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2 .5 Installation in older systems and systems requiring modernisation
When installing RESIDENCE COLONNA CONDENS SOLAR boilers in old systems or systems requiring modernisation, always
perform the following checks:
− Make sure that the flue is able to withstand the
temperature of the combustion gases and that
it has been designed and made in compliance
with applicable standards. The flue must also be
as straight as possible, sealed, insulated and not
blocked or choked.
− Make sure that the flue is fitted with a conden-
sation drainage union.
− Make sure that the electrical system has been in-
stalled by a qualified electrician in compliance
with applicable standards.
− Make sure that flow rate, head and direction of
flow of the pumps are suitable and correct.
− - Make sure that the fuel feed line and any sto-
rage tank are made and installed in compliance
with applicable standards.
− Make sure that expansion vessels are big enough
to contain the additional volume generated by
thermal expansion.
2 .6 Water in central heating systems
INTRODUCTION
Water used in central heating systems MUST be suitably
treated to ensure the correct functioning of those sy-
stems and to guarantee an extended working life for
boilers and all other system components.
This applies not only to existing systems but to newly
installed systems too.
Sludge, limescale and other contaminants in water can
cause irreversible damage to boilers even in relatively
short times, and despite the use of top quality materials
in their manufacture.
Contact r's Technical Assistance Service for further
information on water additives and their use.
− Make sure that the central heating circuit has
been flushed out to remove all sludge and lime
scale, and that it has been bled and seal tested.
− Make sure that a suitable water treatment system
is installed. (See the "Water in central heating sy-
stems" section.) Refer to the r catalogue for
details of specific products.
9
The manufacturer declines all responsibility for
damage caused by incorrectly constructed flue sy-
stems .
9
Flue pipes for condensing boilers must be made
from special materials, different from those used
for standard non-condensing boiler flues.
9
Use only products that do not corrode aluminium
to flush out the system.
9
Always conform to the standards and legislation
applicable in the country of installation.
23
INSTALLER
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