Viessmann VITOCAL 222-S Installation And Service Instructions Manual page 2

Safety instructions
Safety instructions
Please follow these safety instructions 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 environmental pollution.
Note
Details identified by the word "Note" contain additional
information.
Target group
These instructions are exclusively intended for author-
ised contractors.
Work on the refrigerant circuit may only be carried
■
out by authorised refrigeration engineers.
■ Work on electrical equipment must only be carried
out by a qualified electrician.
The system must be commissioned by the system
■
installer or a qualified person authorised by the
installer.
Regulations to be observed
National installation regulations
■
Statutory regulations for the prevention of accidents
■
■ Statutory regulations for the protection of the envi-
ronment
■ Codes of Practice of the relevant trade associations
All relevant safety regulations as defined by DIN, EN,
■
DVGW, VDE and locally applicable standards
ÖNORM, EN and ÖVE
a
SEV, SUVA, SVTI, SWKI and SVGW
c
Working on the system
Isolate the system from the power supply (e.g. by
■
removing the separate fuse or by means of a mains
isolator) and check that it is no longer 'live'.
Note
In addition to the control circuit there may be several
load circuits.
Danger
Contact with 'live' components can result in
severe injuries. Some components on PCBs
remain 'live' even after the power supply has
been switched off.
Wait at least 4 minutes before removing equip-
ment covers, to allow the voltage to dissipate.
■ Safeguard the system against reconnection.
2
!
Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing work, touch earthed
objects such as heating or water pipes to dis-
charge static loads.
Repair work
!
Please note
Repairing components that fulfil a safety func-
tion can compromise the safe operation of your
system.
Replace faulty components with genuine
Viessmann spare parts.
Auxiliary components, spare and wearing parts
!
Please note
Spare and wearing parts that have not been tes-
ted together with the system can compromise its
function. Installing non-authorised components
and making non-approved modifications or con-
versions can compromise safety and may inva-
lidate our warranty.
For replacement, use only spare parts supplied
or approved by Viessmann.