EN • 17
ENGLISHFRANCAISNEDERLANDSESpAñoLITALIANoDEuTSCH
664Y3300
INSTALLATIoN
PROPANE CONVERSION
As indicated on the data plate, the boiler is factory preset to
operate with G20 gas and G25 gas.
To convert the boiler to G30 gas or G31 type gas, it is necessary
to:
• changetheorifice
• adjusttheCO
2
• adjustparameters13to19oftheMCBA(see MCBA parameters
for the specialist).
The CO
2 parameters to be set are indicated in the technical data
table.
1. Turn off the gas and electric power supplies.
2. Unscrew the three-piece connection (A) of the gas pipe
below the valve.
3. Unplug the gas valve (B).
4. Disassemble the gas valve-venturi assembly (C).
5. Remove the gas valve from the venturi (D) and change the
orifice (F).
6. Reassemble the gas valve-venturi assembly, following the
same procedure in reverse order.
2
50
75
120
G20
— — 8,6
G25
— — —
G30
6,0 6,8 6,7
G31
6,0 6,8 6,7
Prestige Solo 50 Prestige Solo 75 Prestige Solo 120
G20 - G25 G30 - G31 G20 - G25 G30 - G31 G20 - G25 G30 - G31
CO
2 [max power]
% CO
2
9,4 10,8 9,4 10,8 9,0 10,3
Maximum fan speed
rpm
5600 5300 6500 6500 6000 5600
CO
2 [min power]
% CO
2
9,3 10,4 9,3 10,4 8,5 - 9,5 10 - 10,5
Minimum fan speed
rpm
1700 1700 1700 1700 1500 2000
CO2 [max power]
% CO
2
9,2 10,5 9,2 10,5 8,8 10,1
CO
2 [min power]
% CO
2
9,1 10,1 9,1 10,1 8,3 - 9,2 10 - 10,5
D
A
B
C
EF
D
A
F
C
E
B
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