40
Compact
10.1
TECHNICAL DATA
SECTION 10
L.P.G. INSTRUCTIONS
10.3
GAS SUPPLY
The gas supply must be connected to the appliance
by a competent L.P.G. installer and must be of
sufficient size to supply the appliance at its maxi-
mum 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
BURNER PRESSURES
Burner pressure settings should be checked and/or
adjusted whenever the appliance is being serviced,
commissioned, or the appliance gas type has
changed.
NOTE
Ensure the jumper tag has been fitted to the control
PCB (JP3).
The procedure for setting or adjusting must be
carried out in the following order:
●
set the maximum DHW gas pressure.
●
set the minimum DHW gas pressure.
●
set the maximum heating gas pressure.
●
set the minimum heating gas pressure.
10.5.1 SETTING THE MAXIMUM DHW GAS PRESSURE
(fig. 15 & 23)
Isolate the appliance from the electrical supply,
remove the appliance casing as described in 4.7.1.
●
Attach a manometer to the outlet test point of the
gas valve.
●
Remove the protective cover from the gas valve
modulator, and disconnect the compensation tube
from the gas valve.
●
Fully open a hot water outlet (preferably the bath tap).
●
Rotate the DHW temperature selector to
maximum.
●
Restore the electrical supply to the appliance.
●
The appliance will now light and after 7-10 seconds,
the burner will be at full power.
●
Observe the manometer, the reading should be
36.0 mbar.
●
If the reading is correct, proceed to section 10.5.2
●
If the reading is incorrect, turn the maximum
adjustment screw (fig. 15) clockwise to increase
the pressure, or anti-clockwise to reduce the
pressure.
●
Proceed to section 10.5.2.
BURNER PRESSURES
COMPACT
24
COMPACT
28
Inlet pressure
37 mbar
37 mbar
Gas rate
2,04 Kg/h
2,41 Kg/h
Injectot size
12 x 0.77
14 x 0.77
Maximum burner pressure DHW & Heating
36 mbar
36 mbar
Minimum burner pressure DHW
5.1 mbar
4.8 mbar
Minimum burner pressure Heating
6.5 mbar
6.5 mbar
Jumper tag for LPG
Inserted across JP3
Inserted across JP3
10.5.2 SETTING THE MINIMUM DHW GAS PRESSURE
(fig. 15 & 23)
●
After carrying out section 10.5.1, disconnect one
of the black wires attached to the modulator coil.
●
The burner will now operate at minimum power.
●
Observe the manometer, the reading for Compact
24 should be 5.1 mbar, for Compact 28 the
reading should be 4.8 mbar.
●
If the reading is correct, proceed to section 10.5.3.
●
If the reading is incorrect, turn the minimum
adjustment screw (fig. 15) clockwise to increase
the pressure, or anti-clockwise to reduce the
pressure.
●
Proceed to section 10.5.3.
10.5.3 SETTING THE MAXIMUM AND MINIMUM
CENTRAL HEATING BURNER PRESSURES
●
Isolate the appliance from the electrical supply.
●
Close the hot water outlet.
●
Re-attach the black wire to the modulator coil.
●
Remove the PCB cover and temporarily attach a
jumper tag to JP2.
●
Rotate the heating temperature selector to
maximum, and ensure all radiators are turned on
with any thermostatic radiator valves set to
maximum.
●
Restore the electrical supply and ensure there is
a call for heat via the appliance time clock and/or
room thermostat.
●
The appliance should now be operating in the
heating mode at maximum output.
●
Observe the manometer, the – maximum – reading
should be 36.0 mbar.
●
Using a small screwdriver, gently rotate the P5
potentiometer if adjustment is necessary.
●
To check and/or adjust the minimum heating gas
pressure, slowly rotate the heating temperature
selector until the burner pressure drops to minimum
(should be 6.5 mbar).
●
Using a small screwdriver, gently rotate the P4
potentiometer if adjustment is necessary.
●
Isolate the appliance from the electrical supply,
and remove the jumper tag from JP2.
●
Remove the manometer from the gas valve and
tighten the outlet test screw.
Refit the PCB cover and appliance casing.
For details of converting appliances to LPG please refer to the instructions supplied with the relevant conversation kit.
BS 6798
INSTALLATION OF BOILERS OF RATED INPUT NOT EXCEEDING 60 Kw
BS 5449
PART 1
FORCED CIRCULATION HOT WATER SYSTEMS
BS 5546
INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES
BS 5440
PART 1
FLUES
BS 5482
PART 1
DOMESTIC BUTANE & PROPANE GAS BURNERS IN PERMAMENT DWELLINGS
10.2
RELATED DOCUMENTS
