Operating Instructions; Control Panel; Room Thermostat; Frostcontrol - Truma Combi D 6 Mode D'emploi

Operating instructions

Always observe the operating instructions and "Impor-
tant operating notes" prior to starting! The vehicle owner
is responsible 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.
Before using for the first time, it is essential to flush the
entire water supply system through with clean water. If
the heater is not being used, always drain the water contents
if there is a risk of frost! There shall be no claims under
guarantee for damage caused by frost!
Materials in the device which come into contact with
water are suitable for use with drinking water (see
manufacturer declaration: www.truma.com – Manufacturer
Declaration).

Control panel

a
g, h
b
a = Rotary switch for room temperature (1 – 5)
b = green LED lit "Operation"
green LED blinking
"after-running" is active in order to reduce the unit's
temperature
c = Summer operation
(water temperature 40 °C or 60 °C)
d = Winter operation
(heating without water temperature monitoring
or with drained water system)
e = Winter operation
(heating with water temperature monitoring)
f = Rotary "Off" switch
g = yellow LED lit "Boiler heat-up phase"
yellow LED flashes "failure"
h = red LED lit, red LED blinking "failure"
The LEDs are visible only when the unit is switched on.

Room thermostat

To measure the room temperature, an external room tem-
perature sensor (i) is located in the vehicle. The location of the
sensor is determined individually by the vehicle manufacturer,
depending on the vehicle type; consult the operating instruc-
tions for your vehicle for further details.
i
i = Room temperature sensor
The thermostat setting on the control panel (1 – 5) must be
determined individually depending on the heating requirement
and the type of vehicle. For an average room temperature of
about 23 °C, we recommend a thermostat setting of about 4.
12
Combi
°
60
c
°
40
f
d
e
°
60

FrostControl

(safety/drain valve)
FrostControl is a currentless safety/drain valve. When there
is a danger of frost, it automatically drains the contents of
the boiler through a drainage muff. If excessive pressure is
present in the system, pressure will be automatically intermit-
tently equalized through the pressure relief valve.
n
m
k = rotary switch position "Operation"
m = push button position "Closed"
n = push button position "Drain"
o = drainage muff
(led outside through floor of vehicle)

Closing the drain valve

Check if the rotary switch is set to "Operation" (position k),
meaning that it is parallel to the water connection and
engaged.
Close the drain valve by activating the push button. The push
button must engage in position (m) "closed".
Only when the temperature around the drain valve is over
around 7 °C can it to be closed manually with the press button
("m" position) and the boiler filled.
Truma supplies a heating element (part no. 70070-01) as an
accessory, which is inserted into the FrostControl and fixed in
place with a retaining bracket. This heating element heats the
FrostControl to approx. 10 °C when the Combi is switched on.
This means that the boiler can be filled after a shorter time, ir-
respective of the temperature in the installation compartment.

Automatic opening of the drain valve

If the temperature around the drain valve is below about 3 °C,
it will open automatically and the push button will disengage
(outward movement) ("n" position). The water from the boiler
will be released through the drainage muff (o).

Manual opening of the drain valve

Turn the rotary switch by 180° until it engages, whereby the
push button moves out (position n). The water in the boiler
drains out through the drainage muff (o).
The FrostControl drainage muff (o) must be free of contamina-
tion (slush, ice, leaves, etc.) at all times so the water can drain
out easily! There shall be no claims under guarantee for
damage caused by frost!

Initial start-up

(or when the fuel tank has run empty)

Filling the fuel lines

The heater normally has to be started up several times to fill
the fuel lines if an automatic filling unit is not being used.
k
o