Danfoss ECL Comfort 300 - C66 Operating instructions

Brand: Danfoss

Model: ECL Comfort 300 - C66

Type: Operating instructions

Table of Contents

Daily use

Section

1 Choose favourite display

2 Select controller mode

3 Adjust room and hot water temperature

4 Set personal day plan

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.

Your personal week plan:

Heating

03691215182124

1 Monday

2 Tuesday

3 Wednesday

4 Thursday

5 Friday

6 Saturday

7 Sunday

Hot Water

03691215182124

1 Monday

2 Tuesday

3 Wednesday

4 Thursday

5 Friday

6 Saturday

7 Sunday

Factory settings are grey.

823-

5 - 8 18 - 22

6-8 16 - 22

Installation and maintenance. Grey sections 10 and

onwards. Turn the guide over.

This guide is associated to ECL Card 087B4757

Installer:

By:

Date:

Table of Contents

Sections of the Installer’s part of this 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 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 Setting PI-regulation - Line 4 - 7

27 Hot water controller - line 1 and 2

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

Daily use, turn the guide over sections 01 - 07

1 Choose favourite display

2 Select controller mode

3 Adjust room and hot water temperature

4 Set personal day plan

5 Advantages of the ECL Card

6 Hot points

7 Definitions

823-

ECL COMFORT

ECL Comfort

Installation and

Maintenance

Mixing controller with PI-controlled

hot water service

C66

VI.7C.C4.02

ECL COMFORT

ECL Comfort

User’s Guide

C66

The shown diagram is a fundamental and simplified example

and does not contain all components that are necessary in

heating systems.

If the system you are about to install is differs from the

shown diagram of a standard heating system, feel free to

sketch an outline for comparison. Adaptation of heating

systems, see section 10.

List of components:

ECL Comfort 300

S1 Outdoor temperature sensor (ESM-10)

S2 Room temperature sensor (ESM-10)

S3 Flow temperature sensor (ESM-)

S4 Return temperature sensor (ESM-) - circuit I

S5 Flow temperature sensor for hot water (ESM-) - circuit II

S6 Return temperature sensor (ESM-) - circuit II

P1 Circulation pump for heating - circuit I

P3 Circulation pump for hot water - circuit II

M1 Mixing valve with motor - circuit I

M2 Mixing valve with motor - circuit II

Installation & maintenance

The ECL Card, grey side

for installation and maintenance.

Lines A to C, and lines 1 to

7 for basic settings, see overview

section 30.

Extended service parameters,

see section 31

The ECL Card: Installer’s

instruction

The grey side of the card must face

you when you change settings. For

daily use and during start-up the

yellow side of the card must face you.

Circuit indicator Circuit

selector

Shift

button

Adjustment

Controller

mode

Controller mode

Manual operation (used only at

maintenance and service)

Automatic operation

Constant comfort temperature

Constant reduced 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

heating and hot water circuit.

The circuit indicator shows the selected circuit.

The ECL Card

For daily use and your personal adjustments, the yellow

side of the ECL Card must face you.

The display

Each line, A, B, C, 1, 2 etc. of the ECL Card has its own

display. See section 1.

Controller mode

Manual operation (used only at

maintenance and service)

Automatic operation

Constant comfort temperature

Constant reduced 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

heating and hot water circuit.

Room

temperature /

Hot water circuit II

Heating system

information

Today’s

programme

Day plans

Hot water - circuit II

Heating - circuit I

Line indicator

Circuit

0 3 6 9 12 15

0 3 6 9 12 15 18 21 24

036

0 3 6 9 12 15

0 3 6 9 12 15 18 21 24

913

036

0 3 6 9 12 15 18 21 24

913

0 3 6 9 12 15 18 21 24

199

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

your personal 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.

However, you might come across some settings that

are not listed in this instruction. These settings are used in

connection with optional modules, and you can find a

description of the settings and the corresponding

parameters in the instruction for the optional module in

question.

How to use this guide

This guide is divided into two parts:

• Daily Use (turn the guide over)

Yellow sections 1-7

• Installation and maintenance:

Grey sections 10 and onwards

Before you start

VI.7C.C4.02

Note!

System diagrams in this instruction are principal drawings and

do not contain all components which are necessary in heating

systems.

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.

Check the setting of line 24 in circuit I (gear motor/thermo actuator).

Heating system type 1

Indirectly connected heating circuit and PI-regulated hot

water service circuit

Heating system type 2

Directly connected heating circuit and indirectly connected

PI-regulated hot water service circuit

Check the setting of line 24 in circuit I (gear motor/thermo actuator).

Alternatives using the same settings:

• Heat exchanger or direct district heating

Installation

Mounting the ECL

Comfort controller

11a

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

11b

Connecting the sensorsConnecting the 230 V a.c. units

12a

Electrical connections -

230 V a.c.

Cable cross section for voltage conductor: 0.75 - 1.5 mm

Cable length: Max. 50 m

Electrical connections

Max. 2 x 1.5 mm

cables can be inserted into each screw

terminal.

Cable cross section for sensor connections: Min. 0.4 mm

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

Cable type: Copper cable.

Note! Cable lengths above 100 m may cause noise sensibility

(EMC).

Establish these jumpers:

Jumper from 1 to 5

Jumper from 5 to 8

Jumper from 8 to 10

Jumper from 10 to 14

Jumper from 2 to common N-terminal

Establish the jumper from 16 to common terminal.

Terminal Description Type (recommended)

15 and 16 System device bus

17 and 16 Outdoor sensor (S1) ESM-10

18 and 16 Room sensor (S2)

circuit I ESM-10

19 and 16 Flow sensor (S3)

circuit I ESMU/ESM-11/ESMC

20 and 16 Return sensor (S4)

circuit I ESMU/ESM-11/ESMC

21 and 16 Hot water flow sensor

(S5) circuit II ESMU/ESM-11/ESMC

22 and 16 Hot water return

sensor (S6) circuit II ESMU/ESM-11/ESMC

Installation

12b

Terminal Description Max. load

1 L Supply voltage 230 V a.c.

2 N Supply voltage 230 V a.c.

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

4 M1 Gear motor - close/circuit I

alt.: ABV thermo actuator 0.2 A 230 V a.c.

5 230 V a.c. supply for

M1/circuit I

6 M2 Gear motor - open/circuit II 0.2 A 230 V a.c.

7 M2 Gear motor - close/circuit II 0.2 A 230 V a.c.

8 230 V a.c. supply for

M2/circuit II

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

heating circuit I

10 230 V a.c. supply for

pump relay R1

13 P3 Circulation pump for

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

14 230 V a.c. supply for

pump relay R3

Connecting the sensorsConnecting the 24 V a.c. and 230 V a.c. units

13a

Electrical connections -

24 V a.c.

Establish the jumper from 16 to common terminal.

Terminal Description Type (recommended)

15 and 16 System device bus

17 and 16 Outdoor sensor (S1) ESM-10

18 and 16 Room sensor (S2)

circuit I ESM-10

19 and 16 Flow sensor (S3)

circuit I ESMU/ESM-11/ESMC

20 and 16 Return sensor (S4)

circuit I ESMU/ESM-11/ESMC

21 and 16 Hot water flow sensor

(S5) circuit II ESMU/ESM-11/ESMC

22 and 16 Hot water return

sensor (S6) circuit II ESMU/ESM-11/ESMC

Cable cross section for sensor connections: Min. 0.4 mm

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

Cable type: Copper cable.

NOTE! Cable lengths above 100 m may cause noise sensibility

(EMC).

Cable cross section for voltage conductor: 0.75 - 1.5 mm

Cable length: Max. 50 m

Electrical connections

Max. 2 x 1.5 mm

cables can be inserted into each screw

terminal.

* K1/K3 auxiliary relay

Coil: 24 V a.c.

Contacts: 4A 230 V a.c.

Establish these jumpers:

Jumper from 1 to 5

Jumper from 5 to 8

Jumper from 8 to 10

Jumper from 10 to 14

Jumper from 2 to common N-terminal

Terminal Description Max. load

1 L Supply voltage 24 Vac

2 N Supply voltage 24 Vac

3 M1 Gear motor - open/cir. I 1.0 A 24 V a.c.

4 M1 Gear motor - close/cir. I

alt.: ABV thermo actuator 1.0 A 24 V a.c.

5 24V a.c. supply for

M1/cir. I

6 M2 Gear motor - open/cir. II 1.0 A 24 V a.c.

7 M2 Gear motor - close/cir. II 1.0 A 24 V a.c.

8 24V a.c. supply for

M2/cir. II

9 K1* Relay for circulation pump 4(2)A 24 V a.c.

for heating circuit I

10 24V a.c. supply for

pump relay R1

13K3* Relay for circulation pump

for hot water service circuit II 4(2)A 24 V a.c.

14 24V a.c. supply for

pump relay R3

Installation

13b

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:

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 di-

rect sunshine. It should not be placed close to doors or

windows.

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.

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.

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 can 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 ECL 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.

Line

Circuit

Time

Outdoor

temperature

Desired room

temperature

C99

0 3 6 9 12 15 18 21 24

913

15a

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

15b

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.

Go to line A.

2410

Actual time

Month, day

Year

Use the shift button to switch between hours,

minutes, 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.

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.

C99

When the copying is finished display line C will appear

0 3 6 9 12 15 18 21 24

913

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

094

Use the minus/plus buttons to adjust the

setting(s).

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

The grey

side of the

ECL Card

Select the unit you want to control. The selected

unit symbol will flash.

The gear motor

opens or closes

the valve as long as the the relevant button is

pressed.

The thermo actuator

(according to version *)),

closes (NO) or opens (NC)

the valve as long as the relevant button is

pressed.

*) NO - normally open

NC - normally closed

Pumps are switched off or on when the

relevant button is pressed.

Manual control - Line B

Go to line B.

Shift to manual mode

Monitoring temperatures

and system units - Line B

Go to line B.

The activation direction 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.

1 2

036

Controlled units

State indicator

Return temperature

Flow

temperature

Push the shift button to see:

- the calculated flow temperature

- the return temperature set points.

1 2

036

Controlled

units

Controller mode

The circuit selector shifts between circuit I and II.

Basic set-up

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

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.

This operation applies to both circuits. Press the

button to select circuit II.

Note!

During manual operation, the pump motion is OFF.

The grey

side of the

ECL Card

The grey

side of the

ECL Card

-20 -10 0 10 20-30

1.0

1.4

0.6

0.2

1.8 2.2 3.0 3.4

100

110

2.6

Setting the heat curve -

Line C

20a

Go to line C.

The symbol for the slope of the heat curve will

flash.

1 2

Slope

Displacement

Basic set-up

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.

Make your adjustments.

20b

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 system type.

Slope

Circuit Setting range Factory setting

I 0.2 ... 3.4 1.8

Parallel displacement

Circuit Setting range Factory setting

l -9... +9

Slope

Setting range Typical setting

0.2 ... 3.4 1.0

Parallel displacement

Setting range Typical setting

-9 ... +9 0

The grey

side of the

ECL Card

The grey

side of the

ECL Card

Flow temperature limits -

Line 2

Go to line 2.

094

Max. flow

temperature

Min.

flow

temperature

Temperature

range for flow

temperature

The left end of the range indicator flashes.

Adjust the min. limit of the heating system.

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

indicator flashes.

Adjust the max. limit.

Heating cut-out - Line 1

1 2

Set the outdoor temperature limit at which you

want the heating system to stop.

Go to line 1.

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 T

out symbolises the heat stored in the

building.

18 ˚C

Temp

Actual T

out

Accumulated T

out

Time

Heating Heating off Heating

1 Limit for heating cut-out

Circuit Setting range Factory setting

I 10 ... 30 °C 18 °C

2 Flow temperature min.-, max. limits

Circuit Setting range Factory setting

I 10 ... 110 °C min. 40 °C max. 90 °C

The grey

side of the

ECL Card

The grey

side of the

ECL Card

0-4

The room sensor in the reference room registers

the difference between the desired and the

actual room temperature. The flow temperature

reference will be corrected to eliminate this

difference.

B: Reference room 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 min. influence and a

negative value for max. influence.

set

Influence

Min. limitation

Max. limitation

ROOM

Room temperature

influence - Line 3

23a

This section is only relevant if you have installed a room

sensor. 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.

The max. influence determines how much the

room temperature should influence the flow

temperature.

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.

ROOM

set

Influence

Max. limitation

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.

Example

The actual room temperature is 2 degrees too low.

The influence at max. limitation (right corner of the display) is

set to

-20.

The influence at min. limitation(left corner of the display) is set

to 20.

Heat curve H is 1.8.

Result:

The flow temperature reference is changed by

2 x 20 x 0.1 x H = 7.2 degrees.

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 35.

Heat curve H is 1.8.

Result:

The flow temperature reference is changed by

2 x (-35) x 0.1 x H = -12.6 degrees.

Basic set-up

23b

3 Room temperature influence

Circuit Setting range Factory setting

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

The grey

side of the

ECL Card

The grey

side of the

ECL Card

Setting the PI-regulation -

Line 4-7

(Heating)

26a

Go to line 4.

Setting to be adjusted

Line

indicator

Set the proportional band.

A higher value will result in a stable, but slow

regulation of the flow temperature.

Go to line 5.

Set a high integration time constant to obtain a

slow but stable reaction to deviations.

A low integration time constant will make the

controller react fast but with less stability.

Go to line 6.

Set the running time of the motorized valve

according to the example on the opposite page.

This is the time it takes the valve to move from

closed to fully open position.

Go to line 7.

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.

Note! The valve is symmetrical around the

flow reference value.

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.

This time period will be characteristic for the system, and you

can evaluate the settings 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 %.

Note! Make sure there is a consumption when you set the

parameters.

Time

Temp

Critical time period

How to calculate the running time of the motorized valve

The running time of the motorized 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.

Basic set-up

VS2 15 3.0 AMV 100 90 270

VS2 15...25, VM2 15...25, AMV(E)

VB2 15...20 5.0 10, 20 15 75

VS2 15...25, VM2 15...25,

VB2 15...20 5.0 AMV(E) 30 3 15

VM2 32, VB2 25 7.0 AMV(E) 20 15 105

VM2 32, VB2 25 7.0 AMV(E) 30 3 21

Valve type Valve Actuator Actuator Running

stroke type speed time

(mm) (sec./mm) (sec.)

The grey

side of the

ECL Card

The grey

side of the

ECL Card

26b

4 Proportional band

Circuit Setting range Factory setting

I 1 ... 250 K 80 K

5 Integration time constant

Circuit Setting range Factory setting

I 5 ... 999 sec. 30 sec.

6 Running time of the motorized valve

Circuit Setting range Factory setting

I 5 ... 250 sec. 35 sec.

7 Neutral zone

Circuit Setting range Factory setting

I 0 ... 9 K 3 K

Go to line 4.

Go to line 5.

Set a high integration time constant to obtain a

slow but stable reaction to deviations.

A low integration time constant will make the

controller react fast but with less stability.

Go to line 7.

Set the neutral zone to a high value if you can

accept a large variation in flow temperature.

When the actual flow temperature lies within the

neutral zone, the controller does not

activate the motorized valve.

Go to line 6.

Set the running time of the motorized valve

according to the example on opposite page. This

is the time it takes the valve to move from closed

to fully open position.

Set the proportional band.

A higher value will result in a stable, but slow

regulation of the flow temperature.

Setting to be adjusted

Line

indicator

Basic set-up

Setting the PI-regulation

Line 4-7

(hot water service)

27a

Auto Tuning

The Auto Tuning function automatically determines the PI-

control parameters for domestic hot water control. Thus you

do not need to set the parameter lines 4, 5, 6, and 7 in

circuit II, as they are automatically set to the Auto Tuning

function.

Auto Tuning is typically used in connection with the

installation of the controller, but it can be activated when

needed, e.g. for an extra check of the control parameters.

Before starting the Auto Tuning, the tapping flow should be

adjusted to the relevant value (see table below).

If possible, any additional hot water consumption should

be avoided during the Auto Tuning process. Should the

tapping load vary too much, the Auto Tuning and controller

will return to the default settings.

Auto Tuning is set to ON/OFF by using the service

parameter line 173 in circuit II, press

(ON) and

(OFF). When the Auto Tuning is ended, the service

parameter is automatically set to OFF (default setting). This

will be indicated in the display.

Typically, the Auto Tuning process takes 7-14 minutes but

can sometimes take up to 25 minutes.

Important!

In order to meet the summer-/winter variations, the ECL

clock must be set to the correct date for an successful Auto

Tuning. The motor protection function (line 174) has to be

deactivated during Auto Tuning.

During tuning the circulation pump for tap water service

must be turned off. This is done automatically if the pump is

controlled by the ECL controller.

No. of Heat Constant tapping load

apartments transfer (kW) (l/min)

1-2 30-49 3

(or 1 tap 25% open)

3-9 50-79 6 (or 1 tap 50% open)

10-49 80-149 12 (or 1 tap 100% open)

50-129 150-249 18 (or 1 tap 100% + 1 tap 50% open)

130-210 250-350 24 (or 2 taps 100% open)

27b

Recommended tapping load

4 Proportional band

Circuit Setting range Factory setting

II 1 ... 250 K 80 K

5 Integration time constant

Circuit Setting range Factory setting

II 5 ... 999 sec. 20 sec.

6 Running time of the motorized valve

Circuit Setting range Factory setting

II 5 ... 250 sec. 15 sec.

7 Neutral zone

Circuit Setting range Factory setting

II 0 ... 9 K 3 K

Note!

Auto Tuning is only applicable in connection with valves

that are approved for Auto Tuning, i.e. the Danfoss types

VB 2 and VM 2 with split characteristic as well as

logarithmic valves such as VF and VFS.

The grey

side of the

ECL Card

The grey

side of the

ECL Card

Adapting the ECL Comfort controller to the heating

system

29b

Check list

✓

Turn the ECL Card so that the grey side faces

you.

Set the time and the date (Line A)

See section 17.

Check all settings referring to the grey side of the

ECL Card

See sections 20 to 27.

Check all settings in the extended service

parameters line 10 to 199.

If your heating system differs from the diagram

shown on the overleaf of the cover, you should

check and perhaps alter the service parameters.

Please pay special attention to line 35 and 36.

29a

Check list

✓

Is the ECL Comfort controller ready for use?

Make sure that the power supply is connected to

terminals 1 (Live) and 2 (Neutral).

See section 12 or 13.

Check that valves and pumps are connected to

the correct terminals.

See section 12 or 13.

Check that all sensors are connected to the

correct terminals.

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.

Select manual operation in the controller mode.

See section 2

in the user’s guide.

Check that valves open and close, and that

pumps start and stop when operated manually.

See section 19.

Check that the temperatures shown in display A

and B match the actual sensors, both for circuit

I (heating) and circuit II (hot water).

See section 1

in the user’s guide.

Control & overviews

ECL Card settings

(circuit II: Hot water service)

30b

ECL Card settings

(circuit I: Heating)

30a

Proportional band

1 - 250 K 80 K

Set the PI-regulation, see section 27.

Integration time constant

5 - 999 sec. 20 sec.

Set the PI-regulation, see section 27.

Running time of motorized valve

5 - 250 sec. 15 sec.

Set the PI-regulation, see section 27.

Neutral zone

0 - 9 K 3 K

Set the PI-regulation, see section 27.

A Time and date

B System information

Setting range Factory setting Your settings

See sections 16 & 17

See sections 18 & 19

Heat curve - Slope

0.2 - 3.4 1.8

Set the slope of the heat curve,

see section 20

Heat curve - Parallel displacement

-9...+9 0 K

Set the parallel displacement of the

heat curve, see section 20

Limit for heating cut-out

10 - 30 °C 18 °C

Saves energy by stopping the heating

system when the outdoor temperature gets

above a certain limit, see section 21.

Flow temperature min.-/max. limits

10 ... 110 °C min. 40, max. 90 °C

The limits for min. and max. flow

temperature, see section 22.

Room temperature influence

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

The room temperature’s influence on the

flow temperature control, see section 23.

Proportional band

1 - 250 K 80 K

Set the PI-regulation, see section 26.

Integration time constant

5 - 999 sec. 30 sec.

Set the PI-regulation, see section 26.

Running time of motorized valve

5 - 250 sec. 35 sec.

Set the PI-regulation, see section 26.

Neutral zone

0 - 9 K 3 K

Set the PI-regulation, see section 26.

A Time and date

B System information

C Heat curve

Setting range Factory setting Your settings

See sections 16 & 17

See sections 18 & 19

See section 20

Control & overviews

30 Return temperature limitation

(hot water service)

10 ... 110 °C 50 °C °C

35 Return temperature influence - max.

-9.9 ... 0 ... 9.9 °C -2 °C °C

36 Return temperature influence - min.

-9.9 ... 0 ... 9.9 °C0 °C °C

37 Adaptive function of return limitation

OFF/1 ... 50 25 °C

141 Override input selection

OFF/1 ... 6 OFF

173 Auto tuning

ON/OFF OFF

174 Motor protection

OFF/10...59 min OFF

31b

Service parameters

31a

10 Choice of time control unit

0 ... 5 0

11 Reduced temperature dependent

on outdoor temperature

OFF/-29 ... +10 °C -15 °C °C

12 Boost

0 ... 99% 0% %

13 Reference ramping

0 ... 99 min 0 min min

14 Optimising time constant

OFF/10 ... 59 OFF

15 Adaptive function of room

temperature

OFF/1 ... 30 OFF

17 Temperature reference feedback

OFF/1 ... 20 OFF

20 Optimisation based on room/outdoor

temperature

ON/OFF OFF

21 Total stop

ON/OFF OFF

22 Pump motion

ON/OFF ON

23 Valve motion

ON/OFF OFF

24 Gear motor/thermo actuator

ON/OFF ON

31 Return temperature limitation (X)

-30 ... +15 °C +15 °C

32 Return temperature limitation (Y)

10 ... 110 °C 40 °C °C

33 Return temperature limitation (X)

-30 ... +15 °C -15 °C °C

34 Return temperature limitation (Y)

10 ... 110 °C 60 °C °C

35 Return temperature influence - max.

-9.9 ... 0 ... +9.9 °C -2 °C °C

36 Return temperature

influence - min.

-9.9 ... 0 ... 9.9 °C0 °C °C

37 Adaptive function of return limitation

OFF/1 ... 50 25

43 Priority or parallel operation

OFF/1 ... 99 OFF

52 Closed valve/PI-regulation

ON/OFF OFF

141 Override input selection

OFF/1 ... 6 OFF

174 Motor protection

OFF/10...59 min OFF

Circuit I (heating)

Line Setting range Factory setting Your setting

Circuit II (hot water service)

Circuit I (heating)

196 Service pin LON

ON/OFF OFF

197 LON reset

ON/OFF ON

198 Summer time change

ON/OFF ON

199 Slave address

0 ... 9 15

Control & overviews

Service parameters

Line Setting range Factory setting Your setting

Extended Service

32b

Service parameters

10-11

-29 to +10 °C

The setting of reduced temperature depends on

the outdoor temperature, when the outdoor

temperature is higher than 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 reduced temperature setting will be

constant at all outdoor temperatures.

100%

-20 -10-29 0 10 2015

Reduction

Outdoor

temp

32a

Adjusting the service

parameters

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.

When you have entered all your personal settings, turn the

ECL Card over so that the yellow side faces you.

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 on the parameter list in

section 31.

Push repeatedly to reach the lines

numbered 10 and onwards.

Line

number

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 en-

ter the same line number.

See the service parameters in section 31.

Extended service

Choose between

0 ECL Comfort controller - day plan circuit I

1 Room panel ECA 60 or remote control

ECA 61 on address A

2 Room panel ECA 60 or remote control

ECA 61 on address B

Note! The time control of the hot water circuit is always

dedicated to the day plan of circuit II.

10 Choice of time control unit

Circuit Setting range Factory setting

I 0 ... 5 0

Dedicates the unit for the time control of the comfort and

reduced temperature periods

11 Reduced temperature dependent on outdoor

temperature

Circuit Setting range Factory setting

I OFF / -29 ... +10 °C-15 °C

Limit of the outdoor temperature at which the reduced

temperature setting is switched off.

The grey

side of the

ECL Card

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Danfoss ECL Comfort 300 - C66 Operating instructions

Danfoss ECL Comfort 300 - C66 Operating instructions

Danfoss ECL Comfort 300 - C66 Operating instructions

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