Temperature Sensor; Mounting The External Temperature Sensor; Installing The Strap-On Sensor - Dimplex WI 10TU Instructions D'installation Et D'utilisation

WI 10TU - WI 22TU

7.4 Temperature sensor

The following temperature sensors are already installed or must
be installed additionally:
 External temperature sensor (R1) supplied (NTC-2)
 Return temperature heating circuit (R2) installed (NTC-10)
 Return temperature primary circuit (R24) installed (NTC-10)
 Flow temperature heating circuit (R9) installed (NTC-10)
 Flow temperature primary circuit (R6) installed (NTC-10)
7.4.1 Sensor characteristic curves
Temperature in °C -20 -15
NTC-2 in k 14.6 11.4
NTC-10 in k 67.7 53.4
15 20 25 30 35
2.9 2.4 2.0 1.7 1.4
14.9 12.1 10.0 8.4 7.0
The temperature sensors to be connected to the heat pump ma-
nager must correspond to the sensor characteristic curve illustra-
ted in Fig.7.1 on pag. 6. The only exception is the external tem-
perature sensor included in the scope of supply of the heat pump
(see Fig.7.2 on pag. 6)
Fig. 7.1: Sensor characteristic curve NTC 10
Fig. 7.2: Sensor characteristic curve, NTC-2 according to
DIN 44574 External temperature sensor
EN-6
-10 -5 0 5 10
8.9 7.1 5.6 4.5 3.7
42.3 33.9 27.3 22.1 18.0
40 45 50 55 60
1.1 1.0 0.8 0.7 0.6
5.9 5.0 4.2 3.6 3.1
452235.66.09 · FD 9506
7.4.2 Mounting the external
temperature sensor
The temperature sensor must be mounted in such a way that all
weather conditions are taken into consideration and the meas-
ured value is not falsified.
 Mount on the external wall on the north or north-west side
where possible
Do not install in a "sheltered position" (e.g. in a wall niche or

under a balcony)
 Not in the vicinity of windows, doors, exhaust air vents, ex-
ternal lighting or heat pumps
 Not to be exposed to direct sunlight at any time of year
Sensor lead: Max. length 40 m; min. core cross-section
0.75 mm²; external diameter of the cable 4-8 mm.

7.4.3 Installing the strap-on sensor

It is only necessary to mount the strap-on sensors if they are in-
cluded in the scope of supply of the heat pump but have not yet
been installed.
The strap-on sensors can be fitted as pipe-mounted sensors or
installed in the immersion sleeve of the compact manifold.
Mounting as a pipe-mounted sensor
 Remove paint, rust and scale from heating pipe.
 Coat the cleaned surface with heat transfer compound
(apply sparingly).
 Attach the sensor with a hose clip (tighten firmly, as loose
sensors can cause malfunctions) and thermally insulate.
7.4.4 Hydraulic distribution system
The compact manifold and the dual differential pressureless
manifold function as an interface between the heat pump, the
heating distribution system, the buffer tank and, in some cases,
even the hot water cylinder. A compact system is used to simplify
the installation process, so that a lot of different components do
not have to be installed individually. Further information can be
found in the relevant installation instructions.
Compact manifold
The return sensor can remain in the heat pump, or should be in-
stalled in the immersion sleeve. The remaining empty space be-
tween the sensor and the immersion sleeve must be filled com-
pletely with heat transfer compound.
Dual differential pressureless manifold
In order for the heating circuit pumps of the generator and
consumer circuits to supply the flow to the return sensor, this
must be installed in the immersion sleeve of the dual differential
pressureless manifold.
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