Maintenance
4
Installation and servicing instructions condensing gas boiler 800 - 24/29/43/60 and 800 - 24T25/29T25 H/V • edition 02/2006
35
Subject to modifications resulting from technical improvements !
Buderus • http://buderus-domestic.co.uk
z
Clean the burner with a
soft
brush and compressed air
(fig. 49).
z
Clean the heat exchanger with a rib comb and compressed
air.
z
Put all components back in place in reversed order.
z
Remove and clean the syphon (fig. 51).
Take care that the syphon cap is screwed on correctly.
z
Fill with water before putting the syphon back in place.
z
Put all components back in place in reversed order.
When plastic boiler connectors are used:
check the operation of the condensate water bypass
z
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 VAC
- max 6 VA
0
24 VAC
1
2
3
4
5
6
12
11
