Glow-worm Flexicom hx - Manual (Page 38)

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11 Electrical Connection
ELECTRICAL
CARTRIDGE
FIXING
SCREWS
Diagram 11.3
11.3 Electrical Cartridge Securing
Close the cartridge and secure with the previously removed
screw.
Push the electrical cartridge into the interface housing on
completion of the wiring, see diagram 11.3.
Secure with the two cartridge retaining screws provided in the
cartridge body.
11.4 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 14.
12 Commissioning
IMPORTANT: At the time of commissioning, complete all
relevant sections of the Benchmark Checklist located in the
centre pages of this document.
12.1 Preliminaries - All Systems
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 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 soundness and purge air from the
gas supply.
12.2 Filling the Heating Circuit
With the gas service isolation valve closed and with no
demand from any external controls.
1. Fill the heating system.
Sealed system only - fill the system to a pressure of
1.0bar.
2. Vent all air from the system - repeat as
neccessary until the system is full and all the air has
been vented.
12.3 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 12.1. Check the supply pressure at the
pressure test point is 20mbar.
Diagram 12.1
14507
GAS SERVICE
ISOLATION
VALVE
GAS SUPPLY
PIPE IN
PRESSURE
TEST POINT