Repair manual

23
Temperature Winter diesel Summer diesel or EL Additive
fuel oil Petroleum Regular-grade
petrol
0 °C to -10 °C 100% or 70% + 30% or 30%
-10 °C to -15 °C 100% or 50% + 50% ----
-15 °C to -20 °C 70% ---- ---- + 30% or 30%
-20 °C to -25 °C 50% ---- ---- + 50% ----
Fuel quality
All commercial grade diesel which complies with DIN 51 601
may be used as fuel. Any heating oils which comply with class
EL, DIN 51 603 can also be used.
At temperatures below 0°C diesel must be used as specified
in the table below.
Permissible fuel line dimensions
Inner diameter of the intake pipe = 6 mm dia. to 8 mm dia.
Inner diameter of the return pipe = 6 mm dia. to 8 mm dia.
Permitted intake head and length of intake pipe:
• Where intake head is up to 1.5 m ---> max. length = 25 m.
• Where intake head is 1.5 m to 4.0 m --->
max. length = 15 m.
Permitted line lengths of the return pipe
• Max. length = 18 m
3 / Installation
Please note!
• Admixing waste oil is prohibited.
• It must be possible to filter the fuel under all conditions of
use (as specified in DIN EN 116).
• The HYDRONIC is not approved for use with PME (biodiesel
according to DIN V 51606).
Electrical system
Regulation!
• Electrical leads, switches and control units for heaters must
be arranged in the vehicle so that their operation under
normal operating conditions is not impaired in any way.
All lines leading from heaters to the outside must be laid so
that they are splash-proof at the opening.
• It must be easy for the user to determine the operating state
(as a minimum, whether switched on or off).
Electrical connection of the HYDRONIC
The detailed electrical connection of the HYDRONIC and the
control element is shown in the wiring diagrams on pages 48
to 50.
Please note!
• The wire sizes specified in the wiring diagram must be noted
and adhered to.
• Run “positive-negative” cable section from the HYDRONIC
directly to the battery and connect up.
• When laying the electrical lines care must be taken to ensure
that their insulation cannot be damaged as a result of wear,
bending, becoming caught or the effects of heat.