18
INSTALLATION
2.8
Typical water system schematics
Typical installation schematic
1
1
8
1 4
1
3
5
6
7
1
1
1
2
1
Disconnect valves
2
CH radiator
3
DHW circulation pump
4
Non-return valve
5
Pressure reducer
6
Safety valve drain
7
Central heating circuit and storage cylinder drains
8
DHW user
9
The safety valves must be connected to a suitable collection
and drain system.
9
The choice of system components and the method of their
installation are left up to the heating engineer installing the
system. Installers must use their expertise to ensure proper
installation and functioning in conformity to all applicable
legislation.
9
If needed, water supplies and recovery circuits must be
conditioned by suitable treatment systems. Refer to the val-
ues listed in the table on page 22.
0
It is prohibited to operate the circulators without water.
2.9
Fuel connections
The fuel oil supply pipe must be connected directly to the filter
(1) and the return pipe to the fitting (2).
Make sure that these connections are oil tight.
565
600
2
1
Description
INSIEME EVO 32 BS/100
LN
Fittings
2x3/8" M
Ø
If the oil feed system is in negative pressure, the return line must
reach the same height as the suction line. This avoids having to
install a bottom valve, which would be essential if the return
hose were to be located above the level of the fuel.
9
The installer must ensure that the negative pressure differ-
ential in the oil feed never exceeds 0.4 bar (30 cm Hg). If this
value is exceeded, the fuel oil will release gas. Make sure
that the oil hoses are perfectly oil-tight.
9
Clean out the oil tank at suitable intervals.
9
The oil feed line must be suitable for the flow rate demand-
ed by the burner. The oil feed system must also be equipped
with all the necessary safety and control devices required
by applicable legislation and standards. Refer to the table
alongside for oil feed line characteristics.
9
A filter must be installed in the oil feed line.
9
Make sure that the oil return line is not kinked or blocked
before starting up the boiler. Excessive back-pressure can
cause the pump seal to fail.