10
2.3
MINIMUM AND MAXIMUM DIMENSIONS OF BUILDERS OPENING / VOID –
REAR FLUE FITTING
NOTE
: Maximum dimensions when measured on individual installations must not
calculate to exceed a void volume of 247dm
3
, or be less than 12 dm
3
. See page 14
for example calculation.
Flat Surface Area
Width = 525mm
Height = 660mm
Height
Min = 635mm
Max = 660mm
Width
Min = 450mm
Max = 500mm
Depth
Min = 200mm
Max = See Note
Below