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9. SECTION - LPG INSTRUCTIONS
BS 6798
INSTALLATION OF BOILERS OF RATED INPUT NOT EXCEEDING 60 kW
BS EN 12828
DESIGN FOR WATER-BASED HEATING SYSTEMS
BS 5446
INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES
BS 5440
PARTS 1 & 2 FLUES & VENTILATION
BS 6891
SPECIFICATION FOR THE INSTALLATION AND MAINTENANCE OF LOW PRESSURE
GAS INSTALLATION PIPEWORK OF UP TO 35 mm
Gas Pressures
UNICA MAX 35C
UNICA MAX 40C
Inlet pressure
37.0 mbar
37.0 mbar
Maximum gas rate (CH)
2.48 (kg/h)
2.48 (kg/h)
Maximum gas rate (DHW)
2.69 (kg/h)
3.11 (kg/h)
Minimum gas rate (CH)
0.54 (kg/h)
0.54 (kg/h)
Minimum gas rate (DHW)
0.54 (kg/h)
0.54 (kg/h)
Injector size (mm)
1 x Ø 5.2 mm
1 x Ø 5.2 mm
Number of fan rotations with slow ignition
5,500 (rpm)
5,500 (rpm)
Maximum number of heating fan rotations
7,200 (rpm)
7,200 (rpm)
Maximum number of DHW fan rotations
7,800 (rpm)
8,900 (rpm)
Minimum number of heating fan rotations
1,900 (rpm)
1,900 (rpm)
Minimum number of DHW fan rotations
1,900 (rpm)
1,900 (rpm)
Emissions
UNICA MAX 35C
UNICA MAX 40C
NOx (max-min)
50 - 40 p.p.m.
50 - 40 p.p.m.
CO (max-min)
160 - 10 p.p.m.
160 - 10 p.p.m.
CO
2
(max-min) *
10.0 - 10.0 %
10.0 - 10.0 %
(*) CO
2
tolerance= +0.6% -1%
9.3 APPLIANCE RE-CONFIGURATION FOR
LPG
WARNING!
The gas supply to the appliance must remain turned OFF
until the following procedure has been completed.
1. Select STATE
BOILER.
2. Set the SERVICE password
3. Select TECHNICAL
COMBUSTION MONITORING
GAS TYPE
LPG
ERROR HISTORY
EXHAUST PROBE RESET
AIR PURGING CYCLE
PARAMETERS
COMBUSTION MONITORING
SERVICE
TECHNICAL
BOILER TYPE
COMBUSTION OFFSET
GAS TYPE
SERVICE
COMBUSTION MONITORING
NATURAL GAS
LPG
GAS TYPE
4. Use the ‘back’ button to return to the ‘TECHNICAL’ menu
and select ‘COMBUSTION MONITORING’.
5. Using the data in section 9.2, adjust the fan speed settings
to the values indicated in section 9.2 – pressing the select
button to confirm each change.
6. Press and hold the ‘back’ button for 2-seconds to exit the
‘Service’ parameters menu.
7. Carry out a combustion check – as detailed in section 6.12
– using the LPG values as indicated in section 9.2 above.
NOTE:
the appliance gas valve is factory set and therefore
non-adjustable. Do not attempt to adjust or interfere with the
settings of the gas valve, as to do so, will cause the appliance
to malfunction and may lead to serious damage.
The boiler DOES NOT require additional adjustments.
b
The boiler may only be converted by qualified staff.
b
After conversion apply the LPG label to the
appliance data plate (LPG label is contained within
the documentation pack).
9.1 RELATED DOCUMENTS
9.2 TECHNICAL DATA
