Glow-worm 23c - Manual (Page 20)

20 2000225000B
12 Commissioning
Please ensure the “Benchmark” logbook is completed and left
with the user.
The commissioning and first firing of the boiler must only be
done by a qualified registered person.
Gas installation
It is recommended that any air is purged from the supply at the
gas inlet test point on the gas valve, see diagram 12.1.
Filling the system 1 to 8
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9972
GAS INLET
TEST POINT
Diagram 12.1
1.
Make sure that:
• The boiler is connected to the electrical supply.
• The gas service cock is open.
Turn the switch OFF ( 0 )
3.
• Undo cap on automatic air vent on top of pump
and leave undone.
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4.
• Turn the switch ON ( I )
• Open the tap on the
filling device and fill the
system until the pressure
indicated on the display is
2 bar. Close filling device.
➜
➜
9838
2.
• Open the three boiler isolating valves. The slot
of the screw corresponds to flow direction.
(To unscrew turn anti-clockwise).
➜
➜
HEATING
RETURN
COLD
WATER IN
HEATING
FLOW
Fully open valves by
turning anti-clockwise.