A BRICK CHAMBER TO THE SIZES IN FIG 2 IN AN EXISTING BRICK OR
STONE CHIMNEY A 125mm MINIMUM DIAMETER FLUE LINER
CONFORMING TO BS715 MAY BE USED, PROVIDING IT IS SEALED AT
THE TOP AND BOTTOM OF THE EXISTING BRICK OR STONE CHIMNEY.
NOTE
ANY OF THE ABOVE FLUES MUST NOT BE RESTRICTED BY DAMPERS OR
REGISTER PLATES, THE FLUE MUST SERVE ONLY ONE APPLIANCE AND
NOT HAVE ANY BRANCHES OR TRAPS WHICH MAY IMPEDE THE
NATURAL DRAUGHT .IF ANY TERMINAL IS FITTED IT MUST BE
SUITABLE FOR THE PURPOSE.
300mm
765mm
50mm
FIG 3
THE FRONT FACE SEAL MUST BE FLAT TO ENSURE A GOOD SEAL IS
FORMED BETWEEN THE REAR AND BASE OF THE APPLIANCE AND
CHIMNEY TO AVOID ANY REDUCTION IN THE NATURAL DRAUGHT.
ALWAYS ENSURE THE HEARTH IS LEVELED OFF TO HELP ENSURE
NO NATURAL DRAUGHT IS LOST BELOW BASE (SEE FIG 3)
A NON COMBUSTIBLE HEARTH MUST BE PROVIDED BENEATH THE
APPLIANCE WITHIN THE FIREPLACE OPENING.
A FIRE RESISTANT HEARTH MUST ALSO BE PROVIDED
SYMMETRICALLY DISPOSED ABOUT THE FIREPLACE OPENING A
MINIMUM THICKNESS OF 12mm WITH THE PERIMETER 50mm ABOVE THE
FLOOR LEVEL
ISSUE 2
8
THE WIDTH MUST EXTEND A MINIMUM OF 150mm EITHER SIDE OF THE
