System Water Quality; Care With The Use Of Solder Flux - MHG Heating ProCon HT Installation And Operating Manual

11.0 System Water Quality

Water Treatment, System Cleaning (BS 7592: 2006)(Part L2 Building Regulations)
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.
When utilizing HTP boilers system water treatment must be applied to the primary
circuit.
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

11.1 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.
MHG Heating Ltd, Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey, KT20 5LR
P:0845 6448802 F:0845 6448803 E:
© MHG Heating Ltd
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Forsyth Road
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Woking
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Tel: 0208 665 6666
Fax: 0208 665 4695
info@mhgheating.co.uk
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