OTHER FEATURES
The water circulation pump remains in operation
as long as the heater is operating, even during
the regulated intervals and during the delayed
cut-out of the heater. The pump can also be
operated independently of the heater by means
of an appropriate circuit. The heater can be
switched ON at any time (i.e., during the delayed
cut-out period). Ignition takes place after the
delayed cut-out time expires.
SWITCHING THE HEATER OFF
The fuel supply is interrupted when the heater is
switched OFF. This causes the flame to go out
and a delayed cut-out of 2.5 minutes begins.
The circulating combustion air flushes the
remaining combustion gases out of the chamber
and cools off the heated parts on the exhaust
side of the heat exchanger. The water
circulation pump continues to transfer the latent
heat present in the heat exchanger, thus
preventing hot spots. Once the delayed cut-out
time expires, both the combustion air blower and
the water circulation pump switch OFF
automatically. A cut-out will automatically take
place in case of heater failure. Refer to chapter
8, "Technical Information" for more information.
COOLANT HEATER TIMER
The timer, located on L.H. lateral console is used
to program the starting and stopping time of the
preheating system. One of three possible timers
may be installed in your vehicle (refer to the
three following images). The system indicator
light, located on the timer, illuminates when the
system is functional.
Caution: The preheating system should not
operate for more than one hour before starting
engine as this could discharge batteries.
Warning: Preheating system must not operate
when vehicle is parked inside or during fuel fill
stops.
Note: Preheating system uses the same fuel as
the engine.
Timer Operating Instructions (Webasto)
WEBASTO 18046
These instructions refer to the WEBASTO timer
illustrated above
Note: Heater timer control pad may differ from
the one described. Refer to your manufacturer's
instruction booklet for detailed operating
instructions.
To Set the Clock
If the time display e.g. 18:33 is wrong, or if it
flashes 8:88, hold
and press either
(backwards) or
(forwards). The longer you
hold the button down, the quicker the display
changes. The last few minutes are set accurately
by quick pushes. Adjust to get exact time, e.g.
23:59. The display fades after 20 seconds.
Present Time Display
Press
at any time. Present time appears on
the screen.
Manual Heating Start-Up
Press
to switch the heater on or off
immediately. The green light illuminates when
the heater is on.
4-13
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