Gas Connection - Beretta Novella MAXIMA 129 N RAI Installation Manual

Water-side pressure drop
Novella MAXIMA boilers come without a pump. A pump must therefore be provided as part of
the installation.
In order to choose a pump of the right size, bear in mind the boiler's water-side pressure drop,
as shown in the figure below.
22
3.3

Gas connection

Novella MAXIMA boilers must be connected
to the gas supply in conformity to applicable
standards.
Perform the following checks before making
the connection.
- Check that the boiler is compatible with the
type of gas supply.
- Make sure that the gas supply line is per-
fectly clean and free from installation resi-
dues, and that it is of suitable size for the
fitting on the boiler (1"1/2 M).
A filter of suitable particle rating should be
installed.
b
The gas supply line must be suitable for the
flow rate demanded by the burner. The gas
supply line must also be equipped with all
the necessary safety and control devices
required by applicable legislation and stand-
ards.
b
On completion of the installation, check that
all joints are sealed.
700
1 129 N RAI
2 151 N RAI
3 172 N RAI
500
4 194 N RAI
5 215 N RAI
6 237 N RAI
7 258 N RAI
8 279 N RAI
300
100
5000
3
2
1
10000
1 5 0 0 0
8
7
6
5
4
19000
2 6 0 0 0
FLOW RATE (l/h)
GAS
Ø 1"1/2 M
140
Fig. 3.13
Fig. 3.14