Pre-Installation
Greenstar Utility
ErP -
6 720 821 751 (2018/04)
20
Fig. 24 Conventional flue
[A]
Appliance
[B]
Flue
[C]
Max. two bends at 135°
[D]
Anti down-draught terminal
[E]
Chimney
[F]
Height to first bend from top of appliance (minimum 600mm of
stainless steel flue attached to the appliance)
4.9.3
Room sealed flue options
Figure 25 shows the components used and table 11 gives maximum flue
length [L] from the appliance outlet to the outside wall/roof of the
building for each flue configuration.
In all cases L is measured from the outside of the appliance casing.
• To achieve the maximum flue length [L], a flue section will have to be
reduced in length.
• Only the flue terminal or straight flue extensions can be reduced in
length by cutting.
Calculating the flue length
Measure the total flue length required, noting that the maximum straight
flue length including the terminal is:
Horizontal 100/150mmØ: 6400mm (excluding 270mm of terminal
extending outside the building)
Vertical 100/150mmØ: 10000mm (measured from the appliance top
panel).
Then reduce the total straight flue length for each extra flue bend
(excluding the vertical flue kit 90° elbow) by:
• 1000 mm for 90°
• 500 mm for 45°
Flue extension lengths
Horizontal & Vertical 100/150mmØ: 1000mm overall length.
Effective length when engaged into sockets within the flue run is 950mm.
Flue terminal lengths
Horizontal 100/150mmØ: 1090mm effective length 820mm)
Vertical 100/150mmØ: 1740mm
Appliance
Flue diameter [Ø ]
Maximum flue length
32/50
130mm
15000mm
50/70
130mm
15000mm
Table 10 Conventional Flue (CF) maximum flue length
C
B
A
D
E
6720808218-20.1W
o
F
All horizontal sections must rise away from the appliance
by 52mm per metre (3°) to allow the condensate to drain
back to the appliance.