Webasto ThermoCall TC4 Installation Instructions Manual page 5

Improper installation or repair of Webasto heating and cooling systems can
cause fire or the leakage of deadly carbon monoxide leading to serious injury
or death.
To install and repair Webasto heating and cooling systems you need to have
completed a Webasto training course and have the appropriate technical
documentation, special tools and special equipment.
Only genuine Webasto parts may be used. See also Webasto air and water
heaters accessories catalogue.
NEVER try to install or repair Webasto heating or cooling systems if you have
not completed a Webasto training course, you do not have the necessary
technical skills and you do not have the technical documentation, tools and
equipment available to ensure that you can complete the installation and
repair work properly.
ALWAYS carefully follow Webasto installation and repair instructions and
heed all WARNINGS.
Webasto rejects any liability for problems and damage caused by the sys-
tem being installed by untrained personnel.