19
4 - GENERAL BOILER INFORMATION
Apart from a conventional flue, several balanced flue
options are available for use with the iQE Internal
boilers. All are suitable for use with Class C2 kerosene.
Note: None of the flue sections in the
following system can be cut.
1 Low level horizontal balanced flue (
iQE
Y-system)
Available in Short (for single thickness brick
walls) and Standard kits.
Extensions are available which extend the
flue by 225 mm, 450 mm or 675 mm. 90° and
45° elbows are also available.
The maximum flue length - from the centre of
the boiler flue outlet to the outer face of the wall
- is 4 metres (with or without elbows included).
No more than 2 x 45° or 1 x 90° elbow should be
fitted per system.
2 High
level balanced flue
(iQE
W-system
)
Allows the flue to rise vertically within the
building before exiting through the wall
horizontally.
The maximum flue length - from the top of the
boiler flue outlet to the outer face of the wall -
is 10 metres for all iQE boilers.
Extensions are available which extend the
flue by 225 mm, 450 mm or 950 mm. An
adjustable extension of 275 to 450 mm is
also available.
A 45° elbow is also available. No more than 6 x
45°elbows should be fitted per system. Each
elbow reduces the overall maximum length of the
system by 1 metre.
3 Vertical balanced flue (
iQE
W-system)
Allows the flue to rise vertically from the
boiler to exit through the roof.
The maximum flue length - from the top of
the boiler flue outlet to the terminal - is 12
metres for all iQE boilers.
Extensions are available which extend the flue
by 225 mm, 450 mm or 950 mm. An adjustable
extension of 275 to 450 mm is also available.
A 45° elbow is also available. No more than 6 x
45° elbows should be fitted per system. Each
elbow reduces the overall maximum length of
the system by 1 metre.
4 External balanced flue (
iQE
G-system)
Where it is not practical to use a low level
(
iQE
Y-system) or internal high level/vertical
(
iQE
W-system) balanced flue, the boiler
can be fitted with an external vertical/high
level flue (
iQE
G-system). See Fig. 10c.
The Starter kit fits to the boiler in the same
way as a low level balanced flue (
iQE
Y-
system) and the external Tee allows the
connection of a twin wall insulated flue
pipe and a combustion air inlet -providing
a room sealed flue system. The external
system can terminate at either high level or
vertically (above roof level) as required. See
Fig. 10c.
The minimum dimensions for locating the
terminal from building features (windows, doors,
etc.) are shown in Fig. 11.
If the flue terminal is fitted less than 2 metres
above a surface to which people have access, the
terminal must be protected by a guard. The guard
must be fitted centrally over the flue terminal and
securely fixed to the wall.
The low level balanced flue (
iQE
Y-system) is
supplied with a stainless steel guard. This must
be fitted in all circumstances to prevent objects
from entering the flue outlet.
The terminal must be positioned so as to avoid
products of combustion accumulating in
stagnant pockets around the buildings or
entering into buildings. Care should be taken
that the plume from condensed flue gases does
not cause a nuisance.
The following external flue (
iQE
G-system)
components are available from iQE.
iQE Horizon Internal Oil Boiler
4.8
Balanced flue options
