Flue Options; Flue Lengths - Benchmark 27i System Compact Installation, Commissioning And Servicing Instructions

PRE-INSTALLATION
4.9

FLUE OPTIONS

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,
Part number 7 716 191 086.
Refer to the manual supplied with the Plume
Management kits for complete installation instructions
Part number Flue
7 716 191 082 60/100 Telescopic horizontal flue assembly
7 716 191 171 60/100 Longer telescopic horizontal flue
7 733 600 048 60/100 Horizontal high level telescopic flue
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 9 Flue kit part numbers
4.9.1

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
Horizontal high level telescopic flue assembly 202 - 603 N/A
Table 10
20
Description
assembly
kit
60/100 mm
383 mm - 603 mm
130 mm Min
Flue length (mm)
60/100 80/125
TELESCOPIC HORIZONTAL FLUE ASSEMBLY
Telescopic horizontal flue assembly
Longer telescopic horizontal flue assembly 570 - 790
Table 11
Extended horizontal flue
Extended horizontal flue
Table 12
Horizontal flue with additional elbow (1 x 90 ° bend)
Horizontal flue with 1 x 90° bend
Table 13
Horizontal flue with additional elbows (2 x 90 ° bends)
Horizontal flue with 2 x 90° bends
Table 14
Greenstar i System Compact
60/100 mm
350 mm - 570 mm
130 mm Min
Flue length (mm)
60/100 80/125
180 - 570 405 - 600
N/A
Maximum flue length
(mm)
60/100 80/125
6,000 15,000
Maximum flue length
(mm)
60/100 80/125
4,000 13,000
Maximum flue length
(mm)
60/100 80/125
2,000 11,000
ErP - 6 720 813 280 (2015/07)