Operating Instructions

5
Read the safety instructions and operating manual care-
fully before starting the unit.
Operating instructions can be viewed in offline mode
with a mobile device and the Truma App. Download the
operating instructions when you have a WiFi connection and
save them on your mobile device.
Before using for the first time, it is essential to flush
the entire water supply system with clean water. If the
heater is not being used, always drain the water if there is a
risk of frost. No warranty claims for frost damage will be
accepted.
Control panel
The control panel is described in a separate operating instruction.
Room temperature sensor
To measure the room temperature, an external room tempera-
ture sensor (2) 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.
2
Fig. 2
The temperature setting on the control panel depends on per-
sonal heating requirements and the design of the vehicle, and
must be determined individually.
P&T relief valve
(Pressure and temperature relief valve)
Risk of scalding injury from hot water and/or tamper-
ing with the P&T relief valve!
– Do not actuate the P&T relief valve as long as the
appliance is still hot.
– Do not place a plug or reducing coupling in the dis-
charge pipe (Fig. 3 - 16a) of the P&T relief valve.
– Do not operate the water heater without a
functioning P&T relief valve.
The P&T relief valve (16) is a safety component and must
not be removed for any reason other than replacement.
The P&T relief valve is not serviceable; if defective it must be
replaced (failure to reuse an old P&T relief valve). It must be
replaced by a certified service technician.
Tampering with the P&T relief valve will void the warranty.
16a
Fig. 3
Operating instructions
Function description
The Combi diesel heater is a warm-air heater with integrated
hot water system (10 litre volume). The burner is fan-assisted,
which ensures that operation is problem-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 is heated at the lowest burn-
er 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 hot
water system has been filled, the water is automatically
heated as well. The water temperature depends on the se-
lected operating mode and the heater output.
Fuel supply / quality
– The heater requires diesel fuel, as per the Australian Fuel
Standard (Automotive Diesel). Operation with any form of
biodiesel is not permitted.
– When operational, the fuel display in the fuel tank must not
be allowed to drop to the “low fuel” mark.
In the event that the vehicle fuel tank runs empty, the open-
ing of the fuel removal duct is roughly at the same height as
the surface of the fuel. In this state, and in particular when
the fuel in the vehicle fuel tank slops 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, lead-
ing to the formation of smoke and odours.