Danfoss GreenCon RC-C2 User manual

Installation Guide
GreenCon RC-C2/C4
Room thermostat

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Installation Guide GreenCon RC-C2/C4
GB
Danfoss Heating Solutions VIE2C32P
1. Installation Steps
User Guide can be downloaded from: heating.danfoss.com.
1. Installation must be done by an authorised
electrician.
2. The room thermostat should be installed at approx.
1.5 m above oor and where the eects of sunlight,
draught or other heat sources (eg. TV’s) are avoided,
see g. 1.
3. First of all, carefully remove the cover, see g. 2.
4. Connect the wire before mounting the back plate
to the wall box using the enclosed screws, see g 3.
Then mount the cover to the back plate, see g 4.
2. Wiring
1. Dimensions, see g. 5
2. Wiring diagram, see g. 6 to g.9
3. Follow the illustrations to complete the wiring:
1) Wiring for SPST on/o control
. RC-C4, see g. 6
. RC-C2, see g. 7
2) Wiring for SPDT on/o control
. RC-C4, see g. 8
. RC-C2, see g. 9

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Installation Guide GreenCon RC-C2/C4
GB
VIE2C32P Danfoss Heating Solutions
3. Error codes
Display Description
E1 Alarming for short circuit of
sensor
EE EEPROM chip error
Lo Indicating temperature lower
than 0°C
Hi Indicating temperature
higher than 50°C
4. Notes
1. Correct wiring is essential; using instrument to con-
rm L and N before wiring is recommended.
2. Don’t remove too much of the insulation cover from
the wire to avoid short circuit caused by the naked
wire touching the metal 86 size mounting wall box.
3. Don’t let the screw press or touch the wire when
using screw to x room thermostat in wall box. A
short-circuit risk exists if the wire insulation cover is
damaged by the screw, and if the naked wire con-
nects with the screw.
4. If walls must be painted, mount the room thermostat
after painting, to avoid dust or paint material pen-
etrating the room thermostat and thus damaging
the PCB.
5. The max load of relay is 3 A (resistive) or 1 A (induc-

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Installation Guide GreenCon RC-C2/C4
GB
Danfoss Heating Solutions VIE2C32P
tive). The relay will be damaged if the load exceeds
the limit.
6. Don’t cover the thermostat, for instance by hanging
towels directly in front of it.
7. The room thermostat should be connected to the
corresponding actuator and valve in individual room
temperature control.
5. Technical Specications
Feature Description
Approval CE Marking, EN60730
Ambient temperature 0 - 45 ° C
IP Class 30
Max. load, inductive <1 A
Max. load, resistive <3 A
Power consumption 2 W
Power supply 85-250 Vac, 50/60 Hz
Room temp. set range 5 - 35 ° C
Shell material ABS + PC

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Installation Guide GreenCon RC-C2/C4
GB
VIE2C32P Danfoss Heating Solutions
6. Interface
Symbols Description Symbols Description
Temperature
indication
Valve
Temperature
setting
Frost protec-
tion
Heating Eco mode
Cooling Keyboard lock
Ventilation Timer ON/OFF
Fan control 5/2 4 event
program
Clock Actual week-
day

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Installation Guide GreenCon RC-C2/C4
GB
Danfoss Heating Solutions VIE2C32P
7. Operation
1. Power On/O and Eco mode.
• When powered o, press power button on top of
GreenCon to turn on;
• When powered on, press power button for 2 sec-
onds to turn o thermostat;
• When powered on, short press power button to
enter ECO mode;
• In ECO mode, press” < ” or ” > ” for temperature
setting, short press power button to exit.
2. Mode selection
• Press “ M ” to change system working mode:
Cooling “ ”, heating “ ” or ventilation “ ”
3. Setting temperature
• Press “ <” to reduce temperature, press“ >” to raise
temperature. (0.5°C changed each press)
• During setting temperature,“ SET ”icon will be dis-
played, after setting nished, this icon disappears
and LCD shows actual temperature.
4. Fan speed selection
• Press “ ” to select (close) (Low),
(Med), (Hi), (Auto);
• In Auto mode, fan speed will change according to
the dierence between room temperature and set-
ting temperature, Low-speed when this dierence
exceed 1°C, Med-speed when exceed 2°C, Hi-speed
when exceed 3°C.
*In default setting, fan speed will be “Close”when

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Installation Guide GreenCon RC-C2/C4
GB
VIE2C32P Danfoss Heating Solutions
room temperature reaches setting temperature. See
parameter P11 in chapter 9 for more details.
5. Time setting and ON/OFF timer
• Time setting
Long press“ ” for 3 seconds till“hh”start ashing,
press “ <” or “ >” to adjust hour;
Short press “ ” , “mm” ash, press “ <” or “ >” to
adjust minute;
Short press “ ” , “week” ash, press “ <” or “ >” to
adjust weekday;
• Timer On/O setting
After nishing time setting, short press“ ” to
congure timer On/O function, press other button
or wait for 6 seconds to exit.
• Short press “ ” till “ON” start ashing;
Press“ <” or “ >”to adjust timer“ON” hour;
Press “ ” to conrm;
Press“ <” or “ >”to adjust timer“ON” minute;
Press “ ” to conrm;
• After setting timer “ON”, “ OFF” start ashing;
Press“ <” or “ >” to adjust timer “OFF” hour;
Press “ ” to conrm;
Press“ <” or “ >” to adjust timer “OFF” minute;
Press “ ” to conrm;
• Cancel ON/OFF timer
During above steps, adjust hour and minute to “--:--“
to cancel timer function; Or congure P02 to“02”in
parameter setting to disable timer function.
6. Keyboard lock

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Installation Guide GreenCon RC-C2/C4
GB
Danfoss Heating Solutions VIE2C32P
Press and hold“M”, within 6 seconds, short press“ >”
to lock keyboard, icon“ ”will be displayed on LCD,
repeat this to unlock.
7. Reset
During power o, press and hold both “M” and“ <”,
“ > ” for 10 seconds, thermostat will be reset and
restart.
8. Auto switch between heating and cooling
When auto switch between heating and cooling On,
heating and cooling is automatically controlled by
the parameters P16,P17 and P19. The temperature
is controlled by the set temperature and the dead
zone is decided via the parameters P16 for Normal
mode and P17 for ECO mode.
9. Floor/radiator for heating & fan coil for cool-
ing
If P18 is O
The fan is controlled by the Fan Speed Selection
If P18 is On
The fan is disabled, when heating is on. When
cooling,the fan is controlled by the Fan Speed
Selection
8. Programming
1. 5-2 day programming
To enable this function, please congure P01 to “02”
in parameter setting.
When this function is enabled, system automatically
changes setting temperature four times per day.

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Installation Guide GreenCon RC-C2/C4
GB
VIE2C32P Danfoss Heating Solutions
Both setting temperature and event time can be
modied.
Programming function allows users to dene tem-
perature setting for 4 time period during workdays
(Mon-Fri) and weekend (Sat-Sun)
2. Default set up
Starting time and temperature for each period
7:00 / 18 °C / 28°C
9:00 / 22 °C / 26°C
18:00 / 18 °C / 28°C
21:00 / 15 °C / 30°C
3. Programming of workday set up;
Long press“ ” for 5 seconds till“Mon.Tue.Wed.
Thu.Fri” icon displays;
Press “ <” or “ >” to adjust starting hour of rst event,
press “ ” to conrm;
Press “ <” or “ >” to adjust heating temperature dur
ing rst event, press“ ”to conrm;Press “ <” or “ >”
to adjust cooling temperature during rst event,
press “ ” to conrm;
Repeat above operation for next 3 events
4. Programming for weekend set up;
After nishing programming of work days,“Sat.Sun”
will appear on screen, repeat above steps to set start-
ing time and temperature on weekends.
From next event, GreenCon will automatically change
setting temperature according to this set up.