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8-1
Conventional Flue
Note
The chimney must comply with current
Building Regulations, and BS5410 Part 1.
BS4543 applies to Factory Made Insulated
Chimneys, see Parts 2 and 3.
CONVENTIONAL FLUE 100mm (4")
ADAPTOR
AIR DUCT TO
BURNER
TEST POINT
FL FL FL FL FLOOR STANDING
OOR STANDING
OOR STANDING
OOR STANDING
OOR STANDING
(not 190/240 & 240/270)
CONVENTIONAL FLUE
100mm (4")
ADAPTOR
WALL MOUNTED
WALL MOUNTED
WALL MOUNTED
WALL MOUNTED
WALL MOUNTED
Fig. 8-1b Flue Adaptor
INFORMATION SUPPLIED BY OFTEC.
OFTEC
OPEN FLUE
BOILER IN ROOM
All Floor Standing Boilers are supplied with an adaptor and flexible air duct fitted for
conventional flue connection.
A chimney over 6 metres may
produce a draught exceeding
4mm.wg.
A draught stabiliser may be
required
Cowls and pots that may restrict the
flue should not be used
C
C
C
C
C
n o
n o
n o
n o
n o
e v
e v
e v
e v
e v
i t n
i t n
i t n
i t n
i t n
n o
n o
n o
n o
n o
l a
l a
l a
l a
l a
l F
l F
l F
l F
l F
e u
e u
e u
e u
e u
i S
i S
i S
i S
i S
e z
e z
e z
e z
e z
M
M
M
M
M
d o
d o
d o
d o
d o
l e
l e
l e
l e
l e
Ø Ø Ø Ø Ø
A
A
A
A
A
a d
a d
a d
a d
a d
t p
t p
t p
t p
t p
r o
r o
r o
r o
r o
4
/ 0
5 6
6
/ 0
0 8
8
/ 0
5 9
" 4
Y
s e
0 9
1 /
0 2
1
0 0
1 /
0 5
1
0 4
1 /
0 9
1
0 9
2 /
0 4
" 5
o N
2
0 4
2 /
0 7
INSULATION TO AVOID
CONDENSATION
190/240 & 240/270
Air duct connected
to burner only.
ENTRY
Fig. 8-1a Typical Conventional Flue with Brick Chimney
FOR FURTHER INFORMA
FOR FUR
FOR FUR
THER INFORMATION CONSUL
THER INFORMA
THER INFORMA
TION CONSUL
TION CONSULT THE L
TION CONSUL
FOR FUR
FOR FUR
THER INFORMA
TION CONSUL
OPEN FLUE
BOILER COMPARTMENT VENTILATED
FROM OUTSIDE
Fig. 8-1c Air Supply for Combustion and Ventilation
CONVENTIONAL FL
CONVENTIONAL FL
CONVENTIONAL FL
CONVENTIONAL FL
CONVENTIONAL FLUE
SOOT DOOR
ADAPTOR
(not 190/240 & 240/270)
TEST
POINT
AIR
T THE L
T THE LOCAL BUILDING CONTROL.
T THE L
OCAL BUILDING CONTROL.
OCAL BUILDING CONTROL.
OCAL BUILDING CONTROL.
T THE L
OCAL BUILDING CONTROL.
UE
UE
UE
UE
8
8
8
8
8
RAIN CAP
Will help prevent rain
entering flue
TERRACOTTA POT
Considered good practice but is
not a guarantee of overcoming
down draughts
LINER
Stainless Steel same
diameter as Boiler Flue
connection
4"Ø FLUE PIPE
Vitreous enamel or
Stainless Steel
4" to 3" Boiler Flue
Adaptor Required for Internal
Wall Mounted
SOOT
DOOR
135°
FLUE PIPE BENDS
Do not use 90 Bends
OPEN FLUE
BOILER COMPARTMENT VENTILATED
FROM ROOM
31
8 8 8 8 8
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