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 gas installations may only be carried out by
a registered gas fitter.
■
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 person authorised by the
installer.
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 current safety regulations as defined by DIN, EN,
DVGW, TRGI, TRF, VDE and all locally applicable
standards
a
ÖNORM, EN, ÖVGW G K directives,
ÖVGW-TRF and ÖVE
c
SEV, SUVA, SVGW, SVTI, SWKI, VKF and
EKAS guideline 1942: LPG, part 2
Safety instructions for working on the system
Working on the system
■
Where gas is used as the fuel, close the main gas
shut-off valve and safeguard it against unintentional
reopening.
■
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 suitable personal protective equipment when
carrying out any work.
Danger
Hot surfaces and fluids can lead to burns or
scalding.
■
Before maintenance and service work, switch
OFF the appliance and let it cool down.
■
Never touch hot surfaces on the boiler, burner,
flue system or pipework.
!
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 the
system.
Replace faulty components only with genuine
Viessmann spare parts.
Safety instructions
Safety instructions
5692820
Summary of Contents for VITORADIAL 300-T Type VR3
Page 38: ...38 5692820...
Page 39: ...39 5692820...
