Installation Site; Gas Supply - Vaillant ecoTEC VU Installation And Maintenance Instructions Manual

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2 Safety
– BS 6981 Installation of low pressure gas pipework of up
to 35 mm in domestic premises.
– BS 4814 Specification for: Expansion vessels using an
internal diaphragm, for sealed hot water and heating sys-
tems.
– BS 7074 Application, selection and installation of expan-
sion vessels and ancillary equipment for sealed water
systems.
Part 1 Code of practice for domestic heating and hot
water.
Part 2 Code of practice for low and medium temperature
hot water systems.
– BS 7593 Code of practice for treatment of water in
domestic hot water central heating systems
– BS EN 13831 Closed expansion vessels with built in dia-
phragm
– BS EN 14336 Heating systems in buildings. Installation
and commissioning of water based heating systems.
– BS 5440 – 1 Installation of flues and ventilation for gas
appliances of rated input not exceeding 70 kW*
– BS 5440 – 2 Flueing and ventilation for gas appliances
of rated input not exceeding 70 kW*
* 1st 2nd and 3rd family gases.
– BS EN 6798 Installation & maintenance of gas fired hot
water boilers of rated input not exceeding 70 kW net
Institute of Gas Engineers Publications:
– IGE/UP/1B (Edition 2) Tightness testing and direct purg-
ing of small natural gas installations.
– IGE/UP/ 7 (Edition 2) Gas in timber and light steel
framed buildings.
– I.S. 813 – Domestic Gas Installations - 2nd edition
( Ireland)
– BS 5482 – Part 1 Domestic butane and propane gas
burning installations

2.4.2 Installation site

The location chosen for the boiler must permit the provi-
sion of a satisfactory flue termination. The location must
also provide adequate space for servicing and air circula-
tion around the boiler.
Before commencement of any works the installer should
carry out a full risk assessment in accordance with Health
and Safety executive regulations.
The boiler may be installed in any room, although particular
attention is drawn to the requirements of BS 7671 (IEE Reg-
ulations), the electrical provisions of the Building Regula-
tions (Scotland) and in IE the current edition of IS 813 and
the current ETCI rules, in respect of the installation of a
boiler in a room containing a bath or shower.
In case of installation of the boiler in an unusual location,
special procedures may be necessary and BS 5546 and
BS 6798 give detailed guidance on this aspect. The boiler
must be mounted on a flat, vertical wall, which must be suf-
ficiently robust to take the weight of the boiler.
The boiler may be installed on a combustible wall, subject
to the requirements of the Local Authorities and Building
Regulations. A compartment used to enclose the boiler
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must be designed and constructed specifically for this pur-
pose. (An existing cupboard or compartment may be used
provided that it is modified for the purpose). Details of
essential features of cupboard/compartment design includ-
ing airing cupboard installations are given in BS 6891. In IE
the current edition of IS 813.
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If the boiler is to be installed in an airing
cupboard it is not required to separate the
boiler with a non-combustible partition. However
installation and servicing clearances must be
maintained, and the boiler kept clear of any
clothing.
Caution.
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Risk of damage caused by aggressive
vapours and dust.
Aggressive vapours and dust in the installa-
tion room may cause corrosion damage to
the boiler and to the flue gas installation.
> Ensure that the boiler is room sealed if
the air in the installation room contains
aggressive vapours or dust.
> Observe the following when choosing the installation site
and operating the boiler,
– Do not install the boiler in rooms prone to frost.
– Do not install the boiler in rooms in which the com-
bustion air contains chemical substances, such as flu-
oride, chlorine, sulphur, dust, etc. (e.g. sprays, sol-
vents, cleaning agents, paint, adhesives).
> Please ensure that the boiler is room sealed or in a sepa-
rate installation room if
– the combustion air supply contains the aforemen-
tioned substances,
– you install the boiler in hairdresser salons, painter's or
joiner's workshops, cleaning businesses or similar.
> Do not route the combustion air through an old oil fur-
nace chimney, as this can also cause corrosion.

2.4.3 Gas supply

An existing gas meter should be checked to ensure that it is
capable of passing the rate of gas supply required.
Installation pipes should be fitted in accordance with
BS 6891, in IE in accordance with the current issue of
IS 813. Pipework from the meter to the boiler must be of an
adequate size.
Do not use pipes of a smaller size than the boiler gas con-
nection. The complete installation must be tested and
purged in accordance with:
Installation and maintenance instructions ecoTEC 0020173113_01
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