Cut off the venting hose about 20 mm below the vehicle floor
at a 45° angle relative to the direction of travel.
45º
20 mm
21
13
20
12
Fig. 11
Flexible hose installation
45º
20 mm
21
13
12
20
Ø 12 mm
Fig. 12
Rigid pipe installation
(e.g. John Guest System)
Manufacture a hose connection (22) for the cold water supply
between the drain valve (14) and the elbow fitting (13 – lower
tube) at the boiler.
Route hot water supply line (23) from elbow fitting with built-
in aeration valve (12 – upper tube) to hot water consumption
points.
If a water supply is being installed in the vehicle, it must
be ensured that sufficient room is left between the water
hoses and the heat source (e.g. heater, warm air duct).
SC hose clips (part no. 40712-01) are suitable for fastening
the hoses to walls or the floor. These hose clips also make it
possible to route water hoses on the heater’s warm air distri-
bution pipes to prevent freezing.
A water hose may only be routed at a distance of 1.5 m from
the heater at the warm air duct. The Truma SC hose clip can
be used for distances greater than this. With parallel routing
(e.g. through a wall) a spacer (e.g. insulation) must be fitted in
order to avoid contact.
Rigid duct installation using the John Guest
system
Truma can supply the water connections (12 + 13) and the
drain valve (14) with a diameter of 12 mm as accessories. In
this case it is advisable to always use John Guest pipes, inser-
tion sleeves and locking rings.
Suitable adapters (not included in scope of delivery) must be
used for connecting rigid pipelines with a different diameter.
Route all water lines so they slope downwards to the
drain valve. Otherwise there is a risk of frost damage
that is not covered by the warranty!
Installing the drain valve
Fit drain valve (14) in an easily accessible location in the vicin-
ity of the boiler. Drill hole with diameter of 18 mm and insert
the drainage socket with hose (15). Secure the drain valve in
place with 2 screws. Water removal can take place directly to
the outside in a splash-protected location (fit splash guards if
necessary).
Ø 18 mm
14
15
Figure 9
Water line routing
Connect cold water supply (16) to drain valve (14). The direc-
tion of flow is irrelevant.
14 16
13
12
22
20
23
Figure 10
Push elbow fitting without aeration valve (13) as far as poss-
ible onto the boiler’s cold water connection tube (lower tube),
and push the elbow fitting with built-in aeration valve (12) as
far as possible onto the boiler’s hot water connection tube
(upper tube). Pull in the opposite direction to check that the
elbow fittings are securely attached.
Slide venting hose with an outer diameter of 11 mm (20) onto
the hose nozzle of the aeration valve (21) and route to the out-
side free of kinks. Radius of arc must not be less than 40 mm.
11
