REMEHA Quinta 45 Technical Information page 39

NOTE:
• The temperature of the central heating pipes and the radiators can rise to 95°C.
• Use untreated tap water only to fill the CH system.
• The pH value of the system water must be between 6 and 9.
• In case inhibitors are being used, please follow the instructions given below.
Quality requirements CH water
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
IMPORTANT:
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
specification 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.
IMPORTANT:
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 installation, system
modifications, filling the system and every service in accordance with these
instructions.
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