Starting The Combi Furnace; Inspections Before Each Use; Filling The Water Container - Truma Combi eco Operating Instructions Manual

Starting the Combi furnace

Danger of over-temperature and toxic ex-
haust gases!
• Use with LP gas (propane) only. Butane or
any mixtures containing more than 10 % of
butane must not be used.
• Keep the air inlet and exhaust gas outlet
free of obstructions. Do not lean any ob-
jects against the wall cowl on the RV or
place any objects within a range of 2 feet
(61 cm) of the wall cowl.
Danger of combustion and damage to
persons and the RV!
• Keep the area around the Combi furnace
free from combustible materials, gasoline,
and other flammable vapors or liquids.
• Switch the gas supply and the Combi fur-
nace off:
– if anything seems to be out of the ordinary.
– if you smell gas.
– if you move the RV.
– before entering a gas station.
– before entering a tunnel.
– before entering a ferry boat.

Inspections before each use

Check the Combi furnace for the following
points before each use. In case of damage, con-
tact an authorized Truma service provider and
do not operate the Combi furnace.
• Inspect the furnace (Fig. 1 – A), exhaust
venting system (Fig.1 – F), and wall cowl
(Fig.1 – F) for damage. Verify that connec-
tions are tight and fasteners are secure.
• The wall cowl (Fig. 1 – F) for drawing in com-
bustion air and emitting exhaust must be
free from obstructions such as slush, ice or
leaves. The furnace will not function properly
if the combustion-air inlet or exhaust tube is
partially or completely obstructed.
• The warm air outlets (Fig. 1 – H), the wall
outlet vents (Fig. 1 – I) and the openings
for the circulated air intake (Fig. 1 – D and
Fig. 2 – 11) must be free from obstructions
to ensure that the furnace functions properly.
Any obstructions might cause the furnace
to overheat. If this happens, the built-in tem-
perature limiter will interrupt the flow of gas
to the furnace. Once the furnace has cooled,
it will switch on again automatically.
• Access to adequate quantities of LP gas
(fuel inlet pressure 11 – 13 in. wc
(27.4 – 32.4 mbar)) and 12 V power must be
available.
The Combi eco plus and Combi comfort plus
models
• Make sure that the supply voltage's fuse
protection of the campground suffices for
operating the furnace in electric mode. The
furnace needs up to 1,700 W (14.2 A) in op-
erating mode 2. If the supply voltage's fuse
protection is not sufficient, the furnace can
be operated in operating mode 1 with up to
850 W (7.1 A).
Danger of damage to the power
cord due to overheating! If you use an exten-
sion cord on a cable drum to connect the
RV to the campground power system, make
sure the cord is fully extended.

Filling the water container

Damage to the water container!
If you want to connect your system to city wa-
ter, make sure that a suitable pressure reducer
is installed (Fig. 1 – K). The water container
must not be filled with a pressure exceeding
40.6 psi (2.8 bar).
1. Close the pressure relief/drain valve, if open
(refer to "Closing the Truma pressure relief/
drain valve" on page 10).
2. Close open bypass lines, if present.
3. Turn on the fresh water supply or switch on
the water pump.
4. Fill the plumbing system:
– Open all water-release points, e.g. cold and
hot water faucets, showers, toilets.
– Once water flows, the plumbing system is
ventilated and filled. Close all water-release
points.
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