Installation
1
Installation and servicing instructions condensing gas boiler 800 - 24/29/43/60 and 800 - 24T25/29T25 H/V • edition 02/2006
9
Subject to modifications resulting from technical improvements !
Buderus • http://buderus-domestic.co.uk
1.3
Flue Installation
1.3.1
Siting the flue terminal
The flue must be installed in accordance with the
recommendations of
BS. 5440-1:2000
.
Pluming will occur at the terminal so terminal positions where
this could cause a nuisance should be avoided.
The air supply and the flue gas exhaust must meet the
applicable general regulations. Please consult the instructions
provided with the flue terminal kits prior to installation.
The boiler MUST be installed so that the terminal is exposed
to external air.
It is important that the position of the terminal allows the free
passage of air at all times.
Minimum acceptable spacing from the terminal to obstructions
and ventilation openings are specified in table 1.
If the terminal is fitted within 1000 mm of a plastic or painted
gutter or within 500 mm of painted eaves, an aluminium shield
of at least 1000 mm long should be fitted to the underside of
the gutter or painted surface.
If the lowest part of the terminal is less than 2 metres above the
level of the ground, balcony, flat roof or place to which any
person has access, the terminal must be protected by a guard.
Protective guards are available from Quinnell Barrett and
Quinnell, Old Kent Road, London.
Ensure that the guard is fitted centrally.
The flue assembly shall be so placed or shielded as to prevent
ignition or damage to any part of the building.
The air inlet/products outlet duct and the terminal of the boiler
MUST NOT be closer than 25 mm (1'') to combustible material.
Detailed recommendations on the protection of combustible
material are given in
BS. 5440- 1:2000
.
If this could occur the appliance MUST be turned off (with the
owners permission), and labelled as unsafe until corrective
action can be taken.
fig. 1
Flue terminal position
A
A
F
M
G
M
B,C
F
F
B,C
K
G
K
K
G
C
L
L
F
J
K
G
D
H, I
under carport
Terminal Position
Minimum
Spacing
A. Directly below or alongside an opening
window, air vent or other ventilation opening
300 mm (12")
B. Below guttering, drain pipes or soil pipes
75 mm (3")
C. Below eaves
200 mm (8")
D. Below balconies or a car port roof
200 mm (8")
E. From vertical drain pipes or soil pipes
150 mm (6")
F. From internal or external corners
300 mm (12")
G. Above adjacent ground, roof or balcony level
300 mm (12")
H. From a surface facing the terminal
600 mm (24")
I.
From a terminal facing a terminal
1200 mm (48")
J. From an opening in a car port (e.g. door or
window) into dwelling
1200 mm (48")
K. Vertically from a terminal on the same wall
1500 mm (60")
L. Horizontally from a terminal on the wall
300 mm (12")
M. Adjacent to opening
300 mm (12")
Table 1
Balanced flue terminal position
NOTE
It is absolutely essential to ensure, in practice,
that products of combustion discharging from
the terminal cannot re-enter the building or any
other adjacent building through ventilators,
windows, doors, other sources of natural air
infiltration, or forced ventilation/airconditioning.
