EN • 28
664Y4200 • F
E
N
FR
R
U
P
L
DE
IT
ES
N
L
prestige 18
prestige 32
setting with front panel closed
g20 - g25
g30 - g31
g20 - g25
g30 - g31
Boiler’s maximum power
% co
2
8.9
10.5
8.9
10.5
Maximum fan speed
rpm
6000
5700
6250
6200
Boiler’s minimum power
% co
2
8.6
10.2
8.6
10
Minimum fan speed
rpm
1100
1500
1100
1500
=
Minimum load
%
0
8
0
8
=
Maximum load (central heating)
%
100
94
100
100
setting with front panel open
Boiler’s maximum power
% co
2
8.7
10.3
8.7
10.3
Boiler’s minimum power
% co
2
8.4
10
8.4
9.8
Cover plate
prestige 18
prestige 32
g20
5.2
—
g25
5.2
—
g30
3.4
5.2
g31
3.4
5.2
C
D
B
A
F
E
InstallatIon
propane conVersIon
As indicated on the data plate, the boiler is factory preset to operate
with G20 gas, G25 gas, G30 gas or G31 gas.
To convert the boiler to another type of gas, it is necessary to:
• change the orifice
• adjust the CO
2
• adjust the parameters as indicated in the chart below.
The CO
2
parameters to be set are indicated in the technical data table.
CHANgINg THE ORIFICE:
1. Turn off the gas and electric power supplies.
2. Unscrew the gas pipe coupling (A) below the valve.
3. Unplug the gas valve (B).
4. Dismantle the gas valve-venturi assembly (C).
5. Remove the gas valve from the venturi (D) and change the orifice (F).
Important: position the orifice seal(s) correctly (E).
6. Reassemble the gas valve-venturi assembly, following the same procedure
in reverse order.
7. Stick the yellow (617g0152) “Propane” self adhesive sticker on the
gas valve (B).
The conversion of natural gas to propane or the
reverse is not authorized in certain countries
such as Belgium.
Refer to the gas categories chart.
Before carrying out the CO
2
setting, it is important to modify
the fan speed parameters as indicated in the table below.
