Cabinet Mounted Low Level Flue Terminal Positions - Bosch 12/18 Instruction Manual

Minimum dimensions of flue terminal positions for oil fired appliances:
TERMINAL POSITION
1
A Directly below an opening, air brick, opening windows, etc
1
B Horizontally to an opening, air brick, opening window, etc
C Below a plastic/painted gutter, drainage pipe or eaves if
combustible material protected
2
D Below a plastic/painted gutter, drainage pipe or eaves without
protection to combustible material
E From vertical sanitary pipework
F From an external or internal corner or from a surface or boundry
alongside the terminal
G Above ground or balcony level
1
H From a surface or boundary facing the terminal with 2500mm
clearance to both sides of the terminal
2
H From a surface or boundary facing the terminal with less than
2500mm clearance to either side of the terminal
1
I From a terminal facing the terminal with 2500mm clearance to
clearance to both sides of the terminal
2
I From a terminal facing the terminal with less than 2500mm
clearance to either side of the terminal
K Horizontally from a terminal
B(H) Balanced Horizontal flue
1 An opening means an openable
element, such as an openable
window, or a permanent opening
such as a permanently open air vent.
Notwithstanding the dimensions
above, a terminal should be at least
300mm from combustible material,
e.g. a window frame.
2 A way of providing protection of
combustible material would be to fit
a heat shield at least 750mm wide.
boundary
I
H
boundary
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32
8 716 113 389b (09/07)
1200mm
2500mm
1200mm
2500mm
750mm
C, D
F
B
A
E
G
CABINET MOUNTED LOW LEVEL
FLUE TERMINAL POSITIONS
B(H)
• Flue terminals must be positioned to avoid
combustion products entering into buildings.
600mm
• The flue must be fitted and terminated in
accordance with the recommendations of
600mm
BS5410.
75mm
• The flue must not cause an obstruction.
• Discharge from the flue outlet must not be a
600mm
nuisance.
• Flue gases have a tendency to plume and in
certain weather conditions a white plume of
300mm
condensation will be discharged from the flue
300mm outlet which could be regarded as a
nuisance, for example, near security lighting.
• There should be no restriction preventing the
300mm*
clearance of combustion products from the
terminal.
• The air inlet/outlet duct and the terminal of
the boiler must not be closer than 25mm to
any combustible material. Detailed
recommendations on protection of
combustible materials are given in BS 5410:1
• A protective terminal guard must be fitted if
the terminal is 2m or less above a surface
where people have access.
Stainless steel terminal guard.
Part No: 7 716 190 050
• The following additional guidelines (from part
L Exceptions Guidance Document) are
recommended when determining the flue
outlet position:
• Avoid discharging flue gases into car ports
or narrow passageways.
• *Minimum distance of the flue terminal from
above ground is 2100mm where directed to a
public footpath, private access route or a
frequently used area and 2500mm from a
car parking area.
J
F
F
K
CABINET MOUNTED LOW LEVEL
FLUE TERMINAL POSITIONS
14