Glow-worm Flexicom cx - Manual (Page 25)

0020107232_03 - 12/14 - Glow-worm
INSTALLATION
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10.4 Electrical Cartridge Securing
With the gas service isolation valve closed and with no demand
from any external controls, fit the electrical cartridge into the
interface housing, see diagram 10.4.
Secure with the two cartridge retaining screws provided in the
cartridge body.
Diagram 10.3
13369
Diagram 10.4
13922
11 Commissioning
IMPORTANT: If the appliance is to be left out of operation after
initial commissioning, ensure all system cleansing and inhibition
has been carried out fully and that power is left on to the
appliance. This is to ensure that there is no risk of flammable
gas collecting in the system due to corrosion.
At the time of commissioning, complete all relevant sections of
the Benchmark Checklist located in the inside back pages of
this document.
11.1 Pre-filling the Heating Circuit
Do Not operate the boiler without water.
The commissioning should be carried out by a competent
person approved at the time by the Health and Safety
Executive and in accordance with the current issue of BS6798.
Make sure that the system has been thoroughly flushed out with
cold water and that all cleanser if used has been removed.
With the gas service isolation valve closed, with no demand
from any external controls and the power supply to the boiler
switched off.
Test for gas tightness and purge air from the gas supply.
Refer to diagram 11.1
1. Ensure that the flexible hose is connected to the double
check valve by tightening the knurled nut marked ‘E’.
2. Ensure that the water isolation valves are securely
tightened onto the jig blanking plugs.
3. Open the Central Heating Flow and Return isolation valves
marked ‘A’ using a screwdriver or a 4mm allen key - slot
in line with the axis of the isolation valves (shown closed in
diagram).
4. Ensure ALL cold water taps are shut off then open the
Domestic Cold Water isolation valve marked ‘B’ using a
screwdriver or a 3mm allen key - slot in line with the axis of
the isolation valve (shown closed in diagram).
NOTE: A manometer kit accessory, part no. 0020016995 is
available to monitor system pressure during filling, this should
be attached to the drain point connection marked ‘C’ and the
drain point opened to enable a reading of the system pressure
to be taken. If the manometer kit is not used caution should be
taken not to overpressurise the system.
5. Open the two filling taps marked ‘D’ by rotating them
through 90° to fill the heating system to a pressure of
1.0bar. Close the two filling taps.
6. Vent all air from the system - repeat step 5 as neccessary
until the system is full and all the air has been removed.
10.5 Electrical Connections - Testing
Carry out preliminary electrical system checks as below:
1. Test insulation resistance to earth of mains cables.
2. Test the earth continuity and short circuit of cables.
3. Test the polarity of the mains.
NOTE: If you require to test the appliance refer to section 13.