Fuel Tank Removal Kit; Water Connection - Truma Combi D 6 Einbauanweisung

Permissible metering pump intake and pressure levels
a
b
Pressure level from fuel tank to metering
pump:
Intake level with depressurised fuel tank: b = max. 1000 mm
Intake level with fuel tank in which
negative pressure occurs during removal
(valve with 0.03 bar in tank cap):
Pressure level from metering pump
to heater:
Attaching the metering pump
Attach metering pump (27) to vehicle in a suitable location us-
ing bracket (28) and holder (29) (included in scope of delivery).
90°
Connect unit and metering pump to fuel pipe
Mark hole for leading through fuel pipe (in soundproofing
hose) and metering pump connecting cable on floor of vehicle
in a suitable location.
Before drilling, always check for underlying / concealed
cables, gas lines, frame sections and the like!
Then seal the edges of the openings in the floor of the vehicle
with underbody protection.
Route fuel line and metering pump connecting cable so that
they will not chafe. Please also use leadthrough bushings or
edge protection profiles in locations where sharp edges such
as metal panel leadthroughs are present.
Route pressure-side fuel line in provided soundproofing hose
made from cellular rubber.
Allowing the fuel lines to come into contact with vehicle
components or overtightening the cable binders may re-
sult in metering pump noise transmission (clicking).
18
c
a = max. 1500 mm
b = max. 400 mm
c = max. 2000 mm
28
27
29
Connect fuel line (in soundproofing hose) to unit and meter-
ing pump as shown in diagram. Fix the sound-proofing hose
together with the connection cable to the vehicle with hose
holders (part no. 34020-76000) or loosely with cable binders
(approx. every 50 cm)
35
33
34
27
37
30 = Fuel line connection to unit
31 = Fuel hose 90° elbow
32 = Fuel line, inner diameter 2 mm (pressure line)
33 = Cellular rubber soundproofing hose
34 = Fuel hose
35 = Clamps
36 = Metering pump connecting cable
37 = Suction line from vehicle fuel supply

Fuel tank removal kit

The metering pump is connected to the vehicle fuel supply
using a vehicle-specific fuel tank removal kit.
Fuel tank removal kits on request.

Water connection

For operating the water heater it is possible to use all pressure
pumps and submergible pumps up to 2.8 bar, also all mixing
taps with or without electrical switch.
If using immersion pumps, a non return valve (40 – not in-
cluded in delivery) must be installed between the pump and
the first branch. Observe the direction of flow when installing
the non return valve.
46
47
45
43
36
30
31
35
44
41 40
42
32