Viessmann ES4.A5 OK, Operating Instructions Manual

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3
6167225 GB
Safety instructions for operating the device
Danger
Hot surfaces can cause burns.
■ Do not open the appliance.
■ Do not touch the hot surfaces of
uninsulated pipes and fittings.
Auxiliary components, spare parts
and wearing parts
Caution
Components that were not tested
with the appliance may damage the
appliance or affect its function.
Have all installation or replacement
work carried out exclusively by
heating contractors.
Danger
Damaged equipment poses a
safety hazard.
Check the appliance for external
damage.
Never start up a damaged
appliance.
For your safety (cont.)
Safety instructions
■ All settings and work on the appliance
must be performed as specified in
these operating instructions.
Further work on the appliance may be
carried out only by authorised
contractors.
■
Do not open the appliance.
■
Do not remove its casings.
■ Do not modify or remove any
attached parts or installed
accessories.
■
Do not open or retighten any pipe
connections.
Working on the appliance Cleaning the appliance
■ Clean the exterior of the appliance
with a commercially available
domestic cleaning agent.
Do not use scouring agents,
solvent-based cleaners or steam
cleaners.
■
Regular maintenance ensures
trouble-free, energy efficient,
environmentally responsible and safe
operation.
Have the appliance tested and
serviced by an authorised contractor
at least every 3 years.
Danger
Incorrectly executed work on the
appliance can lead to life
threatening accidents.
Work on electrical equipment may
only be carried out by a qualified
electrician.