Operation Manual

16
5M
otorcaravan - 09-08 - DET-0033-07EN
Appliances
1
0
10.4.4 Webasto Dual Top boiler
The boiler is integrated in the heater and is powered with diesel fuel from the
fuel tank.
In winter operation "Heater and boiler" (Fig. 180,4) the water is heated up as
well 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 water is heated.
In summer operation (Fig. 180,1) only the water in the boiler is heated up to
either 40 °C or 70 °C.
The power supply for the appliance cannot be interrupted by means of the
12 V main switch. In the case of faults, the indicator lamp "Operation/fault"
(Fig. 180,5) flashes alternately green and red.
Safety/drainage valve The boiler is equipped with a safety/drainage valve. The safety/drainage valve
prevents water in the boiler from freezing, when there is frost and the heater
is not switched on.
Winter operation In the "Heater and boiler" switch setting (Fig. 180,4) in winter operation, the
boiler is already switched on.
Summer operation In summer operation the water can be heated up to 40 °C or 70 °C.
Take the device out of operation by removing the fuse and contact cus-
tomer service if one of the following events occurs: Long lasting, strong
development of smoke; unusual combustion noises; smell of fuel; con-
tinuous fault shut-down with error message (blink code).
Fig. 180 Operating unit for heater/boiler
1 Summer operation water tempera-
ture 40 °C or 70 °C
2 Winter operation "Heater without
boiler"
3 Indicator lamp "No water"
4 Winter operation "Heater and boiler"
5 Indicator lamp "Operation/fault"
(green/red)
6 Control knob "Temperature"
7 Frost protection
8 Rotary switch "Operating mode"
9 Emptying boiler
10 Off
When the vehicle is not used for a long period of time, open the safety/
drainage valve and empty the boiler.
If the temperature is below 6 °C, the safety/drainage valve is opened auto-
matically when one of the following prerequisites is met: The device is
switched off (OFF); the "Heater without boiler" operating mode has been
selected; the battery capacity is too weak; an error has occurred.
The water pump and the water pipes 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.