19
D
S
GB
F
Function
Switching on
The pilot lamp in the control element lights up when
the heater is switched on.
The glow plug is switched on and the fan will start
running at a low speed.
Please note!
If there is still too much residual heat in the heat
exchanger from a previous heating operation, first
only the fan (cold blowing) will run.
The heater will only start once all the residual heat
has been dissipated.
Start
AIRTRONIC D2
Fuel starts to be delivered after approx. 60 seconds.
The fuel-air mixture in the combustion chamber
ignites. Once the combi-sensor (flame sensor) has
detected the flame, the glow plug is switched off
after 60 seconds. After another 120 seconds, the
AIRTRONIC
has reached the control stage “POWER”
(maximum fuel quantity and maximum fan speed).
AIRTRONIC D4 / D4S
Fuel starts to be delivered after approx. 60 seconds.
The fuel-air mixture in the combustion chamber
ignites. Once the combi-sensor (flame sensor) has
detected the flame, the glow plug is switched off
after 80 seconds. The
AIRTRONIC
is in the control
mode.
Temperature selection with the control element
The desired indoor temperature is preselected with
the rotary control switch. Depending on the heater
selected, on the size of the room to be heated and
on the prevailing outdoor temperature, this value
may range between +10 °C and +30 °C. The control
switch setting to be selected is an experimental
value.
Control in heating mode
In heating mode, the room temperature and the
temperature of the heating air taken in is
continuously measured.
Control commences if the temperature exceeds the
temperature preselected on the control element.
4 control levels have been provided for so that the
heat flow supplied by the heater can be accurately
adapted to the heating requirements. Each control
setting has its own fan speed and fuel quantity. If
the adjusted temperature is even exceeded at the
lowest control level, then the
AIRTRONIC
is adjusted
to the ‘OFF’ control level and the fan will continue to
run for approx. 4 minutes to allow the heater to cool
down.
Afterwards the fan will continue to run at the slowest
speed (recirculation mode) or will be switched off
(fresh air mode) until a renewed start of the heater.
Fan mode
To start the
AIRTRONIC
in fan mode, the change-
over switch ‘heating / ventilating’ needs to be
actuated first before the heater is switched on.
Switching off
As soon as the
AIRTRONIC
is switched off, the pilot
lamps go out and fuel pumping is switched off. The
fan will continue to run for approx. 4 minutes to cool
down the heater.
For cleaning, the glow plug is switched off for
40 seconds while the fan is still running.
Special case:
If no fuel has been delivered until switch-off, or if
the
AIRTRONIC
is set to the ‘OFF’ control level, then
the
AIRTRONIC
is stopped without the fan continuing
to run.
Model GGVS / TRS 003 / ADR / ADR 99
The
AIRTRONIC
is GGVS / TRS 003 / ADR / ADR 99
suitable. If, in conformity with StVZO (D), the
AIRTRONIC
is to be built into road tankers used to
transport dangerous substances for the purpose of
heating the driver’s cab, the GGVS / TRS 003 / ADR /
ADR 99 regulations have to be complied with.
(More detailed information regarding the GGVS /
TRS 003 / ADR / ADR 99 regulations can be found
in the information sheet with the print
No. 25 2069 95 13 50).
For the wiring, refer to the circuit diagrams at the
end of these instructions.
Heating operation at high altitudes
• Up to 1500 m:
Unrestricted heating operation is possible.
• Above 1500 m:
Heating operation is in principle possible for short
periods, e.g. when crossing a mountain pass or
during a brief stop.
In case of extended stays (e.g. winter camping),
the fuel supply has to be adapted to high altitude
conditions. Please consult the responsible regional
sales agency.
Please note!
The operating instructions included with the control
units have to be handed over to the customer.
