Room Temperature Sensor Installation; Fitting The Control Panels; Electrical Connections - Truma Combi (E) Instructions De Montage

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Room temperature sensor installation

When choosing a location, please note that the room tempera-
ture sensor must not be subjected to direct heat radiation.
In order to obtain optimum room temperature control, install
room temperature sensor over the entrance door.
Figure 19
Please ensure that the sensor is always attached to a
vertical wall. There must be a free flow of interior air
around the sensor.
Drill a hole with a diameter of 10 mm. Lead the connector
cable through the hole from the rear, and connect the end of
the cable to the sensor using an insulated connection plug
(no need to observe polarity). Slide in the room temperature
sensor and route the end of the cable with the two insulated
connection plug to the heater electronics (lengthen the cable
to a maximum total length of 10 m with 2 x 0.5 mm² cable if
necessary).
The provided room temperature sensor must always be
connected, otherwise the heater will switch to fault.

Fitting the control panels

Installation of the control panels is described in the installation
instructions provided with the control panel.

Electrical connections

Route connector cables in such a way that they cannot chafe.
Please also use leadthrough bushings or edge protection
profiles where there are sharp edges such as metal panel
leadthroughs. The connector cables must not be attached to
or come into contact with metal surfaces, the exhaust duct or
warm air ducts.
The electrical connections are located beneath the heater con-
nection cover (39). The cover can be removed by pressing and
simultaneously sliding it in the direction of the arrow. When
removing or installing the connection cover, ensure that the
connector cables are not pulled out or become pinched.
18
10 mm
39
40
12 V
41
Figure 20
40 = Input voltage +12 V (spade connector 6.3 mm)
41 = Input voltage earth (spade connector 6.3 mm)
42 = FrostControl heating element (accessory)
43 = Device fuse: 10 A (slow-acting) (T 10 A)
44 = Wire bridge (or window switch – accessory)
45 = Time switch ZUCB (accessory – only in combination
with analogue control panel)
46 = Room temperature sensor
47 = Control panel / diagnostic connector*
48 = Control panel / diagnostic connector*
* Alternative connections
All connections to the unit should be made with sagging con-
nector cables. This will prevent condensation water from run-
ning down the connector cables and into the unit.
Figure 21
The connector cables and plugs must not be subjected to
force. Bundle connector cables (see figure) and secure each
one to housing using a cable binder in order to provide strain
relief.
All cables must be securely attached and must not become
loose or disconnected due to vibration – risk of fire!
Figure 22
open
42
44
48
46
43
45
47

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