Glow-worm Flexicom cx - Manual (Page 26)

0020107232_03 - 12/14 - Glow-worm
INSTALLATION
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13895
Open all hot water taps in turn and close them when water
flows. Check for water soundness of the complete domestic
water system.
The water flow rate is restricted by a restrictor factory fitted to
the boiler.
11.4 Re-pressurising System
1. Ensure that the flexible hose is connected to the double
check valve by tightening the knurled nut marked ‘E’.
2. Open the two filling taps marked ‘D’ by rotating them
through 90 O to fill the heating system to a pressure of
1.0bar. Close the two filling taps marked ‘D’.
3. Vent all air from the system - repeat step 2 as neccessary
until the system is full and all the air has been removed.
4. To comply with the water regulations the flexible hose must
be disconnected from the double check valve - undo the
knurled nut marked ‘E’ and pull the flexible hose from the
double check valve.
11.5 Gas Supply
The gas valve is factory set for natural gas (G20) and should
need no adjustment. Turn on the gas supply at the isolation
valve, see diagram 11.1. Check the supply pressure at the
pressure test point is 20mbar.
Commissioning should only be carried out by a competent
person approved at the time by the Health and Safety
Executive.
11.6 Initial Lighting
NOTE: Ensure that initial lighting of the appliance takes
place with the front casing door removed and the control
box lowered. Initially run the appliance pump to ensure all
air has been vented from the system (observe the
operation of the auto air vent, if possible).
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.
Do not adjust the Gas/Air ratio valve.
As an option, a chargeable boiler performance and function
service can be provided by Glow-worm Service by calling
telephone No. 01773 828100.
It is a requirement to measure and record the CO value and
CO/CO2 ratio. Guidance on measuring the values can be
documented in the Benchmark log book at the very back of this
manual.
Diagram 11.1
7. Close the Domestic Cold Water isolation valve marked
‘B’ using a screwdriver or a 3mm allen key (shown closed
in diagram).
8. Close the Central Heating Flow and Return isolation
valves marked ‘A’ using a screwdriver or a 4mm allen key
(shown closed in diagram). If the manometer kit was used,
close drain point marked ‘C’ and remove the manometer.
9. To comply with the water regulations the flexible hose
must be disconnected from the double check valve - undo
the knurled nut marked ‘E’ and pull the flexible hose from
the double check valve.
11.2 Filling the System and Boiler
1. Ensure that the flexible hose is connected to the double
check valve by tightening the knurled nut marked ‘E’.
2. Open the Central Heating Flow and Return isolation valves
marked ‘B’ using a screwdriver or a 4mm allen key - slot
in line with the axis of the isolation valve (shown closed in
diagram).
3. Open the Domestic Cold Water cock marked ‘B’ using a
screwdriver or a 3mm allen key - slot in line with the axis
of the isolation valve (shown closed in diagram).
4. Switch on the appliance, refer to diagram 11.2.
Set the Central Heating temperature and the Domestic Hot
Water temperature to OFF by pressing the MODE button
on the User Interface until it shows the appropriate symbol
°C
bar
or
°C
bar
and then pressing the - (minus) SELECTOR
button.
The display will now permanently show system pressure.
5. Open the two filling taps marked ‘D’ by rotating them
through 90 O to fill the heating system to a pressure of
1.0bar. Close the two filling taps marked ‘D’.
6. Vent all air from the system - repeat step 5 as neccessary
until the system is full and all the air has been removed.
7. After filling is complete set the Central Heating
temperature and the Domestic Hot Water temperature
to the desired level using the MODE and + (plus)
SELECTOR buttons as described above.
8. To comply with the water regulations the flexible hose
must be disconnected from the double check valve - undo
the knurled nut marked ‘E’ and pull the flexible hose from
the double check valve.
11.3 Filling Domestic Water Circuit
Fully open any valves in the domestic water supply to the boiler.
Open the domestic water isolation valve, slot in line with the
length of the valve (shown closed in diagram).