Place Of Installation; Installation In Older Systems And Systems Requiring Modernisation - Beretta IDRA N DS 1500 Installation And Operation Manual

13 PLACE OF INSTALLATION

storage cylinders can be installed in any
IDRA N DS
B
room where there is no specific requirement for an electri-
cal protection rating higher than IP X0D.
b
Specified minimum distances must be respected,
and the space in which the storage cylinder is to be
installed must be easily accessible in order to per-
mit easy installation and assembly and subsequent
inspection, maintenance and repair. In particular,
access must permit the storage cylinder to be re-
moved without disassembly at the end of its useful
life, and another unit to be installed in its place. Users
are therefore responsible for any costs incurred to
demolish masonry or other structures preventing or
impeding free access to the space where the storage
cylinder is to be installed.
14 INSTALLATION IN OLDER
SYSTEMS AND SYSTEMS
REQUIRING MODERNISATION
When installing
IDRA N DS
B
systems or systems requiring modernisation, always per-
form the following checks.
- Make sure that the system is fitted with safety and
control devices in accordance with applicable legis-
lation and standards
- Make sure that the central heating circuit has been
flushed out to remove all sludge and lime scale, and
has been vented and seal tested
- Make sure that a suitable water treatment system is
installed if the quality of the supply/recirculation water
so demands (refer to the reference values listed in
the table alongside).
REFERENCE VALUES
pH
Electrical conductivity
Chlorine ions
Sulphuric acid ions
Total iron
Alkalinity M
Total hardness
Sulphur ions
Ammonia ions
Silicon ions
storage cylinders in old
6-8
less than 200 μS/cm (25°C)
less than 50 ppm
less than 50 ppm
less than 0.3 ppm
less than 50 ppm
less than 35°F
none
none
less than 30 ppm
13