4
Always observe the opera-
ting instructions and
„Important operating
notes” prior to starting!
The vehicle owner is respon-
sible for the correct operation
of the appliance.
The installer or vehicle owner
must apply the yellow sticker
with the warning information,
which is enclosed with the
appliance, to a place in the
vehicle where it is clearly
visible to all users (e.g. on
the wardrobe door)!
Ask Truma to send you
stickers, if necessary.
Function description
The Truma-Aquatherm or
Aquatherm EL liquid gas hot
water heating systems heat
the heating water (60 %
water/40 % glycol) in gas
and/or electrical operational
mode to a constant intake
temperature of about 60° C.
The circulation pump (h) in-
stalled in the vehicle delivers
the pre-heated heating water
by means of the central hea-
ting system, and so heats the
interior of the vehicle. Once
the ambient temperature
which has been set on the
operating unit has been attai-
ned, the circulation pump will
switch itself off automatically.
The hot water central heating
system is adapted by the
vehicle manufacturer, as
required, to suit each vehicle
individually. A detailed ex-
planation of this cannot be
provided in these Operating
Instructions.
There is a wide range of ac-
cessories available (see bro-
chure) to supplement this
heating system.
To achieve the best possible
utilization of the heat, the
ambient air must be able to
circulate freely around the
convectors. Accordingly, ven-
tilation apertures in the sto-
wage boxes must not be co-
vered by covers, cushions,
carpets, etc.
Truma-Aquatherm operates
with a fan-supported burner,
which also ensures perfect
function when the vehicle is
on the move.
Note: In order to achieve
more rapid heating of the
heating water, the device can
be operated simultaneously
with gas and electricity.
Commissioning
Gas operation
a = On/Off slide switch
„Gas Operation“
b = On/Off slide switch
„Electrical Operation
230 V“
(Aquatherm EL only)
c = Rotary switch for
ambient temperature
(lit up by the green
„Operational“ monitor
light)
Caution: Never operate the
heating system without hea-
ting water.
1. Open the gas cylinder and
quick-closure valve in the gas
line.
2. Switch the heating system
on at the slide switch (a) on
the operating element. The
green monitor light beneath
the rotary switch (c) will light
up, indicating that the system
is in operation.
3. Set the desired ambient
temperature at the rotary
knob (c).
4. If the gas line is full of air,
it may take up to a minute
before gas is available for
burning. If the device swit-
ches to „Fault“ during this
period, the starting process is
to be repeated by switching
off and switching on again.
Red „Fault"“
Monitor Light
In the event of a fault, the
monitor light (c) on the ope-
rating element will light up
red. Reasons for this may be,
for example, gas shortage, air
in the gas line system, the
excessive temperature moni-
tor has responded, etc.
This situation can be released
by switching off and then
switching on again.
The system switching off
again after a short period of
operation may indicate that
there is air in the hot water
heating system. In this case,
the system must be bled (see
Maintenance).
In the event of any faults, you
should in principle contact
the Truma Service Depart-
ment (see page 31).
Switching off
Gas operation
Switch the heating off at the
slide switch „a“.
If the heating system has not
been used for some time,
shut off the quick-action
valve in the gas line and the
gas cylinder.
Taking into operation
Electrical operation
230 V (Aquatherm EL
only)
d = Power switch: 230 V,
500/ -1000/ -2000 W
e = Green monitor light
„Electrical operation
230 V“
Caution: Before switching
on, it is essential to make
sure that the fuses for the
power supply of the campsite
correspond to the power
stages (d) set (see Technical
Data).
Important: The power feed
cable for the caravan must be
unrolled completely from the
cable drum.
1. Set the switch (d) to the
desired power stage.
2. Switch the heating system
on at the slide switch (b). The
green monitor light (e) will
light up and indicate electri-
cal operating mode.
3. Set the desired ambient
temperature at the rotary
switch (c).
Note: The electrical heating
rod is fitted with a excess
temperature cut-out. In the
event of the system overhea-
ting (e.g. after operating
without heating water or in
the event of there being air in
the heating system), it may
be necessary to switch the
device off briefly in order to
reset the cut-out.
Switching off Electri-
cal operation, 230 V
Switch the heating system
off with the slide switch „b“.
Important
Operating notes
1. After the first heating ope-
ration, we recommend that
the hot water heating system
be bled once again (see
Maintenance), and the glycol
content of the heating water
be checked (max. 50 %).
No claims under guaran-
tee will be considered for
frost damage or function
faults due to air in the hot
water heating system.
Never operate the heating
system without heating
water. It is possible to run
the system very briefly with-
out water content in order to
check the electrical function.
2. If the chimney has been
placed close to a window
which is to be opened (or a
hatch), and particularly if
placed directly beneath it,
the window or hatch must re-
main closed during operation
(see Warning Notice).
3. The double waste gas pipe
must be checked regularly, in
particular after longer jour-
neys, for any leakage and to
ensure it is firmly connected,
as must the mounting of the
device and the chimney.
4. The waste gas chimney
must always be kept clear of
any dirt contamination (snow
slush, vegetation, etc.).
5. In the event of misfiring
(faulty ignition), have the
waste gas system checked
by an expert.
6. In the event of a fault with
the electronics control circuit
board, return it properly
packed and padded. No
claim under guarantee can
be considered if this re-
quirement is not respected.
Use only original control cir-
cuit boards as spare parts for
Truma-Aquatherm systems.
Operating
instructions
Truma-Aquatherm
Liquid Gas Hot Water
Heating System
(Special version
Aquatherm EL with
additional electrical
heating 230 V,
500/ -1000/ -2000 W)
