Bosch WORCESTER Greenstar CDi Classic Series Technical Information page 53

For Greenstar CDi Classic boilers, the 100mm dia.
internal fl ue length is immediately reduced by 2,000mm
when the minimum plume management of 500mm is used.
For the Greenstar CDi Compact and Si Compact boilers,
the 100mm dia. internal fl ue is immediately reduced by
1,000mm when the minimum plume management of 500mm
is used.
Greenstar i Junior boilers are able to use the maximum
100mm dia. internal fl ue length of 4,600mm regardless of
the amount of plume management selected.
External plume management bends still need to be allowed
for. For more information, see below.
Furthermore, for both the Greenstar CDi Classic,
CDi Compact and Si Compact, the internal fl ue length must
be reduced by 700mm for every additional 1,000mm of
plume management, refer to the table below.
60mm dia. plume management system
To ensure that the maximum total straight fl ue length along
the plume management route is not exceeded, the following
should be added to dimension (M):
•
1,500mm for each extra 90º bend
•
750mm for each extra 45º bend
For plume management options with 60mm dia. extensions,
please refer to page 54.
The effective 100mm dia. internal fl ue length can be
determined by adding together all the straight fl ue lengths
and the effective lengths of the bends used. Allowances for
90º and 45º bends are detailed on pages 45-50.
Effective straight fl ue lengths for telescopic fl ue with plume management
Boiler
29CDi Classic
34CDi Classic
38CDi Classic
42CDi Classic
CDi Compact and
Si Compact series
i Junior series
Fig. A
Maximum straight fl ue length (L) with minimum
plume management length 500mm (M)
5,900mm
5,000mm
4,000mm
4,000mm
5,000mm
4,600mm
Condensfi t II™ telescopic fl ue and plume management
system measuring
Fig A
L (max)
Fig B
L (max)
Maximum straight fl ue length (L) with maximum
plume management length 4,500mm (M)
500mm
(min) (M)
4,500mm
(max) (M)
Fig. B
3,100mm
2,200mm
1,200mm
1,200mm
2,200mm
4,600mm
53 53