Supplied By www.heating spares.co Tel. 0161 620 6677
6
Important: This flue system is only available for use with the
Finest. The flue system IS NOT suitable for the Finest Gold.
If an installation requires that the boiler is sited in an unusual or
inconvenient position with respect to the limitations of the
concentric flue kits, an alternative twin pipe system can be
purchased to increase the flue lengths available.
Figure 8 shows typical applications, and Fig. 9 shows the
components available, together with their equivalent lengths.
The following rules must be adhered to when using this system:
a)
The maximum permissible length of each duct must not
exceed 9m. However if the length exceeds 7m the flue pipe
must be insulated with suitable non-flammable material to
prevent formation of condensates.
b)
The vertical flue terminal fitted must be the correct one for the
appropriate termination as shown in the illustrations.
c)
There must not be any downward runs in the flue pipe.
(The flow of the flue products may be horizontal or vertically
upwards only.)
d)
The flue system must use the twin pipe header at the entry/exit
to the appliance.
e)
All joints must be correctly made and secured in accordance
with the installation instructions.
8
9
TWIN PIPE COMPONENTS
2.7
OPTIONAL ALTERNATIVE TWIN PIPE FLUE SYSTEM
•
See
note
•
TYPICAL EXAMPLES OF
TWIN FLUE SYSTEMS
M/F 45° SWEPT ELBOW
EQUIV. LENGTH 0.8M
PART No. 840510
80/118mm DIA.
VERTICAL FLUE
TERMINAL
PART No. 840506
ADAPTOR TWIN PIPE
TO VERTICAL
TERMINAL
PART No. 840509
SEAL (FITTED)
IN ADAPTOR
M/F 90° SWEPT ELBOW
EQUIV. LENGTH 1.5M
PART No. 840507
FIBRE SEAL
SUPPLIED WITH
APPLIANCE &
ALWAYS FITTED
BETWEEN
APPLIANCE AND
T-ADAPTOR OR
FLANGED ELBOW
FLANGED
T–ADAPTOR
PART No.
840511
80mm
DIA.
M/F 1m
EXT. DUCT
PART No.
840508
SEAL FITTED
IN DUCT AT
FEMALE END
F
F
F
F
F
F
F
M
M
M
M
M
M
M
NOTE:
Maximum length 9m.
Note: each additional
90° bend has a resistance
of 1.5m and each 45° bend
a resistance of 0.8m.
8(a)
8(b)