Danfoss C37 User manual

C37
C37
VI.7C.E6.02 2005.09
VI.7C.E6.02 2005.09
www.danfoss.com
User's Guide 
Installer's Guide 
www.danfoss.com
ECL Comfort
Installer's Guide
ECL Comfort
User's Guide
*087R8070*
*VI7CE602*
*087R8070*
*VI7CE602*
Mixing controller with ON / OFF
controlled DHW charging

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 Room temperature sensor, circuit I
S3 Flow temperature sensor, circuit I
S4 Return temperature sensor
S5 DHW tank temperature sensor, lower
S6 DHW tank temperature sensor, upper
P1 Circulation pump, heating, circuit I
P2 Primary charging pump, DHW, circuit II
P3 Charging / circulation pump, DHW, circuit II
M1 Motorized control valve, heating, circuit I
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 087B4758
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.
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
27 Cut-in and cut-out temperature at DHW charging
- lines 1-2, circuit II
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.7C.E6.02 Card C37 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 instruction. 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 C37 is very flexible. These are the basic
principles:
Heating:
Typically, the flow temperature is always adjusted according to
your requirements.
The flow temperature sensor (S3) is the most important sensor.
The desired flow temperature at S3 is 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 valve (M1) is opened gradually when the
flow temperature is lower than the desired flow temperature and
vice versa.
The return temperature (S4) 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. 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 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 S3 is increased in order to heat the DHW. DHW
heating can have priority, i.e. pump P2 is ON and 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 Indirectly connected system and secondarily
connected DHW storage charging system
System settings
Circuit Line Description Recomm.
setting
I 51 DHW charging pump /
changeover valve OFF
I 52 Closed valve / normal operation OFF
I 53 Desired flow temperature at
DHW charging OFF
I 90 P3 = DHW circulation pump OFF
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
10.2 Indirectly connected system and secondarily
connected DHW storage charging system
(DHW priority)
System settings
Circuit Line Description Recomm.
setting
I 51 DHW charging pump /
changeover valve ON
I 52 Closed valve / normal operation OFF
I 53 Desired flow temperature at
DHW charging OFF
I 90 P3 = DHW circulation pump OFF
P2/M2*
For the control of the actuator use either relay output P2 or triac
output M2, see section 12.
10.3 Indirectly connected system and secondarily
connected DHW storage tank with built-in
heating coil
System settings
Circuit Line Description Recomm.
setting
I 51 DHW charging pump /
changeover valve OFF
I 52 Closed valve / normal operation OFF
I 53 Desired flow temperature at
DHW charging OFF
I 90 P3 = DHW circulation pump ON
10b

Installation
10.4 Indirectly connected system and secondarily
connected DHW storage tank with built-in
heating coil (DHW priority)
System settings
Circuit Line Description Recomm.
setting
I 51 DHW charging pump /
changeover valve ON
I 52 Closed valve / normal operation OFF
I 53 Desired flow temperature at
DHW charging OFF
I 90 P3 = DHW circulation pump ON
P2/M2*
For the control of the actuator use either relay output P2 or triac
output M2, see section 12.
10.5 Indirectly connected system and primarily
connected DHW storage tank with built-in
heating coil
System settings
Circuit Line Description Recomm.
setting
I 51 DHW charging pump /
changeover valve ON
I 52 Closed valve / normal operation OFF
I 53 Desired flow temperature at
DHW charging ON
I 90 P3 = DHW circulation pump ON
P2/M2*
For the control of the actuator use either relay output P2 or triac
output M2, see section 12.
10c

Installation
The following heating systems are only applicable with relay
module ECA 80
10.6 Indirectly connected system and secondarily
connected DHW storage charging system
System settings
Circuit Line Description Recomm.
setting
I 51 DHW charging pump /
changeover valve OFF
I 52 Closed valve / normal operation OFF
I 53 Desired flow temperature at
DHW charging OFF
I 90 P3 = DHW circulation pump ON
10.7 Indirectly connected system and secondarily
connected DHW storage charging system
(DHW priority)
System settings
Circuit Line Description Recomm.
setting
I 51 DHW charging pump /
changeover valve ON
I 52 Closed valve / normal operation OFF
I 53 Desired flow temperature at
DHW charging OFF
I 90 P3 = DHW circulation pump ON
P2/M2*
For the control of the actuator use either relay output P2 or triac
output M2, see section 12.
10d

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
Optional
P2 / M2*
For the heating systems 2, 4, 5 and 7 it must be determined
whether the actuator is to be controlled by means of the
terminals 6 and 7 (M2) or the terminal 11, cf. section 10.
Terminals 6 and 7: Only control valves with 3-point control
Terminal 11: For change-over valves ON / OFF
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
Optional
This circuit diagram is only valid if Danfoss actuators are used
Establish these jumpers:
1-8-10-12-14
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.

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 0.2 A / 230 V a.c.
4 M1 Actuator - close
alt. thermo actuator 0.2 A / 230 V a.c.
5 M1 230 V a.c. voltage supply for
actuator M1 0.2 A / 230 V a.c.
6 M2 Actuator - open 0.2 A / 230 V a.c.
7 M2 Actuator - close 0.2 A / 230 V a.c.
8 M2 230 V a.c. voltage supply for
actuator M2
9 P1 Circulation pump for heating
circuit 4 (2) A / 230 V a.c.
10 Phase for pump relay R1
11 P2/
M2
DHW pump / changeover valve
/ ON/OFF valve 4 (2) A / 230 V a.c.
12 Phase for pump / valve output
R2
13 P3 Circulation pump ON/OFF 4 (2) A / 230 V a.c.
14 Phase pump relay R3
Wire cross section: 0.75 - 1.5 mm2
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 (R4) Alarm relay
28 (R5) Control of the DHW charging pump in heating
systems 6 and 7.
Relay module ECA 80 is only active when the outdoor
temperature sensor is connected.
12b

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 Room temperature sensor** ESM-10
19 and 16 S3 Flow temperature sensor ESM-11 / ESMC /
ESMU
20 and 16 S4 Return temperature
sensor
ESM-11 / ESMC /
ESMU
21 and 16 S5 DHW tank temperature
sensor, lower
ESMB / ESMU
22 and 16 S6 DHW tank temperature
sensor, upper***
ESMB / ESMU
* The system device bus / room panel / remote control is only active
when the outdoor temperature sensor is connected.
** Either room temperature sensor or room panel / remote control
*** If only one DHW tank temperature sensor is used, it must be connected
to terminal 22
Establish the jumper from 16 to common terminal.
Wire cross section for sensor connections:
Min. 0.4 mm2
Total cable length: Max. 125 m (all sensors incl. system device
bus)
Cable lengths of more than 125 m may cause noise sensibility
(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 only) (C14 = 21 only)
Closed switch: Closed switch:
Comfort temperature Setback temperature
Open switch: Open switch:
Scheduled operation 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.
Comfort Setback
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 type
Software version,
controller
Desired room temp.
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
11
ON
2
ON
09
2
04
23
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