Flue outlet Terminal Position
Minimum Distance (mm)
A
Directly below an opening, air brick, window, etc......................................
600
B
Horizontally to an opening, air brick, window, etc.....................................
600
C
Below a gutter, sanitary pipe, eaves or balcony with protection.............
75
D
Below a gutter, sanitary pipe, eaves or balcony without protection.......
600
E
From vertical sanitary pipework....................................................................
300
F
From an internal or external corner..............................................................
300
G
Above ground or balcony level......................................................................
630
H
From a surface or boundry facing the terminal..........................................
600
J
From a terminal facing the terminal............................................................. 1200
K
Vertically from a terminal on the same wall............................................... 1500
L
Horizontally from a terminal on the same wall..........................................
750
NOTE: Flue outlet is shown in fig. 6 and7.
9
L
F
F
K
G
A
E
B
C.D.
H.J.
NOTE:
The dimensions given are for general guidance only. Other surrounding buildings or objects may affect the clearance of
combustion products. An alternative flue terminal position should be sought when there is any possibility of a nuisance being
caused by inadequate dispersal of flue products.
Terminals should be positioned so as to avoid products of combustion entering into buildings.
Fig.8. Flue outlet terminating positions for oil-fired appliances
Window
Flue outlet
Terminal