Buderus 600-19R Installation And Servicing Instructions page 28

4 Maintenance
Remove heat exchanger by pulling upwards through the
opening (fig. 30).
NOTE
Maintain the specified clearance of approx.
25 cm between the ceiling and the ventilation
cover.
Remove the front of the heat exchanger. This is done by
releasing the four snap catches at the sides.
Remove the hot surface ignitor (fig. 31, item 1) and
ionisation electrode (fig. 31, item 2).
In the case of the hot surface ignitor: loosen the fixing
screw of the hot surface ignitor, detach both earth (ground)
leads and remove the retaining plate of the hot surface
ignitor by pulling it upwards, withdraw the hot surface
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.
Clean the burner and both parts of the heat exchanger with
compressed-air or brush.
Refit the heat exchanger by following the above procedure
in reverse order.
CAUTION
The gasket between the two halves of the
casing shell should normally be replaced.
Fit the new gasket by pressing in from the top
on both sides, and without stretching.
DO NOT attempt to cut the gasket to size.
CAUTION
The burner gasket must match the shape of
the groove in the housing.
CAUTION
Check the heat-exchanger for leaks BEFORE
reassembling the casing shells.
4.1.2 Cleaning the heat exchanger after dismantling
Disconnect the system from the power supply.
Close the gas service valve.
Loosen the retaining screw and remove the casing.
Close the heating shutoff valves and drain the system.
CAUTION
Cut hot water on supply side by closing the
heating shutoff valve.
Subject to modifications resulting from technical improvements!
28 Installation and maintenance instructions for wall-mounted condensing gas boiler Buderus 600 - 11R/19R/24R • 05/2004
Fig. 30 Remove burner
Fig. 31 Remove the hot surface ignitor and ionisation
electrode
Boulter Buderus Ltd. • http://www.boulter-buderus.co.uk
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