Installation and servicing instructions for wall-mounted condensing gas boiler Buderus 600 - 11R/19R/24R • 02/2006
45
Subject to modifications resulting from technical improvements!
Buderus • http://www.buderus-domestic.co.uk
Maintenance
4
z
Check to ensure that the heat exchanger has been
fitted the right way round. The upper securing-pin
groove must be horizontal (fig. 46, item 1).
z
Refit the heat exchanger by following the above
procedure in reverse. Note the following:
z
The gasket between the front and back cover of the
heat exchanger 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.
z
Check the heat exchanger for leaks BEFORE reas-
sembling the front and back cover of the heat
exchanger.
z
Check O-ring seals (spiral), and replace as required.
z
Smear the O-ring seal
with
a thin layer of silicone
grease.
4.1.3 Cleaning the condensate trap and syphon
z
Remove the trap and withdraw it from the outlet see
fig. 47, item 1 and 2.
z
Clean the condensate trap.
z
Loosen the swivel and disconnect the syphon from
the hose (fig. 47, item 3).
z
Pull the syphon out of the bracket (fig. 47, item 3).
z
Clean the syphon.
z
Reassemble the syphon in reverse order.
z
Fill the condensate trap with water and then reas-
semble in reverse order.
z
Measuring the gas input pressure (flow pressure).
z
Check the gas/air ratio.
z
Leak test in operational condition.
z
Measuring the carbon monoxide content.
z
Carry out function testing.
4.1.4 Re-commission
See chapter 2 on page 30.
Fig. 46 Refitting the heat exchanger
1
WARNING!
CAUTION
Take care not to damage the insulation on
the restrictor baffle.
Fig. 47 Removing the condensate trap an syphon
2
1
3
