FLUE PIPES
A flue pipe should only be used to connect an appli-
ance to a chimney and should not pass through any
roof space.
Flue pipes may be of any of the following materials:
(a) Cast iron as described in BS 41:
1973 (1981), or
(b) Mild steel with a wall thickness of at
least 3mm, or
(c) Stainless steel with a wall thick
ness of at least 1mm and as
described in BS EN 10095:1999
Specification for stainless and heat
resisting steel plate, sheet and
strip, for Grade 316 S11, 316 S13,
316 S16, 316 S31, 316 S33, or
the equivalent Euronorm 88-71
designation, or
(d) Vitreous enamelled steel comply-
ing with BS 6999: 1989.
Flue pipes with spigot and socket joints should be fit-
ted with the socket uppermost.
CHIMNEY
The Erin is a radiant room heater and must be con-
nected to a chimney of the proper size and type.
The chimney must have a cross-sectional area of at
least 30 square inches 18150sq. mm or a diameter
of at least 6” (150mm). It is best to connect to a
chimney of the same size, as connection to
a larger size may result in a somewhat less draught.
Do not connect to a chimney serving another appli-
ance. Minimum chimney height 15’ (4.1 meters)
from floor on which stove is installed. An existing
masonry chimney should be inspected and if neces-
sary repaired by a competent mason. The stove
must be connected to a chimney with a minimum
continuous draft of .06” wg. Poor draft conditions
will result in poor performance.
Chimneys for use with solid fuel appliances should
be capable of withstanding a temperature of 1100oC
without any structural change which would impair
the stability or performance of the chimney.
VENTILATION & COMBUSTION AIR REQUIRE-
MENTS
It is imperative that there is sufficient air supply to
the stove in order to support correct combustion.
The air supply to this appliance must comply with
B.S. 8303: Part 1.
The minimum effective air requirement for this appli-
ance is 53cm2(8.25 in2). When calculating combus-
tion air requirement for this appliance use the fol-
lowing equation: a total free area of at least 550mm2
per kW of rated output above 5kW shall be provid-
ed.
If there is another air using appliance fitted in the
same or adjacent room, it will be necessary to cal-
culate additional air supply.
All materials used in the manufacture of air vents
should be such that the vent is dimensionally stable
and corrosion resistant.
The effective free area of any vent should be ascer-
tained before installation. The effect of any screen
should be allowed for when determining the effective
free area of any vent.
Air vents direct to the outside of the building should
be located so that any air current produced will not
pass through normally occupied areas of the room.
An air vent outside the building should not be locat-
ed less than the dimensions specified within the
Building Regulations from any part of any flue termi-
nal. These air vents must also be fire proofed as per
Building Regulations.
Air vents in internal walls should not communicate
with bedsits, toilets, bathrooms or rooms containing
a shower.
Air vents traversing cavity walls should include a
continuous duct across the cavity. The duct should
be installed in such a manner as not to impair the
weather resistance of the cavity.
Joints between air vents and outside walls should be
sealed to prevent the ingress of moisture. Existing
air vents should be of the correct size and unob-
structed for the appliance in use.
If there is an air extraction fan or other air using
appliance fitted in the room or adjacent rooms where
this appliance is fitted, additional air vents will be
required to eleviate the possibility of spillage of prod-
ucts of combustion from the appliance/flue while the
fan is in operation.
Where such a installation exists, a test for spillage
should be made with the fan or fans and other appli-
ances using air in operation at full rate, (i.e. extrac-
tion fans, tumble dryers) with all external doors and
windows closed.
If spillage occurs following the above operation, an
additional air vent of sufficient size to prevent this
occurrence should be installed.
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