Danfoss FH-CWD Installation guide

Instruction
FH-CWD Thermostat

Instruction FH-CWD Thermostat

Index

1. Functional Overview ................................................ 3

2. Mounting ..................................................................... 3

3. Installation ................................................................... 4

4. General usage............................................................. 4

5. Choosing room temperature control or

both room and floor temperature control ....... 5

6. Maximum floor temperature protection .......... 6

7. Frost protection ......................................................... 7

8. Error messages ........................................................... 7

9. Technical Specifications .......................................... 8

10. Figures and illustrations ......................................... 12

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.

VI.CU.B2.02 Produced by Danfoss Floor Heating Hydronics 05.2011

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Instruction FH-CWD Thermostat

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

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.

Produced by Danfoss Floor Heating Hydronics 05.2011 VI.CU.B2.02

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Instruction FH-CWD Thermostat

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

4. General usage

Turn ON/OFF the Room Thermostat Fig. 1 

• Turn the thermostat on or off by pressing .

VI.CU.B2.02 Produced by Danfoss Floor Heating Hydronics 05.2011

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Instruction FH-CWD Thermostat

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 temperature
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
sensor, 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 room
temperature and maximum floor temperature limit.
Factory setting is 01.

Produced by Danfoss Floor Heating Hydronics 05.2011 VI.CU.B2.02

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