8
1-3
1-4
INSTALLERUSER
MAINTENANCE TECHNICIAN
Attention: Immergas declines all liability in the
event of damage caused by the inclusion of auto-
matic lling that is not its own brand.
In order to meet the system requirements es-
tablished by EN 1717 and in observance of local
technical regulations in force on the pollution
of drinking water, 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 uid (ex: water + glycol) in the
boiler’s primary circuit (CH circuit), as dened
in standard EN 1717.
Attention: to preserve the duration of appliance
eciency features, we recommend the 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
produced by the appliance, it is necessary to
connect to the drainage system by means of acid
condensate resistant pipes, with an internal Ø of
at least 13 mm. e system connecting the appli-
ance 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.
Also, comply with national and local regulations
on discharging waste waters.
Aer rst ignition, check that the drain trap is
lled with condensation (paragraph. 1.21)
1.9 ELECTRIC CONNECTION.
e operations described below must be performed
aer aer having disconnected the electrical supply
from the appliance.
e electrical system must be built in compliance
with technical standards and all legislation in
force. e 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
specied 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 ecient earth
system or failure to comply with the reference
standards.
Also ensure that the electrical installation corre-
sponds to maximum absorbed power specica-
tions as shown on the boiler data-plate.
Boilers are supplied complete with an “X” type
power cable without plug. e 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
qualied company (e.g. the Immergas Authorised
Aer-Sales Technical Assistance Service). e
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. e
boiler can directly supply a low temperature
system, limiting the value of the “P02” pa-
rameter, which denes the generator’s ow
temperature. In this situation it is good practice
to insert a safety device in series with the power
supply and boiler. is device is made up from
a thermostat with a temperature limit of 55
°C. e thermostat must be positioned on the
system ow pipe at a distance of over 2 metres
from the boiler.
Supply
cable
EXTERNAL RELAY
(OPTIONAL)
230 Vac
50Hz
FUSE
230 Vac COIL
MAX 0.1 A
ALARM
FREE CONTACTS
MAX 1 A. 230 Vac
External reset
230 Vac
ANALOGUE
INPUT
BUS
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