Worcester WM 12 Installation And Servicing Instructions page 9

Fig.8. Flue outlet terminating positions for oil-fired appliances
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.
Flue outlet Terminal Position
A Directly below an opening, air brick, window, etc......................................
B Horizontally to an opening, air brick, window, etc.....................................
C Below a gutter, sanitary pipe, eaves or balcony with protection.............
D Below a gutter, sanitary pipe, eaves or balcony without protection.......
E From vertical sanitary pipework....................................................................
F From an internal or external corner..............................................................
G Above ground or balcony level......................................................................
H From a surface or boundry facing the terminal..........................................
J From a terminal facing the terminal.............................................................
K Vertically from a terminal on the same wall...............................................
L Horizontally from a terminal on the same wall..........................................
NOTE: Flue outlet is shown in fig. 6 and7.
H.J.
9
C.D.
Window
B
A
Flue outlet
E
Terminal
G
Minimum Distance (mm)
600
600
75
600
300
300
630
600
1200
1500
750
K
L
F
F