20
Minimum distances to terminals in millimetres as measured from top of the chimney
or the rim of a low level discharge opening
A
Directly below an opening, air brick, window etc
600
B
Horizontally to an opening, air brick, window etc
600
C
Below a gutter, eaves or balcony with protection
75
D
Below a gutter or a balcony without protection
600
E
From vertical sanitary pipework
300
F
From an internal or external corner
300
G
Above ground or balcony level
300
H
From a surface or boundary 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
M
Above the highest point of an intersection with the roof
600
N
From a vertical structure on the side of the terminal
750
0
Above a vertical structure less than 750mm from the side of the terminal
600
P
From a ridge terminal to a vertical structure on the roof
1500
These notes form an integral part of the information shown above.
1.
Terminals should be positioned so as to avoid products of combustion accumulating in stagnant pockets
around the building or entering into buildings.
2.
Appliances burning Class D oil have additional restrictions.
3
Vertical structure in N, 0 and P include tank or lift rooms, parapets, dormers etc.
4.
Terminating positions A to L are only permitted for appliances that have been approved for low level flue
discharge when tested to OFS A1OO or A1O1.
5.
Terminating positions must be at least 1.8 metres distant from an oil storage tank unless a wall with at least
30 mins fire resistance and extending 300mm higher and wider than the tank is provided between the tank
and the terminating position.
6.
Where a flue is terminated less than 6OOmm away from a projection above it and the projection consists
of plastic or has a combustible or painted surface, then a heat shield of at least 750mm wide should be
fitted to protect these surfaces.
7.
For terminals used with vapourising burners, a horizontal distance of at least 2300mm is required between
the terminal and the roof line.
8.
If the lowest part of the terminal is less than 2 metres above the ground, balcony, flat roof or other place to
which any person has access, the terminal must be protected by a guard.
4
INSTALLATION
Clearances advised by the
British Standards
for Open, Low Level
Discharges and Balanced Flues fitted to Oil Fired Boilers
4-D
Summary of Contents for Combi 120
Page 10: ...2 TECHNICAL SPECIFICATION 9 2 E F Riello Burner Specification...
Page 31: ...30...
Page 32: ...Combi Oil Boiler PART 2 Sealed System Domestic Hot Water 31...
Page 40: ...39 Combi Oil Boiler PART 3 Spare Parts...
Page 41: ...9 FAULT FINDING 40 T Repair or Replace Oil Pump r No...
Page 52: ...NOTES...
