AIC TMU 500, Руководство по установке и обслуживанию, Страница: 32 / 68

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P
roduct
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nstallatIon
Safety Instructions and Recommendations for the Hydraulic Circuits
î
Check regularly that there
is no water below the ap-
pliance. If there is, call your
installer
î
Check regularly that there is no error
code displayed on the control panel
screen. Call your installer as required.
Periodic checks
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The pressure of the water
network used to fill the appli -
ance must be at least 1,2 bar.
î
If the supply pressure from the network
is higher than 6 bar, make sure to install
a pressure reducing valve set at 4,5 bar.
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Verify the water quality of the network
according to the requirements defined
in this manual and manuals of each
system appliance.
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In case inhibitors are used in the sys-
tem, consult the manufacturer for
product suitability.
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Any antifreeze used in the primary cir-
cuit must comply with Public Hygiene
Regulations and must be non-toxic. A
food-grade Propylene Glycol is recom-
mended. It must be diluted according
to the ratio recommended in the local
regulations, but with a maximum ratio
of 30%.
î
Consult the appliance manufacturer to
determine the compatibility of the anti-
freeze product with the appliance ma-
terials.
Make sure that the circuit is provided
with a safety pressure relief valve and
an expansion vessel that is appropri-
ate for the appliance power and the
system size, and the increase in tem-
perature and pressure.
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The use of antifreeze in the pri-
mary circuit will lead to a reduc-
tion in the heating performance.
The higher the concentration
of antifreeze in the circuit, the
lower the performance. Maxi-
mum output must be adjusted
accordingly.
î
The circuit diagrams are theoretical
representations that do not necessarily
include all the required safety devices.
Make sure to correctly plan your system
according to the applicable local regula-
tions and standard practices.
i
î
It is recommended to install
the following devices in the
system to prevent water
contamination:
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Water filter and/or dirt separator in -
stalled on the return circuit. Have the
water circulate for 2 hours after instal-
lation and prior to appliance start up in
order to clean the circuit of contami-
nants.
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Plate heat exchanger, combined with
a micro-pollutant separator, which will
protect the appliance from any con-
taminants present in an old heating
system, where fittings and pipes can
be corroded. This is also mandatory
for open systems where oxygen can
penetrate the system and cause cor-
rosion.