Starting The Appliance - Worcester GREENSTAR HIGHFLOW 440CDi Instruction Manual

A
D
F
L
C
B
A - MASTER SWITCH FOR ON/OFF
B - MAINS ON/OFF INDICATOR + FAULT DIAGNOSTIC LIGHT
C - CENTRAL HEATING TEMPERATURE CONTROL
D - BURNER ON INDICATOR LIGHT (GREEN)
E - FAULT RESET BUTTON
F - SERVICE BUTTON
G - DOMESTIC HOT WATER TEMPERATURE CONTROL
H - ECO BUTTON (DOMESTIC HOT WATER PRE-HEAT ON/OFF)
I - SYSTEM PRESSURE GAUGE
J - POSITION FOR OPTIONAL PROGRAMMER
K - DISPLAY
L - CENTRAL HEATING BOOST BUTTON
M - NOT USED
1
2
3
D
4
INSTALLATION & SERVICING INSTRUCTIONS
8 716 115 219c (03.2010)
J
A
B
C
B
K

STARTING THE APPLIANCE

I
IMPORTANT: Never run the appliance
when the appliance or system is empty
E
or unpressurised.
H
Switching the appliance on/off:
1 Turn on mains power supply.
M
Turn on any external controls.
Set the TRV controls to maximum.
Set the clock/programmer to continuously ON
G 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 (L) 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. minimum 17-19 mbar, nominal 18 mbar
L.P.G. 35-39 mbar, nominal 37 mbar
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.
(L.P.G.) where a gas meter is not available the
CO/CO must be checked to units shown in
2
"Setting the air/gas ratio" section.
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.
E 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.
STARTING THE APPLIANCE
35