Bosch WORCESTER Condensfit II GREENSTAR 60/100 HORIZONTAL FLUE, Installation Manual

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PRE-INSTALLATION
6 720 644 842b (2010/12) 8
3.3 FLUE MEASURING AND CUTTING
3.3.1 FLUE EXTENSION EXAMPLE
1. Measure the flue length L from the centre line of the
flue turret, along the route of the flue system, to the
face of the outside wall.
2. Select the required number of extensions and bends
to achieve the require flue run.
3. If the flue requires cutting:
–
Set the telescopic flue length to 400mm.
–
Secure the joint with the screw and tape provided.
–
Subtract 400mm from the measured flue length L
to determine the amount to be cut of an extension.
Fig. 5 Flue length determination
NOTE: FLUE LENGTH
B
Do not exceed the maximum straight length for a horizontal 60/100mm flue or a 60mm plume
management system (if used) as stated in the relevant Installation, Commissioning & Servicing
Instructions manual or addendum.
Cutting the flue to an exact measurement is not normally required as the telescopic flue terminal can allow
for some adjustment.
The terminal end projects beyond the
outside wall by the distance shown in fig. 5
Maximum effective flue lengths L max. (mm)
Greenstar Si, i Junior, i System & Ri
Series 4600
Greenstar 30CDi System & Regular 7900
Greenstar 40CDi Regular 6000
Greenstar 27CDi 10000
Greenstar 30CDi 7000
Greenstar 37CDi 6500
Greenstar 42CDi 6000
British Gas 430i 7900
British Gas 532i 7000
British Gas 537i 6500
British Gas 542i 6000
Table 7 Maximum flue lengths
110
50
L
R
E T
6720644842-03.1Wo
50
L Effective length of the flue system
R Actual length of the flue sections (L-50 = R)
E Extension flue length
T Telescopic flue length
Table 8 Key to figure 5