Webasto Air Top Series Operating Instructions

Introduction

Servicing and Safety Instructions

Operating Instructions

Air Top Series Heaters

Dear Webasto Customer,
Thank you for choosing a Webasto Air Top Series Heater.
Air Top Series Heaters are used

– to heat cabins, boats, trucks, minibuses, vans and motor-homes and
– to defrost vehicle windows.

We presume that the principle and mode of operation of your new heater has
been explained to your complete satisfaction by the workshop or service
center which installed the heater. In these operating instructions we would
like to once again provide you with an overview of the safe use of your new
heater.

Repair work should only be carried out by an authorized Webasto dealer.

1. When the heater is in use, the surface of the hot air outlet
Contact with skin may cause burns.

2. Webasto heaters must be switched “off” when re-fueling at gas stations and/or
while loading or unloading flammable materials for transport, to prevent the
risk of explosion.

3. The year in which the heater was used for the first time must be permanently displayed
on the factory plate by deleting the inapplicable years from the plate.

4. The heaters are not designed for heating hazardous substance transport
compartments.

5. Claims can only be made if it can be verified that the claimant has complied with the
servicing and safety instructions.

6. The heater may not be operated in enclosed spaces (such as garages) as a result
of the risk of poisoning and asphyxiation, even if a timer is used.

7. In the event of long-lasting heavy smoke development, unusual combustion noises or a
smell of fuel or if the heater suffers continuous fault cut-outs with error messages
(flashing code), it must be shut down by removing the fuse and must not be used until it
has been inspected by Webasto-trained personnel.

8. Wherever flammable vapors or dust may form, the heater must be switched off
as a result of the risk of explosion.

9. The heat transfer unit on air heaters is exposed to very high thermal stress and
must be replaced by a genuine Webasto spare part after a ten year life cycle.

will become hot to the touch.

10. The fuel specified by the vehicle manufacturer is suitable for use in an Air Top Series
Heater B (gasoline).

The diesel fuel specified by the vehicle manufacturer is suitable for use in an Air Top Series
Heater D (diesel).

There are no known negative influences due to fuel additives when used appropriately.

If fuel is extracted from the vehicle’s tank, follow the additive instructions issued by the
vehicle manufacturer.

If you change to low-temperature fuel, the heater must be operated for approx. 15
minutes so that the fuel system is filled with the new fuel.

11. The temperature in the area around the heater must not exceed 85 °C / 185° F (storage
temperature). If the temperature exceeds this level there is a risk of permanent damage
to the electronics systems.

12. Non-compliance with the installation instructions and the warnings contained therein will
lead to the exclusion of all liability by Webasto. The same applies if repairs are carried out
incorrectly or by untrained technicians or with the use of parts other than genuine spare
parts. This will result in the invalidation of the type approval for the heater unit.

13. Keep the hot air inlet and hot air outlet free of dirt and foreign bodies. Soiled or blocked
hot air lines may cause overheating.

14. To prevent mechanical parts seizing, the heater should be operated for approx. 20
minutes once a month.

15. Do not stand on the heater, do not place any items of clothing, textiles or similar materials
over the heater or in front of the hot air inlet and the hot air outlet.

16. The flow of hot air through the heater must not be restricted or blocked by highly
flammable substances or materials such as rags, cleaning wool, etc.

17. The heater must not be cleaned with a high pressure cleaner.

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Control Element

Switch On

Ventilation Option

SmarTemp Control

Rotary knob for:

- Switching on and off

- Setting the room temperature

- Resetting after a fault cut-out

Indicator / error code display

Set the rotary knob on the control element to the desired temperature.

NOTE:

To prevent the combustion air fan from scraping, ensure that there are no objects on
or against the heater before you turn it on.

Changes to the settings
on the control element
will be carried out with
a short time delay

A separate switch (optional) allows the user to choose between heating and ventilation
mode. In ventilation mode the fan speed depends on the position of the control element
knob.

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Heater ON Example

Press the Webasto button to turn heater on.

Set Temperature Output & Heater Runtime Example

Using the rotary dial and the selection button, follow these steps to set your cab
temperature to 70°F with a runtime of 4 hours.

1. Press the Selection button. Using the rotary dial, select: Options > Duration >
Timed > Adjust runtime to 4 hours. Confirm the adjustment by pushing the
selection button.

2. From the main screen use the rotary dial to adjust the set temperature to 70°F;
confirm the adjustment by pushing the selection button.

NOTE: The set temperature can be adjusted quickly even when the heater is running using
the same method as above.

Set Timer Example

Set timer to turn on Friday at 6:30AM with a runtime of 60 minutes.

1. Press the Selection button. Using the rotary dial, select Timer.

2. Highlight the timer feature, press the Selection button. Select “edit” from the
sub-menu.

3. Adjust and select day for Friday.

4. Adjust and select time for 6:30AM.

5. Adjust and select runtime for 60 minutes.

6. Settings are saved each time the selection button is pressed.

Menu Description

Refer to Menu Descriptions Table for a detailed description of each menu item and its default
setting.

Depending on the SmarTemp version, menu order may vary from order below.

Definitions Default

Mode

Mode changes the operation of the heater between

Heat Mode
heat mode and ventilation mode. Status indicator lights
will illuminate red for heat mode and blue for
ventilation mode when the selected mode is active.

Note: Refer to Status Indicator Light description on
page 6 for additional Status Indicator explanation.

Language

Language changes between English, Spanish, and

English
French.

Temp Unit

Temp Unit changes between Fahrenheit and Celsius

Fahrenheit
units of measure.

Options

Advanced level adjustments; see below.

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