11
R
AF
RC
SC
AC
M
G
V
CAVO
ALIMENTAZIONE
11
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
POWER
CABLE
5
According to local regulations in force,
make sure that a gas cock is installed
upstream of each connection between
the appliance and the gas system.
Th
is cock,
if supplied by the appliance
’
s manufacturer,
can be directly connected to the appliance
(
i.e. downstream from the pipes connecting
the system to the appliance
)
, according to the
manufacturer
’
s instructions.
The Immergas connection unit, which is a
standard supply, also includes the gas cock,
whose installation instructions are provided
in the kit.
In any case, make sure the gas cock is con-
nected properly.
Th
e gas supply pipe must be suitably dimensioned according to
current regulations in order to guarantee correct gas
fl
ow rate to
the burner even in conditions of maximum generator output and
to guarantee appliance e
ffi
ciency (technical specifications).
Th
e
coupling system must conform to standards in force (EN 1775).
ATTENTION:
the appliance is designed to operate with
fuel gas free from impurities; otherwise
it is advisable to fit special filters upstream of
the appliance to restore the purity of the fuel.
1.5 BOILER CONNECTION UNIT.
Th
e connection unit consisting of all the necessary parts to per-
form the hydraulic and gas system connections of the appliance
comes as a standard supply. Perform the connections respecting
the layout of (Fig. 4
)
based on the type of installation to be made.
1.
6
GAS CONNECTION.
Our boilers are designed to operate with methane gas (G20) and
L.P.G. Supply pipes must be the same as or larger than the 3/4”G
boiler fitting.
ATTENTION:
Before connecting the gas line, carefully
clean inside all the fuel feed system pipes
to remove any residue that could impair boiler
e
ffi
ciency. Also make sure the gas corresponds
to that for which the boiler is prepared
(
see
boiler data nameplate
)
. If different, the boiler
must be converted for operation with the other
type of gas
(
see converting appliance for other
gas types
)
. It is also important to check the dy-
namic pressure of the mains
(
methane or LPG
)
used to supply the boiler, which must comply
with EN 43
7
and its attachment, as insu
ffi
cient
levels may reduce generator output and cause
discomfort to the user.
5
The kit includes:
N°2 - 3/4” telescopic fittings (R-M)
N°1 - 1/2” telescopic fitting (AC)
N°1 - 1/2” gas cock (G)
N°1 - 1/2” ball valve (AF)
N°2 - Ø18 copper bends
N°2 - Ø14 copper bends
N°1 - Pipe Ø 18
N°2 - adjustable expansion bolts
N°2 - boiler support hooks
Gaskets and seal O-Ring
Key:
V - Electrical connection 230V-50Hz
G - 1/2” gas supply
SC - Condensate draining
R - 3/4” system return
M - 3/4” System flow
RC - 1/2” domestic hot water recirculation
AC - 1/2” domestic hot water outlet
AF - 1/2” domestic hot water inlet
4
