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To set the burner pressure, operate the boiler for 10 minutes,
remove the multifunctional control cover, if not already removed,
as above. Adjust the gas burner pressure by screw "F" until the
required pressure is obtained, see the relevant Table 1 for
setting pressures.
Stick the self adhesive arrow from the loose items pack onto the
appropriate space beneath the "Min" or "Max" column on the
data label.
Should any doubt exist about the gas rate this should be
checked at the meter using a stop watch to time at least a cubic
foot of gas consumption.
Replace the multifunctional control cover.
BURNER PIN
AND HOLE
LOCATION
BURNER LOCATION
G
A ELECTRICAL CONTROL BOX
B THERMOSTAT CONTROL KNOB
C GAS SERVICE COCK(SHOWN IN OFF POSITION)
D MULTI-FUNCTIONAL CONTROL
E PRESSURE TEST NIPPLE
F GAS BURNER TEST NIPPLE
G PIEZO UNIT BUTTON
H THERMOCOUPLE PIPE
K CONTROL BUTTON (GAS)
M CASE SECURING SCREW
N PILOT BURNER PRESSURE SCREW
P FLUE BLOCKAGE SAFETY DEVICE
RESET BUTTON
BOILER COMPONENTS
221787B
Supplied By www.heating spares.co Tel. 0161 620 6677
6 Commissioning
COMBUSTION
CHAMBER
SHIELD
BURNER
Diagram 6.1
B
A
M
H
Check the operation of the flame failure device, with the burner
alight, as follows:- Slide the control button "K" inwards and
release, the main burner and pilot will go out. Check that the
flame failure device has operated, indicated by a "click", within
60 seconds, from the valve.
incorporates a safety device. Do not attempt to relight until it has
reset, in about 3 minutes.
Remove the pressure gauge and refit the screw "E", making
sure that a gas tight seal is made.
Set the thermostat knob "B" to "O" (the off position) and relight
the pilot, as above.
10 to 14mm
SPARK GAP
AND FLAME DIMENSION
P
C
K
N
INSET VIEW
With multi-functional control valve
cover removed for clarity
12
The multifunctional control
SPARK
ELECTRODE
HEX
PILOT BURNER
SECURING
NUT
2.5 TO 5.0mm
(
1
/
in) (
3
/
in)
8
16
Diagram 6.3
D
E
F
Diagram 6.2
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