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IN ALL TYPE OF CHIMNEYS THE MINIMUM HEIGHT
FOR CORRECT OPERATION OF THE CHIMNEY IS
4.5m AND SHOULD TERMINATE ABOVE THE ROOF
IN ACCORDANCE WITH REGIONAL STATUTORY
REQUIREMENTS RECOMMENDED FLUE DRAUGHT
- 12 pa MINIMUM. THE APPLIANCE SHOULD BE
INSTALLED AND CONFORM TO THE CURRENT
CODES OF PRACTICE FOR INSTALLATION OF
DOMESTIC HEATING AND COOKING APPLIANCES
BURNING SOLID FUEL - BS 8303.
ALWAYS ADVISE THE USER TO CLEAN THE
COOKER FLUES IN ACCORDANCE WITH THE
OPERATING INSTRUCTIONS AND TO HAVE THE
CHIMNEY SWEPT AT A MINIMUM OF 12 MONTHLY
INTERVALS AFTER THE COOKER IS
COMMISSIONED.
The position of available types of flue layouts are shown
in Figs. 2, 3 and 4, the cooker flue chamber is
adaptable to providing either top or back flue outlets, by
means of the reversible loose socket.
a) Rear Flue Outlet
This must only be used where there is a brick flue
immediately behind the cooker. Provision must be
made for a condensate collecting vessel and
cleaning door. See Fig. 3.
EXTENDED HORIZONTAL FLUE PIPE CONNECTION
IS ALLOWED UP TO A MAXIMUM OF 150mm IN
LENGTH.
NO BEND CONNECTIONS ARE ALLOWED.
b) Top Flue Outlet
The cooker should be connected to the main flue via
a 125mm minimum diameter cast iron flue pipe or
appropriately internally/externally vitreous enamelled
mild steel pipe and be sealed to the cooker flue
chamber with soft rope and fire cement. Any bends
in the flue pipe must not be less than 135º (45º from
vertical) and be complete with a cleaning door.
In Fig. 2 the cooker is installed in an existing recess.
There must be a clearance of not less than 150mm
between the top of the flue pipe and any overhanging
brickwork.
Any cavities or pockets above the register plate should
as far as possible be filled and if necessary the flue pipe
should be extended into the throat of the chimney and a
soot door provided for chimney sweeping.
If a flue liner or insulated chimney is used, the size
should not be less than 150mm.
In Fig. 3 the cooker is connected direct to a brick flue.
Horizontal pipe runs between cooker and brick flue
must not be used.
In Fig. 4 the cooker is connected to an existing brick
flue with a length of flue pipe. Square bends and
horizontal runs must not be used. There must be a
cleaning door at every bend.
NOTE: WHATEVER METHOD OF INSTALLATION IS
EMPLOYED. AIR MUST NOT BE ALLOWED TO
ENTER THE CHIMNEY EXCEPT THROUGH THE
COOKER. ALL JOINTS MUST BE AIR-TIGHT.
If the chimney is unlined, and there is any doubt about
its condition, it should be lined in accordance with
Current Building Regulations.
PROVISION MUST ALWAYS BE MADE FOR
SWEEPING THE CHIMNEY
IMPORTANT: CEMENT TYPE PIPES AND FITTINGS
MUST NOT BE USED WITHIN 2m OF COOKER.
CHIMNEYS OF PLAIN PIPE ARE NOT
RECOMMENDED BUT CERTAIN PROPRIETARY
MAKES OF INSULATED CHIMNEY ARE SUITABLE.
COOKER FLUE CONNECTION
FLUE LAYOUTS
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