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5 Water System - Heating
Diagram 5.3
13102
Diagram 5.4
14024
5.8 Water Treatment
Existing system- It is ESSENTIAL that prior to installing the
new boiler the system is thoroughly ushed.
New system- For optimum performance after installation, the
boiler and its associated central heating system should also
be ushed.
Flushing should be carried out in accordance with BS7593:
2006 using a cleanser such as Sentinel X300 or X400, Fernox
Restorer or Salamander corrosion guard cleaner.
IMPORTANT: Ensure all cleanser is removed from the whole
system before adding an inhibitor.
For long-term corrosion protection, after ushing, an inhibitor
should be used, refer to the current issue of BS 5449 and
BS 7593 on the use of inhibitors in central heating systems.
Examples are Sentinel X100 Fernox Protector or Salamander
corrosion guard inhibitor.