8
1-3
1-4
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Attention:
Immergas declines all liability in the
event of damage caused by the inclusion of auto-
matic filling that is not its own brand.
In order to meet the system requirements estab-
lished by EN 1717 on the pollution of drinking
water and in observance of local technical
regulations in force, we recommend installing
an anti-backflow kit to be used upstream of
the cold water inlet connection of the boiler.
We also recommend using a category 1, 2 or
3 heat transfer fluid (ex: water + glycol) in the
boiler’s primary circuit (CH circuit), as defined
in standard EN 1717.
Attention:
to preserve the duration of appliance
efficiency features, we recommend installation of
a suitable device for water treatment in presence of
water whose characteristics can lead to the deposit
of lime scale.
Condensate drain.
To drain the condensate pro-
duced by the appliance, it is necessary to connect
to the drainage system by means of acid conden-
sate resistant pipes, with an internal Ø of at least
13 mm. The system connecting the appliance to
the drainage system must be carried out in such a
way as to prevent freezing of the liquid contained
in it. Before appliance start-up, ensure that the
condensate can be correctly removed. After first
ignition, check that the drain trap is filled with
condensation (paragraph. 1.21)
Also, comply with national and local regulations
on discharging waste waters.
1.9 ELECTRIC CONNECTION.
The operations described below must be performed
after having disconnected the electrical supply from
the appliance.
The electrical system must be built in compliance
with technical standards and all legislation in
force. The boiler has an IPX5D protection rating
for the entire appliance. Electrical safety of the
appliance is reached only when it is correctly
connected to an efficient earthing system as
specified by current safety standards.
Attention:
Immergas S.p.A. declines any respon-
sibility for damage or physical injury caused by
failure to connect the boiler to an efficient earth
system or failure to comply with the reference
standards.
Also ensure that the electrical installation corre-
sponds to maximum absorbed power specifica-
tions as shown on the boiler data-plate.
Boilers are supplied complete with an “X” type
power cable without plug. The power supply
cable must be connected to a 230V ±10% /
50Hz mains supply respecting L-N polarity and
earth connection;
, this network must also
have a multi-pole circuit breaker with class III
over-voltage category.
The main switch must be installed outside
the rooms in a position that is indicated and
accessible.
When replacing the power supply cable, contact a
qualified company (e.g. the Immergas Authorised
After-Sales Technical Assistance Service). The
power cable must be laid as shown (Fig. 1-3).
In the event of mains fuse replacement on the
connection terminal board, use a 3.15A fast fuse.
For the main power supply to the appliance,
never use adapters, multiple sockets or exten-
sion leads.
Important:
if the Digital Remote Control is
used, arrange two separate lines in compliance
with current regulations regarding electrical sys-
tems. No boiler pipes must ever be used to earth
the electric system or telephone lines. Ensure
elimination of this risk before making the boiler
electrical connections.
•
Low temperature system installation.
The
boiler can directly supply a low-temperature
system, limiting the value of the “P02” pa-
rameter, which defines the generator’s flow
temperature. In this situation it is good practice
to insert a safety device in series with the power
supply and boiler. This device is made up from
a thermostat with a temperature limit of 55
°C. The thermostat must be positioned on the
system flow pipe at a distance of over 2 metres
from the boiler.
Supply
cable
1-4
1-3
EXTERNAL RELAY
(OPTIONAL)
230 vAC coil MAX 0.1 A
ALARM
FREE CONTACTS
MAX. 230 Vac
External reset
230 Vac
ANALOGUE
INPUT
