2
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 quali-
fied contractors.
■
Work on electrical equipment may only be carried
out by a qualified electrician.
Regulations to be observed
■
National installation regulations
■
Statutory regulations for the prevention of accidents
■
Statutory regulations for environmental protection
■
Codes of practice of the relevant trade associations
■
All relevant safety regulations as defined by DIN, EN,
DVGW, VDE and locally applicable standards
a
ÖNORM, EN and ÖVE
c
SEV, SUVA, SVTI, SWKI and SVGW
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.
■
Safeguard the system against reconnection.
■
Wear protective clothing.
!
Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing any work, touch earthed
objects such as heating or water pipes to dis-
charge static loads.
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.
Repair work
!
Please note
Repairing components that fulfil a safety func-
tion can compromise the safe operation of the
system.
Replace faulty components only with genuine
Viessmann spare parts.
Safety instructions
5813557
Summary of Contents for CVA
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