RVR Energy Technology MICROMAT EC 45, Instruction For Usage, Installation & Commissioning, Page: 31 / 56

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16.1 water treatment
system cleaning
E n e r g y T e c h n o l o g y
Ltd.
16.2 care with the use of
soldering flux
17.0 electrical
connection
The entire system must be thoroughly cleansed and flushed to remove debris, flux residues etc before opening the
boiler isolation valves & flooding the boiler. Particular care must be taken where the MICROMAT EC boiler is being
retro-fitted into an old/existing system, as system silt or magenite can be very damaging to the new boiler.
The system must be filled with clean chemically neutral water. Water hardness must not exceed 3.6 mol/m
3
(=20
°
dH).
Chloride Concentrations must not exceed 150mg/l.
Following cleansing and flushing, the system must be dosed with a good quality water treatment to prevent corrosion
and the formation of scale. A suitable corrosion inhibitor ‘INIBAL’ is available from RVR Limited and should be used
in all systems. The required concentration is 1-2% of system capacity.
Failure to observe these requirements will render the guarantee on the product void.
Cleansing, flushing and water treatment must be carried out in accordance with the requirements of BS 7593:1992.
The MICROMAT EC boiler has heat exchangers fabricated from 316L stainless steel. It is most important that the
compatibility of any flux is checked with the flux supplier before use, and that any flux manufacturers recommendations
are strictly followed with regards to use in conjunction with stainless steel.
The electrical connections to the MICROMAT EC boiler are made via discreet plugs and sockets (Weiland Type)
which are located within the boiler case and below the control panel.
Connections must only be made using appropriate diameter multi strand flex cables and cable entry must only be
via the rubber glanded cable entry points located at the bottom rear r/h side of the appliance. If the boiler is to be
room sealed flued then care must be taken to ensure the cable entries are reasonably air tight.
For electrical connection plug/socket function and location see fig 20.