5
If the flame goes out during operation, immediate re-igni-
tion takes place within the closing time of the safety pilot
( approx. 30 seconds).
If no flame occurs, the auto ignitor continues operating until
the control knob (a) is moved to “0”.
If the gas supply line is full of air, it may take up to two min-
utes before gas is available to burn. During this time the con-
trol knob must be held down until the flame is burning.
3. In order to achieve even and quick warm air distribution
and to minimise the surface temperatures at the warm air out-
let grille, we recommend operating the heater with the Truma
warm air system running.
Operation of the fan
5
4
3
2
1
A
O
M
b
a
Fig. 5
a = Control knob / dial for fan power (1 – 5)
b = Rotary switch / dial for operating modes
A Automatic
– The electronics control the required
fan power and limit the speed to
the set value.
0 OFF
– Switch off fan.
M Manual
– Set the required fan power.
Booster
level
– Set fan speed to the highest value
(for maximum air volume flow).
Lighting
The lighting (optional) for the control panels is activated
by a proximity switch. To do this, touch the middle of the
cover from above. This switches on the lighting for approx.
20 seconds.
Fig. 6
The sensor electronics of the lighting calibrate them-
selves whenever the 12 V supply voltage is applied. This
can take several seconds. Do not touch the cover during
calibration.
Room thermostat
An average room temperature of approx. 22 °C can be
achieved with a thermostat setting of approx.
3 without fan
operation
.
We recommend operation
with the fan
and a
thermostat setting of approx.
4
for comfortable warm air dis-
tribution and to reduce the amount of condensation on cold
surfaces.
The exact thermostat setting must be determined in accord-
ance with the design of the vehicle and the individual heating
requirement.
The thermostat sensor is located at the bottom of the
heater. Please note that cold draughts caused by refrig-
erator ventilation, door cracks etc. or deep pile carpets ad-
versely affect the thermostat. Sources of interference such as
this must be remedied, otherwise there is no guarantee of sat-
isfactory temperature control.
Switching off
Set the control knob of the heater to position “0”. (the auto
ignitor is switched off at the same time).
Switch off fan (move rotary switch to “0”).
If the unit is not going to be used for a long period of time,
close the quick-acting valve in the gas supply line and turn off
the gas cylinder.
Maintenance
Should problems occur, please contact the Truma
Service Centre or one of our authorised service partners
(see www.truma.com).
In spite of careful manufacturing, the heater may con-
tain sharp parts. Therefore, please always use protective
gloves during maintenance and cleaning work!
Please pay attention to the ESD regulations!
There is a risk that the electronics may be damaged due
to electrostatic charging. All repairs must be carried out by an
expert!
Cleaning (only when the unit is switched off!)
It is advisable to remove accumulated dust from the heat ex-
changer, the floor plate and the fan wheel of the Truma warm
air system at least once a year before the beginning of the
heating season. Carefully clean the fan wheel with a paint-
brush or small brush.
