1
2
3
A
B
C
D
4
B
E
COMMISSIONING
INSTALLATION & SERVICING INSTRUCTIONS
30
8 716 115 216b (09.2008)
STARTING THE APPLIANCE
STARTING THE APPLIANCE
A - MASTER SWITCH FOR ON/OFF
B - MAINS ON/OFF INDICATOR + FAULT DIAGNOSTIC LIGHT (BLUE)
C - TEMPERATURE CONTROL
D - BURNER ON INDICATOR LIGHT (GREEN)
E - FAULT RESET BUTTON
F - SERVICE BUTTON
H - NOT USED
K - DISPLAY
L - BOOST BUTTON (SERVICE ONLY)
M- NOT USED
A
D
F
L
C
B
E
H
M
K
IMPORTANT: Never run the appliance
when the appliance or system is empty
or unpressurised.
Switching the appliance on/off:
1
Turn on mains power supply.
Turn on any external controls.
Set the thermostatic radiator controls to maximum.
Set the clock/programmer to continuously ON and
the room thermostat to maximum temperature.
2 Press button (A) and the power on indicator (B)
illuminates blue.
3
Turn the temperature control (C) to maximum.
The burner on indicator (D) illuminates green when
the burner has lit.
NOTE: The boiler runs for 15 minutes at minimum heating
output to fill the condensate trap. This occurs
every time the mains supply has been interrupted.
4
If the boiler fails to light, the blue power indicator
(B) and reset button (E) will flash alternately.
To reset the boiler, press and hold the reset button
(E) for 2 seconds.
CAUTION: DO NOT PRESS THE POWER
INDICATOR (B) TO RESET THE BOILER.
THE COMBUSTION FOR THE APPLIANCE IS
FACTORY SET.
NO ADJUSTMENT IS REQUIRED IF THE GAS INLET
PRESSURE IS CORRECT.
CHECKING THE GAS INLET PRESSURE:
The inlet pressure to the appliance must be checked
using the following procedure:
SETTING THE BOILER TO MAXIMUM:
Press boost button for ten seconds and set
temperature to maximum.
The boost button will illuminate continually.
MEASURING THE INLET PRESSURE:
Slacken the screw in the inlet pressure test point
and connect a manometer.
Measure the pressure with the boiler running at
maximum.
Check the gas supply working pressure at the gas
valve inlet point:
N.G. 17 - 19 mbar (18 mbar nominal)
L.P.G. 35 - 39 mbar (37 mbar nominal)
The gas rate should be measured at the gas meter
after 10 minutes operation at maximum. See
Technical Data section at the front of this manual.
(LPG) Where a gas meter is NOT available the
CO/CO
2 must be checked to the units shown in
“Setting air/gas ratio”
Ensure inlet pressure is satisfactory with all other
gas appliances working.
Replace controls cover.
NOTE: This boiler is designed with a differential of
20°C across the heating system.
IMPORTANT: Do not continue
commissioning until the correct gas inlet
pressure is achieved.
If pressure is satisfactory press the boost button
again and the boiler will return to normal operation.
If left in service mode the control will return to normal
operation after 15 minutes.
Reseal the screw in the gas inlet pressure test
point.
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