Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 2

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.
Work on the refrigerant circuit with
■
flammable refrigerant in safety group
A3 may only be carried out by author-
ised heating contractors. These heat-
ing contractors must be trained in
accordance with EN 378 Part 4 or
IEC 60335-2-40, Section HH. The cer-
tificate of competence from an industry
accredited body.
Brazing/soldering work on the refriger-
■
ant circuit may only be carried out by
contractors certified in accordance with
ISO 13585 and AD 2000, Datasheet
HP 100R. And only by contractors
qualified and certified for the processes
to be carried out. The work must fall
within the range of applications pur-
chased and be carried out in accord-
ance with the prescribed procedures.
Soldering/brazing work on accumulator
connections requires certification of
personnel and processes by a notified
body according to the Pressure Equip-
ment Directive (2014/68/EU).
2
Note
Details identified by the word "Note"
contain additional information.
The outdoor unit contains easily flamma-
ble refrigerant in safety group A3
according to ISO 817 and
ANSI/ASHRAE Standard 34.
Work on electrical equipment may only
■
be carried out by a qualified electrician.
Before initial commissioning, all safety-
■
relevant points must be checked by the
particular certified heating contractors.
The system must be commissioned by
the system installer or a qualified per-
son authorised by the installer.