Initial Lighting - Glow-worm Ultrapower 100sxi Installation And Servicing

4. Fully open the taps on the filling loop to fill the
heating system to a pressure of 1.0bar. Close the filling
taps. If the domestic cold water is below 10
frost protection may operate and a F1 will be displayed,
clear by pressing "Reset", you may have to repeat this
process until the pressure is 1 bar.
5. Vent all air from the system and vent the CH pump via the
front screw - repeat step 4 as necessary until the system
is full and all the air has been removed.
6. Make sure that the automatic air vent works correctly and
that the black cap is loosely fitted to allow air to escape.
7. To comply with the water regulations the flexible hose
must be disconnected from the double check inlet valve
- undo the nut and pull the flexible hose from the valve.

11.4 Initial Lighting

NOTE: The combustion for this appliance has been checked,
adjusted and preset at the factory for operation on natural gas
(G20) as defined on the appliance data label.
No measurement of the combustion is necessary.
Having checked :
● the appliance has been installed in accordance with the
instructions.
● the integrity of the flue system and flue seals.
● the integrity of the appliance combustion circuit and
relevant seals.
● that all internal/external controls are calling for heat.
● the gas service isolation valve, diagram 11.1, is open.
LPG Conversion:
See section 11.11.
As an option, a chargeable boiler performance and function
service can be provided by Glow-worm Service by calling
telephone No. 01773 828100.
Light the appliance by following the procedure below:
Refer to diagram 11.4 and repeatedly press the "MODE"
button
until the and symbols are displayed.
The hot water tank has priority over central heating.
°C
The appliance will enter a self-checking routine then the
bar
°C
ignition sequence will commence.
The digital display will show the tank temperature setting in
bar
hot water mode.
If the burner fails to light the fan will stop. Initially this may be
due to air in the gas supply line. The boiler will automatically
have five attempts at ignition.
If the burner fails to ignite the display will show F1.
Depress the "reset" button on the fascia to clear the display
and repeat the ignition sequence.
When the tank is full (and after a short pump overrun period)
a central heating demand will be initiated.
Once the system has been purged of air set the hot water
to the desired temperature by using the hot water "+" and "-"
buttons.
Open a hot water tap, check that hot water is available and
then close the hot water tap.
Set the central heating water temperature to the desired
temperature by using the central heating "+" and "-" buttons.
28
11 Commissioning
The appliance will then continue to fire in central heating
mode until the user controls are satisfied or there is another
demand made for hot water.
C the tank
O
NOTE: After ignition in central heating demand the boiler will
remain at minimum power for one minute before going to full
rate
DOUBLE
CHECK
INLET
VALVE
TOGGLE BUTTON
MODE and PROG
QUICK
FILLING
RELEASE
TAP "B"
NUT
FILLING
LOOP
VALVE
FILLING
TAP "A"
Ext
MODE
PROG
LCD RESET
DISPLAY BUTTON
SYMBOLS DISPLAYED ON THE LCD AND DESCRIPTIONS
Will be displayed when domestic hot
Central Heating Function
Eco
water temperature is less than 50
Ext Glow-worm control (Optional)
Domestic Hot Water Function
Central Heating
Min burner display
Timed Mode
Appliance OFF
Max burner display
Temperature
System Pressure
Programmer
Outdoor sensor (if fitted)
Adjustment Mode
FILLING
LOOP
FLEXIBLE
HOSE
QUICK
RELEASE
NUT
Diagram 11.3
DHW CH
TEMPERATURE
ADJUSTMENT
o
C
Diagram 11.4