Pre-Installation
Greenstar 8000 Life – 6720883866 (2019/04)
16
4.4 Flue systems considerations
WARNING:
Flue systems
Possible flue gas escape
▶ Use Worcester, Bosch Group approved Condensfit II flue systems
only, no other manufacturer’s flue have been tested or approved for
use with Worcester, Bosch Group appliances.
CAUTION:
Concealed flue systems:
▶ Where a flue system is going to be concealed, provision must be
made for service and inspection.
▶ Voids containing concealed flues must have at least one inspection
hatch no less than 300mm square.
▶ Flue joints within the void must not be more than 1.5 metres from the
edge of the inspection hatch.
▶ Inspection hatches should be located at changes of direction.
▶ If this is not possible, bends should be viewable from both directions.
Refer to the manual supplied with the Worcester, Bosch Group flue kit for
complete installation instructions.
Flue kit part numbers
Table 8 Flue kit assembly part numbers
4.4.1 Flue length
The maximum flue length will depend on the following factors:
• 60/100mm flue system
– Vertical/horizontal flue type
– Appliance output
– Plume management length
• 80/125mm flue system
– Vertical/horizontal flue type
– Appliance output
Horizontal maximum flue lengths
Table 9 Maximum flue lengths - Horizontal flues
Vertical maximum flue lengths
Table 10 Maximum flue lengths - Vertical flues
Flue system bends
NOTICE:
Effective flue lengths of bends:
Each bend used has an equivalent straight flue length.
▶ Refer to the table below.
Table 11 Effective length of bends
4.4.2 Flue options
The systems have diiferent maximum flue lengths, refer to the following
example flue options for those maximum flue lengths.
Horizontal high level flue assembly
Fig. 15 Horizontal flue option
• Flue length [L] (initial bend included in length calculation)
– 60/100 = 202 - 603mm
– 80/125 = N/A
Part number Flue Ø Description
7 738 112 869 60/100 Telescopic horizontal flue kit (Silver)
7 716 191 082 60/100 Telescopic horizontal flue kit
7 716 191 171 60/100 Extended telescopic horizontal flue kit
7 733 600 048 60/100 Horizontal high level telescopic flue kit
7 719 003 702 80/125 Telescopic horizontal flue kit
7 719 002 430 60/100 Vertical balanced flue kit
7 719 002 431 80/125 Vertical balance flue kit
Flue length [L]
60/100
Flue length
[L]
80/125
Output No plume
management
+ 500mm
of plume
management
+ 4500mm of
plume
management
No plume
management
available
50 kW 9,000mm 9,000mm 6,200mm 40,000mm
45 kW 8,000mm 8,000mm 5,200mm 35,000mm
40 kW 11,000mm 11,000mm 8,200mm 35,000mm
35 kW 10,000mm 10,000mm 7,200mm 29,000mm
30 kW 17,000mm 17,000mm 14,200mm 25,000mm
Flue length [L] Flue length [L]
Output 60/100 80/125
50 kW 12,000mm 40,000mm
45 kW 12,000mm 35,000mm
40 kW 15,000mm 35,000mm
35 kW 14,000mm 29,000mm
30 kW 21,000mm 25,000mm
Effective flue length
Bend 60/100 80/125
45° 0.5m 0.5m
90° 1.5m 1.5m
0010015190-001
383 mm - 603 mm
60/100 mm
130 mm Min
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