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2.
C13, C13x; C33, C33x; C43, C43x; C53, C53x; C63, C63x; C83,
C83x, C93, C93x: appliance with airtight chamber, with flue gas
discharge pipe and pick-up of combustion air from outside.
It does not require an air intake point in the installation area.
This type MUST be installed using concentric pipes, or other
types of discharge designed for condensation boilers with an
airtight chamber.
MINIMUM DISTANCES
In order to have access to the boiler to perform regular maintenance
operations, respect the minimum spaces foreseen for installation
(fig. 1).
For correct appliance positioning:
- do not place it on a cooker or other cooking device
- do not leave inflammable products in the room where the boiler is
installed
- heat sensitive walls (for example, wooden walls) must be protected
with proper insulation.
Preliminary check
- Before installation, wash every system piping carefully in order
to remove any residues that may impair the operation of the
appliance.
- Connect the discharge manifold to a suitable discharge system (for
details, refer to chapter 3.8).
- The domestic hot water circuit does not need a safety valve, but
make sure that the pressure of waterworks does not exceed 6 bar.
In case of doubts, install a pressure reducer.
- Prior to ignition, make sure that the boiler is designed to operate
with the gas available; this can be checked by the wording on the
packaging and by the adhesive label indicating the gas type.
- It is very important to highlight that in some cases the smoke pipes
are under pressure and therefore, the connections of several
elements must be airtight.
3.2
Cleaning the system/characteristics of the heating
circuit water
In the case of a new installation or replacement of the boiler, it is
necessary to clean the heating system.
To ensure the device works well, top up the additives and/or chemical
treatments (e.g. anti-freeze liquids, filming agents, etc.) and check
the parameters in the table are within the values indicated.
Parameters
Um
PH value
Hardness
° F
Appearance
3.3
Characteristics of the DHW circuit water
If consumption water has a total hardness between 25° F and 50°
F, install a DHW treatment kit; with a total hardness greater than
50° F, the kit's effectiveness progressively reduces and therefore
the use of an appliance of higher performance or total softening is
recommended; even with a total hardness of less than 25° F, a filter
of appropriate size must be installed if the water comes from the
mains that is not perfectly clean/cleanable.
3.4
Eliminating the air from the heating circuit and boiler
During the initial installation phase, or in the event of extraordinary
maintenance, you are advised to perform the following sequence of
operations (fig. 2):
1.
Open by two or three turns the automatic relief valve cap (A) and
leave it open.
2.
Open the system filling tap located on the water unit.
3.
Switch on the electricity supply to the boiler, leaving the gas tap
turned off.
4.
Activate a heat request via the ambient thermostat or the remote
control panel, so that the 3-way valve goes into heating mode.
5.
Activate a domestic water request as follows: for instantaneous
combi boilers only, use the water heater thermostat; for heating
only boilers connected to an external water heater) for an interval
of 30" every minute to make the three-way cycle from heating to
hot water and vice versa about ten times (the boiler will be go
into alarm as there is no gas under these circumstances, it must
therefore be reset every time this happens).
Heating
Filling water
circuit water
7~8
-
-
15~20
-
clear
6.
Continue the sequence until no more air can be heard coming
from the air vent valve.
7.
Check the system pressure level is correct (the ideal level is 1 bar).
8.
Turn off the system filling tap.
9.
Turn on the gas tap and ignite the boiler.
3.5
Positioning the wall-mounted boiler and hydraulic
connections
The boiler is supplied as standard with a boiler support plate with built-
in pre-assembly template (Fig. 3-3a). The position and dimension of
hydraulic fittings are shown in the detail drawing.
For the assembly, proceed as follows:
- secure the boiler support plate (F) using the pre-assembly template
(G) to the wall and use a spirit level to make sure that everything
is perfectly horizontal
- mark the 4 holes (ø 6 mm) envisaged for securing the boiler
support plate (F) and the 2 holes (ø 4 mm) for securing the pre-
assembly template (G)
- make sure that all measurements are exact, then drill the wall
using drill tips with the diameters indicated above
- fix the plate with the built-in template to the wall.
- assemble the hydraulic equipment supplied: taps, connections,
straight trains (to be shortened if needed), nuts and gaskets (fig.
3-3a).
The tap with filter should be installed on the heating return line.
The tap with filter, unlike the other taps, has a lever with 3 positions:
opening - closing and cleaning.
For the cleaning position see paragraph "5.1 Routine maintenance".
opening
closing
position
position
Make the hydraulic connections and then fix the lower cover
connections.
The position and size of the hydraulic connections are indicated
below:
R
heating return line
3/4"
M
heating delivery
3/4"
G
gas connection
3/4"
AC hot water
1/2"
AF cold water
1/2"
MB water-tank return
3/4"
RB water-tank delivery
3/4"
C.S.I.
R
M
MySMART
filter cleaning
position
M
M
M
M
M
M (R.S.I.)
M (R.S.I.)
G AC AF
5
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