155I-Modell - 11/12 - Ausgabe 09/11 - 2096165 - BUE-0056-05EN
Appliances
9
When the heater is turned on, it starts with the last set operating mode.
Switching on the heater:
Press " " button. The Start screen appears in the display. The heater
starts automatically.
Switching the heater off:
Press " " button. The heater is turned off.
Setting the rotational
speed of the circulating
pump
The rotational speed of the circulating pump can be set with the control knob
(Fig. 161,2). At a lower rotary speed, the operating sounds of the pump are
quieter.
The control knob is located on the circulating pump (Fig. 161,1).
Setting the output:
Turn the control knob (Fig. 161,2) in an anticlockwise direction. The output
is reduced.
Rotate the control knob in a clockwise direction. The output is increased.
3-way valve For models with a rear bed, a 3-way valve is connected to the hot water heater
circulation. The 3-way valve is installed in the rear garage. The 3-way valve
can be accessed via an external flap.
Z If gas and 230 V electrical operation is selected and if the vehicle is con-
nected to the 230 V power supply, then the hot-water heater at first only
operates in 230 V electric operation. Only if the heat output is insufficient
does the gas operation also automatically switch on.
Z The gas operation is only possible when the regulator tap on the gas bottle
and the gas isolator tap are opened.
Z 230 V electrical operation is only possible when the vehicle is connected to
the 230 V power supply.
Z The hot-water heater is equipped with a very powerful pump. Only operate
the pump for approx. 5 minutes on full output when the system is emptied
or the pipes are bled. Otherwise, this will increase wear; loud operating
noises are the result.
Fig. 161 Speed reduction
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