Glow-worm Xtrafast 96-120 - Manual (Page 25)

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16 Routine Cleaning and Inspection
SPARK GAP
SENSE GAP
9877
Diagram 16.6
9876
Diagram 16.7
9875
FLOW
RESTRICTOR
AND COLD
WATER INLET
FILTER
16.10 Spark and Sense Gaps
• Check that the spark and sense gaps as shown in diagram
16.6.
16.11 Flue system
• Check externally to make sure that flue is not blocked
• Inspect flue system to make sure that all fittings are secure.
16.12 Operation of fan
• Switch on electrical supply and turn on gas.
• Light burner by opening a hot water tap.
• Check that fan operates when burner lights and stops when it
goes out.
16.13 Cold water inlet filter
Drain down domestic hot water circuit of boiler only, as follows:
• Close isolating valve/throttle (m) on cold water isolating cock,
see diagram 7.1.
Note: This valve is closed when screwed fully clockwise.
• Undo connecting nut from boiler cold water inlet connection.
• Clean and inspect filter, replace if necessary, see diagram
16.7.
• With both filter and restrictor in place, reconnect connecting
pipe to inlet connection and tighten.
• Fully open isolating valve/throttle on cold water inlet and check
for leaks.
4mm
4mm
5mm