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7. CONCENTRIC FLUE SYSTEM CC
The concentric flue system consists of a 100 mm Ø inner flue concentric with a 150 mm Ø outer flue. These flues
have been set up concentrically; the combustion gases are exhausted through the internal flue while the fresh
combustion air is supplied between the internal and external flues.
7.1 Components of the concentric flue system. ( See Page 27 )
Different connections are possible using the concentric flue system. These are:
Through the roof face and through the exterior wall.
There are various options for mounting the pathway for this system,
however, there are a few important requirements/conditions:
∗ The total vertical duct length allowed may not exceed 12 metres (the sum of the duct length and calculation
lengths for the bends).
∗ The horizontal duct length at the roof outlet should not exceed 5 metres between bends.
∗ 90° bends have a 2-metre horizontal calculation length.
∗ 45° bends have a 1-metre horizontal calculation length.
∗ The outlet can be installed at any point on the roof face or exterior wall (supply and discharge in an
identical pressure area), but must meet applicable regulations.
∗ Duct pathways may not be insulated
Important:
∗ Ensure the restriction plate is mounted in the correct manner, as indicated in these instructions.
∗ The correct restriction plate will provide the unit with the most optimal efficiency, flame image and
combustion.
∗ Mounting an incorrectly placed restriction plate may cause malfunction of the unit.
CC KANAAL SYSTEEM ARTIKEL NR’S
DESCRIPTION MEASURE ( mm ) CODE NR. STAINLES STEEL
A) CONCENTRIC PIPE 1000
500
250
401410100000
401410050000
401410025000
B) CONCENTRIC BEND 45° SET 401420045002
C) WALL BRACKET 401430110000
D) CONCENTRIC BEND 90° 401420090000
E) WALL BAND ADJUSTABLE 401430120000
F) ADJUSTABLE LENGHT 250 401412025000
G) FLAT ROOF PLATE 401450150000
H) LOCKING BAND 401430100000
I) ADJUSTABLE ROOF PLATES (SET) 401450130000
J) FLAT ROOF FLASHING ALUMIN. 401472000000
K) STORM COLLAR / ROSETTE 401470100000
L) HORIZONTAL TERMINAL EXC 401450160000
M) SLOPE ROOF FLASHING 20-45° 401476020000
N) ROOFOUTLET 401450180000
O) SLOOP ROOF FLASHING 5-30° 401474005000
