9
INSTALLATION
latter from becoming oxidized), it is necessary:
− for the expansion system to be a closed vessel type, cor-
rectly scaled and with the correct pre-loading pressure
(to be regularly checked);
− for the installation to always be at a higher pressure
than that of the atmosphere at any point (comprising the
pump suction side) and under all running conditions (all
the water sealing and couplings in the installation are
designed to resist pressure towards outside, but not for
depression);
− that the installation will not be made with materials per-
meable to gas (e.g. plastic pipes for floor systems without
anti-oxygen barrier).
0
Please contact the
R
Technical Assistance Service for
flushing out the water circuit inside the exchanger. Do not
use incompatible liquid detergents, including acids (e.g. hy-
drochloric acid and similar acids) at any whatsoever con-
centration.
9
Lastly we would remind you that the warranty does not cov-
er breakdowns incurred by the boiler due to deposits and
corrosion.
4.8
Positioning and preparation for installation
Follow the procedure below to install the thermal groups:
1
After unpacking the boiler/s, establish the output di-
rection of the water, gas and condensate pipes (e.g.:
left or right connection). It is recommended to take
into account the electric connections (230 V supply) of
the thermal group too (see “5 Installation diagrams”).
Please note that each pipes connection to
the system can be indifferently made at
the right of left side of the thermal group.
However, it is suggested to follow one of the schemes
of installation reported on this manual (see chapter 5).
Place the thermal group/s near the inlet and outlet pipes
of the system.
The groups can be installed either with right
or left outlet of water, air, smokes, condensate, gas pipes
(e.g.: air inlet on the right, water outlet on the left, gas on
the right).
2 The position of each
Condexa Pro2 EVO
, inside the area of
installation can vary according to specific requirements of
space or to the type of the installation itself (e.g.: leaned
against the wall, back-to-back, etc.); in any case, make sure
that same necessary space is left for the passage of the elec-
tric supply cables of each
Condexa Pro2 EVO
, and to let the
front panel open. Space is also required in case of mainte-
nance services of the flue, condensate, and gas pipes.
3 Mount the side panels of the
Condexa Pro2 EVO
, and con-
nect the thermal group to the system, use the correct con-
nections and carefully avoid any sudden variation of sec-
tion among the piping of both the boilers and the system. If
necessary, adjust the boiler’s feet height to level the frame
of the boiler and to open the doors easily.
4.9
Condensate outlet
The condensate water produced by Condexa Pro2 EVO a normal
running conditions is evacuated into a special manifold made
of plastic..
Drainage must be done at atmospheric pressure, i.e. by dripping
into a connected drain-trap, as follows:
− install a drip at the condensate drainage manifold;
− connect the drip to the sewerage mains by a drain-trap;
− be ready to use a neutralizer where required (see project
cig E.01.08.929.0; ATV A 115).
There is generally no need to take any special precautions for
draining condensate.
We advise using plastic (PP) piping for building the condensate
drainage.
0
DO NOT for any reason use pipes in copper or in any other
material not specifically used for this particular scope, as the
condensing action could cause rapid degradation.
9
The condensate drain must be connected to the sewerage
mains in such way as to prevent it from being frozen under
any circumstances.
Furthermore, should the vertical part of the flue exhaust duct
have to be prolonged by more than 2 metres the condensate
drain-trap will have to be placed at the foot of the piping. The
working height of the drain-trap must be at least 30 cm. The
drain-trap outlet must then be connected up to the sewerage
mains.
9
Always install a condensate drain in the exhaust flue duct at
no more than 1 m from the boiler
i > 3°
Civil drain
SC
i
i
i > 3°
Figure 7
