© MHG Heating Ltd
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MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone 08456 448802 Fax 08456 448803 Email
Web www.mhgheating.co.uk
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12.0 System Water Quality
Water Treatment, System Cleaning (BS 7592: 2006)
The entire primary system MUST be thoroughly cleaned and flushed to remove debris, flux residues, etc.
before opening the boiler isolation valves & flooding the boiler. Particular care must be taken where the
ProCon boiler is being retro-fitted into an old/existing system, as system silt or magnetite can be very
damaging to the new boiler.
Following cleaning and flushing the system MUST be dosed with a good quality water treatment to prevent
corrosion and the formation of scale. FAILURE TO OBSERVE THESE REQUIREMENTS WILL RENDER
THE WARRANTEE ON THE APPLIANCE VOID.
Cleaning, flushing and water treatment must be carried out in accordance with the requirements of BS
7593:1992, prior to commissioning the boiler.
Repeated draining and refilling of the system, without replenishment of water treatment, must be avoided, as
this is very damaging to the boiler. The boiler must not operate without the system water being correctly and
adequately treated, and maintained, with an appropriate level of corrosion inhibitor.
For specific guidance on water treatment, direct contact is advisable with:-
Fernox
2 Genesis Business Park
Albert Drive
Sheerwater
Woking Surrey
GU21 5RW
Tel:0330 100 7750
Fax: 0330 100 7751
12.1 Care With The Use of Solder Flux
The ProCon HT range has heat exchangers fabricated from 316L Stainless Steel. It is most important that
the compatibility of any flux is checked with the supplier before use, and that any flux manufactures
recommendations are strictly followed with regards to use in conjunction with Stainless Steel.
If you are applying any of the ProCon Range to a system where the water quality cannot be cleansed or
treated please consider installing a system separation plate heat exchanger to ensure absolute separation of
the system water and the boiler water.
Please refer to our website for further details on our matched brazed and gasketed plate heat exchanger
range.