21
the system the treatment of the water to prevent premature
scaling of the main heat exchanger is necessary.
The formation of scale strongly compromises the efficiency of
the thermic exchange because small areas of scale cause a
high increase of the temperature of the metallic walls and
therefore add to the thermal stress of the heat exchanger.
Demineralized water is more aggressive so in this situation it
is necessar
y to treat the water with an appropriate corrosion
inhibitor.
-
Any treatment of water by additives in the system for frost
protection or for corrosion inhibition has to be absolutely
suitab
le for all the metals used in the circuit including the
aluminium alloys.
The use of a corrosion inhibitor in the system such as F
ernox
MB-1, BetzDeaborn Sentinel X100 or Copal Salamander
System Inhibitor is recommended to prevent corrosion
(sludge) damaging the boiler and systems;
- If anti-freeze substances are to be used in the system, check
carefully that the
y are compatible with the aluminium.
In particular, DO NOT USE ordinary ETHYLENE GLYCOL,
since it is corrosive in relation to aluminium and its alloy, as
well being toxic.
MTS suggests the use of suitable anti-freeze products such
as Fernox ALPHI 11, which will prevent rust and incrustation
taking place.
Periodically check the pH of the water/anti-freeze mixture of
the boiler circuit and replace it when the amount measured is
out of the range stipulated by the manufacturer ( 7 < pH < 8).
DO NOT MIX DIFFERENT TYPES OF ANTI-FREEZE
- In under-floor systems, the use of plastic pipes without
protection against penetration of oxygen through the walls
can cause corrosion of the system’s metal parts ( metal
piping, boiler, etc), through the formation of oxides and
bacterial agents.
To prevent this problem, it is necessary to use pipes with an
“oxygen-proof barrier”, in accordance with standards DIN
4726/4729. If pipes of this kind are not used, keep the
system separate byinstalling heat exchanger
s of those
with a specific system water treatment.
IMPORTANT
Failure to carry out the water treatment procedure
ma
y invalidate the appliance warranty
When the installation and filling are completed turn on the
central heating system (Section 3.4) and run it until the
temper
ature has reached the boiler oper
ating temper
ature
.
The system m
ust then be immediately flushed through.
The flushing procedure must be in line with BS 7593:1992 Code
of practice for treatment of water in domestic hot water central
heating systems.
Dur
ing this oper
ation, we highly recommend the use of a central
heating flushing detergent (Fernox Superfloc or equivalent),
whose function is to dissolve any foreign matter that may be in
the system.
Substances diff
erent fr
om these could create serious
problems to the pump or other components.
The use of an inhibitor in the system such as Fernox MB-1 or
equivalent is strongly recommended to prevent corrosion
(sludge) damaging the boiler and system.
Failure to carry out this procedure may invalidate the
appliance warranty.
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