Target Group; Working On The System - Viessmann Vitocell 140-E Installation And Service Instructions Manual

Safety instructions
Safety instructions
Please follow these safety instruc-
tions closely to prevent accidents
and material losses.
Safety instructions explained
Danger
This symbol warns against the risk
of injury.
!
Please note
This symbol warns against the risk
of material losses and environmen-
tal pollution.

Target group

These instructions are exclusively inten-
ded for qualified contractors.
Regulations to be observed
National installation regulations
■
Statutory regulations for the prevention
■
of accidents
Statutory regulations for environmental
■
protection

Working on the system

Isolate the system from the power sup-
■
ply (e.g. by removing the separate fuse
or by means of a mains isolator) and
check that it is no longer live.
Safeguard the system against recon-
■
nection.
!
Please note
Electronic assemblies can be dam-
aged by electrostatic discharge.
Prior to commencing any work,
touch earthed objects such as heat-
ing or water pipes to discharge
static loads.
2
Note
Details identified by the word "Note"
contain additional information.
Work on electrical equipment may only
■
be carried out by a qualified electrician.
The system must be commissioned by
■
the system installer or a qualified per-
son authorised by the installer.
Codes of practice of the relevant trade
■
associations
Relevant country-specific safety regu-
■
lations
Danger
Hot surfaces can cause burns.
Before maintenance and service
■
work, switch OFF the appliance
and let it cool down.
Never touch the hot surfaces of
■
uninsulated pipes and fittings.