Operation Manual

15
9M
otorcaravan - 09-08 - DET-0033-07EN
Appliances
1
0
10.4.1 Models with waste gas vent on the right-hand side of the
vehicle
10.4.2 Truma Combi boiler
The boiler is integrated into the heater and is operated with gas (gas opera-
tion) or with gas and/or electricity (gas and 240 V electrical operation). The
boiler is switched on by turning the rotary switch (Fig. 174,2) on the operating
unit (Fig. 174). The type of energy is pre-selected (gas and 240 V electrical
operation) with the energy selector switch (Fig. 176).
In winter operation "Heater and boiler" (Fig. 174,3) the water is automatically
heated up when the heater is switched on. If the heater switches off after the
required room temperature has been reached, the boiler will continue to heat
up until the set water temperature has been reached.
In summer operation (Fig. 174,1) only the water in the boiler is heated up to
either 40 °C or 60 °C. The water is heated to 60 °C in approx. 25 minutes. The
yellow indicator lamp (Fig. 174,5) illuminates during the boiler heating-up
period.
The power supply for the appliance cannot be interrupted by means of the
12 V main switch. When there is a fault, the red indicator lamp (Fig. 174,4) on
the operating unit illuminates (see chapter 15).
Safety/drainage valve The boiler is equipped with a safety/drainage valve (Fig. 175). The safety/
drainage valve prevents water in the boiler from freezing, when there is frost
and the heater is not switched on.
If the awning is put up and the boiler is running in gas operation, exhaust
gases from the boiler can escape into the awning area. Danger of suffo-
cation! Make sure the area is sufficiently ventilated.
Fig. 174 Operating unit for heater/boiler
1 Summer operation water tempera-
ture 40 °C or 60 °C
2 Rotary switch
3 Winter operation "Heater and boiler"
4 Red indicator lamp "Fault"
5 Yellow indicator lamp "Boiler heating-
up phase"
When the vehicle is not used for a long period of time, open the safety/
drainage valve and empty the boiler.
At temperatures below 2 °C the safety/drainage valve opens automatically.
Before filling the boiler, switch on the heater and wait until the temperature
on the safety/drainage valve is above 6 °C. Only then can the safety/
drainage valve be closed once again.
The water pump and the water fittings are not protected against freezing by
the safety/drainage valve.
The drainage neck of the safety/drainage valve has to be free of dirt (e.g.
leaves, ice) at all times.