IDEAL imax W45 Installation And Servicing Manual page 20

24 FLUE TERMINATION POSITION
Due to the high efficiency of these boilers pluming will occur. For this reason vertical termination is recommended, and in any
case, terminal positions which could cause problems should where possible be avoided.
Particular care should be taken in the case of large multiple boiler installations, and complying with the requirements of the Clean
Air Act.
The information below is extracted from BS. 5440 Pt. 1 and is for boilers with heat inputs not exceeding 70kW nett, and the latest
Building Regulation Part J. Detailed reference should still be made to these standards. In IE refer to I.S. 813:2002.
Below an opening (1)
A.
Above an opening (1)
B.
Horizontally to an opening (1)
C.
Below gutters, soil pipes or drain pipes
D.
Below eves
E.
Below balcony or car port roof
F.
From a vertical drain pipe or soil pipe
G.
From an internal or external corner or to a boundary alongside the terminal
H.
Above ground, roof or balcony level
I.
From a surface or a boundary facing the terminal
J.
From a terminal facing the terminal
K.
From an opening in the car port into the building
L.
Vertically from a terminal on the same wall
M.
Horizontally from a terminal on the same wall
N.
Directly below an opening, air brick, windows, etc.
Below plastic/painted gutters
Below painted surface
Below eaves or balcony
From wall
* may be reduced to 300mm if a shield fitted
(1) An opening here means an openable element, such as a openable window, or a fixed opening such as an air vent. However,
in addition, the outlet should not be nearer than 150mm (fanned draught) to an opening into the building fabric formed for the
purpose of accommodating a built in element, such as a window frame.
If the terminal is fitted less than 500 mm below
plastic gutters, painted eaves or any other
painted surface then an aluminium shield at
least 1m long should be fitted to protect the
surface.
For positioning of open flue terminals
reference should be made to BS. 5440 Pt. 1.
In IE refer to I.S.813.2002.
boundary
I
H
F
J
L
boundary
HEAT INPUTS IN EXCESS OF 70kW NETT
For boiler installations with total heat inputs in excess of 70kW nett, reference should be made to BS6644.
In IE refer to I.S.820.2000.
20
INSTALLATION
Concentric Wall Terminal Positions
Concentric Roof Terminal Positions
D, E
B
C
A
F
G
F
I
N
M
K
ima5355
Minimum spacing
300 mm 12 in
300 mm 12 in
300 mm 12 in
75 mm 3 in
200 mm 8 in
200 mm 8 in
150 mm 6 in
300 mm 12 in
300 mm 12 in
600 mm 24 in
1200 mm 48 in
1200 mm 48 in
1500 mm 60 in
300 mm 12 in
300 mm 12 in
500 mm* 20 in
500 mm* 20 in
500 mm 20 in
1000 mm 40 in
ima5263
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Installation & Servicing