Bosch Appliances 25/32kW, 18/25, 12/18 High Level Flue Terminal, Positions, Terminal Positionbh BV

PRE - INSTALLATION

Minimum dimensions of flue terminal positions for oil fired appliances:

HIGH LEVEL FLUE TERMINAL

TERMINAL POSITIONB(H) B(V)

				POSITIONS
A1 2	Directly below an opening, air brick, opening window, etc	600mm	N/A
B1 2	Horizontally to an opening, air brick, opening window, etc	600mm	N/A	•	Flue terminals must be positioned to avoid
					combustion products entering into buildings.
C	Below a plastic/painted gutter, drainage pipe or eaves if	75mm	N/A
				•	The flue must be fitted and terminated in
	combustible material protected				accordance with the recommendations of
D3	Below a plastic/painted gutter, drainage pipe or eaves without	600mm	N/A		BS 5410.
	protection to combustible material			•	The flue must not cause an obstruction.
				•	Discharge from the flue outlet must not be a
E	From vertical sanitary pipework	300mm	N/A
					nuisance.
F	From an external or internal corner or from a surface or boundry	300mm	N/A	•	Flue gases have a tendency to plume and in
	alongside the terminal				certain weather conditions a white plume of
					condensation will be discharged from the flue
G	Above ground or balcony level	300mm*	N/A
					outlet which could be regarded as a
H	From a surface or boundary facing the terminal	600mm**	N/A		nuisance, for example, near security lighting.
				•	There should be no restriction preventing the
J	From a terminal facing the terminal	1200**mm	—
					clearance of combustion products from the
K	Vertically from a terminal on the same wall	1500mm	N/A		terminal.
				•	The air inlet/outlet duct and the terminal of
L	Horizontally from a terminal on the same wall	750mm	—
					the boiler must not be closer than 25mm to
M	Above the point of highest intersection with the roof	—	600mm		any combustible material. Detailed
					recommendations on protection of
N	From a vertical structure on the side of the terminal	—	750mm
					combustible materials are given in BS 5410:1
				•	A protective terminal guard must be fitted if
O	Above a vertical structure less than 750mm from the side of the terminal	—	600mm
					the terminal is 2m or less above a surface
P	From a ridge terminal to a vertical structure on the roof	—	—
					where people have access.
					The guard must be spaced equally (minimum
Q	Above or to the side of any opening on a flat or sloping roof	—	300mm
					50mm) around the flue and fixed to the wall
R	Below any opening on a sloping roof	—	1000mm		with plated screws.

Key: — Not applicable, N/A Not allowed, B(H) Balanced Horizontal flue, B(V) Balanced Vertical flue.

Notes:

Stainless steel terminal guard. Part No: 7 716 190 050

1.Terminals should be positioned so as to avoid products of combustion accumulating in stagnant pockets around the building or

entering into buildings.

The following additional guidelines (from part

2. Vertical structure in N, O and P includes tank or lift rooms, parapets, dormers etc.

L Exceptions Guidance Document) are

3. Terminating positions should be at least 1.8m from an oil storage tank unless a wall with at least 30 min fire resistance and

recommended when determining the flue

extending 300mm higher and wider than the tank is provided between the tank and the terminating position.

outlet position:

4. Where a flue is terminated less than 600mm away from a projection above it and the projection consists of plastics or has a

combustible or painted surface, then a heat shield of at least 750mm wide should be fitted.

• Avoid discharging flue gases into car ports

5. If the lowest part of the terminal is less than 2m above the ground, balcony, flat roof or other place to which any person has

or narrow passageways.

access, the terminal should be protected by a guard.

6. Notwithstanding the dimensions given above, a terminal should not be sited closer than 300mm to combustible material. In the

• *Minimum distance of the flue terminal from

case of a thatched roof, double this separation distance should be provided. It is also advisable to treat the thatch with a fire

above ground is 2100mm where directed to a

retardant material and close wire in the vicinity of the flue.

7. It is essential that a flue or chimney does not pass through the roof within the shaded area delineated by dimensions Q and R.

public footpath, private access route or a

8. Where protection is provided for plastic components, such as guttering, it is essential that this is to the standard specified by the

frequently used area and 2500mm from a

manufacturer of the plastic components.

car parking area.

• **Minimum distance of the flue terminal to a

P

facing wall, fence, building or property

Q

boundary is 2500mm.

Q

Q

Q

Q

Q

O

Q

M

Flat roof

boundary

N

Pitched roof

R

F

C, D

J

B

H

A

F

K

E

F

L

G

boundary

15

HIGH LEVEL FLUE TERMINAL

INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE 12/18-18/25-25/32 8 716 106 252d (08/07)

POSITIONS