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4
Maintenance
Remove burner and burner gasket (fig. 39, item 1,
page 41) by pulling upwards through the opening
(fig. 43, item 1).
Remove the front of the heat exchanger by releasing
the four retaining clips (fig. 43, item 2).
Remove the glow ignitor (fig. 41, item 1) and ionisa-
tion electrode (fig. 41, item 2).
In the case of the glow ignitor:
Loosen the fixing screw of the glow ignitor, detach
both earth (ground) leads and remove the retaining
plate of the glow ignitor by pulling it upwards, with-
draw the glow ignitor by pulling it upwards.
In the case of the ionisation electrode:
Swivel the retaining plate to one side and carefully
remove the ionisation electrode by pulling it upwards.
Remove securing pin on flow and return connection
conduit (fig. 44) of heat exchanger.
Remove spiral heat exchanger by pulling towards
front (fig. 44). Drain any water remaining in the heat
exchanger into the condensate trap.
Remove the restrictor baffle (fig. 45, item 2) on the
underside of the heat exchanger by withdrawing the
securing pin (fig. 45, item 1) and unscrewing the
restrictor baffle.
Clean the front and back cover of the heat exchanger
and the heat exchanger with water or compressed
air.
Clean the burner with compressed air or a soft brush.
Take care not to damage the fins of the heat exchanger.
Refitting (fig. 46) :
NOTE
Excessive flue gas temperatures may be
an indication of an incorrectly-fitted
restrictor baffle.
Screw the restrictor baffle in as far as it will go on the
underside of the heat exchanger (the final turn of the
heat exchanger increases the clearance between the
pipes) and insert securing pin.
Buderus • http://www.buderus-domestic.co.uk
44
Installation and servicing instructions for wall-mounted condensing gas boiler Buderus 600 - 11R/19R/24R • 02/2006
1
2
Fig. 43 Remove burner and release retaining clips
Fig. 44 Securing pin on spiral heat exchanger
2
Fig. 45 Removing the restrictor baffle
Subject to modifications resulting from technical improvements!
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