Truma Combi D - Page 37

34020-01190 - 01 - 03/2022
Combi D Installation
37EN
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Fig. 31
2.8.2 Connecting the Combi D to the water
system
Installation with flexible hoses (Ø 10 mm)
The TB elbow fittings (Fig. 32-3) and (Fig. 32-6) and the
safety / drain valve (Fig. 30-5) have a Ø 10mm connec-
tion. All hose connections must be secured with hose
clamps (including the cold water connection).
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2
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Fig. 32
Installation with fixed duct routing (Ø 12 mm)
The JG elbow fittings (Fig. 33-3) and (Fig. 33-6) and the
safety / drain valve (Fig. 30-5) have a Ø 12 mm interior
connection. We recommend the use of John Guest
ducts, insertion sleeves and retaining rings. Appropriate
adapters are available for connecting ducts with differ-
ent diameters (not included in scope of delivery).
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Fig. 33
In order to ensure that the connected components will
work, the water pipes must be kept as short as possible
and be free of kinks and strain.

Install all water pipes sloping downward towards the
safety / drain valve. No claims may be made under
the warranty for damage caused by frost.
•
If a water supply is being installed in the vehicle, it
must be ensured that sufficient room is left between
the water lines and the heat source (e.g. heater,
warm air duct).
a
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4
Fig. 34
A water pipe (Fig. 34-4) may only be installed on the
warm air duct (Fig. 34-3) at a distance of 2 m from the
heater. The hose clip SC (part no.: 40712-01) (Fig. 34-2)
can be used from this distance. With parallel routing
(e.g. through a wall) a spacer (e.g. insulation) must be
fitted in order to avoid contact.

Due to the risk of frost, make sure that the cold wa-
ter supply does not come into contact with thermal
bridges (e.g. the external wall).

Connect the cold water supply (Fig. 37-4) to the
safety / drain valve (Fig. 37-1).

To ensure that all the water is drained and that the
water hoses on the appliance do not leak, always
use the supplied elbow fittings (Fig. 32-3) and
(Fig. 32-6) or (Fig. 33-3) and (Fig. 33-6).

Install the water pipe (Fig. 37-3) for the cold water
supply between the safety / drain valve and the inlet
on the water container.

Install the water pipe (Fig. 32-4) or (Fig. 33-4)
for hot water from the elbow connection valve
(Fig. 35-1 or 2) to the consumption points.

Attach the elbow connection valve to the top con-
nection of the heater (hot water discharge) and the
elbow fitting (Fig. 32-6) or (Fig. 33-6) to the bottom
connection (cold water supply) of the heater as far
as it goes. Pull in the opposite direction to ensure
that the elbow fittings are securely attached.