Mercedes-Benz Sprinter Operating Instructions Manual page 124

Operating the auxiliary heating system
122
On vehicles with rear-compartment air con-
ditioning, adjustable air vents are integrated
into the roof duct.
To adjust the airflow: open or close the
X
air flap in air vents : as needed.
To adjust the air distribution: turn air
X
vent : to the desired position.
Operating the auxiliary heating sys-
tem
Important safety notes
G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the
vehicle. This is the case, for example in
enclosed spaces or if the vehicle gets stuck in
snow. There is a risk of fatal injury.
Switch the auxiliary heating off in enclosed
spaces without extraction systems, e.g. in
garages. If the vehicle is stuck in snow and
you have to leave the auxiliary heating run-
ning, keep the exhaust pipe and the area
around the vehicle free of snow. To ensure an
adequate supply of fresh air, open a window
on the side of the vehicle that is not facing into
the wind.
G
WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot, e.g.
the exhaust system.
Flammable materials such as leaves, grass or
twigs may ignite if they come into contact
with:
hot parts of the exhaust system
R
the exhaust gas itself
R
There is a risk of fire.
When the auxiliary heating is switched on,
make sure that:
no flammable materials come into contact
R
with hot vehicle components
the exhaust gas can escape from the
R
exhaust pipe unhindered
the exhaust gas does not come into contact
R
with flammable materials.
! Turn on the auxiliary heating at least once
a month for approximately 10 minutes. The
auxiliary heating could otherwise be dam-
aged.
! Make sure that the flow of hot air is not
blocked. The auxiliary heating will other-
wise overheat and switch off.
Your vehicle may be equipped with either an
auxiliary hot-water heater or an auxiliary
warm-air heater. Adjustment and operation of
the:
hot-water auxiliary heater is done via the
R
on-board computer and with the auxiliary
heating button in the control panel
( page 123) or with the remote control
Y
( page 125).
Y
auxiliary warm-air heater is done via the
R
timer above the overhead control panel
( page 127).
Y
The auxiliary heating works independently of
the engine and supplements the climate con-
trol system in the vehicle. The auxiliary heat-
ing heats the air in the vehicle interior to the
temperature set.
If your vehicle is equipped with a hot-water
auxiliary heater, the auxiliary heating also
keeps the coolant warm. This way, the load on
the engine is minimized and fuel is saved.
The heater booster function (
the auxiliary heating supports the climate
control system when the engine is running
and the outside temperature is low.
You can use the auxiliary heating at an out-
side temperature of up to 39 ‡ (4 †). At an
outside temperature above 39 ‡ (4 †) the
page 130) of
Y