19
INSTALLATION
2.8
Fuel connections
GITRÈ
boilers have their fuel connections at the rear. Fuel supply
hoses must pass through the hole (1) in the back of the boiler
before being connected to the fuel pump. Connect the hoses
provided and pass a length of about 500 mm through the cor-
responding holes on the rear.
B
C
A
A
1
1
DESCRIPTION
GITRÈ
GITRÈ 4
GITRÈ 5
GITRÈ 6
A
50
mm
B
50
mm
C
242
mm
B
C
A
1
1
DESCRIPTION
GITRÈ
GITRÈ 5 B/100
A
107
mm
B
96
mm
C
47
mm
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.
Priming the pump
To prime the oil pump simply start up the burner and check for
a flame.
If the burner enters lockout before any fuel reaches it, wait at
least 20 seconds then turn the function selector to position (II)
"Reset burner" for at least 1 second before returning it to posi-
tion (I). Wait for the burner to complete the entire ignition cycle
again, up to the ignition of the flame.
(*)
m
ax
. 4
m
H
H
(*)
Automatic shut-off device (if fitted). For details of
electrical connections, see the "Automatic shut-off device
(DAI)" section on pages 24 25 and 26
H (m)
L (m)
Øi (8mm)
Øi (10mm)
0
35
100
0,5
30
100
1
25
100
1,5
20
90
2
15
70
3
8
30
3,5
6
20
H = Height difference
L
= Maximum length of suction hose
Øi = Internal diameter of hose
1
Suction port
2
Return
3
By-pass screw
4
Pressure gauge fitting
5
Pressure adjuster screw
6
Vacuum gauge fitting
7
Valve
8
Auxiliary pressure measurement fitting
7
6 5
4
3
2
1
8
