Danfoss ECL Comfort 300 - C37 Operating instructions

How to use this guide

This guide is divided into two parts:

• Daily Use (Turn the guide over)

Yellow sections 01 - 09

• 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 and hot water 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 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.

Before you start

VI.7C.E3.02

Identifying the system type

10

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.

Alternatives using the same settings:

• Heat exchanger or direct district heating

• 2 - or 3-way control valve

Alternatives which require different settings:

• Primary or secondary connected hot water circuit

• Charging pump or diverting valve in charging circuit

Installation

Line 51 Water pump / diverting valve

Setting

OFF

Line 52 Closed valve / PI-regulation

Setting

OFF

Line 53 PI reference when heating HW

Setting

OFF

Heating system type 1

Heating system and secondary connected hot water

charging system

Line 51 Water pump / diverting valve

Setting

ON

Line 52 Closed valve / PI-regulation

Setting

OFF

Line 53 PI reference when heating HW

Setting

OFF

Heating system type 2

Heating system and secondary connected hot water

charging system

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

Heating system and secondary connected hot water

system

Line 51 Water pump / diverting valve

Setting

OFF

Line 52 Closed valve / PI-regulation

Setting

OFF

Line 53 PI reference when heating HW

Setting

OFF

Heating system type 4

Heating system and secondary connected hot water

system

Line 51 Water pump / diverting valve

Setting

ON

Line 52 Closed valve / PI-regulation

Setting

OFF

Line 53 PI reference when heating HW

Setting

OFF

Heating system type 5

Heating system and primary connected hot water

Line 51 Water pump / diverting valve

Setting

ON

Line 52 Closed valve / PI-regulation

Setting

OFF

Line 53 PI reference when heating HW

Setting

ON

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.

Jumper from 1 to 5

Jumper from 5 to 10

Jumper from 10 to 12

Jumper from 12 to 14

Jumper from 2 to common N-terminal

Establish these jumpers:

Installation

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 into each screw

terminal.

1 L Voltage supply 230 V a.c.

2 N Voltage supply 230 V a.c.

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

4 M1 Gear motor - close 0.2 A 230 V a.c.

5 Phase for M1

9 P1 Circulation pump for 4(2)A 230 V a.c.

heating circuit

10 Phase for pump relay - R1

11 P2 Charging pump -primary 4(2)A 230 V a.c.

12 Phase for pump relay - R2

13 P3 Charging pump - secondary 4(2)A 230 V a.c.

14 Phase for pump relay - R3

Terminal Description Max. load

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

21 and 16 Hot-water sensor

- lower (S5) ESMU/ESMB

22 and 16 Hot-water sensor

- upper (S6)* ESMU/ESMB

Connecting the sensors

Establish the jumper from 16 to common terminal

Terminal Description Type (recommended)

Installation

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).

* Connected if only one tank sensor is used.

Installation

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.

14

Placing the temperature

sensors

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

windows.

Installation

Hot water temperature sensor

(ESMU or ESMB types)

Place the hot water sensor according to the

manufacturer’s specification.

15

Inserting the ECL Card

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 sec. the display

will change to display line C.

The controller is now ready to be set to control your

heating system.

Installation

Software version

for ECL Card

Line

Circuit

Time

Outdoor

temperature

Desired

room

temperature

CYp

0

O9C

C73

01 101

8

0 3 6 9 12 15 18 21 24

1

913

5

C

3

Software version

for controller

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.

Installation

16

Adjusting the ECL Card

settings

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.

CYp

0

O9C

When the copying is finished display line C will appear

8

0 3 6 9 12 15 18 21 24

1

913

5

C

3

You can make other changes in the day plan, set

time and date or change settings

(see User’s Guide).

General principles

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.

Use the arrow buttons to move from line to line

of the ECL Card, for example line 2:

Line

indicator

Settings to

be adjusted

Value in range

indicator

Circuit

1

ON

2

ON

09

2

04

3

ON

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 options.

The circuit selector shifts between circuit I

and II. You can adjust all settings and service

parameters individually in both circuits, ie.

circuit II.

Go to line 9 (bottom line)

Accept to copy as indicated. No other keys are

active.

Basic set-up

17

Setting the time and date -

Line A

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.

The grey side of the ECL Card.

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.

Basic set-up

09

01

56019

5

A

3

Actual time

Month, day

Year

Monitoring temperatures and

system units - Line B

18

Go to line B.

Note! This display also shows actual and reference values

of flow and return temperature during hot water charging.

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.

Push the shift button to see:

- the calculated flow temperature

- the return temperature set points

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

Temperature

Ohm

Basic set-up

0360

B

3

ON

1

ON

2

ON

Flow temperature

Return temperature

Select circuit II to see the actual temperatures of

upper and lower tank sensors.

35

B

52

3

ON

1

ON

2

ON

S6 actual

Upper tank sensor

S5 actual

Lower tank sensor

19

Manual control - Line B

Basic set-up

The grey side of the ECL Card.

Go to line B.

Shift to manual mode

Select the unit you want to control. The

selected unit symbol will flash.

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.

Valves close or open while the

relevant button is pressed

Pumps are switched off or on

when the relevant button is pressed.

1

ON

1

Shift away from manual mode.

0360

B

3

ON

1

ON

2

ON

Controlled

units

Controller mode

Setting the heat curve - Line C

20

Go to line C.

The symbol for the slope of the heat curve will

flash.

Make your adjustments.

The grey side of the ECL Card.

8

C

1

3

ON

0

1

ON

2

ON

Slope

Displacement

Circuit Setting range Factory setting

I 0.2 ... 3.4 1.8

Slope

Adjust the slope of the heat curve, if required.

If you want to adjust the parallel displacement of

the heat curve, push the shift button. The symbol

for the parallel displacement will flash.

Circuit Setting range Factory setting

l -9... +9 0

Parallel displacement

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

Circuit Setting range Typical setting

Slope

Circuit Setting range Typical setting

I -9 ... +9 0

Parallel displacement

I 0.2 ... 3.4 1.0

Floor heating systems

This controller is factory set for radiator systems, which are

typically high flow temperature systems.

To control floor heating systems, which are typically low flow

temperature systems, you need to change the heat curve

according to your type of system.

Basic set-up

Heating cut-out - Line 1

21

1

2

ON

8

1

ON

3

ON

The grey side of the ECL Card.

Set the outdoor temperature limit at which you

want the heating system to stop.

Go to line 1.

Circuit Setting range Factory setting

I 10 ... 30 °C 18 °C

1 Limit for heating cut-out

Basic set-up

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 Tout symbolises the heat stored in the

building.

18°C

Temp

Actual T

out

Accumulated T

out

Time

Heating Heating off Heating

Flow temperature limits -

Line 2

22

The grey side of the ECL Card.

Go to line 2.

The left end of the range indicator flashes.

Adjust the min. limit of your heating system.

Select the max. limit. The right end of the range

indicator flashes.

Adjust the max. limit.

Circuit Setting range Factory setting

I 10 ... 110 °C min. 40 °C max. 90 °C

2 Flow temperature min., max. limits

Basic set-up

1

ON

2

ON

09

2

04

3

ON

Max. flow

temperature

Min. flow tem-

perature

Temperature

range for flow

temperature

Room temperature influence -

Line 3

23

The grey side of the ECL Card.

Basic set-up

+

÷

1

2

ON

0-4

0

3

1

ON

3

ON

This section is only relevant if you have installed a room

sensor. There are two basic principles for control of the

room temperature influence:

The max. influence determines how much the

room temperature should influence the flow

temperature.

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.

Go to line 3.

Select the max. influence.

The bar below the range indicator flashes in the

right side of the display.

Adjust the max. influence.

T

ROOM

set

Influence

Max. limitation

Circuit Setting range Factory setting

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

3 Room temperature influence

Min.

influence

Max.

influence

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 flow temperature reference is changed by

2 x -40 x 0.1 x H = -14.4 degrees.

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Danfoss ECL Comfort 300 - C37 Operating instructions

Danfoss ECL Comfort 300 - C37 Operating instructions

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