Data sheet
ECL Comfort 300 / 301
230 V a.c. and 24 V a.c.
Application
The ECL Comfort 300 / 301 is an electronic
temperature controller which can be loaded
with selected applications by means of an ECL
Card.
The ECL Comfort 300 / 301 controller has triac
outputs for motorized valve control and relay
outputs for burner/pump/changeover valve
control.
It is possible to connect up to 6 Pt 1000
temperature sensors and optional plug-in
modules.
The enclosure is designed for wall and panel
mounting as well as for mounting on a DIN rail.
ECL Comfort 300 / 301 communicates by means
of the module ECA 71 via MODBUS to SCADA*
systems or the module ECA 82 via LON.
The ECL Comfort 300 / 301 communicates with
heat meters / flow meters by means of the
modules ECA 73 or ECA 84.
* Supervisory Control And Data Acquisition
ECL Cards and applications
The ECL Comfort 300 / 301 controller can be
loaded with a variety of different applications by
means of ECL Cards:
• ECL Comfort 300 with application card type C
• ECL Comfort 301 with application card type L
The ECL Card contains information about
application and factory settings. Each
application has its own card with corresponding
settings.
Special applications and/or settings are possible
on request.
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Data sheet
ECL Comfort 300 / 301
Following applications can be realized together with ECL Comfort 300:
Card
Code no.
Application type description
(English version)
Controller outputs
(without accessories)
C12
087B4900
Temperature control of district cooling based systems.
1 x 3-point, 1 x 2-point
C14
087B4824
Constant temperature control (heating/cooling) of ventilation systems.
2 x 3-point, 2 x 2-point
C17
087B4730
Advanced temperature control of DHW (domestic hot-water ) circuit with storage charging system.
1 x 3-point, 3 x 2-point
C25
087B4770
Weather compensated flow temperature control of boiler heated systems and constant temperature control
of DHW circuits.
3 x 2-point
C30
087B4889
Weather compensated flow temperature control of heating systems with wind compensation and sliding
return temperature limitation.
1 x 3-point, 1 x 2-point
C35
087B4761
Weather compensated flow temperature control of systems with fixed return temperature limitation.
Constant temperature control of secondarily connected DHW circuits with storage tank with built-in heating
coil. Optional ON/OFF control of the DHW circuit in connection with primarily connected storage tank with
built-in heating coil.
1 x 3-point, 2 x 2-point
C37
087B4758
Weather compensated flow temperature control of systems with sliding return temperature limitation.
Constant temperature control of secondarily connected DHW circuits with storage charging system or
storage tank with built-in heating coil. Optional ON/OFF control of the DHW circuit in connection with
primarily connected storage tank with built-in heating coil.
1 x 3-point, 3 x 2-point**)
C47
087B4821
Weather compensated flow temperature control of systems with sliding return temperature limitation.
Constant temperature control of DHW circuits with storage charging system.
2 x 3-point, 3 x 2-point**)
C55
087B4783
Boiler controller with constant temperature control of DHW circuits and weather compensated flow
temperature control of a mixed and an unmixed heating circuit.
1 x 3-point, 3 x 2-point**)
C60
087B4756
Weather compensated flow temperature control of heating systems with sliding return temperature
limitation for two independent heating circuits.
2 x 3-point, 2 x 2-point
C62
087B4808
Weather compensated flow temperature control of heating systems with sliding return temperature
limitation for two independent heating circuits.
2 x 3-point, 2 x 2-point
C66
087B4757
Weather compensated flow temperature control of heating systems with sliding return temperature
limitation. Constant temperature control of DHW circuits with flow system or storage tank with built-in
heating coil.
2 x 3-point, 2 x 2-point
C67
087B4820
Weather compensated flow temperature control of heating systems with sliding return temperature
limitation for two independent heating circuits. Constant temperature control of the secondarily connected
DHW circuits with storage tank with built-in heating coil. Optional ON/OFF control of DHW circuits in
connection with primarily connected storage tank with built-in heating coil.
2 x 3-point, 3 x 2-point**)
C75
087B4825
Multistage boiler controller (up to 8 boiler steps) with constant temperature control of DHW circuits and
weather compensated flow temperature control of a mixed and an unmixed heating circuit.
1 x 3-point, 4 x 2-point*)
*) Relay module ECA 80 is a necessary accessory.
**) Relay module ECA 80 is an optional accessory (depending on heating type).
Each of the abovementioned code nos. comprises one ECL Card, one manual and one quick guide.
Following applications can be realized together with ECL Comfort 301:
Card
Code no.
(language)
Application type description
Controller outputs
(without accessories)
L05
087B4870
(German)
Weather compensated flow temperature control for heat pump system (up to 2 stages), additional heating
circuit and temperature control for DHW circuit.
1 x 3-point, 3 x 2-point*)
L10
087B4874
(English)
Flow temperature control for keeping areas snow and ice free .
1 x 3-point, 2 x 2-point
L32
087B4854
(English)
Weather compensated flow temperature control in combined heating and cooling systems, typically floor
systems. In addition, dew point and slab temperatures are considered.
1 x 3-point, 5 x 2-point
L62
087B4887
(Russian)
Weather compensated flow temperature control of heating systems with sliding return temperature
limitation and twin-pump control.
2 x 3-point, 3 x 2-point*)
L66
087B4871
(Russian)
Weather compensated flow temperature control of heating systems with sliding return temperature
limitation and twin-pump control. Constant temperature control of DHW circuits with flow system and
twin-pump control.
2 x 3-point, 3 x 2-point*
L76
087B4878
(English)
Weather compensated flow temperature control of two independent heating systems with sliding return
temperature limitation. Constant temperature control of DHW circuits with flow switch control.
2 x 3-point, 3 x 2-point, 1 x
0-10 volt **)
*) Relay module ECA 80 is a necessary accessory.
**) ECL Comfort 301 with ECA 83, and ‘Temperature monitoring and alarm module’ ECA 86 is an optional accessory.
Each of the abovementioned code nos. comprises one ECL Card, one manual and one quick guide.
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Data sheet
ECL Comfort 300 / 301
Ordering
Controller and enclosure:
Type
Designation
Code no.
ECL Comfort 300
Universal hardware - 230 V a.c.
087B1130
ECL Comfort 300
Universal hardware - 24 V a.c.
087B1134
ECL Comfort 300 with ECA 83
Universal hardware - 230 V a.c. with 2 additional analog inputs (0-10 V) and 2
analog outputs (0-10 V)
087B1839
ECL Comfort 300 with ECA 88
Universal hardware - 230 V a.c. with 2 additional pulse connectors for heat
meter
087B1131
ECL Comfort 301
Universal hardware - 230 V a.c.
087B1834
ECL Comfort 301 with ECA 83
Universal hardware - 230 V a.c. with 2 additional analog inputs (0-10 V) and 2
analog outputs (0-10 V)
087B1836
ECL Comfort 301 with ECA 88
Universal hardware - 230 V a.c. with 2 additional pulse connectors for heat
meter
087B1835
ECL Comfort 200/300/301
Base part for wall mounting or DIN rail
087B1149
ECL Comfort
Connector set for panel mounting
087B1148
ECL Comfort
Mounting kit for DIN rail
087B1145
Pt 1000 temperature sensors:
Type
Designation
ESMT
Outdoor temperature sensor
Code No.
084N1012
ESM-10
Room temperature sensor
087B1164
ESM-11
Surface sensor
087B1165
ESMB-12
Universal sensor
087B1184
ESMC
Surface sensor incl. 2 m cable
087N0011
ESMU-100
Immersion sensor, 100 mm, copper
087B1180
ESMU-250
Immersion sensor, 250 mm, copper
087B1181
ESMU-100
Immersion sensor, 100 mm, stainless steel
087B1182
ESMU-250
Immersion sensor, 250 mm, stainless steel
087B1183
Type
Designation
Code no.
ECA 60
Room panel with sensor
087B1140
ECA 61
Remote control with 1 zone clock and sensor
087B1141
ECA 62
Room panel with sensors (°C and % RH)
087B1169
ECA 63
Remote control with sensors (°C and % RH)
087B1143
ECA 71
MODBUS communication module
087B1126
ECA 73
M-Bus combi module (4 x Pt 1000 temperature sensor inputs, 2 x relays (SPCO)
and M-Bus communication). External module (communicates via ECL Bus).
087B1128
ECA 80
Relay module - 2 x SPCO
087B1150
ECA 82
LON - communication module
087B1152
ECA 84
M-Bus - communication module
087B1155
ECA 86
Temperature monitoring and alarm module
087B1158
ECA 87
RS 232 remote control and data log
Modem cable (1.5 m) for ECA 87
PC cable (1.5 m) for ECA 87
087B1160
087B1171
087B1172
ECA 99
24 V transformer, Lübke (35 VA)
087B1156
ECA 9010
Override module (for controller time programs)
087B3081
Accessories:
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Data sheet
ECL Comfort 300 / 301
Application example
C66: Typical heating and DHW system (district heating)
C37: Typical heating and DHW system (district heating)
C47: Typical heating and DHW storage tank system (district heating)
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Data sheet
ECL Comfort 300 / 301
C55: Typical heating and DHW system (central heating)
Operation
The ECL Card
Controller mode
Manual operation (used only
at maintenance and service)
Automatic operation
Constant comfort
temperature
Constant reduced
temperature
Stand-by mode
Circuit indicator Circuit selector
Adjustment
Controller mode
Arrow buttons. Switch
between the lines of the ECL
Card.
Shift button. Switch between
temperatures, changeover
points etc.
Adjust temperatures and
values etc.
Circuit selector for switches
between circuit I / II.
Change of display
The display shows all status information about
the system. The time and the program is shown
in one of the displays which can be selected as a
favourite display. The display is also used for the
setting of control parameters.
Display example
C
1835
19
3
0
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Data sheet
ECL Comfort 300 / 301
Functions
ECL Comfort 300 / 301 has a custom-designed
display with backlight for monitoring and
setting.
The controller can be used as master or slave in
systems with master/slave controllers.
A remote control or room panel can be
connected to the system device bus.
Optional modules can be inserted into the
controller for communication via LON, MODBUS,
RS-232, or M-Bus (heat meter / flow meter).
A relay module can be added to extend the
performance of outputs if they are used in the
selected application.
General data
The Auto Tuning function for the automatic
setting of control parameters for instantaneous
DHW production is available with the ECL Card
C66.
However, Auto Tuning is only applicable 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.
Motor protection, which ensures stable control
and a long life of the motorized valve, is
available in ECL C Cards except C12, C14, C25
and C35.
Ambient temperature
0 - 50 °C
Storage temperature
-40 - + 70 °C
Mounting
On wall, in panel or on DIN rail
Sensor type
Pt 1000 (1000 ohm at 0 °C)
Grade of enclosure
IP 41 - DIN 40050
- marking
in accordance with the standards
EMC-Directive 89/336/EEC, 92/31/EEC, 93/68/EEC,
EN 61000-6-3 and EN 61000-6-1
Low Voltage Directive 73/23/EEC and 93/68/EEC
Supply voltage
230 V a.c. - 50 Hz
Voltage range
207 to 244 V a.c. (IEC 60038)
Power consumption
5 VA
Load on relay outputs
4(2) A - 230 V a.c.
Load on triac outputs
0.2 A - 230 V a.c.
Wiring - 230 V a.c.
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Data sheet
ECL Comfort 300 / 301
Wiring - 24 V a.c.
Supply voltage
24 V a.c. - 50 Hz
Voltage range
21.6 to 26.4 V a.c. (IEC 60038)
Power consumption
5 VA
Load on relay outputs
4(2) A - 24 V a.c.
Load on triac outputs
1 A - 24 V a.c.
Auxiliary relays (K1, K2 and K3) must be used in order to
separate the 230 V a.c. supply from the 24 V a.c. supply of
the controller.
Dimensions
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Data sheet
ECL Comfort 300 / 301
Cut-out for mounting
Mounting in a panel (connector set, code no.
087B1148):
The panel plate thickness A must not exceed 3
mm.
Mounting on a wall (socket code no. 087B1149):
The plate thickness B must not exceed 1 mm.
Additional documentation for ECL Comfort 300 / 301 is available on http://heating.danfoss.com/
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Produced by Danfoss A/S © 11/2008