13
Always observe the operating instructions and “Impor-
tant operating notes” prior to starting! The digital / ana-
logue control panels are described in separate operating
instructions.
The vehicle owner is responsible for correct
operation of the appliance.
The installer or vehicle owner must apply the yellow sticker
with the warning information, which is enclosed with the ap-
pliance, 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!
Room thermostat
To measure the room temperature, an external room tempera-
ture sensor (2) is located in the vehicle. The position of the
sensor is determined by the vehicle manufacturer depending
on the vehicle model. More information can be found in the
operating instructions for your vehicle.
2
Fig. 2
The thermostat setting at the control panel depends on the
personal heating requirement and the design of the vehicle,
and must be individually determined.
Safety/drain valve
A. FrostControl
(Safety/drain valve with integral frost protection /
optional in UK version)
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 socket. If excessive pressure is
present in the system, pressure will be automatically intermit-
tently equalized through the pressure relief valve.
a
b
c
d
Fig. 3
a = Rotary switch position “On”
b = Push button position “Closed”
c = Push button position “Drain”
d = Drainage socket (led outside through floor of vehicle)
Opening the safety/drain valve
– Turn the rotary switch by 180° until it engages, whereby the
push button pops out (position c). The water from the boiler
will be released through the drainage socket (d).
The FrostControl drainage socket (d) must be free of contami-
nation (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!
Closing the safety/drain valve
– Check whether the rotary switch is set to “On” (position a),
i.e. parallel to the water connection and engaged.
– Close the safety/drain valve by pressing the push button.
The push button must engage in position (b) "closed".
Only when the temperature at the safety/drain valve is above
approx. 7 °C can it be closed manually with the push button
(position b) 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
Combi the FrostControl to approx. 10 °C when the Combi is
switched on. This means that the boiler can be filled after a
shorter time, irrespective of the temperature in the installation
compartment.
Automatic opening of the safety/drain valve
If the temperature at the drain valve is below about 3 °C, it
will open automatically and the push button pops out (posi-
tion c). The water from the boiler will be released through the
drainage socket (d).
B. Safety/drain valve
(Safety/drain valve without frost protection /
standard in UK version)
The safety/drain valve automatically equalises the pressure in
the event of overpressure in the system. When this occurs,
the water is drained to the outside in intermittent bursts via a
drainage socket.
This safety/drain valve does not protect the water
container from
frost damage.
c
b
a
d
Fig. 4
a = Lever in position "Operational – closed“
b = Lever in position "Operational – closed“
c = Lever in position "Drain"
d = Drainage socket (led outside through floor of vehicle)
Opening the safety/drain valve
– Move lever to position (c) - vertical. The water from the
boiler drains through the drainage socket (d).
The drainage socket (d) of the safety/drain valve must be free
of contamination (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!
Opening the safety/drain valve
– Move lever to position (a) or (b) - horizontal.
Operating instructions
