Hunter Stoves HAWK 4 - Pre Installation Requirments

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PRE-INSTALLATION REQUIREMENTS
PLEASE CHECK THE FOLLOWING:
Any existing chimney/flue system must be confirmed
as suitable for this appliance as defined in Building
Regulations Document J. It must be swept and
inspected, by a competent person (see notes), to
confirm that is structurally sound and free from cracks
and obstructions.
The diameter of the Flue should not be less than
Ø125mm (Kestrel, Hawk 3 & 4, Herald 4, 5C, 5S, 8S) or
152mm (Herald 6, Low/High Output Inglenook, 8/14)
and not more than Ø200mm or Ø230mm. Do not
connect to systems that have large voids or spaces. If
any of these requirements are not met, the chimney
should be lined by a suitable method.
If the chimney is suspected of previously serving an
open fire it must be swept again, within a month of
regular use, to clear any soot that may have been
dislodged due to the variation in combustion levels
and higher flue gas temperature levels. The
chimney/flue system exit must comply with Building
Regulations Document J. The minimum height and
should terminate in accordance with Table 1.
CONNECTION TO THE CHIMNEY
An existing fireplace opening can be bricked up or
sealed with a register plate. A short length of flue pipe
of minimum 125mm (Kestrel, Hawk 3 & 4, Herald 4,
5C, 5S, 8S) or 152mm (Herald 6, Low/High Output
Inglenook, 8/14) internal diameter may then be used
to connect the stove to the chimney. This flue pipe
should be made of 316 grade stainless steel or
vitreous enamelled steel, nominal thickness 1.2mm.
Ensure that the pipe end is no closer than 76mm to
the chimney walls. The length of any horizontal run of
flue pipe must not exceed 125mm or 152mm (as
above). It is essential that all connections between the
stove and chimney-flue are sealed and made airtight.
Make provision to access the chimney/flue system for
cleaning and the removal of debris. If there is no
existing chimney then either a prefabricated block
chimney in accordance with Building Regulations
Approved Document J, or a twin-walled insulated
stainless-steel flue to BS4543 can be used. These
chimneys must be fitted in accordance with the
manufacturer’s instructions and Building Regulations.
New masonry and flue block chimneys must meet the
requirements of Building Regulations Document J. Any
connecting flue pipe systems must also meet these
regulations.
Please check the suitability of the fireplace and/or
surround for use with this appliance before installing
it. If you have any doubts about the suitability of your
chimney, consult your local Dealer/Stockist or
Installation Engineer. Both the chimney and flue pipe
must be accessible for cleaning and if ANY part of the
chimney cannot be reached through the stove (with
baffle removed), a soot door must be fitted in a
suitable position.
FLUE OUTLET POSITIONS (DOCUMENT J):
Position on Roof
Clearances to flue exit
A
At or within
600mm of the ridge
At least 600mm
above the ridge
B
Elsewhere on a roof
(Pitched or Flat)
At least 2.3 M horizontally
from the nearest point on the
weather surface and:
a) At least 1.0 M above the highest
point of intersection between the
chimney and weather surface; or
b) at least as high as the ridge
C
Below (on a pitched roof)
or within 2.3 M
horizontally to an opening
window or dormer.
At least 1.0 M above the top of the
opening
D
Within 2.3 M of an
adjoining or adjacent
building, whether or not
beyond the boundary
At least 600mm above any part of
the adjacent building within 2.3 M