Intended Use; Function Description; Safety Instructions; Important Operating Notes - Truma Combi D4 CP plus ready Gebrauchsanweisung

Intended use

The Truma Combi D4 CP plus diesel heater is a warm-air heat-
er with integrated hot water boiler (10 litre volume). This unit
was designed for installation in motor homes and caravans.
Installation inside buses and vehicles (vehicle classes M2 and
M3) is not permitted.
The applicable regulations must be complied with when the
equipment is being installed in special vehicles and vehicles
for transporting hazardous goods.
Other forms of use are also possible after consultation with
Truma.
An additional altitude kit (part no. 34610-01) is required for
long periods of operation at altitudes of 1500 to 2750 m.

Function description

The Combi D4 CP plus ready diesel heater is a warm-air
heater with integrated hot water boiler (10 litre volume). The
burner is fan-assisted, which ensures that operation is prob-
lem-free, even when on the move.
In heating and hot water mode the heater can be used to
heat the room and heat water up at the same time. If only hot
water is required, select hot water mode.
– In hot water mode, the water contents are heated at the
lowest burner setting. Once the water temperature has
been reached, the burner switches off.
– In heating and hot water mode, the unit automatically
selects the required operating level according to the tem-
perature difference between the temperature set on the
control panel and the current room temperature. If the boil-
er has been filled, the water is automatically heated as well.
The water temperature depends on the selected operating
mode and the heater output.
At a temperature of approximately 3 °C at the automatic
FrostControl safety/drain valve, the valve will open and
drain the boiler.

Safety instructions

The unit may only be operated using appropriate Truma control
panels.
In the event of a leak in the heater or the exhaust duct:
– switch off heater.
– open windows and door,
– have the entire system inspected by an expert!
Repairs may only be carried out by an expert!
Guarantee claims, warranty claims and acceptance of liability
will be ruled out in the event of the following:
– modifications to the unit (including accessories),
– modifications to the exhaust duct and the cowl,
– failure to use original Truma parts as replacement parts and
accessories,
– failure to follow the installation and operating instructions.
It also becomes illegal to use the appliance, and in some
countries this also makes it illegal to use the vehicle.
During the initial start-up of a brand new appliance, small
quantities of fumes and a slight odour may briefly occur. It is
a good idea to heat the device up several times in summer
mode (60 °C) and ensure that the area is well ventilated.
The system must comply with the respective regulations of
the country in which it is used. National regulations and rules
must be followed.
10
Absolutely no objects (e.g. spray cans) or flammable liquids
are to be stored in the installation compartment or on
the heater unit, since they may be exposed to increased
temperature levels under certain conditions.
The exhaust system must be inspected by a qualified
technician at regular intervals, not exceeding 2 years.
No work must be carried out on the heater, the exhaust duct
or in the vicinity of the chimney while the unit is in operation.
Do not inhale exhaust fumes.
Before performing any work on the heater or the exhaust
duct, switch off the heater and allow all parts to cool
completely.
The heater must not be used during fuelling, or in enclosed
car parks, in garages, or on ferries.
Do not operate the heater anywhere where flammable va-
pours or dust can form, e.g. in the vicinity of a fuel, coal,
wood or cereal storage facility or similar.

Important operating notes

If the cowl has been placed near or directly beneath an open-
ing window, the device must be equipped with an automatic
shut-off device in order to prevent operation with the window
open.
The exhaust double duct (exhaust gas sound muffler and ex-
traction duct) must be inspected regularly, particularly follow-
ing long journeys, to check for any damage and to ensure that
the connection is sound; the same applies to the mounting of
the heater and the cowl.
The cowl and the combustion air infeed must be kept free of
dirt (e.g. slush, ice, leaves, etc.) at all times.
The warm air outlets and circulating / exhaust air intake open-
ings must be unobstructed in order to ensure that the heater
is not at risk of overheating. The built-in temperature limiter
blocks off the fuel supply when the heater becomes exces-
sively hot.
Even out of season, the heater should be operated once a
month for about 10 minutes.
During heater operation, do not allow the fuel display in
the fuel tank to drop to the "low fuel" mark.
If that the vehicle fuel tank runs empty, the opening of
the fuel removal duct is roughly at the same height as
the surface of the fuel. In this state, particularly when
the fuel in the vehicle fuel tank is slopping around due
to vehicle movement, a large amount of air is sucked in.
This leads to an irregular supply of fuel to the heater. The
heater burner is unable to maintain clean combustion
in this condition, leading to the formation of smoke and
odours.
A diesel heating system always requires more power than a
comparable gas heating system. If there is a requirement for
autarky of the same duration (service life without external
power supply), Truma recommends investigating the possibil-
ity of retrofitting a larger and / or second battery.