Installation manual

Webasto Product N.A., Inc. 34 www.techwebasto.com
Initial Start-up Thermo 90 S / Thermo 90 ST
13. Initial Start-up
IMPORTANT!
Refer to the safety instructions in the operating and maintenance instructions.
The operating and maintenance instructions must be read through without fail before starting the
heater.
NOTE:
As a result of the low fuel consumption the heater must be switched on several times to fill the fuel line and prime the
system.
After you have installed the heater, bleed the water system and the fuel supply system carefully. Follow the instructions
supplied by the vehicle manufacturer for this purpose.
Conduct a trial of the heater to check all the water and fuel connections for leaks and to ensure that they are secure.
If the heater suffers a fault during operation, the fault must be located and remedied.