PRE-INSTALLATION
6 720 821 670 (2018/06) 23
4.7 FLUE OPTIONS
4.7.1 Flue lengths
The flue systems have different maximum flue lengths
The Greenstar series has the option of two horizontal 60/100 RSF
(telescopic and longer telescopic) and one horizontal 80/125 RSF
(telescopic) flue system and two vertical RSF (60/100 or 80/125) flue
systems:
Refer to the following example Flue options for the maximum flue
lengths.
Horizontal high level flue assembly
TELESCOPIC HORIZONTAL FLUE ASSEMBLY
Extended horizontal flue
Horizontal flue with additional elbow (1 x 90 ° bend)
Horizontal flue with additional elbows (2 x 90 ° bends)
WARNING: Flue systems
▶ Only use Worcester, Bosch approved flue systems, no
other manufacturer’s flue systems have been
approved for use with Worcester appliances.
CAUTION: Non accessible flue systems:
▶ Where a flue system is not going to be accessible,
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.
NOTICE: Effective flue lengths:
▶ each 90° bend is equivalent to 2 metres of straight flue
▶ each 45° bend is equivalent to 1 metre of straight flue
Plume management kits are available for the 60/100
horizontal flue system.
Refer to the manual supplied with the plume
management kits for complete installation instructions
Part number Flue Description
7 716 191 082 60/100 Telescopic horizontal flue assembly
7 716 191 171 60/100 Longer telescopic horizontal flue
assembly
7 733 600 048 60/100 Horizontal high level telescopic flue
kit
7 719 003 702 80/125 Telescopic horizontal flue assembly
7 719 002 430 60/100 Vertical flue assembly
7 719 002 431 80/125 Vertical flue assembly
Table 18 Flue kit part numbers
Flue length (mm)
60/100 80/125
Horizontal high level telescopic flue assembly 202 - 603 N/A
Table 19
6720806945-29.1Wo
383 mm - 603 mm
60/100 mm
130 mm Min
Flue length (mm)
60/100 80/125
Telescopic horizontal flue assembly 180 - 570 405 - 600
Longer telescopic horizontal flue assembly 570 - 790 N/A
Table 20
Maximum flue length
(mm)
60/100 80/125
Extended horizontal flue 4,600 13,000
Table 21
Maximum flue length
(mm)
60/100 80/125
Horizontal flue with 1 x 90° bend 2,600 11,000
Table 22
Maximum flue length
(mm)
60/100 80/125
Horizontal flue with 2 x 90° bends N/A 9,000
Table 23
6720806945-18.1Wo
350 mm - 570 mm
60/100 mm
130 mm Min
6720806945-20.1Wo
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