Danfoss ECL Comfort 300 - C35 Operating instructions

Before you start

How to use this guide

This guide is divided into two parts:

• Daily Use (Turn the guide over)

Yellow sections 01 - 07

• Installation and maintenance:

Grey sections 10 and onwards

Save energy - save money - improve your comfort

temperature

The ECL Comfort controller is designed by Danfoss for

temperature control of heating systems.

The ECL Comfort controller ensures you of the following;

• Room and hot water temperatures will be adjusted to

yourpersonal settings.

• Lower temperatures and lower energy consumption

reduce costs and ensure optimum use of energy

resources.

• The automatic pump motion program protects the

circulation pump against blocking.

Sketch an outline of your heating system

The ECL Comfort controller is designed for a wide range of

heating systems with different configurations and

capacities.

If your heating system differs from the diagrams shown in

section 10, you may want to sketch an outline 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 the final adjustments before the end-

user takes over.

Note! The controller is pre-programmed with factory

settings which are shown in the relevant sections of this

guide.

VI.7C.D2.02

Identifying the system type

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 to your system and make

your own combinations.

10

Installation

Alternatives using the same settings:

• Heat exchanger or direct district heating

• 2-, 3-, or 4-way control valve

Alternatives which require different settings:

• Primary or secondary connected hot water circuit

• Charging pump or diverting valve in charging circuit

Heating system type 2

Line 51 Diverting valve/charging pump

Setting

OFF

Line 53 PI reference when heating HW

Setting

OFF

Heating system type 1

Line 51 Diverting valve/charging pump

Setting

ON

Line 53 PI reference when heating HW

Setting

OFF

Installation

Note!

System diagrams in this instruction are principal drawings

and do not contain all components which are necessary in

heating systems.

Heating system type 3

Line 51 Diverting valve/charging pump

Setting

ON

Line 53 PI reference when heating HW

Setting

ON

Heating system type 4

Line 51 Diverting valve/charging pump

Setting

ON

Line 53 PI reference when heating HW

Setting

ON

Installation

Mounting the ECL Comfort

controller

11

For easy access, you should mount the ECL Comfort

controller near the heating unit. 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 92 x 138 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.

Installation

Connecting the 230 V a.c. units

12

Electrical connections -

230 V a.c.

Installation

Establish these jumpers:

Jumper from 1 to 5

Jumper from 5 to 10

Jumper from 10 to 12

Jumper from 2 to common N-terminal

1 L Voltage supply

230 V a.c.

2 N Voltage supply

230 V a.c.

3 M1 Gear motor - open max 0.2 A 230 V a.c.

4 M1 Gear motor - close

alt.: ABV thermo

actuator max 0.2 A 230 V a.c.

5 Phase for M1

9 P1 Circulation pump for

heating circuit max 4(2)A 230 V a.c.

10 Phase for pump relay

11 P2 Charging pump/

diverting valve max 4(2)A 230 V a.c.

12 Phase for pump relay

Terminal Description Max. load

Cable cross section for voltage conductor: 0.75 - 1.5 mm

2

Cable length: Max. 50 m.

Electrical connections

Max. 2 x 1.5 mm

2

cables can be inserted in each screw

terminal.

Connecting the sensors

Installation

Establish the jumper from 16 to common terminal

15 and 16 System device bus

17 and 16 Outdoor sensor (S1) ESM-10

18 and 16 Room sensor (S2) ESM-10

19 and 16 Flow sensor (S3) ESMU/ESM-11/ESMC

20 and 16 Return sensor (S4) ESMU/ESM-11/ESMC

22 and 16 Hot-water sensor (S6) ESMU/ESMB

Terminal Description Type (recommended)

Cable cross section for sensor connections: Min. 0.4 mm

2

Total cable length: Max. 50 m (sensors and bus).

NOTE! Cable lengths above 100 m may cause noise sensibility

(EMC).

Connecting the 24 V a.c. units

13

Electrical connections -

24 V a.c.

Establish these jumpers:

Jumper from 1 to 5

Jumper from 5 to 10

Jumper from 10 to 12

Jumper from 2 to common N-terminal

1 L Voltage supply

24 V a.c.

2 N Voltage supply

24 V a.c.

3 M1 Gear motor - open 1 A 24 V a.c.

4 M1 Gear motor - close

alt.: ABV thermo

actuator 1A 24 V a.c.

5 Phase for M1

9 K1* Relay for circulation pump

for heating circuit I 4(2) A 230 V a.c.

10 24 V a.c. supply for

pump relay R1

11 K2 Relay for charging pump

/diverting valve for hot-

water service circuit iI 4(2)A 230 V a.c.

12 24 V a.c. supply for

pump relay R2

Terminal Description Max. load

Cable cross section for voltage conductor: 0.75 - 1.5 mm

2

Cable length: Max. 50 m.

Electrical connections

Max. 2 x 1.5 mm

2

cables can be inserted in each screw

terminal.

* K1/K2 auxiliary relay coil 24 V a.c.

Connecting the sensors

Establish the jumper from 16 to common terminal

15 and 16 System device bus

17 and 16 Outdoor sensor (S1) ESM-10

18 and 16 Room sensor (S2) ESM-10

19 and 16 Flow sensor (S3) ESMU/ESM-11/ESMC

20 and 16 Return sensor (S4) ESMU/ESM-11/ESMC

22 and 16 Hot-water sensor (S6) ESMU/ESMB

Terminal Description Type (recommended)

Cable cross section for sensor connections: Min. 0.4 mm

2

Total cable length: Max. 50 m (sensors and bus).

NOTE! Cable lengths above 100 m may cause noise sensibility

(EMC).

Installation

14

Placing the temperature

sensors

Flow temperature sensor

(ESMU, ESM-11 or ESMC types)

Place the sensor max. 15 cm from the mixing point. In

systems with heat exchanger, Danfoss recommends the

ESMU-type to be inserted into the exchanger flow outlet.

Make sure that the surface of the pipe is clean at the area

where the sensor is mounted.

Do not move the sensor after it has been fastened in

order to avoid damage to the sensor element.

It is important that the sensors are mounted in the correct

position in your heating system.

Special attention should be paid to the following sensors:

Return temperature sensor

(ESMU, ESM-11 or ESMC types)

The return sensor should always be placed max. 15 cm

from the mixing point. It should always be placed on a pipe

in which the water flow never stops.

Room temperature sensor

(ESM-10, ECA 60 and 61 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.

Outdoor temperature sensor

(ESM-10 type)

The outdoor sensor should be mounted on the north side of

the building where it is less likely to be exposed to direct

sunshine. It should not be placed close to doors or win-

dows.

Hot water temperature sensor

(ESMU or ESMB types)

Place the hot water sensor according to the

manufacturer’s specification.

15

Inserting the ECL Card

The controller is now ready to be set to control your

heating system.

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 factory settings

and heating system type from the ECL Card. After copying,

the display will show the heating system type the controller

is set to control. After approx. 10 seconds the display will

change to display line C.

Desired room

temperature

CYp

0

O9C

C53

01 101

8

0 3 6 9 12 15 18 21 24

1

913

5

C

3

ECL Card

version

Controller

version

Line

Circuit

Time

Outdoor

temperature

Installation

Understanding the ECL Card

The ECL Card contains factory settings for a standard

heating system. If the actual heating 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 time periods, 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 settings.

If the card is removed please note that:

• The controller settings are locked after approx. 10 min.

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

sunshine

If several controllers are installed in the heating system

you can write a title on the ECL Card with a permanent

ink pen.

0

1

ON

2

ON

094

2

16

Adjusting the ECL Card

settings

General principles

When the copying is finished display line C will appear

Basic set-up

When the controller is connected and operating you can

check and adjust all or some of the basic settings on the

grey side of the ECL Card.

CYp

0

O9C

8

0 3 6 9 12 15 18 21 24

1

913

5

C

3

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. Insert the ECL Card with the

yellow side facing you.

You can make other changes in the day plan, set time and

date or change settings

(see User’s Guide).

Use the arrow buttons to move from line to

line of the ECL Card, for example line 2:

Settings to

be adjusted

Value in

range indicator

Line

indicator

Circuit

Use the minus/plus 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 possibilities

The circuit selector shifts between circuit I and II.

You can adjust all settings and service

parameters individually in both circuits.

Go to line 9 (bottom line)

Accept to copy as indicated. No other keys are

active

17

Setting the time and date -

Line A

Basic set-up

The grey side of the ECL Card.

In case of a power failure which lasts longer than 12 hours,

the time and the date have to be set again.

All other settings are stored as programmed.

Go to line A.

Use the shift button to switch between minutes,

hours, year, month and day

Set the correct time and date

Use the yellow side of the ECL Card to enter the day

plan settings.

See User’s Guide, section 4.

09

01

56019

5

A

3

Actual time

Month, day

Year

Monitoring temperatures and

system units - Line B

18

Basic set-up

The activity of the motorized 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.

The grey side of the ECL Card

Go to line B

5

1

ON

2

ON

036

B

Controlled units

State indicator

Return temperature

Flow

temperature

Push the shift button to see:

- the calculated flow temperature

- the return temperature set points

Temperature

Relationship between temperature and ohmic value

-10 °C 961 Ohm

0 °C 1000 Ohm

10 °C 1039 Ohm

20 °C 1078 Ohm

30 °C 1117 Ohm

40 °C 1156 Ohm

50 °C 1195 Ohm

60 °C 1234 Ohm

70 °C 1273 Ohm

-50

800

900

1000

1100

1200

1300

1400

1500

1600

-25 0 25 50 75 100 125 150

Ohm

19

Go to line B

Manual control - Line B

Basic set-up

Check the activation direction of the motorized valve either

by looking at it or by feeling whether the temperature of the

actual pipe changes as expected.

The grey side of the ECL Card

Shift to manual mode

Select the unit you want to control. The

selected unit symbol will flash.

Valves close or open while the

relevant button is pressed

Pumps are switched off or on

when the relevant button is pressed.

1

ON

5

1

2

ON

036

B

1

ON

Controlled

units

Controller

mode

1

Shift away from manual mode.

Setting the heat curve - Line C

20

Basic set-up

The grey side of the ECL Card

Adjust the slope of the heat curve, if required.

Make your adjustments.

Circuit Setting range Factory setting

I 0.2 ... 3.4 1.8

Slope

Circuit Setting range Factory setting

I -9... +9 0

Parallel displacement

8

C

1

2

ONON

2

ON

3

ON

0

Go to line C.

The symbol for the slope of the heat curve will

flash.

Slope

Displacement

8

C

1

2

ONON

2

ON

3

ON

0

If you want to adjust the parallel displacement

of the heat curve, push the shift button. The

symbol for the parallel displacement will flash.

Basic set-up

-20 -10 0 10 20-30

10

20

30

40

50

60

70

80

90

1,8

1,2

0,6

0,2

2,2

˚C

Floor heating systems

This controller is factory set for radiator systems which typically

are high flow temperature systems.

To control floor heating systems, which typically is low flow

temperature systems, you need to change the heat curve

according to your type of system.

Circuit Setting range Typical setting

Slope

Circuit Setting range Typical setting

I -9 ... +9 0

Parallel displacement

I 0.2 ... 3.4 1.0

Heating cut-out - Line 1

21

Basic set-up

The grey side of the ECL Card

1

2

ON

8

1

ON

Circuit Setting range Factory setting

I 10 ... 30 °C 18 °C

1 Limit for heating cut-out

Go to line 1

Set the outdoor temperature limit at which you

want the heating system to stop.

This function can save energy by stopping the heating

system when the outdoor temperature gets above a set limit.

The heating system is activated again when the actual

outdoor and the accumulated temperatures get below the set

limit.

The accumulated T

out

symbolises the heat stored in the

building.

18 ˚C

Temp

Actual T

out

Accumulated T

out

Time

Heating Heating off Heating

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Danfoss ECL Comfort 300 - C35 Operating instructions

Danfoss ECL Comfort 300 - C35 Operating instructions

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