Technical data

1 Introduction
102
For the installation of the Thermo 90-TRS or
Thermo 90 S-TRS in vehicles used for the transportation
of da
ngerous goods, in addition to the StVZO, the
requirements in TRS 002 and TRS 003 (Technical
Guidelines for the Transportation of Dangerous Goods on
Roads) must be met.
The heater may only be installed in motor vehicles or in
in
dependent heating systems with a minimum coolant
capacity of 6 litres.
The heater must not be installed in the passenger or
driver compartments of vehicles. Should the heater
neverthe
less be installed in such a compartment, the
installation box must be sealed tight against the vehicle
interior. There must be sufficient ventilation of the
installation box from the exterior in order not to exceed a
maximum temperature of 60° C in the installation box.
Excessive temperatures may
cause malfunctions.
WARNING
Due to the danger of poisoning and suffocation, the
hea
ter must not be operated in enclosed areas such
as garages or workshops without an exhaust venting
facility, not even if the start-up is activated by the
timer or telestart device.
At filling stations and fuel depots the heater must be
swit
ched off as there is a potential danger of
explosion.
CAUTION
Where flammable fumes or dust may build up
(e
.g. in the vicinity of fuel, coal, wood, cereal depots,
o
r similar installations) the heater must be switched
off to prevent explosions.
In the vicinity of the water heater a temperature of 85° C
m
ust not be exceeded under any circumstances
(e.g. during body paint work).
A violation of this temperature limit may cause permanent
da
mage to the electronics.
When checking the cooling water level, proceed in
accordan
ce with the vehicle manufacturer's instructions.
The water in the heating circuit of the heater must contain
a minimum of 10% of a quality brand anti-freeze.
Ignoring the installation instructions and its procedures
wil
l void the warranty granted by Webasto. The same
applies fo
r repairs performed by unskilled personnel and
repairs without using original spare parts. This will void the
water heater's "Official Marks of Conformity" and thus the
vehicle's permit of operation.
1.5 Legal Provisions for Installation
For testing the heater in accordance with § 19, 20, or 21
of the StVZO the following regulations are to be observed
in particular (§ 22 a StVZO):
Testing is performed upon presentation of the operating
a
nd installation instructions of the manufacturer. The
year of the initial operation must be durably marked on
the heater identification plate by the installing person.
Extracting combustion air from the
vehicle interior is not
permissible.
The exhaust line outlet is to be positioned at the top, at
the side, or in case of exhaust venting, below the vehicle
floor, to the ne
arest possible location of the vehicle's or
cockpit side or rear end. Exhaust pipes must be routed
so that exhaust fumes are unlikely to penetrate into the
vehicle's inter
ior. The function of any parts vital for
vehicle operation must not be impaired. Condensation
accumu
lation in the exhaust line must be directly
drained. A condensation drain hole may be provided as
re
quired.
In installations the openings of the combustion air inlet
an
d the exhaust outlet must not allow a ball of 16 mm in
d
iameter to be inserted.
Electrical lines, switch gear, and control gear of the
h
eater must be located in the vehicle so that their proper
fun
ction cannot be impaired under normal operating
conditions.
For the routing of fuel lines and the installation of
add
itional fuel tanks, §§ 45 and 46 of the StVZO are to be
adhered to. The most important regulations are:
• Fuel lines are to be designed in such a way that
they remain unaffected by torsional stresses in the
veh
icle, engine movement, and the like. They must be
protected against mechanical damage. Fuel-carrying
parts are to be protected against excessive heat and
are to be arranged so that any dripping or evaporating
fuel can neither accumulate nor be ignited by hot
components or electrical equipment.
• In busses, fuel lines and fuel tanks must not be located
in
the passenger area or in the driver's compartment.
In these type of vehicles the fuel tanks must be located
such that they do not pose a direct hazard to the exits
in the event of a fire. Fuel supply must not be by
means of gravity or pressurisation of the fuel tank.