The diagrams (opposite) show the
components used and the maximum flue
length for each configuration of 100mm and
125mm flues.
• Only straight flue sections can be reduced
in length by cutting.
• The 100mm horizontal flue terminal can
be fitted from inside or outside the
building.
IMPORTANT:
All horizontal sections must rise away
from the boiler by 52mm per metre (3°)
to allow the condensate to drain back
to the boiler.
A - Horizontal terminal
B - Straight flue extension
C - Flue bend 90°
D - Flue bend 45°
E - Vertical Terminal
Calculating the flue length:
Measure the total flue length (L) required,
noting that the
maximum straight flue length
including the terminal is:
Horizontal Ø60/100mm: 4000mm
Horizontal Ø80/125mm: 13000mm
Vertical Ø60/100mm: 6400mm
Vertical Ø80/125mm: 15000mm
Then reduce the total straight flue length for
each extra flue bend (excluding the flue elbow)
by:
2000mm for 90°
1000mm for 45°
Flue Extension lengths:
Horizontal & Vertical Ø60/100mm: 950mm
Horizontal & Vertical Ø80/125mm: 950mm
Flue Terminal lengths:
Horizontal Ø60/100mm: 530mm
Horizontal Ø80/125mm: 1200mm
Vertical Ø60/100mm: 1140mm
Vertical Ø80/125mm: 1365mm
PRE-
INSTALLATION
INSTALLATION & SERVICING INSTRUCTIONS
16
ROOM SEALED FLUE OPTIONS
8 716 115 216b (09.2008)
ROOM SEALED FLUE OPTIONS
E
D
C
B
B
B
C
B
D D
B
C C
B
C C
B
C C C
E
B
D
D
C
E
B
C
L= Ø100mm 130 - 530mm
L= Ø125mm 350 - 1200mm
L
Ø100mm x4
Ø125mm x12
L
L= Ø100mm 310 - 4000mm
L= Ø125mm 350 - 13000mm
L= Ø100mm 2000mm
L= Ø125mm 11000mm
Ø100mm x2
Ø125mm x10
L
Ø100mm x2
Ø125mm x10
L=Ø100mm 2000mm
L=Ø125mm 11000mm
L= Ø125mm 9000mm
Ø125mm x8
L
L= Ø125mm 9000mm
Ø125mm x8
Min.
120mm
L
L= Ø125mm 7000mm
Ø125mm x6
Min.
120mm
L
L= Ø100mm 4400mm
L= Ø125mm 13000mm
Ø100mm x4
Ø125mm x12
Min.
120mm
L
L=Ø100mm 2400mm
L=Ø125mm 11000mm
Ø100mm x2
Ø125mm x10
Min.
120mm
L
L
A
A
A
A
A
A
A
A
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