© 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
010711
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:-
Betz Dearborn Limited
(Sentiel)
Foundry Lane
Widnes
Cheshire
WA8 8UD
Tel: 0151 424 5351
Fax: 0151 420 5447
Alpha-Fry
Technologies
(Fernox)
Cookson Electronics
Forsyth Road
Sheerwater
Woking
Surrey
GU21 5RZ
Tel: 0208 665 6666
Fax: 0208 665 4695
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.
