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High voltage connections
The connection to the mains supply must be made via a separation device
with an omnipolar opening of at least 3.5 mm (EN 60335/1 - category
3). The appliance works with alternating current at 230 Volt/50 Hz, and
is in compliance with Standard EN 60335-1. It is obligatory to make the
connection with a safe ground/earth, in compliance with current directives.
b
The installer is responsible for ensuring the appliance is suitably
earthed; the manufacturer will not be liable for any damage result-
ing from an incorrect or absent earth connection.
b
It is also recommended to uphold the phase-neutral connection
(L-N).
b
The ground/earth wire must be a couple of cm longer than the others.
b
To create the seal of the boiler use a clamp and tighten it on the
cable grommet used.
The boiler can operate with a phase-neutral or phase-phase supply. It is
forbidden to use gas and/or water pipes to earth electrical appliances.
Use the power cable supplied to connect the boiler to the mains power
supply. If the power cable has to be replaced, use a HAR H05V2V2-F
cable, 3 x 0.75mm
, Ø max external 7 mm.
2
4.6
Gas connection
The connection of the gas supply must be carried out in compliance with
current installation standards. Before making the connection:
- check that the gas supplied corresponds to that for which the boiler has
been prepared (see nameplate).
4.7
Removing the casing
To access the internal components, remove the casing as shown below.
3
1a
1
2
1a
b
If the side panels are removed, refit them in their initial position,
referring to the label on the panel itself.
b
If the front panel is damaged, it must be replaced.
b
The noise-absorbing panels in the front and side walls ensure
the airtight seal of the air supply pipe in relation to the place of
installation.
b
It is therefore ESSENTIAL that components are repositioned cor-
rectly after disassembly in order to guarantee the tightness of
the boiler.
4.8
Flue gas exhaust and combustion air suction
To evacuate the combustion products, refer to UNI 7129-7131. Always
comply with the local regulations of the fire brigade and gas company,
and with any possible municipal regulations.
It is essential for flue gas evacuation and boiler combustion air trans-
fer that only original pipes are used (apart from type C6, as long as
it is certified), and that the connection is made as explained in the
instructions supplied with the flue gas accessories. A single flue can
be connected to several appliances provided that every appliance is the
condensing type.
b
b
To tighten the screws, apply a
torque of 0.6 - 0.8 Nm
b
Do not install flue gas outlets near flammable or plastic materials, the
characteristics of which can be changed at high temperatures.
b
The straight length is understood to be without bends, and includes
ends and joints.
b
The boiler is supplied without the flue gas/air suction kit, as it is pos-
sible to use the accessories for condensing appliances best suited to
the installation characteristics (refer to the catalogue).
b
If non-original flue gas and air inlet pipes are used, it must be ensured
that the pipes used are certified and comply with the appliance to
which they are connected, have a temperature class ≥120°C and are
resistant to condensation.
b
To ensure the best installation safety, attach the pipes to the wall (or
ceiling) using specific fixing brackets positioned in line with each joint
(at a distance such that the length of each single extension is not ex-
ceeded) and immediately before and after every change of direction
(bend).
b
The maximum lengths of the pipes refer to the flue accessories avail-
able in the catalogue.
b
It is compulsory to use specific pipes.
b
Heat-sensitive walls such as those made from wood should be pro-
tected with suitable insulation.
b
The non insulated flue gas outlet pipes are potential sources of danger.
b
The use of a longer pipe causes a loss of output of the boiler.
b
The exhaust pipes can face in the direction most suited to the instal-
lation requirements.
b
As envisaged by current legislation, the boiler is designed to take in
and dispose of flue gas condensate and/or meteoric water conden-
sate deriving from the flue gas discharge system using its own siphon.
b
If a condensate relaunch pump is installed, check the technical data
(provided by the manufacturer) regarding output, to ensure it operates
correctly.
- Position the discharge pipe so the connection is fully up against the flue
gas turret of the boiler.
- Once positioned, ensure that the 4 notches (A) engage in the appropriate
groove (B).
- Fully tighten screws (C) tightening the two clamps of the flange so that the
bend is secured.
For the lengths of the outlets, please refer to the chapter Flue gas outlet
configuration table on page 81.
B23P-B53P
Ø60-100
B
A
C
Twin system using the Ø80 twin system connection kit (accessory)
fig. A
9
Ø80-80
Ø80-125
B
B
A
B
C
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