Installation manual

Webasto Thermo & Comfort N.A., Inc. 34 www.techwebasto.com
Initial Start-up Thermo Pro 90
13. Initial Start-up
IMPORTANT!
Refer to the safety instructions in the operating and maintenance instructions.
The operating and maintenance instructions must be read thoroughly before starting the heater.
NOTE:
As a result of the low fuel consumption the heater may require several start attempts to fill the fuel line and prime the
system.
Before the heater is operated for the first time, the coolant temperature should be < 60 °C (140°F), as the heater does
not go into combustion operation at high engine temperatures.
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.
Example:
11 sec. filling time with 1m line length, 9 Hz metering pump frequency, 2 mm inside diameter of fuel line.
The CO2 setting is not necessary as part of initial start-up, as the heater has been preset at the factory.
The detailed procedure for CO2 setting is described in the workshop manual.