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INHIBITION AND CORROSION PROTECTION – SYSTEMSAFE-DM
IMPORTANT
1. The system is now full of fresh, clean water, and in line
with Building Regulations Part L: 2006, a good quality
corrosion inhibitor, such as SYSTEMSAFE-DM, must be
added to the system water to prevent further
corrosion and scaling.
To comply with Benchmark documentation, inhibitors
must have passed the NSF (formerly BUILDCERT)
product performance standard and can be identified
by this logo on the pack.
UPON COMPLETION
1. Restore system to normal, restoring radiator balance
valves to original settings, removing any temporary
isolating valves or caps on the expansion and cold
feed pipes, and restoring non return valves to normal
operation if necessary.
2. Before re-connecting the feed & expansion tank, it
should be thoroughly cleaned, removing all traces of
dirty water and sludge, and then disinfected with
Kamchlor chlorine release tablets.
Issue: May 2023
2. Briefly open a dump valve to lower the water level in
3. If the system is vented, the residual water in the
NOTE: Clearflow pumps are also very powerful descaling
pumps, suitable for use when descaling the primary
water side of combination boiler heat exchangers, any
conventional domestic boiler, water heaters, direct fired
water heaters, thermal store type water heaters,
showers, and calorifiers.
Section B – Using the Clearflow pump
The inhibitor may be added to the system by using
the Clearflow pump as follows:
the tank to just above the minimum level, close the
dump valve. Add the SYSTEMSAFE-DM inhibitor into
the tank. Allow circulation through the system for ten
minutes, isolate the flushing pump from the heating
system, and switch off.
Clearflow tank, which will contain a small quantity of
inhibitor, may be poured into a bucket and added to
the F&E tank after this has been cleaned.
Note: In a pressurised system the inhibitor may be
injected into the system using an IK6 injector, which
will avoid wasting any inhibitor left in the tank (see
page F.4).
Page B.10
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