Operation Manual

14
5M
otorcaravan - 09-08 - DET-0033-07EN
Appliances
1
0
10.2.5 Webasto Dual Top hot-air heater
Operating modes The heater has two operating modes:
Summer operation
Winter 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. 159,8).
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. 159,5) flashes alternately green and red.
Summer operation It is not possible to heat the vehicle in "Summer" operating mode. In this oper-
ating mode, only the water in the boiler is heated up to either 40 °C or 70 °C.
Winter operation The heater automatically selects the burner setting, which is necessary to
reach the required room temperature. When the required room temperature is
reached, the burner is switched off. In "Heater and boiler" operating mode
(Fig. 159,4) water in the boiler is also heated uo to 70 °C. In the operating
mode "Heater without boiler" (Fig. 159,2) the heater can be operated with an
empty boiler.
Indicator function
"No water"
When the "Heater and boiler" operating mode (Fig. 159,4) is selected,
although the boiler is empty, the indicator lamp "No water" (Fig. 159,3) flashes.
In this case, switch to the "Heater without boiler" (Fig. 159,2) operating mode.
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).
The heater is powered with diesel fuel from the fuel tank of the base
vehicle. The heater is not approved for operation with fuels of classes EL,
L and PME (biodiesel).
Operate the heater every 4 weeks for approx. 10 minutes in order to pre-
vent a blockage of moving parts.
When there is a danger of frost the heater is not in operation, empty the
heating system.
Do not use the space above and behind the heater as a storage compart-
ment.
Fig. 159 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