Rinnai aiM 115, Руководство пользователя и инструкция по установке

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The duration of operation of the entire heating system is also
determined by the quality of the water.
The pH value of the untreated water must be maintained
between 7.5 and 9.5. These pH values must be obtained later
have stabilized the system, or after carrying out the filling
the system with mains water (usually with pH around 7) and
deaerated the entire system. If in the circuit they are present
aluminum components (e.g. radiators), the pH value must be
less than 8.5.
Periodic refills with untreated water involve:
•
introduction into the circuit of oxygen and dissolved gases,
which they can cause the formation of oxides or corrosion
(problems that can be contained with appropriate vents);
•
introduction of carbonates, which lead to formation of
limestone inside the main exchanger of the boiler.
If in the period following installation the system is not free
from debris / contamination, one should be installed plate
heat exchanger to separate the boiler from the heating
circuit. To avoid the presence of oxygen in the system, it is
recommended to avoid as much as possible water changes.
The use of chemicals to treat the plant should be discussed
with a company specialized in water treatment, in any case it
is good not add antifreeze liquids to the system water.
Before installation, a washing must be carried out accurate
of all the pipes of the system to remove any residues or
impurities that could compromise the proper functioning of
the boiler. This is in case of new implant, in which there could
be materials of result, both in the case of an existing plant, in
which yes recommends carrying out a thorough washing of
the pipes such as heating terminals (eg radiators).
Requirements and conditions
Feed water characteristics
In areas characterized by the presence of hard water, the use
of an adequate treatment system is recommended of water as
required by national legislation. Specifically, the water should
respect the following values:
TOTAL POWER
INSTALLED (kW)
HARDNESS
°f mol/m
3
< 600 5 - 15 0,5 - 1,5
> 600 5 - 7 0,5 - 0,7
A filter (with 0.3 mm mesh) must be installed on the system
return pipe to prevent impurities or sludge clogs the system
and damages the boiler.
In conclusion, adequate treatment is recommended of the
filling water in the following cases:
•
systems with large water content;
•
water hardness not compliant with the above specified;
•
frequent replenishments due to leaks,
•
maintenance operations even with water hardness less
than 12 ° f;
•
exceeding the maximum make-up volume indicated.
To ensure the validity of the guarantee and a correct operation
of the appliance, both single and in cascade, the installation
must always include:
- deaerator;
- Balancer plumber or
heat exchanger plate;
- Dirt separator;
- Expansion vessel
(one for each boiler).
Expansion vessel
The thermal generators of the Rinnai aiM range are supplied
without of expansion vessels. The expansion tank must be
INAIL
Polyphosphate
dispenser
Softener
BYPASS
General water
supply
Safety filter
filtering capacity
at least 50 mc
inserted into the system by the installer. It is recommended
the installation of a 24l expansion tank on the circuit primary.
The expansion vessel for the secondary circuit must be sized
by the designer.
It is recommended to install the expansion tank on the
return heating; we also recommend the installation of valves
of interception, a mountain and a valley, to facilitate any
maintenance. The installation of a shut-off valve (manual and /
or automatic) between the vessel expansion and the boiler, for
safety reasons.
The device is not suitable for systems with vessels of open
expansion and for systems made with pipes in plastic without
an oxygen barrier (the pipes must ensure oxygen permeability
<0.1g / m³ day at 40 ° C according to DIN 4726 to 4729). In
these cases the appliance must always be isolated by one
exchanger. It is also advisable to make sure that the system
with plastic pipes both and remain carefully vented.
Connection to the heating system
Deaerator
Flow
Return
Balancer
Dirt separator