Buderus 500-24S Installation And Maintenance Instructions Manual page 17

Condensate absorption point
The condensate drainage pipe should have a minimum
outside diameter of 21.5 mm and the external pipe length
should not be more than 3 m. The condensate absorption
point should be sited in a convenient position as close as
possible to the boiler but not in the vicinity of other serv-
ices. For information fig. 17.
Note
When discharging condensate to an outside
drain caution must be taken to ensure block-
age cannot occur during freezing conditions.
If this is likely to occur, the use of a syphon
trap is recommended.
Buderus 500-24S - Subject to modifications resulting from technical improvements
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Fig. 17 External termination of condensate drainage
pipe to absorption point
1. External length of pipe 3 m max.
2. Ø21.5 mm min.
3. Ø1000 mm min.
4. Ø100 mm min. plastic tube
5. bottom of tube sealed
6. limestone chippings
7. Two rows of three 12 mm holes at 25 mm centres 50 mm
from bottom of tube and facing away from house
8. Ground (either/or)
9. 25 mm min.
10. 300 mm min.
11 hole depth 400 mm min.
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Installation
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7215 3100-17.1TD
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