55
m
CAUTION
– The height of the boiler is to be such that disassembly
and maintenance interventions are facilitated.
2.8
Plumbing connections
The plumbing connections have the following characteristics
and dimensions.
175
95
65 65 65 65
=
=
48
400
M
Sc
Sc
U
G
E
R
Fig. 11
Description
OPEN HYBRID SMART
M - System delivery
Ø 3/4" G
R - System return
Ø 3/4" G
U - Domestic hot water output
Ø 1/2" G
E - Domestic hot water inlet
Ø 1/2" G
G - Gas supply
Ø 3/4" G
Sc - Condensate outlet
Ø 20 mm
2.9
Condensate outlet/collection
In order to collect the condensate, it is recommended that:
– the appliance condensate outlets and the smoke outlet are
ducted
– a neutralising device is prearranged
– the outlet incline is
>3%
.
m
CAUTION
– The condensate outlet duct must be airtight,
suitably sized to that of the siphon and must not be
restricted at any point.
– The condensate outlet must be constructed in full
compliance of the National or Local regulations in
force.
– Before commissioning the appliance, fill the siphon
with water.
2.10 Gas supply
OPEN HYBRID SMART
boilers leave the factory prearranged for
gas G20 and can also work with G31 without the need for any
type of mechanical conversion. Simply select parameter
"03"
(see “
Parameter setting and display
") and set the type of gas
to be used.
If changing the type of gas to be used, carry out the entire
appliance
"COMMISSIONING"
phase.
Boiler connection to the gas mains must be carried out in full
compliance with installation Standards in force.
Before connecting the boiler to the gas mains, the user must
ensure that:
– the type of gas is correct for the appliance
– the pipes are clean
– the gas supply pipe is the same dimension as or greater than
that of the boiler fitting (G3/4") and with a load loss less than
or equal to that contemplated between the gas mains and the
boiler.
a
WARNING
Once installation has been completed, check that
the joints are air tight as indicated in the installation
Standards.
m
CAUTION
It is recommended that the gas line has a suitable
filter.
m
CAUTION
If the gas supply is changed from G20 to G31, mark the
box on the TECHNICAL DATA PLATE.
X
G31 - 37 mbar
