8
icos
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Installation & Servicing
GENERAL
LOCATION OF BOILER
The boiler must be installed on a flat and vertical wall, capable
of adequately supporting the weight of the boiler and any
ancillary equipment.
The boiler may be fitted on a combustible wall and insulation
between the wall and the boiler is not necessary, unless
required by the local authority.
For electrical safety reasons there must be no access from the
back of the boiler.
The boiler must not be fitted outside.
Timber Framed Buildings
If the boiler is to be fitted in a timber framed building it should
be fitted in accordance with the Institute of Gas Engineering
document IGE/UP/7:1998.
Bathroom Installations
This appliance is rated
IP20.
The boiler may be installed in any room or internal space,
although particular attention is drawn to the requirements of the
current IEE (BS.7671) Wiring Regulations and, in Scotland, the
electrical provisions of the building regulations applicable in
Scotland, with respect to the installation of the boiler in a room
or internal space containing a bath or shower. For Ireland
reference should be made to the current ETCI rules for electrical
installations and I.S.813:2002.
If the appliance is to be installed in a room containing a bath or
shower then, providing water jets are not going to be used for
cleaning purposes (as in communal baths/showers), the
appliance can be installed in Zone 3, as detailed in BS.7671.
Compartment Installations
A compartment used to enclose the boiler should be designed
and constructed specially for this purpose.
An existing cupboard or compartment may be used, provided
that it is modified for the purpose.
In both cases details of essential features of cupboard /
compartment design, including airing cupboard installation, are
to conform to the following:
z
BS. 6798. (No cupboard ventilation is required - see “Air
Supply” for details).
z
The position selected for installation MUST allow adequate
space for servicing in front of the boiler.
z
For the minimum clearances required for safety and
subsequent service see the wall mounting template and
Frame 2. In addition, sufficient space may be required to
allow lifting access to the wall mounting plate.
z
If the appliance is using a B
23
twin flue pipe system then
compartment ventilation is required. Refer to Installation
Instructions for the 80/80 twin flue system.
Boiler House Installations
When installed in a separate boiler house and using the air
inlet with the twin pipe flue system, ventilation must be in
accordance with BS5440:2.
GAS SUPPLY
The local gas supplier should be consulted, at the installation
planning stage, in order to establish the availability of an
adequate supply of gas. An existing service pipe must NOT be
used without prior consultation with the local gas supplier.
The boiler MUST be installed on a gas supply with a governed
meter only.
A gas meter can only be connected by the local gas supplier or
by a CORGI registered engineer. In IE by a Competent Person.
An existing meter should be checked, preferably by the gas
supplier, to ensure that the meter is adequate to deal with the
rate of gas supply required.
N.B.
The principle of the 1:1 gas valve ensures that the
icos
HE
range is able to deliver it’s full output at inlet pressures
down to 14mb. However if dynamic pressures below 20mb are
experienced ensure this is adequate for
ALL
other gas
appliances in the property.
IMPORTANT.
Installation pipes MUST be fitted in accordance with BS. 6891.
In IE refer to I.S.813:2002. Pipework from the meter to the boiler
MUST be of an adequate size, i.e. no longer than 20m and not
less than 15mm O.D.
The complete installation MUST be tested for gas soundness
and purged as described in the above code.
FLUE INSTALLATION
Pluming will occur at the terminal so terminal positions which
would cause a nuisance should be avoided.
The flue must be installed in accordance with the
recommendations of BS.5440-1:2000. In IE refer to I.S.813:2002.
The following notes are intended for general guidance.
1.
The boiler MUST be installed so that the terminal is
exposed to external air.
2.
It is important that the position of the terminal allows the
free passage of air across it at all times.
3.
Minimum acceptable spacing from the terminal to obstructions
and ventilation openings are specified in Table 3.
Flue Terminal Positions
Min. Spacing*
1.
Directly below or alongside an opening
window, air vent or other ventilation opening.
300mm (12")
2.
Below guttering, drain pipes or soil pipes.
25mm ( 1")*
BS5440-1 2000
75mm (3")
3.
Below eaves.
25mm (1")*
BS5440-1 2000
200mm (8")
4.
Below balconies or a car port roof.
25mm (1")*
BS5440-1 2000
200mm (8")
5.
From vertical drain pipes or soil pipes.
25mm (1")*
BS5440-1 2000
150mm (6")
6.
From an internal or external corner or to a
25mm (1")*
boundary along side the terminal.
BS5440-1 2000
300mm (12")
7.
Above adjacent ground, roof or balcony level.
300mm (12")
8.
From a surface or a boundary facing the terminal.
600mm (24")
9.
From a terminal facing a terminal.
1,200mm (48")
10.
From an opening in a car port
(e.g. door or window) into dwelling.
1,200mm (48")
11.
Vertically from a terminal on the same wall.
1,500mm (60")
12.
Horizontally from a terminal on the wall.
300mm (12")
Vertical Terminals
13.
Above the roof pitch with roof slope of all angles. 300mm (12")
Above flat roof.
300mm (12")
14.
From a single wall face - Flat Roof
600mm (24")
From a single wall face - Pitched Roof
1000mm (40")
From corner walls.
1000mm (40")
Twin Flue Applications
15.
Centre distance between air inlet and flue
outlet ducts.
120mm (5")
Table 3 - Balanced Flue Terminal Position
* Only one reduction down to 25mm is allowable per installation
otherwise BS5440-1 2000 dimensions must be followed.
202414-6.pmd
19/02/2008, 13:07
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