SERVICING AND MAINTENANCE INSTRUCTIONS
_
CONVERSION OF GAS TYPE
6
11
9
7
8
10
3
8
1
4
3
5
7
9
2
6
Conversion of the boiler from
natural gas to LPG and viceversa
must be performed by qualified
personnel only. Conversion is
performed as follows:
a.
Isolate the boiler from mains
electricity supply
b.
Close
the boiler gas service
cock
c.
replace jets on the main
burner as follows:
Fig. 1
•
undo the gas pipe 6 (fig.1)
from the burner manifold
using a size 24 spanner;
•
separate the burner
manifold
7
from the burner
ramps
8
by undoing the 4
screws
3
using a Philips
screwdriver;
•
fit new jets
9
to the burner
for the type of gas the boiler
will run using a no. 7
spanner. Jets must be fitted
with new gaskets;
•
reassemble the entire
burner unit. Use the soapy water method to check for gas leaks each time gas connections are dismantled and
reassembled;
LEGEND
:
1.
GAS VALVE MOD. VK4105A
2.
STABILISER
3.
INLET PRESSURE POINT
4.
OUTLET PRESSURE POINT
5.
ELECTRONIC IGNITION BOARD
6.
GAS PIPE
7.
BURNER MANIFOLD
8.
13 - RAMP GAS BURNER
9.
INJECTORS
10.
IGNITION ELECTRODES
11.
FLAME IONISATION ELECTRODES
d.
Set the maximum and minimum gas pressure according to the new gas.
e.
Replace the gas setting plate that indicates the type of gas and nominal pressure for the boiler. When converting the boiler
to work with a different type of gas, remove the existing plate and replace it with the new one supplied in the conversion
kit.
(G20 - G30/31)
L.P.G.
NATURAL GAS
0
5
10
15
20
25
30
35
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
Gas pressure in mbar
O
u
tput
i
n
k
W
CONDENSING WALL-HUNG BOILER – TG05A062.A0505
32
