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The flue assembly shall be so placed or shielded as to
prevent ignition or damage to any part of the building.
Terminal position
Directly below an opening, above an opening or hori-
A
zontal to an opening, air brick, opening window, etc.
B
Below gutters, soil pipes or drain pipes
C
Below eaves
D
Below balconies
E
From vertical drain pipes and soil pipes
F
From internal or external corners
G
Above ground, roof or balcony
H
From a surface facing a terminal
I
From a terminal facing a terminal
From an opening in the car port (e.g. door, window)
J
into the dwelling
K
Vertically from a terminal on the same wall
L
Horizontally from a terminal on the same wall
M
Distance from adjacent for vertical Flue
Table 3.4 Terminal position for a fan assisted concentric flue
i
In addition, the terminal should not be nearer
than 150 mm to an opening in the building
fabric formed for the purpose of accommo-
dating a built-in element such as a window.
BS 5440–1: It is recommended that the fanned flue
terminal should be positioned as follows:
a) at least 2 m from an opening in the building directly
opposite, and
b) so that the products of combustion are not directed
to discharge across a boundary.
1) Dimensions B, C and D:
These clearances may be reduced to 25 mm without
affecting the performance of the boiler.
In order to ensure that the condensate plume does
not affect adjacent surfaces the terminal should be
extended as shown in Fig. 3.9.
2) Dimension F:
This clearance may be reduced to 25 mm without
affecting the performance of the boiler. However, in
order to ensure that the condensate plume does not
affect adjacent surfaces a clearance of 300 mm is
preferred. For IE, recommendations are given in the
current edition of IS 813.
Instructions for installation and servicing ecoTEC 839592_13
mm
300
75
200
200
25
300
300
600
1200
Fig. 3.9 Flue termination under balcony/eaves
1200
1500
300
3.8
Air supply
500
Detailed recommendations for air supply are given in
BS 5440: Part 2.
It is not necessary to have an air vent in the room or
internal space in which the boiler is installed.
Cupboard or compartment ventilation
The boilers are very high efficiency appliances. As a
consequence the heat loss from the appliance casing
during operation is very low. For cupboard or
compartment installations it is therefore not necessary
to provide any high or low level permanent air vents for
cooling purposes.
3.9
Electrical supply
A 230 V, ~ 50 Hz single phase electricity supply fused to
3 Amp. must be provided in accordance with the latest
edition of BS 7671 (IEE Wiring Regulations) and any other
local regulations that may apply. In IE reference should
be made to the current edition of the ETCI rules. The
method of connection to the mains electricity supply
must provide a means of completely isolating the boiler
and its ancillary controls. Isolation is preferably by the
use of a fused three pin plug and unswitched shuttered
socket outlet, both complying with the requirements of
BS 1363. Alternatively, a 3 Amp. fused double pole switch
with a 3 mm contact separation on both poles may be
used.
e
Danger!
Risk of death from electric shock!
If the appliance is not earthed, it may hold
voltage if a defect occurs.
> Earth the appliance.
General requirements
3
17
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