11
2.3.7 Water treatment
If used correctly water treatment can improve the boilers
efficiency and increase the anticipated life expectancy of the
boiler. For further information a special document “Quality
requirements CH water” is available from Broag.
As most systems contain a variety of metals, it is considered
good practice to provide some form of water treatment in order
to prevent or reduce the following:
•
Metallic corrosion
•
Formation of scale and sludge
•
Microbiological contamination
•
Chemical changes in the untreated system water
All scale deposits however small will reduce the efficiency of
the boiler and should be prevented.
Suitable chemicals and their use should be discussed with a
specialist water treatment company prior to carrying out any
work (environmental aspects, health aspects). The specifica-
tion of the system and manufacturers recommendations must
be taken into account, along with the age and condition of
the system. New systems should be flushed thoroughly to
BS 7593(1992) to remove all traces of flux, debris, grease
and metal swarf generated during installation. Care to be
taken with old systems to ensure any black metallic iron oxide
sludge and other corrosive residues are removed, again by
power flushing, ensuring that the system is drained completely
from all low points.
Please ensure that the new boiler plant is not in circuit when
the flushing takes place, especially if cleansing chemicals are
used to assist the process.
It is important to check the inhibitor concentration after installa-
tion, system modifications, filling the system and every service
in accordance with these instructions.
For the correct dosage and the suitability of inhibitors for use
with our boilers and for further information on water treatment
or system cleaning we advise direct contact with either of the
following companies:
‘Copal
®
’
or:
Sentinal ‘X100
®
’
manufactured by:
manufactured by:
Fernox, Cookson Electronics
BetzDearborn Ltd
Forsyth Road
Sentinal
Sheerwater
Foundry Lane
Woking
Widnes
Surrey GU21 5RZ
Cheshire WA8 8UD
Tel No: 01483 793200
Tel No: 0151 424 5351
Fax No: 01483 793201
Fax No: 0151 420 5447
Email: [email protected]
Web site: www.fernox.com
