Danfoss FH-CWD User manual

Instruction
FH-CWD Thermostat

Produced by Danfoss Floor Heating Hydronics 05.2011

3
VI.CU.B2.2D
Produced by Danfoss Floor Heating Hydronics 05.2011
Instruction FH-CWD Thermostat
Instruction FH-CWD Thermostat 5
Инструкция для термостата FH-CWD 15
FH-CWD-Thermostat - Gebrauchsanweisung 25
Instructions thermostat FH-CWD 35
FH-CWD 温控器使用说明 45

4VI.CU.B2.2D Produced by Danfoss Floor Heating Hydronics 05.2011
Instruction FH-CWD Thermostat
Produced by Danfoss Floor Heating Hydronics 05.2011

Produced by Danfoss Floor Heating Hydronics 05.2011
5
VI.CU.B2.2D
Produced by Danfoss Floor Heating Hydronics 05.2011
Instruction FH-CWD Thermostat
1. Functional Overview ............................................ 6
2. Mounting .................................................................. 7
3. Installation ............................................................... 7
4. General usage ......................................................... 8
5. Choosing room temperature control or
both room and floor temperature control ... 8
6. Maximum floor temperature protection ...... 9
7. Frost protection...................................................... 10
8. Error messages ....................................................... 10
9. Technical Specifications ...................................... 11
10. Figures and illustrations ...................................... 55
Index
IMPORTANT!
Protect the thermostat from dirt, fluids, concrete and do NOT
insert any objects into it.
Do not cover the thermostat, for instance by hanging towels
directly in front of it.
Installation must be done by an authorized electrician.

6VI.CU.B2.2D Produced by Danfoss Floor Heating Hydronics 05.2011
Instruction FH-CWD Thermostat
Produced by Danfoss Floor Heating Hydronics 05.2011
1. Functional Overview
Front - fig. 1
 Push button
 Push button M
 Up/down selectors
Back - fig. 2
Screw hole for flush mounting 
Terminals for cable mounting 
Symbols in the display - fig. 3
Room Sensor
Floor Sensor
Temperature indication
Set Room temperature
Set Floor temperature
Floor heating – Active
Frost Protection – Active

Produced by Danfoss Floor Heating Hydronics 05.2011
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VI.CU.B2.2D
Produced by Danfoss Floor Heating Hydronics 05.2011
Instruction FH-CWD Thermostat
2. Mounting
! Wherever possible, the room thermostat should be
installed where the effects of sunlight, draught, and
other heaters (eg. TV’s), etc. are avoided.
3. Installation
Installing the Room Thermostat- fig. 5 and fig. 6
• Remove the connection cable between front and
back part
• Connect the thermostat correctly to mains supply
according to the Wiring Diagram - fig 6
• Mount the thermostat by using the enclosed
screws to the wall box
• Mount the front correctly.
Wiring Diagram – fig. 6
The product must be connected to the following leads:
• Term L: Phase (L) AC85-250V, 50/60 Hz
• Term NO: Valve (NO)
• Term NC: Valve (NC)
• Term N: Neutral (N)
• Term 2: Empty
• Terminal S2: Floor sensor
• Terminal S1: Floor sensor

8VI.CU.B2.2D Produced by Danfoss Floor Heating Hydronics 05.2011
Instruction FH-CWD Thermostat
Produced by Danfoss Floor Heating Hydronics 05.2011
4. General usage
Turn ON/OFF the Room Thermostat Fig. 1 
• Turn the thermostat on or off by pressing .
Display of Room Temperatures - fig. 3
• The actual room temperature is shown in the
display as default .
Setting of Room Temperature Fig. 1 
• Press the to set the desired room tempera-
ture value, is shown in the display.
• When releasing the selector the display
returns to actual room temperature .
5. Choosing room temperature
control or both room and floor
temperature control
Turn OFF the thermostat by pressing Fig. 1 .
• Press and hold Fig. 1  for 10 seconds. The
display will show 01.
• Press Fig. 1  to adjust desired controltype.
01=room temperature control, only with room sen-
sor, no floor sensor, check and setting only room
temperature.
02=both room and floor temperature control, with
room sensor and floor sensor, check and setting

Produced by Danfoss Floor Heating Hydronics 05.2011
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VI.CU.B2.2D
Produced by Danfoss Floor Heating Hydronics 05.2011
Instruction FH-CWD Thermostat
room temperature and maximum floor temperature
limit. Factory setting is 01.
6. Maximum floor temperature
protection
The function allows you to set a maximum allow-
able floor temperature if for instance you want
to protect real wood floors from damage due to
excess heat. For specific maximum floor tempera-
tures please refer to recommendations from floor
suppliers.
Displaying the Floor Temperature
The function allows you to check the internal tem-
perature of the floor. Works only with floor sensor.
Turn ON the thermostat by pressing Fig. 1 .
• Press M Fig. 1  shortly and will flash in the
display.
• The actual floor temperature is shown in the display.
Setting maximum floor temperature
Turn OFF the thermostat by pressing Fig. 1 
• Press M Fig. 1  for 5 seconds until the display
shows .
• Release M Fig.1 , and the display shows .

10 VI.CU.B2.2D Produced by Danfoss Floor Heating Hydronics 05.2011
Instruction FH-CWD Thermostat
Produced by Danfoss Floor Heating Hydronics 05.2011
• Press or Fig. 1 to set the desired maximum
floor temperature limit.
• Wait 5 seconds for the thermostat to exit SET
mode and power off.
7. Frost protection
Using the Frost Protection Mode instead of turn-
ing the thermostat OFF completely may protect
against damages due to low temperatures. The
room temperature will be maintained around 5 °C.
• Turn OFF the thermostat by pressing Fig. 1 .
• Press M Fig.1  for 3 seconds and release.
• Select 01 (00= disabled).
If the room temperature is lower than 5 °C the
heating will be turned ON and will be shown
in the display.
If the room temperature is higher than 7 °C the
heating is turned OFF.
Factory setting is 00.
8. Error messages
E1 will be displayed when room sensor failure.
E2 will be displayed when floor sensor failure. E2
will be read when pressing M Fig. 1  to check
floor temperature.
Any case, all relay output would be turned off.