VOKERA Linea Installation & Servicing Instructions Manual - page 40
10.3 CONVERTING THE APPLIANCE GAS TYPE
To convert the appliance to another gas type it is necessary to
change the burner injector and adjust the gas valve. It is also
necessary to enter the appliance engineer mode and change the fan
speed at the maximum output.
- To change the injector see 6.12.1
- To change parameters see 7.3.1
- To adjust CO
2
value see 7.4.1-2
10.4 GAS SUPPLY
The gas supply must be connected to the appliance by a competent
LPG installer and must be of sufficient size to supply the appliance
at its maximum output. An existing supply must be checked to ensure
that it is of adequate size to deal with the maximum rated input of this
and any other appliances that it serves.
10.5 GAS SUPPLY INSTALLATION
The entire installation including the meter must be purged and
checked for gas tightness.
10.6 ADJUSTING THE GAS VALVE
THE GAS VALVE MUST BE SET-UP OR ADJUSTED WITH THE
AID OF A PROPERLY CALIBRATED FLUE GAS ANALYSER.
Isolate the appliance from the electrical supply and remove the
appliance casing as described in 4.7.1. Set the flue gas analyser to
read CO
2
and insert the probe into the flue analysis test point (see
fig. 1). Restore the electrical supply to the boiler and switch off the
boiler. Push and
buttons at the same time for 3 seconds to enter
the adjusting menu. The display shows “CodE”. Select the adjusting
password by turning the encoder and confirm it by pushing ENTER
button.
10.6.1 MAXIMUM SETTING
Select the HH parameter by turning the encoder and confirm it by
pushing ENTER button. The boiler starts at the maximum power, the
CO
2
reading should be as shown in the table above.
If the CO
2
reading is correct, press the ENTER button to exit the
maximum setting. If the CO
2
reading is incorrect, the maximum gas
pressure must be adjusted as follows:
- using a suitable screwdriver, very slowly turn the maximum
adjustment screw (see fig. 42) – clockwise to decrease, counter
clockwise to increase – until the correct value is displayed on the CO
2
analyser (allow time for the analyser to stabilise).
IMPORTANT
A GAS TIGHTNESS CHECK MUST BE CARRIED OUT.
10.6.2 MINIMUM SETTING
Select the LL parameter by turning the encoder and confirm it by
pushing ENTER button. The boiler starts at the minimum power, the
CO
2
reading should be as shown in the table above.
If the CO
2
reading is correct, press the ENTER button to exit the
minimum setting. If the CO
2
reading is incorrect, the minimum gas
pressure must be adjusted as follows:
- using a suitable screwdriver, very slowly turn the minimum
adjustment screw (see fig. 42) – clockwise to increase, counter
clockwise to decrease – until the correct value is displayed on the
CO
2
analyser (allow time for the analyser to stabilise).
- using the procedure detailed in 9.6.1, check that the maximum
setting correct value is still being obtained. If not, repeat the above
procedure.
10.1 RELATED DOCUMENTS
BS 6798
BS 5449
BS 5446
BS 5440
BS 5482
PART 1
PART 1
PART 1
INSTALLATION OF BOILERS OF RATED INPUT NOT EXCEEDING 60 kW
FORCED CIRCULATION HOT WATER SYSTEMS
INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES
FLUES
DOMESTIC BUTANE & PROPANE GAS BURNERS IN PERMAMENT DWELLINGS
10.2 TECHNICAL DATA
Gas Pressures
Linea ONE
Inlet pressure
37.0 mbar
Maximum gas rate
2.33 kg/h
Minimum gas rate
0.54 kg/h
Injector size (quantity)
1 x Ø 5.0 mm
Fan speed @ max output (rpm) DHW
6.300
Fan speed @ max output (rpm) HTG
5.000
Fan speed @ min output (rpm)
1.400
Flue details (coaxial)
Maximum horizontal flue length (60/100mm)
3.85
Maximum vertical flue length (60/100mm)
4.85
Flue details (twin pipes)
Maximum horizontal flue length (80mm + 80mm)
30 + 30
Maximum vertical flue length (80mm + 80mm)
30+30
Efficiency
SEDBUK (%)
A
Emissions
NOx (max-min)
80 - 53 mg/kWh
CO (max-min)
215 - 32 mg/kWh
CO
2
(max-min)
10,5 - 10,5 %
CO/CO
2
ratio (max)
0,002 to 1
CO/CO
2
ratio (min)
0,0003 to 1
SECTION 10 - LPG INSTRUCTIONS