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10 LPG INSTRUCTIONS
9.4
RELATED DOCUMENTS
BS 5440
PARTS 1 & 2
BS 5449
PART 1
BS 5482
PART 1
BS 5546
BS 6798
10.1 TECHNICAL DATA
Gas Pressures
Inlet pressure
Heating maximum gas rate (kg/hr)
Minimum gas rate (kg/hr)
Injector size
CO2 @ maximum output (%)
CO2 @ minimum output (%)
CO @ maximum output (ppm)
CO @ minimum output (ppm)
Slow ignition (rpm)
CH maximum number of fan rotation (rpm)
Mimum number of fan rotation (rpm)
NOTE
Please refer to 3 - 3E and use the appropriate PPE when
carrying out any of the actions or procedures contained within
this section.
10.2 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 ""4.7 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. 44
- refit the gas valve
- reassemble the previously removed components
- power the boiler and open the gas tap.
Adjust the boiler as described in the paragraph ""8.10
Adjustments"".
b
The conversion must be carried out by qualified
personnel.
46
FLUES & VENTILATION REQUIREMENTS
FORCED CIRCULATION OF HOT WATER SYSTEMS
DOMESTIC BUTANE & PROPANE GAS BURNERS IN PERMAMENT DWELLINGS
INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES
INSTALLATION OF BOILERS OF RATED NOT EXCEEDING 60kW
VISION PLUS 20S
37.0 mbar
1.55
0.39
3.8 mm
10.0
10.0
160
10
5.500
6.000
2.000
b
10.3 COMPLETION
On completion of the combustion analysis check and/or any
gas valve adjustment, refit the plug (see paragraph ""8.4.1
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.
B
A
VISION PLUS 25S
VISION PLUS 30S
37.0 mbar
37.0 mbar
1.94
2.33
0.54
0.54
4.5 mm
4.5 mm
10.0
10.0
10.0
10.0
140
160
20
20
5.500
5.500
5.700
6.800
2.000
2.000
After the conversion has been carried out, apply the
new identification label contained in the documentation
envelope.
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