Danfoss ECL Comfort 110 User manual

Operating Guide
ECL Comfort 110, application 116
(valid as of software version 1.08)
English version
www.danfoss.com

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How to navigate?
Safety Note
To avoid injury of persons and damages to the device, it is absolutely necessary to read and
observe these instructions carefully. The warning sign is used to emphasize special conditions
that should be taken into consideration.
This symbol indicates that this particular piece of information should be read with
special attention.
Adjust temperatures and values.
Switch between menu lines.
Select / return.
2 sec.
Return to daily user menu.
What do the symbols mean?
Mode COMFORT<
Temp. 48@½1000
The desired flow temperature is influenced by for example return temperature.
The actuator closes the control valve.
The actuator opens the control valve.
The actuator does not activate the valve.
The pump is ON.
The pump is OFF.
The controller is in setback mode.
The controller is in pre-setback mode (the symbol is blinking).
The controller is in comfort mode.
The controller is in pre-comfort mode (the symbol is blinking).

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Table of contents
Table of contents Line Page
Constant temperature control of domestic hot-water systems (DHW)
User guide, installation & maintenance
Introduction 5
Settings overview 6
Daily use 7
Temperatures 7
Select control mode 8
Set your personal schedule 8
Maintenance 10
Date - time 1000 10
Flow temp. (flow temperature control) 2000 10
Temp. min. (flow temp. limit, min.) 2177 10
Temp. max. (flow temp. limit, max.) 2178 10
Return T limit (return temp. limitation) 4000 11
Limit (return temp. limitation) 4030 11
Gain - max. (return temp. limitation - max. influence) 4035 12
Gain - min. (return temp. limitation - min. influence) 4036 12
Intgr. time (time constant for return temp. limitation) 4037 13
Control param. (control parameters) 6000 14
Auto tuning 6173 14
Motor prot. (motor protection) 6174 15
Xp1 at 65 C (proportional band) 6184 15
Xp2 at 90 C (proportional band) 6129 15
Tn (integration time constant) 6185 16
Tn - idle (integration time constant) 6096 16
M1 run (running time of the motorized control valve) 6186 16
Nz (neutral zone) 6187 17
Open time 6094 18
Close time 6095 18
S2 idle 6097 18

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Table of contents
Application 7000 19
P1 exercise (pump exercise) 7022 19
M1 exercise (valve exercise) 7023 19
P1 frost T (frost protection) 7077 19
P1 heat T (heat demand) 7078 19
Standby T (standby temperature) 7093 20
Ext. (external override) 7141 20
Min. on time (min. activation time gear motor) 7189 20
Daylight (daylight saving time changeover) 7198 21
ECL address (master / slave address) 7199 21
Type 7600 22
Service 8000 23
Code no. 8300 23
Ver. (version no.) 8301 23
Backlight (display brightness) 8310 23
Contrast (display contrast) 8311 23
Language 8315 24
MOD address (MODBUS address) 8320 24
Installation 25
Mounting the ECL Comfort controller 25
Electrical connections - 230 V a.c. - in general 26
Electrical connections - 24 V a.c. - in general 27
Connecting the temperature sensors and the ECL BUS 28
Connecting the flow switch (FS) 28
How to identify your system type 29
Adapting the ECL Comfort 110 controller 31
Manual control 32
Placing the temperature sensors 33
Checklist, electrical connections 34
Frequently asked questions 35
Definitions 36

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Introduction
How to use this guide
The instructions is divided into six parts:
• Introduction
• Settings overview
• Daily use
• Maintenance
• Installation
• Check
Basic principles of application 116 for ECL Comfort 110
If the measured flow (DHW) temperature (S3) is lower than the desired DHW
temperature, the motorized control valve (M1) is opened gradually 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, i.e. the return temperature will
decrease.
The circulation pump, P1, is ON when the desired flow temperature is higher than 20 °C
(factory setting) or the actual flow temperature (S3) is below 10 °C (factory setting).
Furthermore, a flow switch (FS) signal (terminals 11 + 12) can be applied in order to heat
the DHW separately on DHW demand (DHW tapping, DHW draw-off).
If a supply temperature sensor S2 is connected, the proportional band Xp is adapted
to the actual temperature in order to avoid control instability. In addition, an idle
temperature for the supply temperature can be maintained to minimize the heat-up
time for the DHW.
° C
S3
FS Time
°C (degrees Celsius) is an absolute temperature whereas K (Kelvin) is a relative temperature.

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Settings overview
Line Page Factory
setting
Your
setting
Temp. min. (flow temp. limit, min.) 2177 10
Temp. max. (flow temp. limit, max.) 2178 10
Limit (return temp. limitation) 4030 11
Gain - max. (return temp. limitation - max. influence) 4035 12
Gain - min. (return temp. limitation - min. influence) 4036 12
Intgr. time (time constant for return temp. limitation) 4037 13
Auto tuning 6173 14
Motor prot. (motor protection) 6174 15
Xp1 at 65 C (proportional band) 6184 15
Xp2 at 90 C (proportional band) 6129 15
Tn (integration time constant) 6185 16
Tn - idle (integration time constant) 6096 16
M1 run (running time of the motorized control valve) 6186 16
Nz (neutral zone) 6187 17
Open time 6094 18
Close time 6095 18
S2 idle 6097 18
P1 exercise (pump exercise) 7022 19
M1 exercise (valve exercise) 7023 19
P1 frost T (frost protection) 7077 19
P1 heat T (heat demand) 7078 19
Standby T (standby temperature) 7093 20
Ext. (external override) 7141 20
Min. on time (min. activation time gear motor) 7189 20
Daylight (daylight saving time changeover) 7198 21
ECL address (master / slave address) 7199 21
Type 7600 22
Code no. 8300 23
Ver. (version no.) 8301 23
Backlight (display brightness) 8310 23
Contrast (display contrast) 8311 23
Language 8315 24
MOD address (MODBUS address) 8320 24
10 °C
90 °C
50 °C
0.0
0.0
25 s
OFF
OFF
50 K
120 K
20 s
120 s
15 s
3 K
OFF
2.0 s
OFF
OFF
OFF
10 °C
20 °C
10 °C
OFF
3
ON
15
116
XXXX
XXXX
16
10
English
5
!

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Daily use
Temperatures
Push any button to switch on the backlight.
Mode COMFORT
Temp. 48@½
Setting the desired DHW temperature
Change the desired temperature.
Temperature overview
2 sec.
Push the button to see the sensor (S3, S4, S2) temperatures, calculated Xp and flow switch
(FS) status.
Change between the temperature displays:
S3:
Actual flow temperature
Desired flow temperature
S3 des. T 48@
S3 act. T 49@
S4:
Actual return temperature
Desired return temperature limitation
S4 lim. T 50@
S4 act. T 24@
Calculated Xp, based on S2 temperature
Actual supply temperature
S2 act. T 78@
Xp actual 87K
Flow switch (FS) not activated = OFF
Flow switch (FS) activated = ON
FS status OFF
Push to exit ‘Temperature overview’.
If the temperature value is displayed as
"- -" the sensor in question is not connected.
"- - -" the sensor is short-circuited.

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Daily use
Select control mode
During scheduled operation (AUTO), the symbols will show you the control mode.
Wednesday
Mode COMFORT<
Change the mode (AUTO, COMFORT, SETBACK, or STANDBY).
Set your personal schedule
It is only possible to set the personal schedules if the ECL Comfort 110 controller has a built-in
ECA 110 timer program.
04-01-12 8:32
Wednesday <
This display will show the current day and time.
Choose the day for which you wish to change the settings.
Today’s schedule
The first display will show you the start of the first comfort period (‘Start1’). See or change
the start of this period.
The first bar will blink.
Wed ]]]][!]]]!!]
Start1 09:00
See or change the end (‘Stop1’) of the first comfort period.

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Daily use
The next bar will blink.
Wed ]]]][!{]]!!]
Stop1 12:00
See or change the start (‘Start2’) of the next comfort period.
Wed ]]]][!{]]!!]
Start2 18:00
See or change the next start / stop periods, if necessary.
Wed ]]]][!{]]!!]
Stop2 22:00
฀฀
The schedule has always two comfort periods a day. The start and stop times can be set in
half-hourly intervals (30 min.).
To arrange only one comfort period on a day: Set Start2 and Stop2 times to the same time
value.

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Maintenance
2 sec.
Enter the maintenance menus.
Date - time 1000
It is only necessary to set the correct date and time in connection with the first use of the
ECL Comfort 110 controller or after a power break of more than 36 hours (see the chapter on
Adapting the ECL Comfort 110 controller).
Flow temp. (flow temperature control) 2000
Temp. min. (flow temp. limit, min.) 2177
Setting range Factory setting
-20 ... 110 °C 10 °C
Set the allowed min. flow temperature for your system. Adjust the factory setting, if
required.
Temp. max. (flow temp. limit, max.) 2178
Setting range Factory setting
10 ... 150 °C 90 °C
Set the allowed max. flow temperature for your system. Adjust the factory setting, if
required.
The setting for ‘Temp. max.’ has higher priority than ‘Temp. min.’.