Glow-worm Flexicom sx - Manual (Page 25)

0020107231_04 - 12/14 - Glow-worm
INSTALLATION
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DRAIN POINTS
A
B
A
PRESSURE
TEST POINT
A - Central Heating Isolation Valve
B - Gas Service Isolation Valve
13944
Diagram 11.2
JIG BLANKING
PLUGS
13074
Diagram 11.1
Check system soundness. Close the drain point.
To comply with the water regulations the remotely installed
filling loop connection must be removed.
11.2 Filling the System and Boiler
1. Open the two central heating isolating valves marked ‘A’
so that the slots are in line with the length of the valve
(shown closed in diagram 11.2).
2. Turn the mains electricity supply on to the appliance.
Refer to diagram 11.3.
Set the Central Heating temperature to OFF by pressing
the MODE button on the User Interface until it shows
the symbol
°C
bar
and then pressing the - (minus)
SELECTOR button.
The display will now permanently show system pressure.
3. Pressurise the system until the pressure on the display
reads at least 1.0bar.
4. Vent all air from the system - repeat step 3 as necessary
until the system is full and all the air has been removed.
5. After filling is complete set the Central Heating temperature
to the desired level using the MODE and + (plus)
SELECTOR buttons as described above.
11.3 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 11.2. Check the supply pressure at the
pressure test point is 20mbar.
Commissioning should be carried out by a competent
person approved at the time by the Health and Safety
Executive
11.4 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.
DO NOT operate the boiler without water.
Check that all external controls are calling for heat.
The lighting procedure of the boiler is fully automated.
The digital display will show water temperature in central
heating demand.
● Set the Central heating temperature to the desired