8
GAS CONVERSION
35
8.1
Warnings
Procedures to adapt the boiler to the type of
gas available
must be carried out
by a com-
petent and responsible person.
Components used to adapt it to the type of gas
available must be genuine parts only.
8.2
Procedures
1 Check that the gas cock (13 in Fig. 9.3) fitted
under the boiler is turned off and the appliance
is is switched off at the mains isolating spur.
2 Remove the front and side panels of the case
(see the section
General access and emptying
hydraulic circuits
in the service manual).
3 Take off the lid of the sealed chamber.
4 Take the front panel of the combustion
chamber off and remove the burner (29 on
page 11). See section
Ignition and detection
electrodes
in the service manual for detailed in-
structions.
5 Carry out the conversion for the type of gas, re-
placing the burner injectors correctly.
6 Re---assemble the burner, the front panel of the
combustion chamber and the lid of the sealed
chamber.
7 Extract the control panel as explained in the
section 6.10 of this manual.
8 Loosen the screws C and remove the service
panel (Fig. 8.1).
C
Fig. 8.1
9 set correctly the dip---switch ”2” to the correct
position (Fig. 8.2) in accordance with the follo-
wing table.
Gas supply
Position of dip---switch 2
Natural gas
On
L.P.G.
Off
ON
OFF
1 2 3 4
ON
OFF
1
2
3 4
Natural gas
L.P.G.
Fig. 8.2
10 Calibrate the gas valve according to the in-
structions given in the service manual, section
Modulating gas valve --- Adjustment
.
11 Set the correct gas pressure for central heating
output required, see section 7.8 in this manual.
12 Stick on the inside of the left hand side panel
adjacent to the data badge the self---adhesive
label (included with the conversion kit) indicat-
ing the type of gas, and the gas pressures to
which the appliance has been set.
13 Replace the service panel, the front and side
panels of the case.
M
A
IN
TENANCE
