Maintenance
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34
Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 28C • 01/2004
Subject to modifications resulting from technical improvements!
Boulter Buderus Ltd. • http://www.boulter-boilers.com
z
Remove the plugs (see fig. 51, item 1, 2 and 3) from the
gas air unit.
z
Remove the air suction tube from the gas air unit
(see fig. 51, item 4).
z
Then remove the plugs of the ionisation electrode (fig. 51,
item 6) and the glow ignitor (fig. 51, item 5).
z
By turning the unit a quarter turn (fig. 52, item 2), the unit
can be removed by lifting it out of the boiler.
z
Clean the burner when necessary. The burner may only be
cleaned with a soft brush or compressed air.
z
Now the front cover of the heat exchanger can be removed
by opening the latches (fig. 52, item 1).
z
Remove the flue gas retarder from the heat exchanger
(fig. 53, item 1).
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Inspect the heat exchanger. When needed clean the heat
exchanger with a soft brush or compressed air.
z
Chek the seal for damage. Always replace the seal when
in doubt.
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Reassemble in reverse order.
fig. 51 Remove plugs of the gas air unit
1
2
3
4
6
5
fig. 52 Remove gas air unit
1
2
CAUTION
Replace the ceramic burner seal after
removing the burner from the gas air unit.
fig. 53 Remove flue gas retarder
1
NOTE
Only when a heat exchanger is heavily soiled
is it recommended to drain the system, to
remove the heat exchanger for cleaning.
