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5 Before installation
Fig.15
Clearances
5
390
450
Fig.16
Flue outlets
Tab.19
Terminal position with minimum distance
Key
Description
A
Directly below an opening, air brick open
(1)
ing window etc.
Above an opening, air brick, opening win
B
(1)
dow etc.
32
5
178
700
200
285
5
PN-0000613
J,K
N
R
M
I
I
F
L
1
5.3.5
Clearances
A flat vertical area is required for the installation of the boiler and it should
be capable of bearing the weight of the boiler when full of water.
These dimensions include the necessary clearances around the boiler for
case removal, spanner access and air movement. Additional clearances
may be required for the passage of pipes around local obstructions such
as joists running parallel to the front face of the boiler.
In the diagram these are MINIMUM recommended dimensions. Greater
clearance will aid installation and maintenance.
5.3.6
Flue/chimney location
The following guidelines indicate the general requirements for siting bal
anced flue terminals. For GB recommendations are given in BS 5440 Pt 1.
For IE recommendations are given in the current edition of I.S. 813 Do
mestic Gas Installations.
Important
Due to the nature of the boiler a plume of water vapour will be dis
charged from the flue. This should be taken into account when sit
ing the flue terminal.
T
U
A
D
E
C
I
S
B
F
A
A
G
H
H
I
1
Flue positions marked
mm
Key
Description
300
J
From a surface or boundary line facing
a terminal
300
K
From a terminal facing a terminal
(Horizontal flue)
From a terminal facing a terminal (Ver
tical flue)
I
J,K
require a flue terminal guard.
7679306 - 1 - 10082017
PN-0000456
mm
600
1200
600
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