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4 General Requirements
1) In addition, the terminal should not be nearer than 150mm to an
opening in the building fabric formed for the purpose of
accommodating a built-in element such as a window.
* BS 5440-1 It is recommended that a fanned flue terminal should
be positioned as follows: a) at least 2m from an opening in a
building directly opposite, and b) so that the products of
combustion are not directed to discharge across a boundary.
4.5 Air supply
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.
4.6 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.
4.7 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 BS7671 (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
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R1
12
4.4.4 Flue termination
The following details refer to both flue systems.
a. The terminal must be positioned such that the pro-
ducts of combustion can disperse freely at all times.
b. In certain weather conditions a plume of water
vapour may be visible from the flue terminal.
Positions where this could be a nuisance should be
avoided.
c. If the terminal is fitted less than 2 m above a
balcony, above ground or above a flat roof to which
people have access then a suitable terminal guard;
must be provided and fitted (Model K3 - made by
Tower Flue Components, Tonbridge, TN9 1TB).
Note!
Vertical flues must not terminate within
600 mm of an openable window, air vent or any
other ventilation opening.
The flue assembly shall be so placed or shielded as to
prevent ignition or damage to any part of the building.
Fig. 4.5: Flue termination
A
BCD
A
G
H, I
F
J
B F
M
L
L
K
K
G
G
F
F
E
A
A
Terminal position for fan-assisted flue
(minimum distance)
mm
A
1)
Directly below an openable, above an opening
or horizontal to an opening i.e. air brick, opening
window or other, etc
300
B
Below gutters, soil pipes or drain pipes
25
C
Below eaves
25
D
Below balconies (below car port roof)
25
E
From vertical drain pipes and soil pipes
25
F
From internal or external corners
25
G
Above ground or balcony level
300
H
From a surface or boundary facing a terminal
600*
H
From a terminal facing a terminal
1200
J
From an opening in a car port (e.g. door, window)
into a dweling
1200
K
Vertically from a terminal on the same wall
1500
L
Horizontally from a terminal on the same wall
300
M
Distance from adjacent wall for vertical Flue
500
