Danfoss EFET 130 User manual

INSTRUCTION
Thermostat EFET 130, 131, and 132
Table of contents
1. Applications and functions........................................ 3
2. Installation instructions.. ........................................... 4
a. Installation of sensor for EFET 130, and 132.
b. Placement of EFET 130, 131, and 132.
c. Connection diagram for EFET 130, 131, and 132.
d. Trouble shooting.
3. Technical specifications.............................................. 10
4. Guarantee conditions and guarantee certificate.....11-12
088L0371 - 01.01 11-2003

NB! The installation must only be carried out by an
authorised electrician. A disconnection must be
incorporated in the fixed wiring to ensure all-pole
disconnection from the supply mains.
2

The EFET 130-series is a series of electronic
thermostats used for control of indoor heating.
The EFET 130 is used for control of floor heating
installations. The thermostat is equipped with a floor
sensor for control of the desired floor temperature.
The EFET 131 is used for control of room heating
installations. The thermostat is equipped with a built-in
sensor for control of the desired room temperature.
The EFET 132 is used for control of both floor heating
installations and room heating installations.
The thermostat is equipped with a built-in sensor for
control of the desired room temperature. In addition, the
thermostat is equipped with a floor sensor for control of the
desired floor temperature.
Furthermore with the temperature dial and front cover
removed, you can set the maximum floor temperature, be-
tween 20° and 50°C, by adjusting the sunken temperature
dial, located in the top right hand corner of the thermostat.
This is an important feature when having wooden floors.
1. Applications and functions
3

Away from doors and windows
(at least 50 cm)
110 cm
2. Installation instructions
2.a Installation of sensor for EFET 130, and 132.
The floor sensor should be mounted in a 16 mm installa-
tion pipe which is sealed at the end to prevent penetration
of concrete into the pipe. Minimum bending radius for the
pipe is 50 mm.
The sensor cable must
be placed in between
two strings of the
heating cable.
4
To avoid cracks
in the concrete
floor you must
ensure that the
floor is completely
hardened before the
heat is switched on.
2.b Placement of
EFET 130, 131,
and 132.
Thermostat

5
1) 2)
3)
Cut
d132
temperature
limiter
Release tab
Min. Max.

2.c Connection diagrams for EFET 130, 131, and 132.
1234
F
NTC
N
Maks 16A
NTC
devireg 130
5 - 45°C
6
F
N
12 34
Maks 16A
devireg 132
5 - 35°C
20°C
50°C
NTC
NTC
3
N
1
F
42
5 - 35°C
devireg 131
Maks 16A
Temperature limiter
EFET 130 EFET 131
EFET 132

2.d Trouble-shooting.
Control of functioning:
If the heat is not turned on by activating the thermostat,
check the residual current device (RCD) and safety devices
before contacting an authorized electrician.
Fault: No heat
General:
First of all, make sure that all cables, connected to the
thermostat, are properly installed – Making sure that each
wire connected to the thermostat, creates a solid contact to
the screw terminal located on the thermostat.
Mains voltage: (terminal 3 & 4)
Measure the live supply voltage at terminal 3 & 4. The
reading should be within specified range, according to the
technical specifications.
If not, check the main fuse.
7

Thermostat output: (terminal 1 & 2)
Measure the voltage at terminal 1 & 2, (activated thermostat,
red light). The reading should be the same as previously
measured at terminal 3 & 4.
If the reading is ok, continue to the next step, if not – replace
the thermostat.
Heating cable: (terminal 1 & 2)
Disconnect the heating cable from terminal 1 & 2 on the
thermostat.
Measure the resistance in the heating cable with an ohm
meter, it is now possible to calculate the installed wattage,
using the formula below:
External sensor input: NTC – only for EFET 130 and
EFET 132
Disconnect the external NTC sensor at the terminal NTC, on
the thermostat.
Connect an ohm meter to the NTC sensor, measuring the
ohm value.
P = = W (at 230 V~)
U2
R
2302
R
=
8

9
The measured value should be within the specified range
according to the technical specifications.
If not, replace the NTC sensor.
Fault: Constant heat
Floor sensor interrupt
If disconnection of the external sensor (NTC) occurs, the
thermostat will be constant on (activated thermostat – red
light).
Disconnect the external NTC sensor at the terminal NTC, on
the thermostat.
Connect an ohm meter to the NTC sensor, measuring the
ohm value.
The measured value should be within specified range
according to the technical specifications.
If not, replace the NTC sensor.
Relay constantly on
Measure the voltage at terminal 1 & 2, (non-activated ther-
mostat, no light or green light). There should be no voltage at
terminal 1 & 2. If voltage is measured replace the thermostat.

10
3. Technical specifications:
Operation voltage:
Power consumption:
Relays:
- Resistive load:
- Inductive load:
Sensing unit:
Sensing values:
- 0°C:
- 20°C:
- 50°C:
Hysteresis:
Temperature range:
- 130:
- 131:
- 132:
Ambient temperature:
Frost protection:
LED indicator:
- No light:
- Red light:
- Green light
IP class:
Dimensions:
230 VAC +10% / -20%, 50 Hz
Max. 5W
250V ~ 16A
1A (power factor 0.3)
NTC 15 kOhm at 25° C
42 kOhm
18 kOhm
6 kOhm
~ 0,2° C
(0) 5-45° C
(0) 5-35° C
(0) 5-35° C, for temperature limiter: 20-50° C
-10º to +50°C
5ºC
The system is off
The temperature set point is not reached.
The temperature set point is reached.
30
82 mm x 82 mm x 36 mm
Technical data