Supplied By www.heating spares.co Tel. 0161 620 6677
ADDITIONAL CONCENTRIC FLUE KITS
2.8
The following additional concentric kits are available as optional extras.
Flue Extension Ducts
- 1000 mm and 500 mm long, (each duct extends
the flue length by up to 950 mm and 450 mm respectively).
93° Extension Elbow
- Allows an additional bend in the flue, and has an
'equivalent length' of 1550 mm. This elbow is mechanically different
from the flanged elbow supplied as standard with the appliance, but has
the same equivalent length.
45° Extension Elbow
- Allows an additional bend in the flue and has an
'equivalent length' of 775 mm.
Vertical Turret Socket
- For use with elevated horizontal flues and
vertical terminals.
Vertical Roof Terminal
- For use where an external wall is not available,
or where it is desirable to route the ducts vertically.
For installation details refer to the instructions
provided with the individual flue kits.
These optional kits may be used with the standard flue kits to produce an
extensive range of flue options, providing that the following rules are
strictly obeyed.
a)
The maximum/minimum permissible length of the room sealed flue
system are:
Horizontal flue terminal (all orientations) maximum 10000 mm (394 in)
Horizontal flue terminal (rear exit)
minimum 250 mm (10 in)
Vertical flue terminal
maximum 12000 mm (472 in)
Vertical flue terminal
minimum 600 mm (23
1
/
2
in)
The 'equivalent' flue length must not exceed the
maximum values stated.
b)
The standard terminal must always be fitted horizontally;
horizontal ducts must have a continuous fall towards the appliance
of 2.5°. This ensures condensate runs back into the appliance from
the flue system. The vertical terminal must always be used if a
vertical outlet is required.
c)
The concentric flue system must use either a flanged elbow or a
vertical flue turret socket at the entry/exit to the appliance.
d)
All joints must be correctly made and secured in accordance with
the installation instructions. When cutting ducts, avoid swarf,
uneven and sharp edges to maintain duct integrity.
Refer to Figures 2 and 3 to determine which option
kits are required before commencing the installation.
Instructions for installing the appliance with a
horizontal flue and straight extension ducts are
included in the main text of these instructions
(section 4.8).
PLUME DIVERTER
TERMINAL INSTALLATION
INSTALLATION INSTRUCTIONS
2.8.1
Plume Diverter Kit Part No: 956103
(For use with Standard horizontal telescopic flue kit - Part no 956120 -
only)
This kit is provided to assist in fitting a condensing boiler with reduced
clearances when fitted in good practice according to the Guide to
Condensing Boiler Installation published by DEFRA/HMSO.
This kit allows the boiler flue outlet to be directed to the left or to the
right only.
Under certain operating conditions condensing appliances have a
tendency to form a plume of water vapour at the terminal. Therefore
consideration should be given when fitting the Plume Diverter in terms
of plume dispersal onto adjacent surfaces and neighbouring properties.
a)
Refer to section 2.5 for instructions on fitting the flue system.
Also see Figure 5 for all other clearances.
The resistance of the diverter is equivalent to 0.5
metre of flue length. Ensure this is used when
calculating the maximum allowable flue length.
(maximum horizontal flue length restricted to 4.5
metres when using the plume diverter).
3h
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