Viessmann VITOCROSSAL Service Instructions Manual page 3

Safety instructions
Danger
Hot surfaces and fluids can lead to
burns or scalding.
Before maintenance and service
■
work, switch OFF the appliance
and let it cool down.
Never touch hot surfaces on the
■
boiler, burner, flue system or pipe-
work.
!
Please note
Electronic assemblies can be dam-
aged by electrostatic discharge.
Prior to commencing work, touch
earthed objects such as heating or
water pipes to discharge static
loads.
Repair work
!
Please note
Repairing components that fulfil a
safety function can compromise the
safe operation of the system.
Replace faulty components only
with genuine Viessmann spare
parts.
(cont.)
Auxiliary components, spare and
wearing parts
!
Please note
Spare and wearing parts that have
not been tested together with the
system can compromise its func-
tion. Installing non-authorised com-
ponents and making non-approved
modifications or conversions can
compromise safety and may invalid-
ate our warranty.
For replacements, use only original
spare parts supplied or approved by
Viessmann.
Safety instructions
3