Danfoss LinkFT User manual

Danfoss Link™ FT
Floor Thermostat
Installation Guide
electricheating.danfoss.com

Installation Guide2
1 Introduction � � � � � � � � � � � � � � � � � � � � � 2
2 Placement of Danfoss Link™ FT � � � � � � � � � 4
2.1 Operation mode . . . . . . . . . . . . . . . . 4
2.2 Sensor combination. . . . . . . . . . . . . . 4
3 Installation � � � � � � � � � � � � � � � � � � � � � � 6
3.1 Conguration . . . . . . . . . . . . . . . . . . 7
4 Factory reset � � � � � � � � � � � � � � � � � � � � � 7
5 Technical specications � � � � � � � � � � � � � � 7
6 Warranty� � � � � � � � � � � � � � � � � � � � � � � � 9
7 Disposal instructions� � � � � � � � � � � � � � � � 9
1 Introduction
The Danfoss Link™ FT (Floor Thermostat) is a device for
switching the heating element ON/OFF.
In connection with a oor sensor it can also measure the
temperature in the oor (FTS).
Secondly you have the possibility to use the Danfoss Link™
FT as a on and o switch to other equipments manually or
by schedule.
Danfoss Link™ FT
Table of Contents

3Installation Guide
Installation scenario: Danfoss Link™ CC
Danfoss Link™ RS
Danfoss Link™ FT
ON/OFF
safety switch
LED
Push and hold
for 5 sec. to
install/connect
Danfoss Link™ FT

Installation Guide4
2 Placement of Danfoss Link™ FT
Installation and placement must be according to local
building regulations.
2�1 Operation mode
Danfoss Link™ FT supports two types of operation modes.
1. Heating regulation
1. On/OFF switching
When used in heating regulation mode you have to con-
sider the following advices for controlling the heating.
When used as simple ON/OFF mode do not connect oor
sensor.
2�2 Sensor combination
When installing the Danfoss Link™ FT you need to consider
the type of heating and thus which sensors should be used.
There are three options:
Danfoss Link™ FT

5Installation Guide
1. Comfort heating: Constant temperature on the oor
in bathrooms and other rooms where a comfortable
warm surface is required. Install the Floor sensor and
choose Floor regulation for the room when doing the
conguration.
2. Total heating: Control of room temperature in living
rooms etc. Install the oor sensor and a Danfoss Link™
RS. Choose Combined regulation when doing the
conguration on the Danfoss Link™ CC.
3. No oor sensor: A oor sensor is not present, and
cannot be installed. You must install a Danfoss Link™
RS. Choose Room regulation.
Be aware that temperature control is less accurate without
the oor sensor and that all Danfoss Link™ FTs in a room
need to have the same sensor conguration.
Danfoss recommends always installing a oor sensor.
Do not install oor heating system without a oor sensor
when the heating element is installed on or beneath wooden
surfaces and other surfaces sensitive to temperature!
Danfoss Link™ FT

Installation Guide6
3 Installation
1. To remove the front cover, gently press the release
tabs under the bottom of the thermostat with a screw-
driver. Then remove the front.
15
20
25
30
35
2. Connect the thermostat according to the connection
diagram.
DFT01
Sensor
N L NTC
N
LOAD
L
LOAD
(Optional)
Mains 220-240V
50-60 Hz
Max. Load
15 (1) A
IP31
-10T30
Danfoss Link™ FT

7Installation Guide
3�1 Conguration
See Step-by-Step guide in Danfoss Link™ CC instruction
manual.
Green LED ON Standby
Red LED ON Heating
Green LED fast ash Inclusion or link test
Red LED short ash Inclusion not OK, goes to not
included.
Linktest not OK, goes to
missing link
RED LED slow ash Sensor failure
4 Factory reset
Turn o power on the safety switch on the front. Hold the
install button in while pushing ON the safety switch and
keep the install button pressed until the LED gives a red
ash (approx. 5 sec.)
5 Technical specications
Operation voltage 220-240 V~ 50/60 Hz~
Standby power
consumption Max. 1 W
Danfoss Link™ FT

Installation Guide8
Relay:
• Resistive load
• Inductive load
230 V ~ 15 A / 3450 W
cos ϕ= 0.3 Max. 1 A
Sensing unit NTC 15 kOhm at 25°C
Sensing values:
• 0°C
• 20°C
• 50°C
42 kOhm
18 kOhm
6 kOhm
Regulation PWM
Ambient temperature -10° to +30°C
Sensor failure
monitoring
The thermostat has a built-
in monitoring circuit, which
will switch o the heating if
the sensor is disconnected
or short-circuited
Transmission frequency 868.42 MHz
Transmission range in
normal buildings Up to 30 m
Transmission power Max. 1 mW
IP class 31
Dimensions 85 mm × 85 mm × 21 mm
Danfoss Link™ FT

9Installation Guide
6 Warranty
7 Disposal instructions
Danfoss Link™ FT

Installation Guide10
Danfoss Link™ FT