2, A275.3 A275.1, A275.2, A275.3

A319 A319.1, A319.2

A333 A333.1, A333.2, A333.3

A361 A361.1, A 361.2

A362 A3 62.1

A367 A 367.1, A367. 2

A368 A368.1, A368.2, A368.3, A368.4, A368.5,

A376 A376.1, A376.2, A376.3 *, A376.9, A376.10

A377 A 377.1, A377.2, A377.3

A390 A390.1, A390.2 *, A390.3, A390.11 *, A390.12 *,

A214.1, A214. 2, A214.3, A214 .4, A214. 5, A214.6
A314.1, A314.2, A314.3, A314.4, A314.5, A314.6,
A314.7, A314.9

A317.1, A317. 2

A331.1, A331. 2

A332.1, A332.2, A332.3, A332.4

A337.1, A 337. 2

A347.1, A3 47.2, A 3 47. 3

A375.1, A375.2, A375.3, A375.4, A375.5

A368.6

A390.13 *

*
When used in ECL 310 + ECA 32 / 35, 0 - 10 Volt controlled actuators can be used alternatively.

**
When used in ECL 310 + ECA 32 / 35 a 0 - 10 Volt controlled actuator can, alternatively, be used for the
heating circuit.

This is an overview of currently available application keys for the ECL Comfort controllers.
Not all keys are for sale in your country. Please contact your local Danfoss sales company.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

Application examples All mentioned components (S = temperature sensor, P = pump, M = Motorized control valve and so

on) are wired to the ECL Comfort ECL 210 / 296 / 310.

All applications from ECL Comfort 210 / 296 can run in ECL Comfort 310. Extra functions and
communication facilities are enabled.

A214.1, ex. a:
Cooling application, duct temperature based on room temperature.

S1

ECL 210 / 296 / 310

A1

M2

S5

X3

P2

F1

S3

S8S8S8

A214.2, ex. a:
Heating application, heating temperature based on duct temperature.

S1

ECL 210 / 296 / 310

A1

S4

Danfoss

87H2113.13

Danfoss

87H2118.12

P2

S3

X3

S6

S7

S5

M1

F1

S4

S8S8S8

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A214.3, ex. a:
Heating application, duct temperature based on room temperature.

S1

ECL 210 / 296 / 310

A1

M1

X3

S5

P2

S6

S7

F1

S3

S8S8S8

A214.5, ex. a:
Heating / cooling application, duct temperature based on room temperature.

S4

Danfoss

87H2120.12

S1

P2

X3

ECL 210 / 296 / 310

M1

S5

S6

S7

A1

F1

M2

S8S8S8

S3

S4

Danfoss

87H2124.12

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A314.1, ex. a:
Ventilation system with heating, passive cooling (outside air) and constant duct temperature
control. Analogue controlled passive cooling stage (M2).

S1

P2

M2

A

ECL 310

+ ECA 32

S3

X3

S6

A1

M1

S5

F1

S7

A314.1, ex. b:
Ventilation system with heating, cooling and duct temperature control.
Analogue controlled cooling stage (M2).

S1

ECL 310

+ ECA 32

A1

S4

S8S8S8

S2

S2

Danfoss

87H2133.12

Danfoss

87H2128.12

P2

S3

X3

S6

S7

S5

M1

F1

M2

A

S4

S8S8S8

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A314.2, ex. b:
Ventilation system with heating, cooling and room temperature control. Analogue controlled
cooling stage (M2).

S1

X3

ECL 310

+ ECA 32

M1

S5

A1

M2

A

S2

P2

S6

S7

F1

S8S8S8

S3

S4

A314.3, ex. a:
Ventilation system with heating and room temperature control. Speed controlled fan.

S1

ECL 310

S2

+ ECA 32

A1

Danfoss

87H2135.12

Danfoss

87H2131.12

S10

P2

X3

S6

S7

M1

S5

F1 / V1

S3

S4

S8S8S8

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A217.1, ex. a:
DHW tank charging application.

A217.1, ex. b:
DHW tank heating application.

S1

ECL 210 / 296 / 310

S2

M1

S5

A217.2, ex. a:
DHW tank charging with preheating circuit.

S1

S2 S3

S3

P1

ECL 210 / 296 / 310

S4

A1

A1

S6

S6

S8

P3

Danfoss

87H2068.13

Danfoss

87H2071.13

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M1

S5

P1

A

S8

B

P2

P3

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A217.3, ex. a:
DHW heating.

A217.3, ex. c:
DHW heating on demand (flow switch). With or without circulation.

A230.1, ex. a:
Indirectly connected heating system. Wind compensation as option.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A230.2, ex. a:
Indirectly connected cooling system (district cooling).

A230.3:
Indirectly connected heating system. Compensation for too high relative humidity (measured by
ECA 31). Wind compensation as option.

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A230.4:
Indirectly connected heating system. Static pressure measurement / alarm.
Monitoring of DHW - and DHW circulation return temperatures.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A231.2:
Indirectly connected heating system with 2-pump control and refill water function.

A331.2, ex. a:
Heating system with two-pump control and refill water function.
Supply temperature dependent flow temperature control.

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A232.1, ex. a:
Control of flow temperature (heating in floor / cooling in ceiling) in relation to outdoor, room
and dew point temperature.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A332.1, ex. a:
Control of flow temperature (heating in floor / cooling in ceiling) in relation to outdoor, room and
dew point temperature. Optional return temperature limitation.

A332.2, ex. a:
Separated control of flow temperatures for heating / cooling in relation to outdoor, room and dew
point temperature. Optional return temperature limitations.

A332.3:
Separated control of flow temperatures for heating / cooling in relation to outdoor, room and dew
point temperature. Optional return temperature limitations. Advanced instantaneous DHW
temperature control.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A332.4:
Control of flow temperature (heating in floor / cooling in ceiling) in relation to outdoor, room and
dew point temperature. External override of heating / cooling mode. Optional return temperature
limitation.

ECL 310

A1

S8

S7

S9

DanfossS187H1496.10

S6

M1

S3

X3

X2

S10

A237.1 / A337.1, ex. a:
Indirectly connected heating and DHW system.

S2

P1

S5

M2

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A237.2 / A337.2, ex. a:
Indirectly connected heating and DHW charging system.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A247.1, ex. a:
Indirectly connected heating and DHW tank charging system. Parallel mode or DHW priority.

A247.2, ex. a:
Indirectly connected heating and DHW tank charging system with preheating circuit.
Parallel mode or DHW priority.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A247.3, ex. a:
Indirectly connected heating and advanced DHW tank charging system with preheating circuit.
Parallel mode or DHW priority.

A347.1, ex. a:
Indirectly connected heating and DHW tank charging system. Parallel mode or DHW priority.

S1

M2

M1

S5

S2

S3

S4

ECL 310

B

A1

P1

S6

S8

P2

S7

A

P3

Danfoss

87H2057.11

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A347.2, ex. a:
Indirectly connected heating and DHW tank charging system with preheating circuit.
Parallel mode or DHW priority.

A260.1, ex. a:
Two heating systems.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A260.1, ex. d:
Two heating systems. Circuit 2 is a sub-circuit of circuit 1.

A266.1, ex. a:
Heating and direct DHW heating system. Parallel mode or DHW priority.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A266.2, ex. a:
Heating and direct DHW heating system. Parallel mode or DHW priority. DHW heating on demand
(flow switch).

A266.9, ex. a:
Heating and direct DHW heating system. Pressure monitoring / alarm. Universal alarm input. Parallel
mode or DHW priority.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A266.10, ex. a:
Heating and direct DHW heating system. Pressure monitoring / alarm. Universal alarm input. Parallel
mode or DHW priority. S7 is pulse based flow or energy meter for related limitation.

A275.1, ex. a:
Heating system with 1-stage boiler.

S1

S3

S5

B1

ECL 210 / 296 / 310

P1

Danfoss

A1

S7

*

87H2163.13

1

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A275.2, ex. a:
Heating system with 1-stage boiler and DHW tank.

S1

ECL 210 / 296 / 310

A1

S3

P1

S5

*

B1

P3

A275.3, ex. a:
Heating system with 1-stage boiler, mixing circuit and DHW tank.

S6

S7

Danfoss

87H2165.12

1

2

S1

ECL 210 / 296 / 310

Danfoss

87H2169.13

M2

S4

P4

S2

S3

P1

S5

B1

P3

*

S6

S8

2

S7

1

3

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A375.1, ex. a:
Up to 8 x boiler ON / OFF control for a heating circuit.

S1

S3

B1 B8

S5

ECL 310

+ ECA 32

P1

A1

S7

*

A375.2, ex. a:
Up to 8 x boiler ON / OFF control for a heating circuit and a DHW circuit. Optional DHW priority.

S1

S3

ECL 310

+ ECA 32

A1

S7

①

Danfoss

87H2182.10

Danfoss

87H2188.10

B1 B8

P1

S5

*

S6

①

②

P4

P3

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A375.3, ex. a:
Up to 8 x boiler ON / OFF control for a direct heating circuit (1), a mixing circuit (2) and a DHW circuit
(3). Optional DHW priority.

S1

S3

B1 B8

S5

ECL 310

+ ECA 32

M2

A1

S4

P4

S2

P1

*

S6

P3

A375.4, ex. a:
Heating system with 1-stage boiler ON / OFF controlled or 0 - 10 Volt controlled. Pressure
monitoring / alarm.

Danfoss

87H2189.10

S8

②

S7

①

③

S1

B1

V1

S3

S5

S9

P1

ECL 310

+ ECA 32

*

A1

S7

Danfoss

87H1544.10

1

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A

A

A

A

A

A

A

A

A375.5, ex. a:
Heating system with 1-stage boiler ON / OFF controlled or 0 - 10 Volt controlled. Mixing circuit for
second heating circuit. DHW tank heating. Pressure monitoring / alarm.

S1

S3

S5

B1

V1

Burner control overview:

ECL 310

Danfoss

M2

+ ECA 32

S4

A1

S8

P4

87H1545.10

2

S2

S9

P1

*

S7

1

S6

3

P5

P3

275.1

275.2

275.3

375.1

375.2

375.3

375.4

375.5

ECL 310ECL 210

R2 R2 R3 R4 R5

1

1

1

1

1

1

3 4

1

1

1

1

Triac 6

Triac 5

7

2

2

7

R7 R8 R9 R10

5

8

3

3

8

ECA 32

6

7

821

4

5

6

4

5

6

R2-R10 = relay nos. in ECL / ECA 32

A319.1:
Indirectly connected charging system with 2 temperature sensors in buffer. Heating system
connected directly to buffer. Pump P3 speed controlled in relation to differential pressure S9.

Danfoss

87H2185.11

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A319.2:
Indirectly connected charging system with 2 temperature sensors in buffer. Heating system
connected to buffer via mixing valve.
Pump P3 speed controlled in relation to differential pressure S9.

A333.1, ex. a:
Heating system with control of 1 or 2 circulation pumps. Refill water function with control of 1 or 2
pumps. Pressure measurements in the system.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A333.2, ex. a:
Heating system with ON / OFF and speed control of 1 or 2 circulation pumps. Refill water function
with ON / OFF and speed control of 1 or 2 pumps. Level control of refill water storage tank.
Pressure measurements in the system.

A333.3, ex. a:
Heating system with ON / OFF and speed control of 1 or 2 circulation pumps. Control valve M1 is 0 ­10 V controlled. Refill water function with ON / OFF and speed control of 1 or 2 pumps. Level control
of refill water storage tank. Pressure measurements in the system.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A361.2, ex. a:
2 x heating systems with two-pump control and refill water function. Supply temperature
dependent flow temperature control.

A362.1, ex. a:
Cascade control of heat exchangers.
Indirectly connected system with 2 x HEX, each managed by means of a 0 - 10 Volt controlled
motorized control valve (MCV). Each HEX circuit has its own circulation pump.
Cascade control can manage up to 6 heat exchangers by using additional ECL 310.

S1

V1

S5

V2

S6

ECL 310

+ ECA 32

S3

S4

S9

S10

A1

P1

P2

S8

S7

O1

O2

S15

S16

S2

V3 (0 - 10 V)

87H1754.10

Danfoss

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Other solutions, such as 3-point controlled actuators for control valves or a combination 0 - 10 V /
3-point, are possible.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A367.1, ex. a:
System with 2 heating circuits and secondarily connected DHW tank with internal heat exchanger.
Optional DHW priority.

S1

M2

M1

S4

S2

S3

S5

ECL 310

A1

P5

P1

S6

S8

P2

A367.2, ex. a:
System with 2 heating circuits and secondarily connected DHW tank charging system.
Optional DHW priority.

P3

Danfoss

S9

S7

87H2073.11

S1

S4

M2

S2

P1

S3

M1

S5

ECL 310

P5

P2

Danfoss

A1

S9

P4

S6

S8

87H2078.11

(S7)

(S7)

P3

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A368.2, ex. a:
Heating system with two-pump control and refill water function. Supply temperature dependent
flow temperature control. DHW heating system with control of 1 or 2 circulation pumps.

A368.4, ex. a:
Heating system with two-pump control and refill water function with 1 or 2 pumps. Supply
temperature dependent flow temperature control. DHW heating system with control of 1 or 2
circulation pumps. Pressure measurements in the systems.

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A368 has in total 6 subtypes with differences in temperature / pressure measurements and refill /
circulation pump control.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A376.1, ex. a:
Two heating circuits and one direct DHW heating system. Parallel mode or DHW priority.

S1

ECL 310

A1

S3

P2

M2

S5

S9

P3

M3

S10

S4

M1

S6

P1

A376.2, ex. a:
Two heating circuits and one direct DHW heating system. Parallel mode or DHW priority.
DHW heating on demand (flow switch).

Danfoss

87H2097.11

S2

1

S7

2

3

S1

M2

S5

M3

S10

S7

M1

S6

ECL 310

Danfoss

A1

S3

P2

S9

P3

S4

87H2099.11

(S2)

1

(S2)

2

3

S8

P1

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A376.3, ex. a:
Two heating circuits and one direct DHW heating system. Parallel mode or DHW priority. Control
valves M1, M2 and M3 are 0 - 10 V controlled.

S1

M2

S5

A

M3

S10

A

M1

S6

A

ECL 310

Danfoss

+ ECA 32

S3

P2

S9

P3

S4

A1

87H2101.11

S2

1

S7

2

3

P1

A376.9, ex. a:
Two heating circuits and one direct DHW heating system. Parallel mode or DHW priority. Pressure
measurements and temperature monitoring in the system.

30 | © Danfoss | 2020.01

A376.10 is like A376.9, but S11 and S12 are pressure sensors.

AI155886473192en-000602

Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A377.1, ex. a:
Two heating circuits and one DHW tank charging system. Parallel mode or DHW priority.

S1

ECL 310

Danfoss

87H2139.12

A1

S4

P5

M3

S2

S3

P2

M2

S5

S9

M1

S10

P1

S7

S6

A

S8

B

P4

P3

A377.2, ex. a:
Two heating circuits and one DHW tank charging system. Control of the DHW heating temperature.
Parallel mode or DHW priority.

S1

S4

M3

S2

S3

M2

S5

ECL 310

Danfoss

A1

P5

P2

M1

S9

P1

S10

S6

A

P3

S8

B

P4

87H2141.12

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A390.1, ex. a:
3 x indirectly connected heating circuits.

A390.2, ex. a:
3 x indirectly connected heating circuits; Actuators for control valves are controlled by 0 - 10 Volt
signal.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A390.3, ex. a:
3 x indirectly connected cooling circuits. Cooling to rooms can be based on Air Handling Units
(AHU).

A390.11, ex. a:
Three independent heating circuits. The heating circuits are indirectly con nected. DHW charging
circuit 4 is com bined with circuit 1.
Optional DHW priority.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

A390.12, ex. a:
Two indirectly connected heating cir cuits. One advanced DHW charging cir cuit.
Optional DHW priority.

S1

M3

S2

M2

S5

S9

M1

S10

P1

ECL 310

Danfoss

A1

S4

P5

S3

P2

S7

B

P4

S6

A

S8

P3

87H2139.12

A390.13, ex. a:
Two indirectly connected heating cir cuits and one DHW charging circuit. Always DHW charging
priority.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

Ordering Controller, base parts and accessories:

Typ e Designation Code no.

ECL Comfort 310 Universal hardware - 230 V a.c.

ECL Comfort 310 Universal hardware - 24 V a.c.

ECL Comfort 310B Universal hardware - 230 V a.c.

ECL Comfort 310 base part For mounting on wall or DIN rail (35 mm). ECL Comfort 210 can be mounted

Base part is not included. Installation guide (no text) is included.

Base part is not included. Installation guide (no text) is included.

Without display and dial. Requires a Remote Control Unit.
Base part is not included. Installation guide (no text) is included.

in an ECL Comfor t 310 base part (for future upgrade). Installation guide (no
text) and cable inlet accessories is included.

Remote Control Units and accessories

Typ e Designation Code no.

ECA 30 Remote Control Unit with an integrated room temperature sensor and

ECA 31 Remote Control Unit with an integrated room temperature sensor and a

ECA 30 / 31 frame kit for
mounting in panel front

ECA 32 Internal extension module with 6 inputs (Pt 1000 / analog / digital). 3 x

ECA 35 Internal extension module with 2 inputs (P t 1000 / analog / digital). 3 x

possibility for connecting an external Pt 1000 room temperature sensor.
Base part for mounting on wall included. Installation guide (no text) is
included.

humidity sensor. Possibility for connecting an external Pt 1000 room
temperature sensor. Used for dedicated applications. Base par t for mounting
on wall included. Installation guide (no text) is included.

For mounting in a panel cut-out.
Format 144 × 96 mm, actual cut-out 139 × 93 mm. Installation guide (no text)
is included.

analog (0 - 10 Volt) outputs. 4 x relay outputs. To be placed in the ECL 310
base part. See separate data sheet.

analog (0 - 10 Volt) outputs and 4 x PWM outputs. 4 x relay outputs. To be
placed in the ECL 310 base part. See separate data sheet.

087H304 0

087H304 4

087H3050

087H3230

087H3200

087H3201

087H3236

087H3202

087H3205

Accessories:

Typ e Designation Code no.

ECA 99 230 V a.c. to 24 V a.c. transformer (35 VA) 08 7B115 6

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© Danfoss | 2020.01 | 35

Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

ECL Application Keys

Typ e Application type description Controller output

A214

A217

A230

A231

A232

A237

A247

A260

• Temperature cont rol (heating / cool ing) of ventilation sy stems. Duct / ro om
temperature control. Return temperature limitation. Flow / power
limitation. Fire and frost protection as well as alarm function.

• The A214 applicatio n key contains applic ations related to ECL Com fort 310
for increased functionalities (control of rotating heat-exchanger).

• Advanced tem perature control o f DHW (Domestic H ot Water) circuit with/
without storage charging system. Circulation pump control. Return
temperature limitation. Frost protection and alarm function.

• The A217 application key co ntains applicat ions related to ECL Comf ort 296
/ 310 for increased functionalities (M-bus).

• (A230.1) Weather compensated flow temperature control of heating
systems. Circulation pump control. Room temperature control and sliding
return temp erature limita tion. Flow / power lim itation. Wind com pensation,
frost protection and alarm function.

• (A230.2) Flow temperature control of cooling systems. Compensation for
outdoor and room temperatures. Return temperature limitation.

• (A230.3) Weather compensated control of flow temperature in a heating
circuit. Room temperature compensation. Compensation for too high
relative humidity. Sliding return temperature limitation. Power / flow
limitation. Compensation for wind. Alarm function related to flow
temperature.

Monitoring of temperatures in self-acting temperature controlled DHW

circuit.

• (A230.4) Weather compensated control of flow temperature in a heating
circuit. Room temperature compensation. Sliding return temperature
limitation. Power / flow limitation. Alarm function related to flow
temperature and static pressure.

Monitoring of temperatures in self-acting temperature controlled DHW

circuit.

• The A230 application key works in ECL Comfort 296 / 310 for increased
functionalities (M-bus).

• The A230 application key works in ECL Comfort 310, including EC A 32, for
0 - 10 Volt control of actuator for control valve.

• Weather compensated flow temperature control of heating systems.
2-pump control for circulation and refill water function. Sliding return
temperature limitation. Frost protection and alarm function.

• The A231 applic ation key contains app lications relate d to ECL Comfort 310
for increased functionalities (2 pumps for refill water and M-bus).

• Weather compensated flow temperature control of heating / cooling
circuit(s). Automati c change-ove r between hea ting and cooling. Ci rculation
pump control. Dew point (cooling mode only) and surface temperature
compensation.

• The A232 appli cation key contains a pplications rel ated to ECL Comfort 310
for increased functionalities (return temperature limitation and separated
control of heating and cooling circuits).

• Weather compensated flow temperature control of heating systems.
Circulation pump control. Room temperature control and sliding return
temperature limitation. Flow / power limitation. Temperature control of
secondar ily connected DHW circuit with storage tank charging system or
storage tank with internal heat exchanger. Optional ON / OFF control of
the DHW circu it in connectio n with primarily con nected stora ge tank with
internal heat exchanger. DHW circulation pump control. Frost protection
and alarm function.

• The A237 appli cation key contains ap plications rel ated to ECL Comfort 29 6
/ 310 for increased functionalities (M-bus).

• Weather compensated flow temperature control of heating systems.
Circulation pump control. Sliding return temperature limitation. Flow /
power limitation. Temperature control of DHW circuit with storage tank
charging system. DHW circulation pump control through the storage tank
or the heat-exchanger. Frost protection and alarm function.

• The A247 applicat ion key contains app lications relate d to ECL Comfort 310
for increased functionalities (room temperature sensor and M-bus).

• Weather compensated flow temperature control of heating systems.
Circulation pump control, room temperature control and sliding return
temperat ure limitation fo r two independ ent heating circuit s. Flow / power
limitation, frost protection and alarm function.

• The A260 application key works in ECL Comfort 296 / 310 for increased
functionalities (M-bus).

signals

2 x 3-point, 2 x 2-point 087 H3811

1 x 3-point, 3 x 2-point 087H38 07

1 x 3-point, 2 x 2-point 087H3802

1 x 3-point, 3 x 2-point 087H3805

1 x 3-point, 3 x 2-point 08 7H38 12

1 x 3-point, 3 x 2-point 087H3806

2 x 3-point, 3 x 2-point 087H3808

2 x 3-point, 2 x 2-point 087H3801

Code no.

36 | © Danfoss | 2020.01

AI155886473192en-000602

Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

ECL Application Keys (continued):

Typ e Application type description Controller output

A266

A275 • Weather compensated flow temperature control of 1-stage boiler based

A319 • Weather compensated control of flow temperature in a heating circuit or

A333 • Weather compensated flow temperature control of a heating system.

A361 • Weather compensated flow temperature control of 2 heating circuits.

A362 • Weather compensated control of flow temperature in a heating circuit or

A367 • Weather compensated flow temperature control of 2 heating circuits.

A368 • Weather compensated flow temp erature control of a heating circuit.

A376 • Weather compensated flow temperature control of 2 heating circuits.

• Weather compensated flow temperature control of heating systems.
Circulation pump control, room temperature control and sliding return
temperature limitation.

• Temperature control of DHW circuit with DHW circulation. Return
temperature limitation, sliding DHW priority, frost protection and alarm
function. Optional control of DHW heating based on DHW demand.

• The A266 application key works in ECL Comfort 310 for increased
functionalities (M-bus).

• The A266 application key work s in ECL Comfort 310, including ECA 32, for
0 - 10 Volt control of actuators for control valves; exception: A266.2, DHW
circuit

heating systems. One direct heating circuit and one mixing circuit.
Circulation pumps control, room temperature control and sliding return
temperature limitation.

• Temperature control of DHW storage tank with internal heat exchanger.
Frost protection and alarm function.

• The A275 applica tion key contains app lications relate d to ECL Comfort 310
for increased functionalities (multiple boiler stages).

• The A375 application key (subtypes A375.4 and A375.5) works in ECL
Comfort 310, includ ing ECA 32, for 0 - 10 Volt control of bo iler temperatu re.

combined h eating / DHW circuit s based on an advan ced buffer tempe rature
control. Charging pump is speed controlled, based on 0 - 10 Volt or PWM
(Pulse Width Modulated) signal. Discharging of buffer is avoided according
to built-in lo gic. Differenti al pressure can be ma intained by means o f speed
controlled circulation pump (0 - 10 Volt or PWM).

Optional sliding return temperature limitation.
Relay output present for buffer heating demand; override signal for remote
setting of desired flow temperature.
Alarm functions are related to flow and buffer temperatures.

ON / OFF and spe ed control of 1 or 2 circulation pumps and sliding return
temperat ure limitation. Fl ow / power limitatio n. Frost protect ion and alarm
function. ON / OFF and speed control of 1 or 2 refill water pumps.
Refill water storage control. Pressure release function. Pressure and
temperature monitoring. Frost protection and alarm function.

Supply temperature dependent flow temperature control. 2-pump control
for circulation. Sliding return temperature limitation. Flow / power
limitaion. Refill water function. Frost protection and alarm function.

combined heating / DHW circuits, based on ad vanced cascade control of
2 heat exchangers (HEX). Control valve characteristics are taken into
consideration and flow in unused HEX circuit can be stopped.

Optional sliding return temperature limitation. Scheduled shift for inversed
cascade (HEX-1 - HEX-2 and HEX-2 - HEX-1) can be set. Override inputs for

start o f HEX-1 and HEX-2 are avail able. M-Bus bas ed signal can be used f or
flow / energy limitation.

Up to 6 heat excha ngers can be cas cade controlled b y 1, 2 or 3 ECL Comfo rt

310 control lers, each equipped with the application key A362; the ECL
controllers are interconnected by means of the ECL 485 Bus.

Alarm functions are related to flow and flow temperatures.

Circulation pump control. Room temperature control and sliding return
temperature limitation. Flow / power limitation.

• Temperature control of secondarily connected DHW circuit with storage
tank charging system or storage tank with internal heat exchanger.
Optional O N / OFF control of the DHW circ uit in connection w ith primarily
connected storage tank with internal heat exchanger.

DHW circulation pump control. Frost protection and alarm function.

Supply temperature dependent flow temperature control. 2-pump control
for circulat ion. Sliding ret urn temperature l imitation. Flow / p ower limitation
Flow / power limitation and refill water function.

• Temperature control of a DHW circuit with DHW circulation, return

temperature limitation and sliding DHW priorit y. Frost protection and
alarm function.

Circulation pump control. Room temperature control and sliding return
temperature limitation. Flow / power limitation.

• Temperature control of a DHW circuit with DHW circulation, return
temperat ure limitation an d sliding DHW prior ity. Optional cont rol of DHW
heating based on DHW demand. Frost protection and alarm function.

signals

2 x 3-point, 2 x 2-point 087H380 0

1 x 3-point, 4 x 2-point 087H3814

1 or 2 x 3-point, 4 x
2-point, 2 x 0 - 10 Volt
PWM

1 x 3-point, 7 x 2-point*
or
1 x 0 - 10 V control*, 7 x
2-point*

2 x 3-point, 7 x 2-point* 087H3804

2 x 3-point, 2 x 0 - 10
Volt, 3 x 2-point

2 x 3-point, 5 x 2-point 08 7H3813

2 x 3-point, 5 x 2-point 087H3803

3 x 3-point, 5 x 2-point
or
3 x 0 - 10 V control*, 5 x
2-point

Code no.

087H3847

087 H3818

087H3845

087H3810

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* ECA 32 module needed

© Danfoss | 2020.01 | 37

Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

ECL Application Keys (continued):

Typ e Application type description Controller output

A377

A390 • Weather compensated control of flow tem perature in up to three heating

• Weather compensated flow temperature control of 2 heating circuits.
Circulation pump control. Room temperature control and sliding return
temperature limitation. Flow / power limitation.

• Temperature cont rol of DHW circuit with sto rage tank charging system or
storage tank with internal heat exchanger. DHW circulation pump control.
Optional DHW heating temperature control. Frost protection and alarm
function.

circuits. Room temperature compensation and sliding return temperature
limitatio n. Heating circuits wo rk independent in pa rallel or circuit 2 and 3
after circuit 1.

Control of flow temperature in up to three cooling circuits.
Room temperature compensa tion and return temperature limitation.

Cooling cir cuits work indep endent in paralle l or circuit 2 and 3 af ter circuit

1.

Temperature control of DHW tank charging circuit. Control of DHW heating

temperature. Return temperature limitation. DHW priority possibility.

Alarm functions related to flow temperatures.
Optional co ntrol of motorized cont rol valves by means of anal og signal, 0

- 10 volt, (3 x heating circuits only).

signals

3 x 3-point, 5 x 2-point 08 7H3817

3 x 3-point, 3 x 0 - 10
Volt, 5 x 2-point

Code no.

087H3815

Each of the abovementioned code nos. comprises 1 ECL Application Key, 1 installation guide and 1
set of multi-lingual user guides.

Pt 1000 temperature sensors (IEC 751B, 1000 Ω / 0 °C):

Typ e Designation Code No.

ESMT Outdoor temperature sensor 08 4N1012

ESM-10 Room temperature sensor 087 B116 4

ESM -11 Pipe surface temperature sensor 087 B1165

ES MB-12 Universal temperature sensor 087 B118 4

ESMC Pipe surface temperature sensor incl. 2 m cable 087N0011

ESMU -100 Immersion sensor, 100 mm, copper 087 B118 0

ESM U-250 Immersion sensor, 250 mm, copper 0 87B 1181

ESMU -100 Immersion sensor, 100 mm, stainless steel 087B1182

ESM U-250 Immersion sensor, 250 mm, stainless steel 0 87B 1183

Typical ordering, types:

Reference, additional
products / software:

Accessories and spare par ts:

Pocket Immersion, stainless steel 100 mm, for ESMU-100, Cu (087B1180) 0 87 B119 0

Pocket Immersion, stainless steel 250 mm, for ESMU-250, Cu (087B1181) 087 B1191

Pocket Immersion, stainless steel 100 mm, for ESMB-12, (087B1184) 087 B1192

Pocket Immersion, stainless steel 250 mm, for ESMB-12, (087B1184) 087B1193

ECL Comfort Controller Base part Appl. key Remote Control Unit Temperature sensors Actuators /

ECL 310, 230 V a.c.
ECL 310 B, 230 V a.c.
ECL 310, 24 V a.c.

ECL Portal Access to the ECL Comfort 310 via a web browser.

ECL Tool Sof tware for laptop. Connect ECL Comfort 210 / 296 /

OPC server For ECL Comfort 310 (Modbus or TCP Ethernet

for ECL 310 A2xx

A3xx

After having arranged an account, access to the ECL
Comfort 310 can also be done via a Smar t phone.

310 directly to laptop for e.g. parameter lists,
commissioning reports.

connection).

ECA 30
ECA 31

ESMT (outdoor)
ESM-11 (pipe surface)
ESMC (pipe surface)
ESMU (immersion)
ESM-10 (roo m)
ESMB-12 (universal)

See separate data sheet

Download from Internet

See separate data sheet and download
from Internet

valves

see dedicated
literature

38 | © Danfoss | 2020.01

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

Operation

A

B

The graphical monochrome display (A) shows all
temperature values as well as status information
and is used for the setting of control parameters.
The display has backlight. Different favorite
displays can be selected. Navigation, browsing
and selecting the current item in the menus is
done by means of the dial (multi-func tional knob
(B)).

Examples of favorite displays:

The RCUs ECA 30 / 31 are used for remote setting
and override of ECL Comfort controller. By means
of the built-in room temperature sensor, the flow
temperature can be corrected to keep a constant
room temperature at comfort or saving
temperature. The ECA 30 / 31 is operated as an
ECL Comfort 310 with dial and backlighted display.

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© Danfoss | 2020.01 | 39

Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

Functions General functions:

• The ECL Comfort 310 has all the required
functions of a modern electronic temperature
controller for heating and DHW applications.

• The controller can be used as master or slave in
systems with master / slave ECL Comfort 210 /
310 controllers.

• The ECL Application Key contains the application
software for flexible configuration. Furthermore,
an update of the controller software is done
automatically, if required.

• The ECL Comfort 310 contains, besides the
standard functions, log and alarm functions.

• The built-in Real Time Clock gives automatic
summer / winter time changeover, week and
holiday schedule.

• Motor protection, which ensures stable control
and a long life of the motorized control valve, is
available for most of the applications. In periods
without heat demand, the motorized control
valve is exercised to avoid blocking.

• Scheduled control (Comfort and Saving mode)
is based on a week program. A holiday program
gives the possibility to select days with comfort
or saving mode.

• The ECL Comfort 310 can receive pulses from a
heat or flow meter to limit the power or the flow.
Alternatively, the data can come from heat or
flow meter via the M-bus connection.

• In many applications analogue input (0 – 10 V)
is configured for pressure measuring among
others. The scaling is set in the controller.

• Some applications are configured to handle
digital input. This function can be used to have
an external switch to run comfort or saving
mode or react on a flow switch signal.

• The control parameters, propor tional band (Xp),
integration time (Tn), running time of the
motorized control valve and neutral zone (Nz)
can be set individually for each output (3-point
control).

• Motorized control valves in some applications
can be controlled with a 0 - 10 V signal.

• Several applications fulfil the demand for refill
water function and / or 2-pump control.

• Some applications can speed control circulation
pumps by means of 0 - 10 Volt or PWM signal.

Heating functions:

• The heat curve (relationship between outdoor
temperature and desired flow temperature) is
set by means of 6 coordinate points or a slope
value. Max. / min. limitation of the desired flow
temperature can be set.

• In some application sub-types (for example
A337, A347, A367, A375 and A377) the desired
flow temperature can be set by means of a
voltage in the range 0 - 10 volt.

• The return temperature limitation can work in
relation to the outdoor temperature or be a fixed
value.

• The heating cut-out function can switch OFF the
heating and stop the circulation pump at high
outdoor temperatures.

• Based on the room temperature the ECL Comfor t
310 can correct the desired flow temperature in
order to increase the comfort level.

• The optimizer function ensures heating in the
desired periods (the lower outdoor temperature,
the earlier cut-in of the heating).

• The ramping function makes a smooth cut-in of
the heating valuable (district heating
installations).

• The boost function makes a powerful cut-in of
the heating (boiler based installations).

• The circulation pump is controlled in relation to
heat demand and frost protection. In periods
without heat demand, the circulation pump is
exercised to avoid blocking.

• The saving function gives two possibilities:

· reduced flow temperature with fixed
reduction or reduction in relation to outdoor
temperature (the lower the outdoor
temperature, the less the reduction),

· heating off, still with active frost protection.

DHW functions:

• The Auto Tuning function with automatic setting
of control parameters for constant DHW
temperature is integrated in the application
A217, A266, A368 and A376. However, Auto
Tuning is only applicable with valves that are
approved for Auto Tuning, i.e. the Danfoss types
VB 2 and VM 2 with split characteristic as well as
logarithmic valves such as VF and VFS.

• The anti- bacteria function can follow a sche dule
program.

• The heating circuit can have sliding DHW priorit y.

Communication The ECL Comfort 310 has:

• ECL 485 bus, non-galvanic isolated, for closed
communication between master, slave and
RCUs.

• RS 485 bus, galvanic isolated, for Modbus
communication to SCADA systems.

• M-bus, non-galvanic isolated, for M-bus
communication with meters.

• USB, type B, for ECL Tool (software for PC).

• Ethernet, RJ 45, for TCP / IP communication
to Internet (ECL Portal)

40 | © Danfoss | 2020.01

Master / slave connections

AI155886473192en-000602

Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

Languages

Menu languages are selectable among approx.
22 languages. See “Language list”.

General data ECL Comfort controller and RCU data:

ECL Comfort 310 / 310B ECA 30 / 31

Ambient temperature 0 - 55 °C

Storage and transportation temperature -40 - 70 °C

Installation Installation must be avoided if there is a risk for condensation (dew)

Mounting To be mounted on a vertical wall and

Connections Terminals in base part Terminals in base part

Number of inputs 8 in total:

Temperature sensor type Pt 1000 (1000 ohm at 0 °C), IEC 751B

Digital input 12 V pull-up possible

Analog input 0 - 10 V, resolution 9 bits -

Pulse input, frequency range
(selected applications)

Weight 0.46 / 0.42 kg 0 .14 kg

Display (ECL Comfort 310 and ECA 30 / 31
only)

Setting (ECL Comfort 310 and ECA 30 / 31
only)

Setting (ECL Comfort 310 B) ECA 30 / 31

Data logging Up to 10 days for 14 parameters

Min. backup time for time and date 72 hours -

Backup of settings and data Flash memor y Flash memory

Grade of enclosure IP 41 IP 20

-marking in accordance with the

standards

Temperature control Complies with EN 60730

*) Configured at application upload.

turned horizontally or on a DIN rail (35
mm)

6 temperature sensors
4*) Pt 1000 sensor, digital, analogue or
pulse

Range: -60 – 150 °C

Activation of a digital input must be
done with a potential free switch /
contact.

For monitoring: 0.01 - 200 Hz
For limitation: Minimum 1 Hz
(recommended) and regular pulses for
having a stable control.

Graphical monochrome with backlight
128 × 96 dots
Display mode: Black background, white text

Dial with intuitive push and turn function

EMC (ElectroMagnetic Compatibility Directive)
LVD (Low Voltage Directive)
RoHS (Restriction of Hazardous Substances Directive)

Furthermore, English is always uploaded in
parallel to the selected language.

To be mounted on a ver tical wall and
turned horizontally or in a panel
cut-out

-

Alternative to built-in room
temperature sensor: P t 10 00 (1000 ohm
at 0 °C),
IEC 751B

-

-

AI155886473192en-000602

ECL application key:

Storage type Flash memory

Segmentation Part 1: Application data, not changeable

Part 2: Factory settings, not changeable
Part 3: Updating SW for the ECL Comfort controller, not changeable
Part 4: User settings, changeable

Applications A2xx keys work in ECL Comfort 210 and ECL Comfort 310

A3xx keys work in ECL Comfor t 310 only

Lock function If not inser ted in the ECL Comfort controller, all set tings can be seen, but not

changed

Menu languages Menu languages are selectable among approx. 22 languages. See “Language list”.

© Danfoss | 2020.01 | 41

Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

ECL 485 communication bus data:

Purpose Only for internal connec tions between ECL Comfort 210 / 296 /

Connection Terminals in base part

Cable type Shielded cable, 2 x twisted pair,

Max. total cable length (bus cable + sensor cables) 200 m in total (inclusive sensor cables)

Max. number of ECL slaves connected Units with unigue address (1 - 9): 9

Max. number of Remote Control Units connected 2

Data sent from master Date

Data sent from addressed slave controller Desired flow temperature from each circuit

Data sent from ECA 30 / 31

310 and ECA 30 / 31. (Danfoss proprietary bus)

Non-galvanic isolated

Min. cross section: 0,22 mm (AWG 24).
Examples:
LiYCY 2 × 2 × 0.25 mm2 (AWG 24) or Ethernet CAT5

Units with address “0”: 5

Time
Outdoor temperature
Desired room temperature
DHW-priority signal

• Actual and desired room temperature

• Function selector mode

• (ECA 31) Relative humidit y

Modbus communication data:

Purpose For SCADA system

Connection Terminals 34 and 35 in base part. Modbus reference (terminal

Protocol Modbus RTU

Cable type Shielded cable, 2 x twisted pair + Signal GND.

Max. bus cable length 1200 m (dependent on cable t ype and installation).

Communication speed Half duplex.

Serial mode 8 data bit, even parity and 1 stop bit.

Network According to the standard Modbus Serial Line Implementation

36) must be connected.
Galvanic isolated (500 V ).

Min. cross section: 0,22 mm2 (AWG 24).
Example: LiYCY 2 × 2 × 0.25 mm2 (AWG 24)

9,6 Kbit/s (default) / 19.2 Kbit/s / 38.4 Kbit/s

Guide V1.0.

M-bus communication data:

Purpose Connection to heat meters, max. 5 heat meters

Connection Terminals 37 and 38 in base par t.

M-Bus master according to DS / EN 1434-3: 1997

Cable type 2 x 0,8 mm2

Max. cable length 50 m

Baud rate 300 baud (adjustable)

Update time 60 s (adjustable)

Gateway function Allows the ECL Portal to read energy meters directly

Supported heat meters Infocal 6 and many other marks and types.

Transmitted heat meter data Heat meter type dependent:

Recommendations: Danfoss recommends 230 V a.c. supplied heat meters

Non-galvanic isolated

Example: JY(St)Y 2 x 0.8 mm2 (not twisted pair)

Information about other heat meters on request

• Primary flow temperature

• Primary return temperature

• Actual flow / accumulated flow

• Actual heat / power

• Accumulated heat energy

USB communication data:

USB CDC (Communication Device Class) For service purposes

Modbus over USB Similar to the serial Modbus, but with relaxed timing

Connection, cable type Standard USB cable (USB A ----- --- USB B)

(Windows driver is needed, to enable that Windows
recognize the ECL as a virtual COM port)

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

Ethernet communication (Modbus / TCP) data:

Purpose For SCADA system

Connection RJ45 female connector

Protocol Modbus / TCP

Cable type Standard Ethernet cable (CAT 5)

Max. Bus cable length According to Ethernet standard

Auto cross-over detection Enabled

Default Ethernet address (IP address) 192.16 8.1.100

Port number 502 (Modbus / TCP por t)

Number of connections 1

Security Must be provided by Ethernet infrastructure

A port: USB (type B female plug)
B port: Ethernet (RJ45, female plug)
C port: ECL Application Key

Language list

Comparison with
ECL Comfort 210 / 296

Bulgarian Estonian Latvian Slovak

Croatian Finnish Lithuanian Slovenian

Czech French Polish Spanish

Danish German Romanian Swedish

Dutch Hungarian Russian

English Italian Serbian

The selected language + English is uploaded at application upload.

ECL Comfort 310 ECL Comfort 210 ECL Comfort 296

M-bus communication Ye s No Yes

Modbus connection Yes, galvanic isolated Yes, non-galvanic isolated Yes, galvanic isolated

Ethernet Yes, RJ45 connection, Modbus /

Inputs 10 8 8

Relay outputs 6 4 4

Valve actuator outputs 3 x 3-point 2 x 3-point 2 x 3-point

Extension of inputs / outputs Yes, ECA 32, placed in base part.

Application keys A2xx and A3x x A2xx A2xx

Front dimensions
(W x H, mm)

Supply voltage 230 V and 24 V 230 V 230 V

TCP. For SCADA solutions and ECL
Portal

• 6 inputs

• 2 pulse inputs

• 3 analogue outputs (0 - 10 V)

• 4 relays
Alternative, ECA 35:

• 2 inputs

• 2 pulse inputs

• 3 analogue outputs (0 - 10 V)

• 4 PWM outputs

• 4 relays

220 x 110 220 x 110 144 x 96

No Yes, RJ45 connec tion,

Modbus / TCP. For SCADA
solutions and ECL Portal

No No

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

Wiring - 230 V a.c.

ECL Comfort 310 wiring example

Supply voltage 230 V a.c. - 50 Hz

Voltage range 207 to 244 V a.c. (IEC 60038)

Power consumption 5 VA

Max. load on relay outputs 4(2) A - 230 V a.c. (4 A for ohmic load,

Max. load on triac outputs for actuators 0.2 A - 230 V a.c.

2 A for inductive load)

Wiring - 24 V a.c.

ECL Comfort 310 wiring example

Do not connect 230 V a.c. powered components to a 24 V a.c. power supplied controller directly.
Use auxiliary relays (K) to separate 230 V a.c. from 24 V a.c.

Supply voltage 24 V a.c. - 50 Hz

Voltage range 21.6 to 26.4 V a.c. (IEC 60038)

Power consumption 5 VA

Max. load on relay output 4(2) A - 24 V a.c. (4 A for ohmic load,

2 A for inductive load)

Max. load on triac outputs for actuators 1 A - 24 V a.c.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

Wiring - input

Wiring - ECA 30 / 31 Remote
Control Unit

Base part

Dimensions

Wiring of ECL Comfort 310 / 310B and ECA 30 / 31

Supply voltage From ECL 485 communication bus

Power consumption 1 VA

External room temperature sensor Pt 100 0 (ESM-10), substitutes the built-in room temperature

sensor

ECA 31 only Contains humidity sensor, used for special applications

ECL Comfort 310 base part (can be used for ECL Comfort 210 too).

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

ECL Comfort 310B

ECA 30 / 31 cut-out for
mounting in panel front

ECA 30 / 31

ECA 32

A frame (code no. 087H3236) is placed in the cut­out (139 × 93 mm) in which the ECA 30 / 31 is
placed.

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

Tender text: Electronic controller for heating and domestic hot water applications

1a

Electronic weather compensator for flow temperature control in heating and domestic hot water
installations.
Turn-push-dial, backlighted graphic display and menu-based operation in local languages.
The controller can operate multiple application uploaded by means of application software keys.

1b

• Heat curve setting in 6 coordinates or as slope.

• Flow temperature limitations.

• Room temperature compensation and Comfort / Saving periods according to week schedule.

• Holiday schedule.

• Return temperature limitation as a fixed value (DHW) or in relation to outdoor temperature
(heating).

• Pumps controlled in relation to heat demand and frost protection.

• Alarm functions and log pictures for all sensors.

• Manuel override of the individual outputs.

• Communication: M-bus (up to 5 meters), Modbus, Ethernet (e.g. internet connection to ECL Portal),
ECL 485 (internal data bus).

• Connection for commissioning / service via PC

• 6 temperature sensor (Pt 1000) inputs.

• 4 application related and configured inputs.

• 6 relay outputs

• 3 pairs of electronic output for noiseless operation of the motorized control valve.

Remote control unit ECA 30 / 31:

• Turn-push-dial, backlighted graphic display

• Integrated room temperature sensor

• Integrated humidity sensor (ECA 31 only)

Extension module ECA 32 enables:

• Additional 6 configurable inputs

• 2 pulse counters

• 4 relay outputs

• 3 analogue outputs

Extension module ECA 35 enables:

• Additional 2 configurable inputs

• 2 pulse counters

• 4 relay outputs

• 3 analogue outputs

• 4 PWM outputs

1c

Main data:

• Supply voltage, 230 V a.c., 50 Hz: ECL 310 and ECL 310 B

• Supply voltage, 24 V a.c., 50 Hz: ECL 310

• Power consumption: max. 5 VA

• Ambient temperature: 0 – 55 °C

• Storage temperature: -40 – 70 °C

2

Product characteristics:

• Protection class: IP 41

• DIN rail adaptor integrated

• Dimension (inclusive base part) L*W*H, 220*110*80 mm

• Ordering code no.: ECL Comfort 310, 230 V: 087H3040

• Ordering code no.: ECL Comfort 310B, 230 V: 087H3050

• Ordering code no.: ECL Comfort 310, 24 V: 087H3044

• Ordering code no.: Base part for ECL Comfort 310 / 310B: 087H3230

• Ordering code no.: ECA 30: 087H3200

• Ordering code no.: ECA 31: 087H3201

• Ordering code no.: ECA 32: 087H3202

• Ordering code no.: ECA 35: 087H3205

• Ordering code no. for application key depends on preferred application

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Data sheet ECL Comfort 310 controller, Remote Control Units ECA 30 / 31 and Application keys

Additional documentation for ECL Comfort 310, modules and accessories is available on http://heating.danfoss.com/ or
http://store.danfoss.com/

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