EdilKamin MAXIMA series Installations-, Betriebs- Und Wartungsanleitung Seite 63

PLUMBING CONNECTION
The plumbing connection depends on the type of system.
However, there are some "common rules":
• The plumbing connection must be carried out by qua-
lifi ed personnel who can issue documentation declaring
correct installation conforming to current law in each
country (for example, in Italy according to Ministerial
Decree 37/2008 and standard UNI 10412-2)
• The plumbing system must operate at a pressure between
1 and 1.5-2 bar on a hot closed-vessel circuit.
Note: DO NOT install the boiler in place of, for example,
a thermocooker installed with an open vessel without an
adequate expansion system making it a closed vessel.
• The separation of the primary from the secondary circuit
is ideal and, in some countries, it is also mandatory in case
of the installation of a heating plant (for example, in Italy,
the reference is the Circular from ISPESL, now INAIL,
of April 2011). This separation is easily carried out using
KIT A2 from Edilkamin.
• The presence of a puffer (inertial storage tank) is recom-
mended but not mandatory. Its presence has the advantage
of freeing the boiler from "sudden" demands from the
heating system and allowing the integration of other heat
sources. It reduces consumption and increases the effi -
ciency of the system.
• The hot water exiting from the output of the stove must
be "directed" differently depending on the objective (hea-
ting, radiators, exchanger, whether or not there is a puffer,
etc.)
• The return temperature of the water at the boiler must be
at least 50-55°C to avoid condensation. Depending on the
system, the installer must determine if anti-condensation
valves or pumps are necessary (fi g. 2).
• A puffer (inertial storage tank) is needed for heating
any installed low-temperature under-fl oor heating panels
according to the guidelines of the manufacturer of the
panels. The under-fl oor panels should not receive water di-
rectly from the boiler, but through mixing valves inclusive
of pressure and temperature regulators.
• The material used in the circuit must be suitable to
withstand any overheating.
• The discharge of the safety valve must be accessible and
visible.
The discharge water must be channelled into a vertical
pipe using a funnel with backfl ow air intakes, appropria-
tely spaced from the discharge point.
The conveying pipe must have the following characteri-
stics:
- Must not originate more than 50 cm from the discharge
of the valve and must be positioned in the same room
where the KIT is positioned.
INSTALLATION
- Must have a vertical expansion of not less than 30 cm.
After which the pipe can continue horizontally with a
gradient that fosters the fl ow of water.
- The diameter of the pipe must be at least one measure-
ment larger than the nominal measurement of the dischar-
ge of the valve. The end of the pipe must discharge into
the sewer system. IT IS FORBIDDEN TO SHUT OFF
THE DISCHARGE
• Verify that the hydraulic system is correctly installed
and is equipped with an expansion tank that is suffi ciently
large to guarantee safety.
The presence of a tank within the boiler-stove does
NOT guarantee appropriate protection from thermal
expansion occurring in the whole system.
Therefore the installer must assess whether an additio-
nal expansion tank is needed, depending on the type of
system installed.
• Fill the system using the fi lling tap (it is recommended
not to exceed a pressure of 1,5 bar).
When fi lling, 'bleed' the pump and the relief tap.
• It is possible that it will be necessary to open the vent
during the initial days of operation to release air in the
system (fi g. 2/a).
Fig. 2
Fig. 2/a
• Based on the type of water, the installer must determine
whether or not to use conditioned products according to
UNI 8065-1989 (treatment of water in heating systems for
civil use).
• As indicated on page 75, the boiler has a low-consumption
circulator to be set for the primary circuit according to its
characteristics.
• Due to the small diameter of the pipes themselves, direct
connection to the radiators prevents normal operation.
• Below are several diagrams of "typical" installations
provided by Edilkamin.
The accessories for their implementation are available from
your dealer.
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