151I-Modell - 11/12 - Ausgabe 09/11 - 2096165 - BUE-0056-05EN
Appliances
9
When five air outlet nozzles are completely opened, less warm air escapes
through each nozzle. However, if only three air outlet nozzles are opened,
more warm air flows out of each nozzle.
9.2.3 Truma Combi hot-air heater
Depending on the equipment, different heaters are installed in the vehicles.
The heaters differ with regard to the energy type with which they can be oper-
ated.
Operating modes All heaters have two operating modes:
z Winter operation
z Summer operation
It is only possible to heat the vehicle in the "Winter" operating mode. With the
"Summer" operating mode only water in the boiler is heated. It is not possible
to heat the vehicle in this operating mode.
Selecting operating mode:
Set the operating mode using the rotary switch (Fig. 158,3).
The power supply of the heater cannot be interrupted by means of the 12 V
main switch.
Variant: Heater with gas
operation
The heater is operated exclusively with gas.
Winter operation The heater selects the necessary burner setting according to the required
room temperature. When the required room temperature is reached, the
burner is switched off. In "Heater and boiler" operating mode (Fig. 158,6)
water in the boiler is also heated. In the operating mode "Heater without boiler"
(Fig. 158,5) the heater can be operated with an empty boiler.
Switching on:
Open the regulator tap on the gas bottle and the gas isolator tap "Heater/
boiler".
Turn the temperature control knob (Fig. 158,1) on the operating unit to the
desired heating level.
Set rotary switch (Fig. 158,3) to winter operation "Heater without boiler"
(Fig. 158,5) or to winter operation "Heater and boiler" (Fig. 158,6).
Green indicator lamp (Fig. 158,7) is on.
Z When there is a danger of frost the heater is not in operation, empty the
heating system.
Fig. 158 Operating unit for heater/boiler
1 Temperature control knob
2 Summer operation water tempera-
ture 40 °C or 60 °C
3 Rotary switch
4Off
5 Winter operation "Heater without
boiler"
6 Winter operation "Heater and boiler"
7 Green indicator lamp "Heating opera-
tion"
8 Red indicator lamp "Fault"
9 Yellow indicator lamp "Boiler heating-
up phase"
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