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