FITTED EQUIPMENT
109
double duct must be checked regularly,
particularly at the end of long trips. Also check
the mounting of the appliance and the cowl.
Following a blow-back (misfire) always have
the exhaust gas system checked by an expert!
Always keep the cowl for the exhaust duct and
combustion air intake free of contamination
(slush, ice, leaves etc.). A number of hot air
outlets and the recirculated air intake openings
must be free so that the unit does not
overheat. The integrated temperature limiter
blocks the gas supply when the unit becomes
too hot.
Operating Instructions
Always observe the operating instructions and
“Important operating notes” prior to starting!
The vehicle owner is responsible for the correct
operation of the appliance. 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, a room
temperature sensor is fitted to the furniture.
The exact location is determined by the layout
of the vehicle.
Taking into operation
Heating is possible without restrictions with
gas, electrical and mixed operation, with or
without water. Check to make sure the cowl is
unobstructed. Be sure to remove any covers
that may be present.
For operating on gas turn on gas cylinder and
open the shut off valve at the manifold. For
operating on electric operate the water heater
switch on the power supply unit. See page 71.
Filling the water heater
Switch on power for water pump (main or
pump switch) to prime the water system. Open
hot water taps in kitchen and bathroom, (set
preselecting mixing taps or single-lever fittings
to “hot”). Leave the fittings open for as long as
it takes for the boiler to displace the air and fill
up, and the water to flow without interruption.
If just the cold water system is being operated,
without using the water heater, the heater tank
also fills up with water. To avoid frost damage,
the boiler must be drained through the drain
valve, even if the boiler was not operated.
When connecting to a central water supply
(rural or city mains), a pressure reduction valve
must always be installed to prevent pressures
above 2.8 bar from developing in the water
heater.
Draining the water heater
Switch off power to water pump (main or
pump switch). Open hot water taps in kitchen
and bathroom. In order to check the water that
is flowing out, place an appropriate container
(capacity 10 litres) beneath the drain valve.
Open the drain valve which is situated next to
the boiler by lifting the yellow handle into the
vertical position.
Check whether all of the water in the boiler (10
itres) has been drained into the container via
the drain valve.
There shall be no claims under guarantee
for damage caused by frost!
Maintenance
Only original Truma parts may be used for
maintenance and repair work! Materials in the
device which come into contact with water
are suitable for use with drinking water (see
manufacturer‘s declaration: www.truma.com /
downloads / manufacturer‘s declaration).
Bio-film, deposits and limescale must be
removed using chemicals to protect the
unit from infestation by microorganisms.
Only chloride-free products must be used
in order to prevent damage to the unit. The
effectiveness of the use of chemicals to
combat microorganisms in the unit can be
increased by heating the water in the boiler to
70 °C at regular intervals. The unit must stay
switched on for at least 30 minutes and no
warm water may be removed. The residual
heat in the heat exchanger will heat the water
up to 70 °C.
