Buderus 500 - 24/C, Servicing Manual

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We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk
Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006 3
box 1 List of contents
1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Servicing manual user guide . . . . . . . . . . . 10
3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 Symptoms . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6 Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7 Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
9 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
G. C. Aplliance No. :
Buderus 500-24/S 41-110-24
Buderus 500-24/C 41-110-04
Buderus 500-28/C 41-110-03
Other manuals available for this boiler are:
– user manual;
– installation and maintenance instructions;
– wall spacing frame instructions.
box 2 Preface
These service instructions apply to:
Buderus wall-mounted condensing gas boilers
500 - 24/S, 500 - 24/C and 500 - 28/C.
Model: C
13(x)
, C
33(x)
, C
53(x)
, C
73(x)
Type: GB/IE II
2H3P
20 mbar, 37 mbar
Power rating: 230 VAC, 50 Hz, IP X4D
Fuse rating: 1.25 Ampere slow blow
The boiler unit consists of the following components:
–
500
Gas condensing boiler
–
28
Maximum output is 28 kW
–
C
Combination boiler (with integrated hot water
supply)
–
S
System boiler.
Important general instructions for use
Only use the boiler in accordance with its designated use and
the service instructions. Installation, maintenance and repair
must be carried out by competent service engineers (e.g.
CORGI registered). Only use the boiler in conjunction with
the accessories and spare parts indicated in the installation,
maintenance and service instructions. Other accessories
and consumables may only be used if they are expressly
provided for the designated use and if system performance
and safety are not affected in any way.
The boiler is suitable for connection to fully pumped, sealed
water systems ONLY. Adequate arrangements for
completely draining the system by provision of draining
valves must be provided in the installation pipework.
Pipework from the boiler is routed downwards as standard,
but may be routed upwards behind the boiler using the wall
spacing frame.
Subject to technical modifications.
As a result of our policy of constant development, there may
be small differences between illustrations, functional steps
and technical data.
BENCHMARK' Log Book
All Buderus gas fired boilers now include an installation,
commissioning and service record log book.
The details of the log book will be required in the event of any
warranty work being requested.
Please complete the appropriate sections on completion of
the installation and commissioning.
REMEMBER
: Please hand the log book back to the user.