General
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We reserve the right to make technical modifications
Buderus Ltd. • http://www.buderus-domestic.co.uk
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Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006
1 General
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Regulations and directives
It is a requirement that all gas appliances are installed and
serviced by a CORGI registered installer in accordance with
the regulations. Failure to service appliances correctly could
lead to prosecution. It is in your own interest, and that of
safety, to ensure the law is complied with.
It is a requirement and in your own interest, and that of safety
that this boiler must be serviced by a CORGI registered
installer, in accordance with the relevant requirements of the
current Gas Safety (Installation and Use) Regulations,
The Building Regulations, current I.E.E. Wiring Regulations
and the relevant British Standard Codes of Practise.
Detailed recommendations are contained in the following
British Standard Codes of Practice:
BS. 5440:1
Flues (for gas appliances of rated input not
exceeding 70 kW).
BS. 5440:2
Ventilation (for gas appliances of rated
input not exceeding 70 kW).
BS. 5449
Forced circulation hot water systems.
BS. 5546
Installation of gas hot water supplies for
domestic purposes (2nd. family Gases).
BS. 6798
Installation of gas fired hot water boilers of
rated input not exceeding 60 kW.
BS. 6891
Low pressure installation pipes.
BS. 7593: 1992:
Code of practice for treatment of water in
domestic hot water central heating
systems.
IGE/UP/1b
Tightness testing and purging domestic
sized gas installations.
Health and & Safety Document No. 635.
The Electricity at Work Regulations, 1989.
The manufacturer's notes must not be taken, in any way, as
overriding statutory obligations.
The design and construction of the Buderus wall-mounted
condensing gas boiler conforms to the basic specifications
listed in the European directive governing gas-fired appli-
ances 90/396/EEC, and with respect to EN 625, EN 483 and
EN 677.
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NOTE:
Observe the corresponding technical rules and the
building supervisory and statutory regulations when
installing and operating the system.
H
WARNING!
Keep the burner-control unit housing CLOSED when
working on water-bearing components.
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NOTE:
It is mandatory to clean and service the system once a
year. This includes an inspection of the entire system
to see if it is in full working order. Defects and faults
must be eliminated immediately.
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NOTE:
When instructions aren’t followed, warranty expires.
I
NOTE:
Condensing boilers work more efficient if the
CH flow/return temperature is as low as possible.
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 and BS 5440:1.
Bathroom Installations
This appliance is rated IP X4D.
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 Scot-
land, 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.
If the appliance is to be installed or serviced 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 or serviced in
Zone 3, as detailed in
BS.7671
.
Compartment Installations
A compartment used to enclose the boiler should be
designed and constructed especially 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:
BS 6798
(No cupboard ventilation is required - see 'Air
Supply' for details).
It is not necessary to have a purpose-provided air vent in the
room or internal space in which the boiler is installed. Neither
is it necessary to ventilate a cupboard or compartment in
which the boiler is installed, due to the low surface tempera-
tures of the boiler casing during operation; therefore the
requirements of
BS 6798
,
Clause 12
, and
BS 5440:2
may be
disregarded.
The permanent clearances required are:
in front:
8 mm
below:
21 mm
right side:
8 mm
left side:
8 mm
above:
21 mm
The position selected for installation MUST allow adequate
space for servicing in front of the boiler. See table below:
in front:
350 mm
below:
180 mm
right side:
8 mm
left side:
8 mm
above:
200 mm
In addition, sufficient space may be required to allow lifting
access to the wall mounting bracket.
Wall-mounted condensing gas combi boilers must only be
operated with Buderus purpose made gas systems, which
are certified for this type of boiler.
