Supplied By www.heating spares.co Tel. 0161 620 6677
41
SECTION 10
L.P.G. INSTRUCTIONS
10.3
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.
10.4
GAS SUPPLY INSTALLATION
The entire installation including the meter, must
be purged and checked for gas soundness.
10.5
ADJUSTING THE GAS VALVE
The gas valve must be set-up or adjusted with
the aid of a properly calibrated flue gas analyser.
Remove the appliance casing as detailed in 4.8.1. Unclip
and remove the air chamber cover. Set the flue gas
analyser to read CO
2
and insert the probe into the flue
analysis test point (see fig.1). Using the procedure as
detailed in 7.3 & 7.3.5 respectively, enter the appliance
engineer mode and set the fan speed to minimum.
10.5.1 MINIMUM SETTING
With the boiler operating at minimum output the
CO
2
reading should be 9.8% (+/- 0.2%). If the CO
2
reading is correct, proceed to 10.5.2. 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. 34) –
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 7.3.5, change
the fan speed momentarily from minimum to
maximum, then back to minimum.
●
Check that the correct value is still being
obtained. If not, repeat the above procedure.
10.5.2 MAXIMUM SETTING
The maximum setting must only be checked and/or
adjusted after the correct minimum setting has been
verified. Using the procedure detailed in 7.3.5, change
the fan speed from minimum to maximum.
With the boiler operating at maximum output the
CO
2
reading should be 9.8% (+/- 0.2%). If the CO
2
reading is correct, press the RESET button to exit
For details of converting boilers to LPG please refer to the instructions supplied with the relevant conversion kit.
the appliance engineer mode. 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. 34) – 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 7.3.5, change
the fan speed momentarily from maximum to
minimum, then back to maximum.
●
Check that the correct value is still being
obtained. If not, repeat the above procedure.
●
Press the RESET button to exit the appliance
engineer mode.
Remove the analyser test probe from the analysis
test point and refit cap. Refit the air chamber
cover. Refit appliance casing.
NOTE
You should ensure that all radiators or heat emitters
are fully open during the above procedures. This
will ensure that the fan speed (output) of the boiler
is not compromised due to a high flow temperature.
10.6
RANGE RATING
The output of the boiler is automatically adjusted by a
continuous air/gas modulation system. The system is
controlled by the NTC thermistors (flow & return
temperature sensors) which ensures stability of
temperature irrespective of load conditions. However
the appliance also has a range rating facility which can
be used to limit the max. output - to central heating - if
required. Please refer to 7.3.1 & fig. 37 for more details.
10.1 TECHNICAL DATA
10.2 RELATED DOCUMENTS
BS 6798
BS 5449
BS 5546
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
Inlet pressure
Gas rate
Injector size
CO
2
level (cover off)
Fan speed (RPM)
Soft-light
NOx
CO
CO
2
CO/CO
2
ratio
Maximum
37 mbar
4,08 l/per hr.
Single injector with six 2.3mm holes
9,80%
5.500
3.025
30 ppm
50 ppm
10% (cover on)
0.0005 to 1
Minimum
37 mbar
1,19 l/per hr.
Single injector with six 2.3mm holes
9,80%
1.700
3.025
20 ppm
20 ppm
10% (cover on)
0.0005 to 1
Fig. 37
0
5
10
15
20
25
30
1500
2000
2500
3000
3500
4000
4500
5000
5500
Fan speed in RPM
kW
Output BTU/H
102,360
68,240
17,060
0
51,180
34,120
85,300
50
°
C flow & 30
°
C
return temperature
80
°
C flow & 60
°
C
return temperature