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Fig. 29
The elbow fitting (28 – with aeration valve) is inserted into the
upper warm water connection and the second elbow fitting (27)
is inserted in the lower cold water connection of the heater
up to the stop. Pull in opposite direction in order to make sure
the elbow fittings are securely attached.
Create a pipe/hose connection (25) for the cold water supply
between the drain valve (24) and the hot water system intake.
Ensure that the cold water supply does not come into
contact with cold bridges (e.g. the outer wall) in order to
prevent freezing.
Route the hot water supply (26) from the elbow connec tion
with integrated vent valve (28) to the hot water appliances.
Push the venting hose, external diameter 11 mm (29), onto
the hose grommet of the venting valve (28a), and lay it to the
outside without any kinks. Ensure that the bend radius is not
smaller than 40 mm.
Cut off the aeration hose about 20 mm below the vehicle floor
at a 45° angle to the direction of travel (see figure 25).
Check all connections for water leaks:
– Repair leaks as needed.
– Repeat check for water leaks and take any necessary steps
to repair the leaks at all water connections.
Installing the room temperature sensor
When selecting the location, bear in mind that the room tem-
perature sensor must not be subjected to any direct radiant
heat. For optimum room temperature regulation, we recom-
mend that the room temperature sensor be fitted above the
entrance door.
Fig. 30
Please ensure that the room temperature sensor is al-
ways attached to a vertical wall. There must be no ob-
structions preventing the room air from flowing around it.
Drill a hole 10 mm in diameter. Guide the connection cable
through the drill hole from behind and connect the cable end
to the sensor by means of an insulated connector plug (there
is no need to be concerned about polarity). Slide in the room
temperature sensor and lay the cable end with the two insu-
lated connector plugs to the electronic control unit (extend to
16
32
29
20 mm
45º
10 mm
a maximum overall length of 10 m using 2 x 0.5 mm² cable if
necessary).
The provided room temperature sensor must always be
connected, otherwise the heater will switch to fault.
28
Installing the control panel
The installation of the control panel is described in the instruc-
tions included with the control panel.
Electrical connections
27
Route connecting 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 connecting 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 under the connec-
tion 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 on the connec-
tion cables, make sure that the cables are not pulled out or
become pinched.
Fig. 31
40 = Input voltage +12 V (spade connector 6.3 mm)
41 = Input voltage ground (spade connector 6.3 mm)
42 = not used
43 = Device fuse: 10 A – slow – (T 10 A)
44 = Wire bridge (or window switch – accessory)
45 = not used
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
connection cables. This will prevent condensation water from
running down the connection cables and into the unit.
Fig. 32
The connecting cables and plugs must not be subjected to
strain. Bundle connecting cables (see figure 29) and secure
each one to housing using a cable binder in order to provide
strain relief.
open
39
40
42
44
46
12 V
41
43
45
48
47
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