Danfoss C67 User Manual

C67

C67

VI.KM.F1.02

2005.09

VI.KM.F1.02

2005.09

www.danfoss.com

User's Guide 

Installer's Guide 

www.danfoss.com

ECL Comfort

Installer's Guide

ECL Comfort

User's Guide

*087R8147*

*VIKMF102*

*087R8147*
*VIKMF102*

Double mixing controller with DHW control

The shown diagram is a fundamental and simplified example and
does not contain all components that are necessary in a system.

If the system you are about to install differs from the shown
diagram of a standard heating system, feel free to sketch an outline
for comparison. Adaptation of systems, see section 10.

List of components:

ECL Comfort 300

S1 Outdoor temperature sensor

S2 Flow temperature sensor, circuit I

(and charging temperature sensor, DHW circuit)

S3 Return temperature sensor, circuit I

S4 Flow temperature sensor, circuit II

S5 Return temperature sensor, circuit II

(or charging temperature sensor, DHW circuit
or lower tank temperature sensor)

S6 Upper tank temperature sensor

P1 Circulation pump, heating, circuit I

P2 Circulation pump, heating, circuit II

P3 Circulation pump, DHW

M1 Motorized control valve, circuit I

M2 Motorized control valve, circuit II

Circuit

indicator

Circuit

selector

Shift

button

Adjust-

ment

Controller

mode

Controller mode

Manual operation (used only at maintenance

and service)

Scheduled operation

Constant comfort temperature

Constant setback temperature

Standby mode

Arrow buttons. Switch between the lines of the ECL

Card.

Shift button. Switches between temperatures,

changeover points etc.

Adjust temperatures and values etc.

Circuit selector for switching between the circuits.

Safety Note

To avoid injury of persons and damages to the device, it is

absolutely necessary to read and observe these instructions

carefully.

Necessary assembly, start-up, and maintenance work must be

performed by qualified and authorized personnel only.

This guide is associated with ECL Card 087B4820

Installer:

By:

Date:

Table of Contents

Sections in the Installer’s Guide

The documentation for the ECL Comfort controller is
composed of numbered sections. Only sections relevant to
your ECL Comfort controller are included here.

Before you start

Installation

10 Identifying the system type
11 Mounting the ECL Comfort controller
12 Electrical connections 230 V a.c.
13 Electrical connections 24 V a.c.
14 Connecting and placing the temperature sensors
15 Inserting the ECL Card

Basic Set-up

16 Adjusting the ECL Card settings
17 Setting the time and date - line A
18 Monitoring temperatures and system units - line B
19 Manual control - line B
20 Setting the heat curve - line C
21 Heating cut-out - line 1
22 Flow temperature limits - line 2
23 Room temperature influence - line 3
26 Control parameters - lines 4-7

Control & Overviews

29 Check list
30 ECL Card settings
31 Service parameters

Extended Service

32 Adjusting the service parameters

Miscellaneous

34 Copying with the ECL Card

User's Guide (turn the guide over for sections 1-7)

1 Choose your favorite display
2 Select circuit mode
3 Set your room and DHW charging temperature
4 Set your personal schedule
5 Advantages of the ECL Card
6 Hot points
7 Definitions

VI.KM.F1.02

Card C67

2005.09

Sketch your application

The ECL Comfort controller series is designed for a wide
range of heating, hot-water and cooling systems with
different configurations and capacities.
If your system differs from the diagrams shown in section
10, you may want to make a sketch of the system about to
be installed. This makes it easier to use the Installer’s Guide,
which will guide you step-by-step from installation to final
adjustments before the end-user takes over.

The controller is pre-programmed with factory settings that are
shown in the relevant sections of this guide.

However, you might come across some settings that are not listed
in this instruc tion. These settings could be related either to recent
updates or the use of optional modules (which are described in
the instructions in question).

How to use this guide

This guide is divided into two parts:

• User’s Guide: Yellow sections 1-7

• Installer's Guide: Grey sections 10 and onwards

The application C67 is very flexible. These are the basic
principles:

Heating:
Typically, the flow temperature is always adjusted according to
your requirements.
The flow temperature sensors S2 (circuit I) and S4 (circuit II) are
the most important sensors. The desired flow temperatures at S2
and S4 are calculated in the ECL controller, based on the outdoor
temperature (S1). The lower the outdoor temperature, the higher
the desired flow temperature.
The motorized control valves M1 (circuit I) and M2 (circuit II) are
opened gradually when the flow temperature is lower than the
desired flow temperature and vice versa.
The return temperature, S3 (circuit I) and (if available) S5 (circuit
II) to the district heating supply should not be too high. If so,
the desired flow temperature can be adjusted (typically to a
lower value), thus resulting in a gradual closing of the motorized
control valve / valves. In boiler-based heating supply the return
temperature should not be too low (same adjustment procedure
as above).
If the measured room temperature does not equal the desired
room temperature, the desired flow temperature / temperatures
can be adjusted.

DHW:
If the measured DHW temperature is lower than the desired DHW
heating temperature minus the cut-in difference, the desired flow
temperature at S2 is increased in order to heat the DHW. DHW
heating can have priority, i.e. pump P3 is ON and the pump P1 is

OFF (or changeover valve is activated and P1 is still ON).

Before you start

Installation

The ECL Comfort controller is a universal controller that can
be used for various systems. Based on the shown standard
systems, it is possible to configure additional systems.

In this section you find the most frequently used systems. If
your system is not quite as shown below, find the diagram
which has the best resemblance with your system and make
your own combinations.

The functions can only be realized with ECL Comfort 300 and as of
controller version 1.08.

10.1 Two indirectly connected heating systems
and secondarily connected storage tank
with built-in heating coil

System settings

Circuit Line Description Recomm.

setting

I 17 Influence on desired flow temp. OFF
I 43 Priority or parallel operation 99

I 51

DHW charging pump /
changeover valve

OFF

I 53

Desired flow temperature at
DHW charging

OFF

I 67

Adaptive function of S2 flow
temperature during DHW
charging

OFF

I 140

Function of temperature sensor
S5

0 (1)

I 152

Max limitation temperature at
sensor S2 during DHW charging

90

System diagrams in this instruction are principal drawings and do
not contain all components which are necessary in your systems.

Identifying the system type

10a

Installation

10.1a Two indirectly connected heating systems
and secondarily connected storage tank
with built-in heating coil

System settings

Circuit Line Description Recomm.

setting

I 17 Influence on desired flow temp. OFF
I 43 Priority or parallel operation OFF

I 51

DHW charging pump /
changeover valve

ON

I 53

Desired flow temperature at
DHW charging

OFF

I 67

Adaptive function of S2 flow
temperature during DHW
charging

OFF

I 140

Function of temperature sensor
S5

0 (1)

I 152

Max limitation temperature at
sensor S2 during DHW charging

90

10b

Installation

10c

10.2 Two indirectly connected heating systems
and primarily connected storage tank with
built-in heating coil

System settings

Circuit Line Description Recomm.

setting

I 17 Influence on desired flow temp. OFF

I 51

DHW charging pump /
changeover valve

OFF

I 53

Desired flow temperature at
DHW charging

ON

I 67

Adaptive function of S2 flow
temperature during DHW
charging

OFF

I 140

Function of temperature sensor
S5

0 (1)

I 152

Max limitation temperature at
sensor S2 during DHW charging

90

Installation

10.3 Indirectly connected heating system with
or without mixing loop and primarily
connected storage tank with built-in heating
coil

System settings

Circuit Line Description Recomm.

setting

I 17 Influence on desired flow temp. 3
I 43 Priority or parallel operation 99

I 51

DHW charging pump /
changeover valve

OFF

I 53

Desired flow temperature at
DHW charging

OFF

I 67

Adaptive function of S2 flow
temperature during DHW
charging

OFF

I 140

Function of temperature sensor
S5

0 (1)

I 152

Max limitation temperature at
sensor S2 during DHW charging

90

Heating circuit II can only be operated against heating circuit I.
This means that heating circuit II cannot be supplied if heating
circuit I is deactivated.

10d

Installation

10e

10.4 Indirectly connected heating system with
or without mixing loop and secondarily
connected storage tank with built-in heating
coil

System settings

Circuit Line Description Recomm.

setting

I 17 Influence on desired flow temp. 3
I 43 Priority or parallel operation 99

I 51

DHW charging pump /
changeover valve

OFF

I 53

Desired flow temperature at
DHW charging

OFF

I 67

Adaptive function of S2 flow
temperature during DHW
charging

OFF

I 140

Function of temperature sensor
S5

0 (1)

I 152

Max limitation temperature at
sensor S2 during DHW charging

90

Heating circuit II can only be operated against heating circuit I.
This means that heating circuit II cannot be supplied if heating
circuit I is deactivated.

Installation

10.4a Indirectly connected heating system with
or without mixing loop and secondarily
connected storage tank with built-in heating
coil

System settings

Circuit Line Description Recomm.

setting

I 17 Influence on desired flow temp. 3
I 43 Priority or parallel operation OFF

I 51

DHW charging pump /
changeover valve

ON

I 53

Desired flow temperature at
DHW charging

OFF

I 67

Adaptive function of S2 flow
temperature during DHW
charging

OFF

I 140

Function of temperature sensor
S5

0 (1)

I 152

Max limitation temperature at
sensor S2 during DHW charging

90

Heating circuit II can only be operated against heating circuit I.
This means that heating circuit II cannot be supplied if heating
circuit I is deactivated.

10f

Installation

10g

10.5 Indirectly connected heating system with
or without mixing loop and secondarily
connected storage tank

System settings

Circuit Line Description Recomm.

setting

I 17 Influence on desired flow temp. 3
I 43 Priority or parallel operation 99

I 51

DHW charging pump /
changeover valve

OFF

I 53

Desired flow temperature at
DHW charging

OFF

I 67

Adaptive function of S2 flow
temperature during DHW
charging

20

I 140

Function of temperature sensor
S5

2

I 152

Max limitation temperature at
sensor S2 during DHW charging

70*

* Line 152 = desired charging temperature

Heating circuit II can only be operated against heating circuit I.
This means that heating circuit II cannot be supplied if heating
circuit I is deactivated.

Installation

10.5a Indirectly connected heating system with
or without mixing loop and secondarily
connected storage tank

System settings

Circuit Line Description Recomm.

setting

I 17 Influence on desired flow temp. 3

I 51

DHW charging pump /
changeover valve

ON

I 53

Desired flow temperature at
DHW charging

OFF

I 67

Adaptive function of S2 flow
temperature during DHW
charging

20

I 140

Function of temperature sensor
S5

2

I 152

Max limitation temperature at
sensor S2 during DHW charging

70*

* Line 152 = desired charging tempe rature

Heating circuit II can only be operated against heating circuit I.
This means that heating circuit II cannot be supplied if heating
circuit I is deactivated.

10h

Installation

For easy access, you should mount the ECL Comfort
controller near the system. Select one of the three
following methods:

• Mounting on a wall

• Mounting on a DIN rail

• Mounting in a panel

Screws and rawlplugs are not supplied.

Mounting on a wall

Socket for mounting on wall: Order code No. 087B1149.
Mount the terminal box on a wall with a smooth surface.
Establish the electrical connections and position the
controller in the box. Secure the controller with the fixing
screw.

Mounting on a DIN rail

Mounting kit: Order code No. 087B1145.
A mounting kit is necessary to mount the box with the
controller on a DIN rail.

Mounting in a panel

Connector set: Order code No. 087B1148.
The panel plate thickness must not exceed 3 mm.
Prepare a cut-out with the dimensions 93 x 139 mm. Pull off
the right side of the lid by means of a screwdriver.
Insert the controller into the panel cut-out and fix it with the
two locks which are placed diagonally in two corners of the
controller.

Mounting the ECL Comfort
controller

11a

Installation

11b

Installation

Electrical connections ­230 V a.c. - in general

12a

230 V a.c. connections - without safety thermostat

Establish these jumpers:
1-5-8-10-12-14
and jumper 2 to common N-terminal

If an ECA 80 module is to be applied, the jumpers 14-26-29
must be established additionally.

230 V a.c. connections - with safety thermostat

This circuit diagram is only valid if Danfoss actuators are used

Establish these jumpers:
1-10-12-14
and jumper 2 to common N-terminal

Safety thermostat:
4, 5 and 10 with ST- (safety thermostat)
and jumper 2 to common N-terminal.

If an ECA 80 module is to be applied, the jumpers 14-26-29
must be established additionally.

Optio nal

Optio nal

Installation

Terminal Description Max. load

1 L Supply voltage 230 V a.c.
2 N Supply voltage 230 V a.c.
3 M1 Actuator - open, circuit I 0.2 A / 230 V a.c.
4 M1 Actuator - close, circuit I 0.2 A / 230 V a.c.

5

230 V a.c. supply voltage for M1,

circuit I
6 M2 Actuator - open, circuit II 0.2 A / 230 V a.c.
7 M2 Actuator - close, circuit II 0.2 A / 230 V a.c.

8

230 V a.c. supply voltage for M2,

circuit II

9 P1

Circulation pump for heating

circuit II

4 (2) A / 230 V a.c.

10

230 V a.c. supply for pump relay

R1

11 P2

Circulation pump for heating

circuit II

12

230 V a.c. supply for pump relay

R2

13 P3

Circulation pump for DHW /

changeover valve ON / OFF

4 (2) A / 230 V a.c.

14

230 V a.c. supply for pump relay

R3

Wire cross section: 0.75 - 1.5 mm

2

Electrical connections

Max. 2 x 1.5 mm2 wires can be inserted into each screw terminal.

Incorrect connection can damage the TRIAC outputs. Max. load
(terminals 3, 4, (6 and 7)) 0.2 A / 230 V a.c.!

Option :
Relay module ECA 80 (contacts: max. load 4 (2) A / 230 V a.c.)
25 (P4) Circulation pump
28 (P5) Storage charging pump

12b

Installation

Electrical connections ­24 V a.c. - in general

13a

24 V a.c. connections - without safety thermostat

Establish these jumpers:
1-5-8-10-14
and jumper 2 to common N-terminal

If an ECA 80 module is to be applied, the jumpers 14-26-29
must be established additionally.

24 V a.c. connections - with safety thermostat

This circuit diagram is only valid if Danfoss actuators are used

Establish these jumpers:
1-10-12-14
and jumper 2 to common N-terminal

Safety thermostat:
4, 5 and 10 with ST- (safety thermostat)
and jumper 2 to common N-terminal.

If an ECA 80 module is to be applied, the jumpers 14-26-29
must be established additionally.

Optio nal

Optio nal

Installation

Terminal Description Max. load

1 L Supply voltage 24 V a.c.
2 N Supply voltage 24 V a.c.
3 M1 Actuator - open, circuit I 1.0 A / 24 V a.c.
4 M1 Actuator - close, circuit I 1.0 A / 24 V a.c.

5

24 V a.c. supply voltage for M1,

circuit I
6 M2 Actuator - open, circuit II 1.0 A / 24 V a.c.
7 M2 Actuator - close, circuit II 1.0 A / 24 V a.c.

8

24 V a.c. supply voltage for M2,

circuit II

9 P1

Circulation pump for heating

circuit I

4 (2) A / 24 V a.c.

10

24 V a.c. supply for pump relay

R1

11 P2

Circulation pump for heating

circuit II

12

24 V a.c. supply for pump relay

R2

13 P3

Circulation pump for DHW /

changeover valve ON / OFF

4 (2) A / 24 V a.c.

14

24 V a.c. supply for pump relay

R3

Wire cross section: 0.75 - 1.5 mm

2

Electrical connections

Max. 2 x 1.5 mm2 wires can be inserted into each screw terminal.

Incorrect connection can damage the TRIAC outputs. Max. load
(terminals 3, 4, (6 and 7)) 1.0 A / 24 V a.c.!

Option :
Relay module ECA 80 (contacts: max. load 4 (2) A / 230 V a.c.)
25 (P4) Circulation pump
28 (P5) Storage charging pump

13b

Installation

Connecting the temperature sensors and the bus

Terminal Description Type (recomm.)

15 and 16 System device bus*,

connections for room
panel** / remote control** /
(relay module)

ECA 60 / 62
ECA 61 / 63

17 and 16 S1 Outdoor temperature

sensor

ESMT

18 and 16 S2 Flow temperature sensor,

circuit I
(and charging temperature
sensor, DHW circuit)

ESM-11 / ESMC /
ESMU

19 and 16 S3 Return temperature sensor ESM-11 / ESMC /

ESMU

20 and 16 S4 Flow temperature sensor,

circuit II

ESM-11 / ESMC /
ESMU

21 and 16 S5 Return temperature sensor,

circuit II
or charging temperature
sensor, DHW circuit
or lower tank temperature
sensor

ESM-11 / ESMC /
ESMU

ESMU / ESMB

22 and 16 S6 Upper tank temperature

sensor

ESMU / ESMB

* The system device bus / room panel / remote control is only active
when the outdoor te mperature sensor is connected.
** Either room temperature sensor or room panel / remo te control

Establish the jumper from 16 to common terminal.

Wire cross section for sensor connections:
Min. 0.4 mm

2

Total cable length: Max. 125 m (all sensors incl. system device

bus)

Cable lengths of more than 125 m may cause noise sensibilit y
(EMC).

Connecting and placing the
temperature sensors

14a

Installation

It is important that the sensors are mounted in the correct
position in your system.

The temperature sensor mentioned below are sensors used
for the ECL Comfort 200 and 300 series which not all will be
needed for your application!

Outdoor temperature sensor (ESMT)

The outdoor sensor should be mounted on that side of the
building where it is less likely to be exposed to direct
sunshine. It should not be placed close to doors, windows or
air outlets.

Flow temperature sensor (ESMU, ESM-11 or ESMC)

Place the sensor max. 15 cm from the mixing point. In
systems with heat exchanger, Danfoss recommends that the
ESMU-type to be inserted into the exchanger flow outlet.

Make sure that the surface of the pipe is clean and even
where the sensor is mounted.

Return temperature sensor (ESMU, ESM-11 or ESMC)

The return sensor should always be placed in / on a pipe with
return water flow.

Room temperature sensor (ESM-10, ECA 60 / 62 room
panel or ECA 61 / 63 remote control)

Place the room sensor in the room where the temperature is
to be controlled. Do not place it on outside walls or close to
radiators, windows or doors.

DHW temperature sensor (ESMU or ESMB-12)

Place the DHW temperature sensor according to the
manufacturer’s specification.

Boiler temperature sensor (ESMU, ESM-11 or ESMC)

Place the sensor according to the boiler manufacturer’s
specification.

Flow / air duct temperature sensor (ESM-11, ESMB-12,
ESMC or ESMU types)

Place the sensor so that it measures a representative
temperature.

Surface temperature sensor (ESMB-12)

Place the sensor in the surface of the floor.

Valid for ESM-11: Do not move the sensor after it has been
fastened in order to avoid damage to the sensor element.

14b

Installation

14c

Connecting the room panel / remote control

The ECA 60 / 61 / 62 / 63 is activated by the setting in line 10
(section 32).

The ECA 60 / 61 / 62 / 63 is powered by the system device bus
which means that the bus must be active. The bus is activated by
setting the controller address to 15 (section 32, line 199).

Override

For an active override, you have to choose the mode
“scheduled operation”! Input S1 ... S6 (ECL Card C14 only uses
S5) can be used for override purposes (section 32, line 141).

Connection example without ECA 9010

If the override switch has goldplated contacts, you can
choose one of the following solutions or a combination of
both:

(C14 = 21 o nly) (C14 = 21 only)

Closed switch: Closed switch:
Comfort temperature Setback temperature

Open switch: Open switch:
Scheduled op eration Scheduled operation

Connection example with ECA 9010

The ECA 9010 module is powered by the system device bus,
which means that the bus must be active. The bus is activated
by setting the controller address to 15 (line 199). To avoid
influence from contact resistance, the use of ECA 9010 is
recommended.

Comfor t Setba ck

Red

Brown

Green S1 .. . S6 (C14 = S5 only)

Installation

Installation

How to insert your ECL Card the first time

After the power has been switched on, open the lid on the
front side of the controller.

Place the ECL Card with the yellow side facing you. This
enables the controller to read the ECL Card data. The
controller immediately starts to copy the application type
and factory settings from the ECL Card. After copying, the
display will show you the application type. After approx. 10
sec. the display will change to display line C.

Display example:

Software

version, ECL

Card

Line

Circuit

Time

Outdoor temp.

C

C 99

Y

0

P

C 73

05 109

8

0 3 6 9 12 15 18 21 24

1

023

5

C

3

Application t ype

Software ve rsion,
controller

Desired room tem p.

The controller is now ready to be set to control your system.

Inserting the ECL Card

15a

Installation

Understanding the ECL Card

The ECL Card contains factory settings for a standard
system. If the actual system differs from the standard
system, the controller must be adjusted accordingly. After
the adjustment, the new settings should be stored on the
ECL Card.

For ECL Card copying and daily use including adjustment of
temperatures and schedules, insert the ECL Card with the
yellow side facing you.

For system set-up adjustments, the grey side of the ECL
Card - the installer’s side - must be facing you.

As a main rule, the ECL Card should always remain in the
controller during service, maintenance and setting.

If the card is removed or left in the controller with the grey
side facing you, please note that:

• After approx. 25 min.:

- The controller cannot be operated.

- The controller reverts to display C (section 1).

• The ECL Card must not be exposed to direct heat or
sunshine.

If several controllers are installed in the system you can
write a title on the ECL Card with a permanent ink pen.

Do not remove the ECL Card while copying. The data on the
ECL Card can be damaged!

When you store your personal settings on your ECL Card, the
factory settings will be overridden.

15b

The grey
side of the
ECL Card

Basic set-up

General principles

When the controller is connected and operating you can
check and adjust all or some of the basic settings. Turn the
ECL Card so that the grey side is facing you (see the example
below).

Use the arrow buttons to move from line to line of
the ECL Card, for example line 2:

Circuit

Line

Setting

to be

adjusted

1

1

ON

2

ON

09

2

04

2

3

ON

Value in range indicator

Use the plus / minus buttons to adjust the
settings.

In some displays more than one setting or value
can be adjusted. Use the shift button to switch
between the options.

The circuit selector shifts between circuit I
and II. You can adjust all settings and service
parameters individually.

Update of the ECL Card after maintenance and service

All new settings can be stored on the ECL Card. For details
about copying, see section 34.

Adjusting the ECL Card
settings

16

The grey

side of the

ECL Card

Basic set-up

Actual time

Year

05

01

2 220

5

A

3

1

Month, day

Use the shift button to switch between minutes,
hours, years, months and days.

Set the correct time and date.

In case of a power break, which lasts longer than 12 hours, the
time and the date have to be set again. All other settings are
stored as programmed.

Use the yellow side of the card to change the schedules.

See User’s Guide, section 4.

Setting the time and date ­line A

17

The grey
side of the
ECL Card

Basic set-up

Controlled units

Flow

temp.

(S2)

0360

B

3

ON

1

1

ON

2ON2

Return temp.
(S3)

Push and hold the shift button to see:

- the calculated flow temperature

- the desired return temperature limitations.

This display can also show the actual and desired flow and return
temperatures during DHW charging.

The activity of the motorized control valve is shown as arrows
below the valve symbol. When the circulation pump is
operating, it is indicated as ON below the pump symbol.

If a sensor is not mounted or is disconnected, the display will
indicate it as “- -”.

If the sensor is short-circuited, the display will indicate
it as “- - -“.

If you are in doubt, remove the controller and check the
ohmic value between the relevant terminals.

Relationship between temperature and ohmic value

-50

800

900

1000

1100

1200

1300

1400

1500

1600

-25 0 25 50 7

5 100 125 150

°C

Ω

Ω

805
845

883

922
961

1000
1039
1078
1117
1155
1194
1232
1271
1309
1347
1385
1423
1462
1501
1539
1578

°C

-50

-40

-30

-20

-10
0

10
20
30
40
50
60
70
80

90
100
110
120
130
140
150

Monitoring temperatures
and system units - line B

18

The grey

side of the

ECL Card

Basic set-up

Shift to manual mode.

Controlled units

0360

B

3

ON

1

1

ON

2ON2

Controller mode

Choose the unit you want to control. The selected
unit symbol will blink.

Controlled units are switched OFF or ON when
the relevant button is pushed.

The motorized actuator (gear motor /
damper)

closes or opens the controlled unit as long as
the relevant button is pushed. If pushed for more
than 3 seconds, the actuator continues to close or
open the valve.

The thermo actuator

activates the valve as long as the button is
pushed. If pushed for more than 3 seconds, the
actuator continues to open the valve.

Check the activation direction of the actuator either by
looking at it or by feeling whether the temperature of the
actual pipe changes as expected.

This operation applies to both circuits, if available.

During manual operation, all control functions are deactivated.

Manual control ­line B

19

The grey
side of the
ECL Card

Basic set-up

1 2

8

C

1

0

3

ON

1ON2

ON

Slope

Displacement

Slope

Circuit Setting range Factory setting

I / (II) 0.2 ... 3.4 1.8 / (0.6)

The symbol for the slope of the heat curve
will blink. Adjust the slope of the heat curve, if
required.

-20 -10 0 10 20-30

20

30

40

50

60

70

80

90

1.0

1.4

0.6

0.2

1.8 2.2 3.0 3.4

100

110

2.6

10

oC

oC

How to determine another heat curve, if necessary:

Choose the calculated flow temperature for your system and
the determined min. outdoor temperature for your area.
Pick the heat curve closest to the crossing point of these two
values.

The setting of the desired room temperature has an influence
on the calculated flow temperature (heat curve), no matter if a
room temperature sensor is connected or not.

Floor heating systems

This controller is factor y set for radiator systems, which typically
are high flow temperature systems.
To control floor heating systems, which typically are low flow
temperature systems, you need to change the heat curve
according to your type of system.

Slope

Circuit Setting range Typical setting

I / (II) 0.2 ... 3.4 1.0 / (1.0)

Whether it is reasonable to change the slope or parallel
displacement will depend on the individual heat requirement.

Small increases or reductions in the heating temperature can be
implemented by means of the parallel displacement.

Setting the heat curve ­line C

20a

The grey

side of the

ECL Card

Basic set-up

20b

Parallel displacement

Circuit Setting range Factor y setting

I / (II) -9 ... 9 K 0 / (0) K

If you want to adjust the parallel displacement of
the heat curve, push the shift button. The symbol
for the parallel displacement will blink.

Make your adjustments.

The grey
side of the
ECL Card

Basic set-up

8

1

1

1

1

ON2ON

2

1 Limit for heating cut-out

Circuit Setting range Factor y setting

I / (II) 10 ... 30 °C 20 / (20) °C

Set the outdoor temperature limit at which you
want the heating system to stop.

The valve closes and after about 3 min. the heating
circulation pump stops.

The min. limitation set in line 2 will be ignored.

18 °C

Temp.
Act ual Accumu lated
out door temp. ou tdoor temp.

Heating OF F

Time

Heati ng Heati ng

This function can save energy by stopping the heating system
when the outdoor temperature gets above a set limit. The heating
system switches ON again when the outdoor temperature and
the accumulated outdoor temperature become lower than the set
limit.

The heating cut-out is only active when the controller mode is
scheduled operation. When the limit value is set to 30, there is no
heating cut-out.

Heating cut-out ­line 1

21

The grey

side of the

ECL Card

Basic set-up

Min. flow

temp.

0

1

1ON2

094

2

3

ON

2

ON

Max. flow
temp.

Setting range

2 Flow temperature limits, min. and max.

Circuit Setting range Factor y setting

I / (II) 10 ... 150 °C min. 10 / (10), max. 90 / (90) °C

The mentioned setting range and factory settings may vary from
the settings on your ECL Card.

The left end of the setting range blinks. Adjust the
min. limit of your system temperature.

Choose the max. limit. The right end of the setting
range blinks.

Adjust the max. limit.

Flow temperature limits ­line 2

22

The grey
side of the
ECL Card

Basic set-up

Room temperature influence ­line 3

23a

This section is only relevant if you have installed a room sensor or
ECA 60 / ECA 61 / ECA 62 / ECA 63.

Min.

influence

1

2

ON

0-4

0

3

1

ON

3

ON

Max.
influence

3 Room temperature influence

Circuit Setting range Factory setting

I / (II) 0 ... 99 / -99 ... 0 min. 0 / (0) max. -40 / (-40)

The bar below the min. value blinks. Adjust the
min. influence.

Select the max. influence.
The bar below the max. value blinks.

Adjust the max. influence.

There are two basic principles for control of the room
temperature influence:

A: Max. room temperature limitation

Use this limitation if your heating system is fully equipped
with radiator thermostats and you also want to obtain a max.
limitation of the room temperature. The controller will allow
for free heat gains, i.e. solar radiation or heat from a fire place,
etc.

In fluence

Desi red room
tempe rature

Room
temperat ure

Max.
limit ation

The max. influence determines how much the room
temperature should influence the desired flow temperature.

Example

The actual room temperature is 2 degrees too high.
The influence at max. limitation (right corner of the display) is
set to -40.
The influence at min. limitation (left corner of the display) is set
to 0.
Heat curve H is 1.8.
Result:
The desired flow temperature is changed by
2 x -40 x 1.8 x 0.1 = -14.4 degrees.

The grey

side of the

ECL Card

Basic set-up

23b

B: Reference room temperature control

Used if your heating system is not equipped with radiator
thermostats and you select the room with room sensor as a
temperature reference for the rest of the rooms.
(However, should you have a few radiator thermostats
installed, make sure that they are fully open).

Set a positive value for the min. influence and a negative
value for the max. influence.

The room sensor in the reference room registers the
difference between the desired and the actual room
temperature. The desired flow temperature will be corrected
to eliminate this difference.

Example 1

The actual room temperature is 2 degrees too low.
The influence at max. limitation (right corner of the display) is
set to -35.
The influence at min. limitation (left corner of the display) is set
to 20.
Heat curve H is 1.8.
Result:
The desired flow temperature is changed by
2 x 20 x 1.8 x 0.1 = 7.2 degrees.

Example 2

The actual room temperature is 2 degrees too high.
The influence at max. limitation (right corner of the display) is
set to -35.
The influence at min. limitation (left corner of the display) is set
to 20.
Heat curve H is 1.8.
Result:
The desired flow temperature is changed by
2 x (-35) x 1.8 x 0.1 = -12.6 degrees.

In fluence

Min. l imitation

De sired room
tem perature
Room
temperat ure

Max. limi tation

The grey
side of the
ECL Card

Basic set-up

4 Proportional band, Xp

Circuit Setting range Factor y setting

I / (II) 1 ... 250 K 80 / (80) K

Set the proportional band.
A higher value will result in a stable but slow
control of the flow temperature.

5 Integration time constant, Tn

Circuit Setting range Factor y setting

I / (II) 5 ... 999 sec. 30 / (30) sec.

Set a high integration time constant to obtain a
slow but stable reaction to deviations.

A small integration constant will make the
controller react fast but with less stability

6 Running time of the motorized control valve

Circuit Setting range Factor y setting

I / (II) 5 ... 250 sec. 35 / (35) sec.

Set the running time of the motorized control valve
according to the example. This is the time it takes
the controlled unit to move from fully closed to
fully open position.

How to calculate the running time of a motorized
control valve

The running time of the motorized control valve is calculated
using the following methods:

Seated valves

Running time = Valve stroke (mm) x actuator speed (sec. / mm)

Example: 5.0 mm x 15 sec. / mm = 75 sec.

Rotating valves

Running time = Turning degrees x actuator speed (sec. / degr.)

Example: 90 degrees x 2 = 180 sec.

Control parameters ­lines 4-7

26a

The grey

side of the

ECL Card

Basic set-up

7 Neutral zone, Nz

Circuit Setting range Factory setting

I / (II) 0 ... 9 K 3 / (3) K

Set the neutral zone to a high value if you can
accept a high variation in flow temperature.
When the actual flow temperature is within the
neutral zone, the controller does not activate the
motorized valve.

The neutral zone is symmetrical around the desired flow
temperature value, i.e. half the value is above and half the value is
below this temperature.

If you want to tune the PI regulation precisely, you can
use the following method:

• Set the integration time (line 5) to its max. value
(999 sec.).

• Decrease the value for the proportional band (line 4) until the
system starts hunting with a constant amplitude (it might be
necessary to force the system by setting an extreme value).

• Find the critical time period on the temperature recording or
use a stop watch.

Temp.

Critical ti me period

Time

This time period will be characteristic for the system, and you can
evaluate the set tings from this critical period.

Integration time = 0.85 x critical time period
Proportional band = 2.2 x proportional band value in the
critical time period.

If the regulation seems to be too slow, you can decrease the
proportional band value by 10%.

Make sure there is a consumption when you set the parameters.

26b

Control & overviews

Is the ECL Comfort controller ready for use?

Make sure that the correct power supply is
connected to terminals 1 (Live) and 2 (Neutral). See
section 12 or 13.

Check that the required actuators, pumps, fans,
dampers and burners are connected to the correct
terminals. See sections 12 or 13.

Check that all sensors are connected to the correct
terminals. See section 14.

Mount the controller and switch on the power.

Insert the ECL Card with the yellow side facing you
and push , if necessary. See section 15.

Choose manual operation as controller mode. See
section 2.

Check that valves open and close, and that
required pumps, fans, dampers and burners start
and stop when operated manually. See section 19.

Having completed the manual operation check,
choose scheduled operation as controller mode.

Check that the temperatures shown in display A
and B match the actual sensors. See section 1.

Check list

29a

✓

Control & overviews

Adapting the ECL Comfort controller to the
system

Turn the ECL Card so that the grey side faces you
and push , if necessary.

Set the time and the date (line A). See section 17.

Check that all settings in the controller (sections 30
and 31) are set or that the factory settings comply
with your requirements.

If your system differs from the diagram shown on the
cover, you should check and alter your service parameters, if
necessary.

Check that the system settings mentioned in
section 10 have been set correctly.

29b

✓

Control & overviews

ECL Card settings
(circuit I)

30a

A Time and date Section 17

B System information Sections 18 & 19

C Heat curve

Section 20

Setting ranges Factory settings Your settings

Slope

0.2 ... 3.4 1.8

See section 20

Parallel displacement

-9 ... 9 K 0 K

See section 20

1

Limit for heating cut-out

10 ... 30 °C 20 °C

See section 21

2

Flow temperature, min. / max. limits

10 ... 150 °C min. 10, max. 90 °C

See section 22

3

Room temperature influence

0 ... 99 / -99 ... 0 min. 0, max. -40

See section 23

4

Proportional band, Xp

1 ... 250 K 80 K

See section 26

5

Integration time constant, Tn

5 ... 999 sec. 30 sec.

See section 26

6

Running time of the motorized control
valve

5 ... 250 sec. 35 sec.

See section 26

7

Neutral zone, Nz

0 ... 9 K 3 K

See section 26

Control & overviews

ECL Card settings
(circuit II)

30b

A Time and date Section 17

B System information Sections 18 & 19

C Heat curve

Section 20

Setting ranges Factory settings Your settings

Slope

0.2 ... 3.4 0.6

See section 20

Parallel displacement

-9 ... 9 K 0 K

See section 20

1

Limit for heating cut-out

10 ... 30 °C 20 °C

See section 21

2

Flow temperature, min. / max. limits

10 ... 150 °C min. 10, max. 50 °C

See section 22

3

Room temperature influence

0 ... 99 / -99 ... 0 min. 0, max. -40

See section 23

4

Proportional band, Xp

1 ... 250 K 80 K

See section 26

5

Integration time constant, Tn

5 ... 999 sec. 30 sec.

See section 26

6

Running time of the motorized control
valve

5 ... 250 sec. 35 sec.

See section 26

7

Neutral zone, Nz

0 ... 9 K 3 K

See section 26

Control & overviews

Service parameters (10-199)

31a

Circuit I (Heating and DHW)

Lines Setting ranges Factory settings Your settings

10 Choice of room panel / remote control

0 ... 5 5

11 Setback temperature dependent

on outdoor temperature

OFF / -29 ... 10 °C -15 °C °C

13 Reference ramping

0 ... 99 min. 0 min. min.

14 Optimizing time constant

OFF / 10 ... 59 OFF

15 Adaptive function of room

temperature

OFF / 1 ... 30 OFF

17 Influence on desired flow temperature

OFF / 1 ... 20 K OFF K

20 Optimization based on room /

outdoor temperature

ON / OFF OFF

21 Total stop

ON / OFF OFF

22 Pump exercise

ON / OFF ON

23 Valve exercise

ON / OFF OFF

24 Gear motor / thermo actuator

ON / OFF ON

30 Return temperature limitation

10 ... 110 °C 60 °C °C

31 Return temperature limitation

- upper limit (X-axis)

-60 ... 20 °C 15 °C °C

32 Return temperature limitation

- upper limit (Y-axis)

10 ... 110 °C 40 °C °C

33 Return temperature limitation

- lower limit (X-axis)

-60 ... 20 °C -15 °C °C

34 Return temperature limitation

- lower limit (Y-axis)

10 ... 110 °C 60 °C °C

35 Return temperature influence

- max. limitation

-9.9 ... 0 ... 9.9 -2.0

36 Return temperature influence

- min. limitation

-9.9 ... 0 ... 9.9 0.0

37 Time constant for return temperature

limitation

OFF / 1 ... 50 25

40 DHW pump post-run (P2)

0 ... 9 min. 0 min. min.

41 DHW charging pump post-run (P5)

0 ... 9 min. 0 min. min.

Control & overviews

31b

Service parameters (10-199)

Circuit I (Heating and DHW)

Lines Setting ranges Factory settings Your settings

43 Parallel operation of DHW and heating

circuits

OFF / 1 ... 99 K OFF K

44 Max. DHW charging time

0 ... 250 min. 0 min. min.

45 DHW charging deactivation time

0 ... 250 min. 0 min. min.

51 DHW charging pump / changeover

valve

ON / OFF OFF

53 Desired flow temperature, DHW

charging

ON / OFF OFF

55 Activation / deactivation of DHW

circulation during DHW charging

ON / OFF OFF

67 Adaptive function of S2 flow

temperature during DHW charging

OFF / 1 ... 50 20

78 Desired temperature for anti-bacteria

function

OFF / 1 ... 100 °C OFF °C

80 Anti-bacteria function period

5 ... 250 min. 120 min. min.

83 Daily / weekly anti-bacteria function

ON / OFF ON

140 Function of temperature sensor S5

0, 1, 2 0

141 Override input selection

OFF / 1 ... 6 OFF

152 Max. limitation temperature at S2

during DHW charging

10 ... 110 °C 110 °C °C

174 Motor protection

OFF / 10 ... 59 min. OFF min.

194 Temperature difference at DHW

charging, cut-out temperature
difference - lower tank temperature
sensor

1 ... 30 K 15 K K

195 Temperature difference at DHW

charging, cut-in temperature
difference - upper tank temperature
sensor

1 ... 30 K 20 K K

196 Service pin LON

ON / OFF OFF

197 LON reset

ON / OFF ON

198 Daylight saving time changeover

ON / OFF ON

199 Slave address

0 ... 9, 15 15

Control & overviews

Service parameters (10-199)

31c

Circuit II (Heating)

Lines Setting ranges Factory settings Your settings

10 Choice of room panel / remote control

0 ... 5 5

11 Setback temperature dependent

on outdoor temperature

OFF / -29 ... 10 °C -15 °C °C

13 Reference ramping

0 ... 99 min. 0 min. min.

14 Optimizing time constant

OFF / 10 ... 59 OFF

15 Adaptive function of room

temperature

OFF / 1 ... 30 OFF

20 Optimization based on room /

outdoor temperature

ON / OFF OFF

21 Total stop

ON / OFF OFF

22 Pump exercise

ON / OFF ON

23 Valve exercise

ON / OFF OFF

24 Gear motor / thermo actuator

ON / OFF ON

31 Return temperature limitation

- upper limit (X-axis)

-60 ... 20 °C 15 °C °C

32 Return temperature limitation

- upper limit (Y-axis)

10 ... 110 °C 40 °C °C

33 Return temperature limitation

- lower limit (X-axis)

-60 ... 20 °C -15 °C °C

34 Return temperature limitation

- lower limit (Y-axis)

10 ... 110 °C 60 °C °C

35 Return temperature influence

- max. limitation

-9.9 ... 0 ... 9.9 -2.0

36 Return temperature influence

- min. limitation

-9.9 ... 0 ... 9.9 0.0

37 Time constant for return temperature

limitation

OFF / 1 ... 50 25

43 Parallel operation of DHW and heating

circuits

OFF / 1 ... 99 K OFF K

52 Closed valve / normal operation

ON / OFF OFF

141 Override input selection

OFF / 1 ... 6 OFF

174 Motor protection

OFF / 10 ... 59 min. OFF min.

Control & overviews

The grey
side of the
ECL Card

Extended service

In addition to the settings in line 1 to 7 on the grey side of the
ECL Card, there is an extended service menu from line 10 and
onwards.

Push repeatedly to reach the lines numbered 10
and onwards.

Line

0

01

Value

Range indicator

Now you can move to any line of your choice.

Set the parameter value.

You can select any of the two circuits no matter
what line you are in. You will not necessarily enter
the same line number. See the service parameters
in section 31.

Check that you have entered all the required settings in
circuit I - and circuit II, if available.

If you want to copy the new settings to the ECL Card
(recommended by Danfoss), see section 34.

Make a note of your new settings in the parameter list in section

31.

When you have entered all your personal settings, turn the ECL
Card over so that the yellow side faces you.

Adjusting the service
parameters

32

The grey

side of the

ECL Card

Extended service

32a

Service parameter(s) 10-11

10 Choice of room panel / remote control

Circuit Setting range Factory setting

I / (II) 0 ... 5 5 / (5)

Decides the communication with the room panel or remote
control.
Please note that the room panel / remote control is only active
if the system device bus is active. The bus is active when the
outdoor temperature sensor is connected.

Choose between

0: Not to be used
1: Room panel ECA 60 / 62 or remote control

ECA 61 / 63 with address A
2: Room panel ECA 60 / 62 or remote control
ECA 61 / 63 with address B
3 ... 5: Not used

The room panel / remote control has no influence on the DHW
control.

11 Setback temperature dependent on outdoor

temperature

Circuit Setting range Factory setting

(I) / (II) OFF / -29 ... 10 °C (-15) / (-15) °C

Below this outdoor temperature, the setback temperature setting
has no influence.

-29 ... 10:

The setback temperature depends on the

outdoor temperature, when the outdoor
temperature is above the set limit. The
lower the outdoor temperature, the less the
temperature reduction. When the outdoor
temperature is below the set limit, there is
no temperature reduction.

OFF: The setback temperature does not depend

on the outdoor temperature.

100%

0%

-20 -10-29 0 2

010

Reduct ion

Outdoo r
temper ature

°C

Setti ng line 11

The grey
side of the
ECL Card

Extended service

32b

Service parameter(s) 13

13 Reference ramping

Circuit Setting range Factory setting

(I) / (II) 0 ... 99 min. (0) / (0) min.

The time in which the desired flow temperature increases slowly
to avoid load peaks in the heat supply.

Set the ramping time for the controller.

Temperatu re °C

Setting l ine 13 Time (min. )

In order to avoid load peaks in the supply network, the flow
temperature can be set to increase slowly after a period with
setback temperature. This causes the valve to open slowly.

The grey

side of the

ECL Card

Extended service

Service parameter(s) 14-15

32c

14 Optimizing time constant

Circuit Setting range Factory setting

(I) / (II) OFF / 10 ... 59 (OFF) / (OFF)

Optimizes the start and stop times for the comfort temperature
period to obtain the best comfort at the lowest energy
consumption. The lower the outdoor temperature, the earlier the
heating cut-in.

Adjust the optimizing time constant. The value
consists of a two digit number.

The two digits have the following meaning:

Digit 1 Heat accumulation of

the building

System type

1

light Radiator

systems

2

medium

3

heavy

4

medium Floor heating

systems

5

heavy

Digit 2 Dimensioning

temperature

Capacity

0

- 50 °C large

1

- 45 °C

•

• • •

5

- 25 °C normal

• • •

9

- 5 °C small

OFF: No optimization. The heating starts and
stops at the times set in the schedule.

Dimensioning temperature:

The lowest outdoor temperature (usually determined by your
system designer in connection with the design of the heating
system) at which the heating system can maintain the designed
room temperature.

15 Adaptive function of room temperature

Circuit Setting range Factory setting

(I) / (II) OFF / 1 ... 30 (OFF) / (OFF)

Controls how fast the room temperature adapts to the desired
room temperature.

The adaptive funtion will eliminate the difference
between the desired and the actual room
temperature. This is done by integrating the
difference and adjusting the desired flow
temperature.

OFF: The adaptive funtion is cancelled.

1: The desired temperature is adapted quickly.

30: The desired temperature is adapted slowly.

The grey
side of the
ECL Card

Extended service

32d

Service parameter(s) 17-20

17 Influence on desired flow temperature (T

flow.ref (I)

)

Circuit Setting range Factory setting

I OFF / 1 ... 20 K OFF

The desired flow temperature in heating circuit I can be
influenced by an external reference.

OFF: The desired flow temperature in circuit I is

not influenced by any other controller (slave
or circuit II).

1 ... 20:
The desired flow temperature is increased

by the set value (line 17), if the demand of a
slave / circuit II is higher.

Temp. Settin g line 17

T

flow.ref (I)

T

flow.ref (II)

Time

Example:

If a slave controller (or circuit II) demands a higher
temperature than that of the master controller
(T

flow.ref(I)

), the temperature of the master will be

increased accordingly (T

flow.ref(II)

) + the setting

(line 17).

The function of line 17 can compensate for heat losses between
master and slave controlled systems.

20 Optimization based on room / outdoor temperature

Circuit

Setting range Factory setting

(I) / (II)

ON / OFF (OFF) / (OFF)

The optimized start and stop time can be based on either room or
outdoor temperature.

ON: Optimization based on room temperature, if

measured.

OFF: Optimization based on outdoor

temperature. Use this setting if the room
temperature is not measured.

The grey

side of the

ECL Card

Extended service

Service parameter(s) 21

32e

21 Total stop

Circuit Setting range Factory setting

I / (II) ON / OFF OFF / (OFF)

Decide whether you want a total stop during the setback
temperature period.

ON: The desired flow temperature is lowered

to 10 °C. The min. setting of the flow
temperature (line 2, section 22) is overruled.

De sired flow
tem p. (°C)

10 °C

Time

OFF: No total stop

De sired flow
tem p. (°C)

10 °C

Time

The grey
side of the
ECL Card

Extended service

32f

Service parameter(s) 22-24

23 Valve exercise

Circuit Setting range Factory setting

I / (II) ON / OFF OFF / (OFF)

Exercises the valve to avoid blocking in periods without heat
demand.

ON: The valve receives a signal to open and close

every third day around noon.

OFF: The valve exercise is not active.

22 Pump exercise

Circuit Setting range Factory setting

I / (II) ON / OFF ON / (ON)

Exercises the pump to avoid blocking in periods without heat
demand.

ON: The pump is switched ON for 1 minute every

third day around noon.

OFF: The pump exercise is not active.

24 Gear motor / thermo actuator

Circuit Setting range Factory setting

(I) / (II) ON / OFF (ON) / (ON)

Choose the actuator type for your valve.

ON: Gear motor

OFF: Thermo actuator (ABV type)

Control parameters (lines 4 -7) are overruled if thermo actuator is
chosen (OFF).

The grey

side of the

ECL Card

Extended service

31-34 Return temperature limitation

The return temperature limitation is based on the outdoor
temperature. Typically in district heating systems a
higher return temperature is accepted at a decrease in
outdoor temperature. The relationship between the return
temperature limits and outdoor temperature is set in two
coordinates.
The upper limit coordinate is set in lines 31 and 32 and the
lower limit coordinate in lines 33 and 34.

80

60

40

20

-15 0 +15

T

return

Line 34

Line 32

Lower li mit

Upper l imit

Line 33 Line 31

T

out

Service parameter(s) 30-34

32g

30 Return temperature limitation

Circuit Setting range Factory setting

I 10 ... 110 °C 60 °C

Set the return temperature you accept for the heating / DHW
circuit.

Set the acceptable return temperature limit.

When the return temperature falls below or gets higher
than the set value, the controller automatically changes the
desired flow temperature to obtain an acceptable return
temperature. The influence is set in lines 35 and 36.

For some applications the return temperature limitation for
heating circuits is set in lines 31-34 (outdoor temperature
dependent limitation).

The grey
side of the
ECL Card

Extended service

Service parameter(s) 31-34

32h

31 Return temperature limitation - upper limit (X-axis)

Circuit Setting range Factory setting

(I) / (II) -60 ... 20 °C (15) / (15) °C

Set the outdoor temperature value (see drawing).

Set the outdoor temperature value (X coordinate)
for the upper limit.
(The corresponding Y coordinate is set in line 32).

32 Return temperature limitation - upper limit (Y-axis)

Circuit Setting range Factory setting

(I) / (II) 10 ... 110 °C (40) / (40) °C

Set the return temperature limitation referring to the outdoor
temperature value set in line 31 (see drawing).

Set the return temperature (Y coordinate) for the
upper limit.
(The corresponding X coordinate is set in line 31).

33 Return temperature limitation - lower limit (X-axis)

Circuit Setting range Factory setting

(I) / (II) -60 ... 20 °C (15) / (15) °C

Set the outdoor temperature value (see drawing).

Set the outdoor temperature value (X coordinate)
for the lower limit.
(The corresponding Y coordinate is set in line 34).

34 Return temperature limitation - lower limit (Y-axis)

Circuit Setting range Factory setting

(I) / (II) 10 ... 110 °C (60) / (60) °C

Set the return temperature limitation (see drawing).

Set the return temperature (Y coordinate) for the
lower limit.
(The corresponding X coordinate is set in line 33).

The grey

side of the

ECL Card

Extended service

Service parameter(s) 35

32i

35 Return temperature influence - max. limitation

Circuit Setting range Factory setting

(I) / (II) -9.9 ... 0 ... 9.9 (-2.0) / (-2.0)

Set the influence from the return temperature on the desired flow
temperature.

Set the influence of the max. return temperature
limitation (set in line 30 or lines 31-34).

Influence higher than 0:

The desired flow temperature is increased, when
the return temperature gets higher than the set
limit.

Influence lower than 0:

The desired flow temperature is decreased, when
the return temperature gets higher than the set
limit.

0

Influe nce

Max. limi tation > 0

Return l imit

R eturn temp.

Max. li mitation < 0

Example

The return limit is active from 50 °C.
The influence is set to -2.0.
The actual return temperature is 2 degrees too high.
Result:
The desired flow temperature is changed by -2.0 x 2 = -4 degrees.

Normally, the set ting in line 35 is lower than 0 in district heating
systems to avoid a too high return temperature.
Typically, the setting in line 35 is 0 in boiler systems because a
higher return temperature is acceptable (see also line 36).

The grey
side of the
ECL Card

Extended service

Service parameter(s) 36

32j

36 Return temperature influence - min. limitation

Circuit Setting range Factory setting

(I) / (II) -9.9 ... 0 ... 9.9 (0.0) / (0.0)

Set the influence from the return temperature on the desired flow
temperature.

Set the influence of the min. return temperature
limitation (set in line 30 or lines 31-34).

Influence higher than 0:

The desired flow temperature is increased, when
the return temperature gets below the set limit.

Influence lower than 0:

The desired flow temperature is decreased, when
the return temperature gets below the set limit.

0

Influe nce

Min. l imitation > 0

Re turn limit Ret urn temp.

Min. li mitation < 0

Example

The return limit is active up to 50 °C.
The influence is set to -3.0.
The actual return temperature is 2 degrees too low.
Result:
The desired flow temperature is changed by -3.0 x 2 = - 6 degrees.

Normally, the set ting in line 36 is 0 in district heating systems
because a lower return temperature is acceptable.
Typically, the setting in line 36 is higher than 0 in boiler systems to
avoid a too low return temperature (see also line 35).

The grey

side of the

ECL Card

Extended service

32k

Service parameter(s) 37-41

37 Time constant for return temperature limitation

Circuit Setting range Factory setting

(I) / (II) OFF / 1 ... 50 (25) / (25)

Controls how fast the actual return temperature adapts to the
desired return temperature limitation.

Adjust the time constant for the return limitation.
The setting will eliminate the difference
between the acceptable and the actual return
temperature.
The difference is integrated to adjust the desired
flow temperature.

OFF: The desired flow temperature will not be

adjusted any further.

1: The desired flow temperature will be

adjusted quickly.

50: The desired flow temperature will be

adjusted slowly.

40 DHW pump post-run

Circuit Setting range Factory setting

(I) / (II) 0 ... 9 min. (0) / (0) min.

The DHW pump can continue to run after charging to utilize the
remaining heat in the heat exchanger / boiler.

0: The DHW pump stops immediately after

charging.

1 ... 9: The time the DHW pump runs after the

charging has ended.

This function also prevents that too DHW is
circulated in the heating circuit.

41 DHW charging pump post-run (P5)

Circuit Setting range Factory setting

I 0 ... 9 min. 0 min.

Set the post-run time of the DHW charging pump in the
secondary circuit. The settings only apply to heating system types
5 and 5a in section 10.

0: The pump stops immediately after

charging.

1 ... 9: The time the pump runs after the charging

has ended.

When the DHW charging pump runs after the charging of
the DHW tank has stopped, the heat in the exchanger can be
utilized to a better extent.

The post-run of the DHW charging pump (line 41) should not be
set to a shorter time than that of the DHW pump (line 40).

The grey
side of the
ECL Card

Extended service

32l

Service parameter(s) 43

43 Priority or parallel operation

Circuit Setting range Factory setting

I / II OFF / 1 ... 99 K OFF / OFF

Choose whether the DHW should have priorit y or the heating
operation should be limited at DHW charging if the circuits are
operated in parallel.

OFF: Priority operation for the DHW circuit.

1 ... 99:

Parallel operation of DHW and heating

circuits. Set the limit for parallel operation.
Parallel operation is obtained as long as the
difference between T

flow.ref I

and T

flow.ref II

is

less than the set value.

When the parallel operation is active, and the charging
temperature (at S3) cannot be kept at the set level (circuit II, line C,
section 3 in the yellow par t), the controller changes into priority
operation.

If the DHW charging time exceeds 35 minutes and the DHW
temperature is above the cut-in level (circuit II, line 2), the
controller changes into heating operation.

If the controller has changed to priority operation and the DHW
temperature remains below the cut-in level, the controller does
not change into heating operation. This situation can be avoided
by setting a lower value for the DHW charging temperature.

Priorit y operation

Temp.

T

flow.re f II

T

flow.re f I

Line 43

Time

Heati ng

DHW

Parall el operation

Temp.

T

flow.re f II

T

flow.re f I

Line 43

Time

Heati ng

DHW

The grey

side of the

ECL Card

Extended service

Service parameter(s) 44-51

32m

44 Max. DHW charging time

Circuit Setting range Factory setting

I 0 ... 250 min. 0 min.

When the set max. DHW charging time expires, the charging is
deactivated.

0: If the DHW temperature is lower than the

DHW charging cut-in temperature (line 195),
the charging remains active for unlimited
time. If the DHW temperature is higher than
the DHW charging cut-in temperature, the
charging is deactivated after 35 min.

1 ... 250:

The charging is deactivated when the set

time expires.

45 DHW charging deactivation time

Circuit Setting range Factory setting

I 0 ... 250 min. 0 min.

If the charging time has reached its maximum (line 44), the
charging is deactivated for the set time.

0: No deactivation time.

1 ... 250 :

When the DHW charging time has reached

its maximum, DHW can only be charged
again when the deactivation time has
expired.

51 DHW charging pump / changeover valve

Circuit Setting range Factory setting

I ON / OFF OFF

Determine whether you have a DHW charging pump or a
changeover valve.

ON: Changeover valve P2. The circulation pump

P1 is running during DHW charging

OFF: DHW charging pump P2. The heating

circulation pump P1 is stopped during DHW
charging*.

* See line 43 for paral lel operation

The grey
side of the
ECL Card

Extended service

32n

Service parameter(s) 52-55

52 Closed valve / normal operation

Circuit Setting range Factory setting

(I) / (II) ON / OFF (OFF) / (OFF)

The heating circuit can be closed when the controller acts as slave
and when DHW charging is active in the master.

ON: The valve in the heating circuit is closed*

during active DHW charging in the master
controller.

OFF: The flow temperature control remains

unchanged during active DHW charging in
the master controller.

* The desired flow te mperature is set to 10 °C.

The setting in line 52 must be considered if this controller is a
slave.

53 Desired flow temperature, DHW charging

Circuit Setting range Factory setting

(I) / (II) ON / OFF (OFF) / (OFF)

Choose temperature condition at the flow temperature sensor
during DHW charging.

ON: The desired flow temperature is controlled

according to heating circuit demands.

OFF: The desired flow temperature is set to the

desired DHW charging temperature during
DHW charging.

55 Activation / deactivation of DHW circulation pump

during DHW charging

Circuit Setting range Factory setting

I ON / OFF OFF

At DHW charging, the pump can be deactivated independently of
the schedule.

ON: The pump always operates according to

schedule.

OFF: The pump is deactivated at DHW charging,

independently of the schedule.

The grey

side of the

ECL Card

Extended service

32o

Service parameter(s) 67-78

67 Adaptive function of S2 flow temperature during

DHW charging

Circuit Setting range Factory setting

I OFF / 1 ... 50 20

This setting is only used for system types 10.5 and 10.5a.
The setting will eliminate the difference between the desired and
actual S5 charging temperature by integrating the difference and
adjusting the desired S2 flow temperature.

OFF: The desired flow temperature will not be

adjusted any further.

1: The desired flow temperature will be

adjusted quickly.

50: The desired flow temperature will be

adjusted slowly.

78 Desired temperature for anti-bacteria function

Circuit Setting range Factory setting

I OFF / 1 ... 100 °C OFF

Set the desired temperature for the anti-bacteria function. The
DHW will be charged once a day (from 00:00) or once a week
(Mondays from 00 :00) at the set temperature to protect against
bacteria.
The selection of the daily / weekly anti-bacteria function is set in
line 83. The DHW is charged according to the period set in line 80.

OFF: The anti-bacteria function is not active.

1 ... 100:

The anti-bacteria function is active at the

desired temperature.

The grey
side of the
ECL Card

Extended service

32p

Service parameter(s) 80-140

80 Anti-bacteria function period

Circuit Setting range Factory setting

(I) / (II) 5 ... 250 min. 120 min.

Set the period for the anti-bacteria function. When the set time
expires, the anti-bacteria function is stopped.

5 ... 250:

The anti-bacteria function is active for the

set period.

The function is activated in line 78 by setting the desired anti­bacteria temperature.

83 Daily / weekly anti-bacteria function

Circuit Setting range Factory setting

I ON / OFF ON

Choose whether the anti-bacteria function is to be active daily or
weekly.

ON: The anti-bacteria function is active once a

day (from 00:00).

OFF: The anti-bacteria function is active once a

week (Mondays from 00:00).

140 Function of temperature sensor S5

Circuit Setting range Factory setting

I 0, 1, 2 0

Sensor S5 can be used optionally as return temperature sensor
in circuit II (limitation of the return temperature), as lower DHW
tank temperature sensor (cut-out temperature) or as DHW
charging temperature sensor.

0: Return temperature sensor, circuit II.

1: Lower DHW tank temperature sensor.

2: DHW charging temperature sensor (system

types 5 and 5a).

The grey

side of the

ECL Card

Extended service

32q

Service parameter(s) 141

141 Override input selection

Circuit Setting range Factory setting

(I) / (II) OFF / 1 ... 6 (OFF) / (OFF)

Choose an unused temperature sensor input for overriding the
schedule for circuit I and / or circuit II.

The override can be activated for comfort or setback mode.
For override the controller's mode must be in 'scheduled
operation'!

OFF: The controller's schedule is not overridden.

1 ... 6: Select an unused sensor input S1 ... S6 for

the override of the circuit in question.

Connection example

If the override switch has gold-plated contacts, you can
choose one of the following solutions:

Closed switch:
Comfort temperature

Closed switch:
Setback tempe rature

Changeover switch:
Setback or comfort temperature

Connection example with ECA 9010

(used if the override switch does not have gold-plated
contacts).

16 - Brown

15 - Red

Green (S1 ... S6)

The ECA 9010 module is powered by the system device bus, which
means that the bus must be active. The bus is activated by setting
the controller address to 15 (line 199).

The grey
side of the
ECL Card

Extended service

32r

Service parameter(s) 152-194

152 Max. limitation temperature at S2 during DHW

charging

Circuit Setting range Factory setting

I 10 ... 110 °C 110 °C

For the system types 5 and 5a, choose a max. limitation
temperature for sensor S2 which must not be exceeded during
DHW charging.

Set the desired limitation temperature for sensor
S2.

This function must be deactivated for the system types 1-4a, i.e.
this line should be set to a max. value (line 152, circuit I: 90-110).

174 Motor protection

Circuit Setting range Factory setting

(I) / (II) OFF / 10 ... 59 min. (OFF) / (OFF)

Prevents the controller from unstable temperature control (and
resulting actuator oscillations). This can occur when there is
no DHW tapping, i.e. when the load is only due to the DHW
circulation, or when the heating demand in the heating circuit
is very low. The motor protection increases the lifetime of all
involved components.

OFF: Motor protection is not activated.

10 ... 59:

Motor protection is activated after the set

activation delay.

A high value should be used for DHW

installations with many consumers.

194 Temperature difference at DHW charging, cut-out

temperature difference - lower tank temperature
sensor

Circuit Setting range Factory setting

I 1 ... 30 K 15 K

The difference between the desired charging temperature and
cut-out temperature (charging stop).

Set the difference.

Example:
Desired charging temperature
(section 3) 70 °C
Cut-out difference 15 K
Calculated cut-out temperature

(70-15) = 55 °C

The grey

side of the

ECL Card

Extended service

32s

Service parameter(s) 195

195 Temperature at DHW charging, cut-in temperature

difference - upper tank temperature sensor

Circuit Setting range Factory setting

I 1 ... 30 K 20 K

The difference between the desired charging temperature and
cut-in temperature (charging start).

Set the difference.

Example:
Desired charging temperature
(section 3) 70 °C
Cut-in difference 20 K
Calculated cut-in temperature

(70-20) = 50 °C

One sensor (S6)

Temp.

Cut-ou t difference - l ine 194

Cut-in di fference - li ne 195

Cut-ou t

Time

P3

Desir ed charging
temp.

S6

Cut-in

If only one sensor is installed (S6), it will measure the cut-out
temperature as well as the cut-in temperature.

Two sensors (S5 + S6)

Temp.

Cut-ou t difference - l ine 194

Cut-in di fference - li ne 195

Cut-in
Cut-ou t

Time

P3

Desir ed charging
temp.

S6

S5

The DHW temperature will vary between the cut-in and the cut­out temperatures.

The grey
side of the
ECL Card

Extended service

32t

Service parameter(s) 196-198

196 Service pin - LON

Circuit Setting range Factory setting

I ON / OFF OFF

This setting is only used in connection with LON communication
(see the documentation for the used communication unit).

197 LON reset

Circuit Setting range Factory setting

I ON / OFF ON

This setting is only used in connection with LON communication
(see the documentation for the used communication unit).

198 Daylight saving time changeover

Circuit Setting range Factory setting

I ON / OFF ON

Choose whether you want the change to summer / winter time to
be automatic or manual.

ON: The controller’s built-in clock automatically

changes + / - one hour on the standardized
days for daylight saving time changeover
for Central Europe.

OFF: You change manually between summer and

winter time by setting the clock backward
or forward.

The grey

side of the

ECL Card

Extended service

199 Master / slave address

Circuit Setting range Factory setting

I 0 ... 9, 15 15

The setting is relevant when more controllers are working in the
same ECL Comfort system (connected via the system device bus
(ECL Comfort BUS)).

0: The slave receives information about the

outdoor temperature (S1), system time, and
signal for DHW demand in the master.

1 ... 9: The slave receives information about the

outdoor temperature (S1), system time, and
signal for DHW demand in the master.

The slave sends information about the

desired flow temperature to the master.

15: The controller is master. The master sends

information about the outdoor temperature
(S1), system time, and the DHW demand
signal.

The master receives the desired flow
temperature information from the slaves
with addresses 1 ... 9.

The bus is active and connected ECAs are
powered.

The ECL Comfort controllers can be connected via the bus to
perform a larger system. The controller, which is physically
connected with the outdoor temperature sensor, is the
master of the entire system and automatically gets the
address 15.

Each slave must be configured with its own address (1 ... 9).

However, more slaves can have the address 0 if they only have
to receive information about outdoor temperature, system
time, and signal for DHW demand in the master.

32u

Service parameter(s) 199

The yellow
side of the
ECL Card

Miscellaneous

34a

Copying with the ECL Card

Check the ECL Card and the software generations (see
following example).

Insert the ECL Card with the yellow side facing you.

Go to line 8 (is not displayed), which is the first line
below line 7.

Application t ype

Software

version,

ECL Card

C 73

05 109

Software ve rsion,
controller

Store new controller settings on the ECL Card

All new settings* can be stored on the ECL Card. Insert the ECL
Card with the yellow side facing you.

Go to line 9 (is not displayed), which is the second
line below line 7.

C

C 99

Y

0

P

Copying direction

Accept to copy settings from controller to
ECL Card.

When the copying is finished, the controller returns to display
line C.

* Time and date settings are not stored on the ECL Card .

Do not remove the ECL Card while copying. The data on the ECL
Card can be damaged!

If you have copied your personal settings to the ECL Card, you
cannot restore the factory settings!

The yellow

side of the

ECL Card

Miscellaneous

Copy personal settings to additional controller(s) in
identical systems

Ensure that the other controller(s) use(s) the same ECL Card
type. (If this is not the case, please read section 15).

Insert the ECL Card, which contains the personal settings,
with the yellow side facing you.

Go to line 9 (is not displayed), which is the second
line below line 7

Select the copying direction (from the card to the
controller).

Copying direction

C

C 99

Y

0

P

Copy.

Do not remove the ECL Card while copying. The data on the ECL
Card can be damaged!

34b

7a

Definitions

Air duct temperature

Temperature measured in the air duct where the temperature is
to be controlled.

Balance temperature

This setpoint is the basis for the flow / air duct temperature. The
balance temperature can be adjusted by the room temperature,
the compensation temperature and the return temperature.
The balance temperature is only active if a room temperature
sensor is connected.

Comfort operation

Normal temperature in the system controlled by the schedule.
During heating the flow temperature in the system is higher
to maintain the desired room temperature. During cooling the
flow temperature in the system is lower to maintain the desired
room temperature.

Comfort temperature

Temperature maintained in the circuits during comfort periods.
Normally during daytime.

Compensation temperature

A measured temperature influencing the flow temperature
reference / balance temperature.

Controller mode indicator

Black arrow to the right of the symbols indicating the present
mode.

Desired room temperature

Temperature which is set as the desired room temperature.
The temperature can only be controlled by the ECL Comfort
controller if a room temperature sensor is installed.
If a sensor is not installed, the set desired room temperature
however still influences the flow temperature.
In both cases the room temperature in each room is typically
controlled by radiator thermostats / valves.

Desired temperature

Temperature based on a setting or a controller calculation.

Dew point temperature

Temperature at which the humidity in the air condensates.

Factory settings

Settings stored on the ECL Card to simplify the set up of your
controller the first time.

Flow temperature

Temperature measured in the flow at any time.

Flow temperature reference

Temperature calculated by the controller on basis of the
outdoor temperature and influences from the room and / or
return temperatures. This temperature is used as a reference for
the control.

Heating circuit

The circuit for heating the room / building.

Heat curve

A curve showing the relationship between actual outdoor
temperature and required flow temperature.

DHW circuit

The circuit for heating the domestic hot water (DHW).

7b

Humidity, relative

This value (stated in %) refers to the indoor moisture content
compared to the max. moisture content. The relative humidity
is measured by the ECA 62 / 63 and is used for the calculation of
the dew point temperature.

Limitation temperature

Temperature that influences the desired flow / balance
temperature.

Pt 1000 sensor

All sensors used with the ECL Comfort controller are based
on the Pt 1000 type. The resistance is 1000 ohm at 0 °C and it
changes with 3.9 ohm / degree.

Optimization

The controller optimizes the start time of the scheduled
temperature periods. Based on the outdoor temperature, the
controller automatically calculates when to start in order to
reach the comfort temperature at the set time. The lower the
outdoor temperature, the earlier the start time.

Return temperature

The temperature measured in the return influences the desired
flow temperature.

Room temperature sensor

Temperature sensor placed in the room (reference room,
typically the living room) where the temperature is to be
controlled.

Room temperature

Temperature measured by the room temperature sensor, room
panel or remote control. The room temperature can only be
controlled directly if a sensor is installed. The room temperature
influences the desired flow temperature.

Schedule

Schedule for periods with comfort and setback temperatures.
The schedule can be made individually for each week day and
may consist of up to 3 comfort periods per day.

Setback temperature

Temperature maintained in the heating / DHW circuit during
setback temperature periods.

State / mode indicators

White arrow to the left of the symbols (sun / moon). The white
arrow indicates the present state, comfort (sun) or setback
(moon), when the controller is in scheduled operation mode.
The black arrow symbol indicates the mode of the controller.

Time line / bar

Line with numbers representing the hours. Below the time
line, time bars represent scheduled periods with comfort
temperature. The bar is divided into half hour sections.

Weather compensation

Flow temperature control based on the outdoor temperature.
The control is related to a user-defined heat curve.

The definitions apply to the Comfort 200 as well as ECL Comfort
300 series. Consequently, you might come across expressions
that are not mentioned in your guide.

The time shown in the display is one hour off?

See the summer time changeover in line 198, section 32.

The time shown in the display is not correct?

The internal clock may have been reset, if there has been a
power break for more than 12 hours.
Set time and date.
See section 17.

The ECL Card is lost?

Switch the power off and on again to see the
system type and the software generation of the controller.
Order a replacement from your Danfoss representative.
Insert the new ECL Card with the yellow side facing you and
make sure that you copy your personal settings from the
controller to the ECL Card.
See section 34.

The room temperature is too low?

Make sure that the radiator thermostat does not limit the
room temperature.
If you still cannot obtain the desired room temperature by
adjusting the radiator thermostats, the flow temperature
is too low. Increase the desired room temperature (section

3). If this does not help, adjust the heat curve / balance
temperature (section 20).

The room temperature is too high during setback
periods?

Make sure that the min. flow temperature limitation is not too
high. See section 22.

The temperature is unstable?

Check that the flow temperature sensor is correctly
connected and in the right place. Adjust the control
parameters (section 26).
If the controller has a room temperature signal, see section

23.

The controller does not operate and the control
valve is closed?

Check that the flow temperature sensor is measuring the
correct value, see section 1.
Check the influence from other measured temperatures.

Hot points

6a

How to make an extra comfort period in the
schedule?

You can make an additional comfort period by pushing the
shift and + buttons simultaneously for 2 seconds.
See section 4.

How to remove a comfort period in the schedule?

You can remove a comfort period by pushing the shift and

- buttons simultaneously for 2 seconds.
See section 4.

How to restore your personal settings?

Insert the ECL Card with the yellow side facing you. Go to line
9 (is not displayed), which is the second line below line 7.
Select copy direction 'card to controller' (left to right) by
using the shift button. Push the + button to copy.
See section 5.

This is a collection of frequently asked questions for the ECL
Comfort 200 as well as ECL Comfor t 300 series. Consequently,
you might come across some questions that do not apply to your
application.

6b

The yellow
side of the
ECL Card

Save your personal settings to the ECL Card

Go to line 9 (is not displayed), which is the second
line below line 7.

Card

C

C 99

Y

0

P

Copying direction

Controller

Accept to copy personal settings from the
controller to the ECL Card.

The controller will return to display line C when the copying is
completed. This takes approx. 15 seconds.
By saving your personal settings* to the ECL Card, you have
ensured that your settings will not be lost if the controller
settings are changed by mistake.

* Time and date settings are not stored on the ECL Card .

Prevent unauthorized operation

One of the primary advantages of the controller is the
setting security.
If you remove the ECL Card, and the ECL Comfort controller is
not operated during the next 25 minutes (approx.):

- the controller returns to display line C (section 1)

- further changes are not possible

- the controller continues its operation

When the ECL Card is inserted with the yellow side
facing you, the controller can be operated again.

Do not remove the ECL Card while copying. The data on the
ECL Card can be damaged!

If you have copied your personal settings to the ECL Card, you
cannot restore the factory settings!

Advantages of the
ECL Card

5a

The yellow

side of the

ECL Card

Restore ECL Card data

After establishing your favorite temperatures, comfort
periods etc., and after copying these to the ECL Card, you can
set alternative settings.

Insert the ECL Card and make the temporary settings,
e.g. for holidays, but do not copy these. To restore your
favorite settings, copy these from the ECL Card to the
controller. Insert the ECL Card.

Go to line 9 (is not displayed), which is the second
line below line 7.

Card

C

C 99

Y

0

P

Copying direction

Controller

Choose to copy the ECL Card to the controller
(from left to right).

Copy

Do not remove the ECL Card while copying. The data on the
ECL Card can be damaged!

5b

The yellow
side of the
ECL Card

Monitor the current schedules

Select between lines 1-7 (Monday, Tuesday ......

Sunday) to see your individual schedules.

Line

Circuit

Changeover time

Periods with comfor t temp. are
shown as black bars

Time line

Change the schedules

Select appropriate day.

The changeover p oint blinks

Adjust the first blinking changeover point, if
required. The end of the bar moves, extending or
reducing the comfort period.

Shift to next changeover point and adjust
accordingly.

Change the schedule for circuit II

Select circuit II to view or change the schedule.
Use the same method for changes as for circuit I.

4a

Set your personal schedule

The yellow

side of the

ECL Card

4b

Add an extra comfort period

Push the shift and + button simultaneously for
2 seconds.

The new perio d appears

Adjust the new period.

Remove a comfort period

Select the period to be removed (blinking
changeover point)

Push shift and - buttons simultaneously for
2 seconds.

Cancel changes in your personal settings

Push - and + buttons simultaneously for
2 seconds to restore the factory settings of the
actual schedule.

The yellow
side of the
ECL Card

During scheduled operation (clock), the state indicator (a
white arrow) will show you the control mode of the selected
circuit. The white arrow will blink when this is a heating
circuit and it is in the optimizing period.

The mode can be set differently for each circuit by means of
the function selector. However, if manual operation (hand) is
chosen, this mode will apply to all circuits.

State indicator

(white arrow)

02

Function selec tor
(black arrow)

Function selector. Push the button to change the
mode of the circuit. The black arrow shows you
which of the modes you have chosen.

What do the symbols mean?

Manual operation

Used only at maintenance and service.

Note! The protection against frost is switched off
when this mode is selected.

Scheduled operation

This is the normal mode. The temperature is
controlled according to your schedule with
automatic changeover to / from comfort and
setback temperature periods.

Constant comfort temperature

The schedule is not in operation. Use this mode
when a constant comfort temperature is desired.

Constant setback temperature

The schedule is not in operation. Use this mode
when you are away on holiday, etc.

Standby

The selected circuit is stopped. The system is still
protected against frost.

Select circuit mode

2

The yellow

side of the

ECL Card

Go to display C.

Circuit I / II: Setting the desired room temperature

02

Desired room
temp. in
comfort mode

61

Desired room
temp. in
setback mode

Select the constant comfort mode.

Set the desired room temperature for the comfort
mode.

Select the constant setback mode.

Set the desired room temperature for the setback
mode.

Select the desired mode (section 2).

The setting of the desired room temperature is important even if
a room panel / remote control is not connected.

Is the room temperature too low?

Make sure that the radiator thermostat does not limit the room
temperature.
If you still cannot obtain the desired room temperature by
adjusting the radiator thermostats, the flow temperature is too
low. Increase the desired room temperature.

Setting the desired DHW charging temperature

Choose the DHW charging settings by pushing
the button until there is no circuit indication
(display / lights).

07

Desired DHW
charging temp.
in comfort mod e

01

Desired DHW
charging temp. in
setback mode

Select the constant comfort mode.

Set the desired DHW charging temperature for
the comfort mode.

Select the constant setback mode.

Set the desired DHW charging temperature for
the setback mode.

Select the desired mode (section 2).

Set your room and DHW
charging temperature

3

The yellow
side of the
ECL Card

1a

Choose your favorite display
(circuit I)

Choose the display - A, B, or C - for daily
operations.

Room temperature - display A

Line

Circuit

Outdoor

temp.

Room temp. (EC A 60 / 61)

913

20

A

Desired room tem p.

The display will only show a value if an ECA 60 / 61 is connected.
If not, two bars will be shown.

System information - display B

Line

Circuit

Flow temp.

(S2)

State of controlled unit s

5

1

2

ON

036

B

1

ON

3

ON

2

Return temp.
(S3)

Today's schedule - display C

Line

Circuit

Outdoor

temp.

(S1)

Time

8

0 3 6 9 12 15 18 21 24

1

023

5

C

3

Today's schedule

Desired room tem p.

The controller automatically reverts to display C if the card has
been reinserted or the power supply has been interrupted.

If the temperature value is displayed as "- -", the sensor in
question is not connected. "- - -" means that the sensor is short­circuited.

The yellow

side of the

ECL Card

Choose the display - A, B, or C - for daily
operations.

Room temperature - display A

Line

Circuit

Outdoor

temp.

Room temp. (EC A 60 / 61)

023

20

-

A

Desired room tem p.

The display will only show a value if an ECA 60 / 61 is connected.
If not, two bars will be shown.

System information - display B

Line

Circuit

Flow

temp.

(S4)

State of controlled unit s

1

2

ON

B

1

ON

3

ON

5 036

2

Return temp. (S5)

* A value is displaye d only if S5 is selected as return temp.
sensor (line 140)

Today’s schedule - display C

Line

Circuit

Outdoor

temp.

Time

8

0 3 6 9 12 15 18 21 24

1

0235-

C

3

Today's schedule

Desired room tem p.

The controller automatically reverts to display C if the card has
been reinserted or the power supply has been interrupted.

If the temperature value is displayed as "- -", the sensor in
question is not connected. "- - -" means that the sensor is short­circuited.

Choose your favorite display
(circuit II)

1b

The yellow
side of the
ECL Card

Choose the DHW settings by pushing the button
until there is no circuit indication (display / lights).

Choose the display - A, B, or C - for daily
operations.

DHW temperature - display A

Line

DHW temp. (S6)

07

2

A

5

Desired charging temp.
(S2)

DHW temperature - display B

Line

Charging

temp.

(S5)*

State of controlled unit s

B

2

5

--

--

3

ON

1

1

ON

2ON2

Lower tank temp.
(S5)**

* A value is displaye d only if S5 is selected as charging temp.
sensor (line 140 = 2)
** A value is displayed only if S5 is sele cted as lower tank temp.
sensor (line 140 = 1). S6 is the upper tank temp. sensor.

DHW schedule - display C

Line

Time

5

0 3 6 9 12 15 18 21 24

0

C

0

DHW schedule

There is one common schedule for all days of the week.
See section 4 for the setting procedure.

The controller automatically reverts to display C if the card has
been reinserted or the power supply has been interrupted.

If the temperature value is displayed as "- -", the sensor in
question is not connected. "- - -" means that the sensor is short­circuited.

Choose your favorite
display (DHW)

1c

Save energy - save money - improve
your comfort temperature

The ECL Comfort controller is designed by Danfoss for
the automatic temperature control of heating, hot-water,
ventilation and cooling systems.

Some of the advantages of the ECL Comfort controller system
are:

• Secure control and the optimum use of energy resources.

• Control of system temperatures according to seasonal
changes and variations in outdoor temperatures.

• Setback temperature periods and low energy consumption
while you are out or asleep save heating costs.

Operating the ECL Comfort controller

When operating the controller it is advisable to keep the lid
open in order to view the entire display.
During operation the ECL Card must be inserted with the
yellow side facing you.
The ECL Card, which is equipped with a memory chip, is
simple and easy to understand.
The ECL Card is divided vertically into two columns each
representing a circuit.
Horizontally the ECL Card is divided into lines that
represent the different control and programming options
for the two circuits. Each line is shown in the display of the
controller, which gives you an instant overview of the
operation, settings etc.

How to use the ECL Comfort User's Guide

This guide provides you with an easy instruction for the ECL
Comfort controller.
The Installer's Guide, the grey section (turn the guide over),
contains the complete list of factory settings and various
detailed adjustments that ensure an efficient and continuous
operation of your system.

Table of Contents

Daily use

Section

1 Choose your favorite display

2 Select circuit mode

3 Set your room and DHW charging temperature

4 Set your personal schedule

5 Advantages of the ECL Card

6 Hot points

7 Definitions

The documentation for the ECL Comfort controller is composed
of numbered sections. Only sections that are relevant to your
ECL Comfort controller are included here.

Installer's Guide:

Grey sections 10 and onwards. Turn the guide over.

The functions can only be realized with ECL Comfort 300 and as of
controller version 1.08.

Your personal schedule:

Factory set tings are grey.

6-8

16-22

8-23

5-8 18-22

8-23

Heating II 0 3 6 9 12 15 18 21 24

1 Monday

2 Tuesday

3 Wednesday

4 Thursday

5 Friday

6 Saturday

7 Sunday

Heating I 0 3 6 9 12 15 18 21 24

1 Monday

2 Tuesday

3 Wednesday

4 Thursday

5 Friday

6 Saturday

7 Sunday