Buderus 800 - Page 37

Maintenance 4
Wall-mounted condensing gas boiler Buderus 800 - Subject to modifications resulting from technical improvements!
37
 Clean the burner with a soft brush and compressed
air (fig. 49).
 Clean the heat exchanger with a rib comb and com-
pressed air.
 Put all components back in place in reversed order.
 Remove and clean the syphon (fig. 51).
Take care that the syphon cap is screwed on correct-
ly.
 Fill with water before putting the syphon back in
place.
 Put all components back in place in reversed order.
When plastic boiler connectors are used:
check the operation of the condensate water bypass
 Inject water (e.g. using a spray bottle) into the left-
hand flue gas measuring point (fig. 51) and check
that the
condensate water bypass is not obstructed.
fig. 49 Cleaning the burner
1
NOTE
The perforated plate (fig. 49, item 1) is only
provided on type 800 – 24 and 800 – 24T25
models.
fig. 50 Cleaning the heat exchanger
1
DANGER!
The hot surface ignitor (fig. 50, item 1) is
made of fragile material.
fig. 51 Checking the operation of the condensate water
bypass
1
2
3
4
5
6
7
8
9
10
24 V AC
- max 6 VA
0
24 V AC
1
2
3
4
5
6
12
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