47
10.1 RELATED DOCUMENTS
10 LPG INSTRUCTIONS
10.2 TECHNICAL DATA
Gas Pressures
VISION PLUS 25C
VISION PLUS 30C
Inlet pressure
37.0 mbar
37.0 mbar
Heating maximum gas rate (kg/hr)
1.55
1.94
DHW maximum gas rate (kg/hr)
1.94
2.45
Minimum gas rate (kg/hr)
0.39
0.47
Injector size
3.8 mm
3.9 mm
Silencer flange
27 mm (fitted)
29 mm
CO2 @ maximum output (%)
10.5
10.5
CO2 @ minimum output (%)
10.5
10.5
CO @ maximum output (ppm)
190
250
CO @ minimum output (ppm)
20
25
Slow ignition (rpm)
4.000
4.000
CH maximum number of fan rotation (rpm)
4.900
5.200
DHW maximum number of fan rotation (rpm) 6.100
6.700
Mimum number of fan rotation (rpm)
1.400
1.400
BS 5440
PARTS 1 & 2
FLUES & VENTILATION REQUIREMENTS
BS 5449
PART 1
FORCED CIRCULATION OF HOT WATER SYSTEMS
BS 5482
PART 1
DOMESTIC BUTANE & PROPANE GAS BURNERS IN PERMAMENT DWELLINGS
BS 5546
INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES
BS 6798
INSTALLATION OF BOILERS OF RATED NOT EXCEEDING 60kW
NOTE
Please refer to 3 - 3E and use the appropriate PPE when
carrying out any of the actions or procedures contained within
this section.
10.3 GAS CONVERSION
Conversion from a family gas to other family gas can be
performed easily also when the boiler is installed.
This operation must be carried out by professionally qualified
personnel.
The boiler is delivered to operate with methane gas (
G20
).
To convert the boiler to propane gas (
G31
) use the specific
accessory kits.
For disassembly, refer to the instructions below:
- remove the power supply to the boiler and close the gas tap
- remove the casing as indicated in paragraph “4.5 CASING
REMOVAL”
- unhook and rotate the dashboard forward
- remove the gas valve (
A
)
- remove the nozzle (
B
) contained in the gas valve and repla-
ce it with the one contained in the kit
Fig. 50
A
B
Fig. 51
-
refit the gas valve
- remove the silencer from the mixer
- open the two half-shells by removing the 2 fixing screws (
C
)
- replace the air diaphragm (
D
) contained in the silencer reas-
semble the previously removed components
- power the boiler and open the gas tap.
Adjust the boiler as described in the paragraph “8.9
Adjustments”.
b
The conversion must be carried out by qualified
personnel.
b
After the conversion has been carried out, apply the
new identification label contained in the documentation
envelope.
10.4 COMPLETION
On completion of the combustion analysis check and/or any
gas valve adjustment, refit the plug (see paragraph “8.3.1
Combustion check”). Remove the test probe from the test point
and refit the sealing screw/s and/or cap.
IMPORTANT
A GAS TIGHTNESS CHECK MUST BE CARRIED OUT IF ANY
GAS CARRYING COMPONENTS HAVE BEEN REMOVED,
REPLACED OR DISTURBED.
ATTENTION
Gas type and appliance output
must be set
according to the
specific appliance specification. Vokèra accepts no responsi
-
bility if the gas type is not correctly adjusted according to the
respective appliance specification as detailed on the appliance
data badge.
C
D