Bosch Condens 7000 F, Installation And Maintenance Instructions For The Contractor

Page: 3 / 68

Table of contents
3 Condens 7000 F – 6720871560 (2019/11)
1 Explanation of symbols and safety instructions
1.1 Explanation of symbols
Warnings
In warnings, signal words at the beginning of a warning are used to
indicate the type and seriousness of the ensuing risk if measures for
minimising danger are not taken.
The following signal words are defined and can be used in this document:
DANGER:
DANGER indicates that severe or life-threatening personal injury will
occur.
WARNING:
WARNING indicates that severe to life-threatening personal injury may
occur.
CAUTION:
CAUTION indicates that minor to medium personal injury may occur.
NOTICE:
NOTICE indicates that material damage may occur.
Important information
The info symbol indicates important information where there is no risk to
people or property.
Additional symbols
Table 1
1.2 General safety instructions
H
Notices for the target group
These installation instructions are intended for gas,
plumbing, heating and electrical contractors. All
instructions must be observed. Failure to comply with
instructions may result in material damage and
personal injury, including danger to life.
▶ Read the installation instructions (heat source,
heating controller, etc.) before installation.
▶ Observe the safety instructions and warnings.
▶ Follow national and regional regulations, technical
regulations and guidelines.
▶ Record all work carried out.
11.11 Replacing components. . . . . . . . . . . . . . . . . . . . . . . . . .41
11.11.1 Removing the air/gas ratio control valve . . . . . . . . . . .41
11.11.2 Removing the fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
11.11.3 Replacing components according to the service
life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
11.12 Refitting detached parts . . . . . . . . . . . . . . . . . . . . . . . .43
11.12.1 Fitting the gas line to the gas valve . . . . . . . . . . . . . . . .43
11.12.2 Refit the combustion air connector. . . . . . . . . . . . . . . .43
11.13 Check for leaks during operation. . . . . . . . . . . . . . . . . .43
11.14 Checking the ionisation current. . . . . . . . . . . . . . . . . . .43
11.15 Completing inspection and maintenance . . . . . . . . . . .43
11.15.1 Removing measuring devices . . . . . . . . . . . . . . . . . . . .43
11.15.2 Installing casing parts . . . . . . . . . . . . . . . . . . . . . . . . . .43
11.15.3 Checking the gas/air ratio. . . . . . . . . . . . . . . . . . . . . . .43
11.15.4 Confirming inspection and maintenance . . . . . . . . . . .43
12 Emergency operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
12.1 Clearing faults in emergency operation. . . . . . . . . . . . .44
13 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
13.1 Recognising the operating condition and clearing
faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
13.2 Calling up the fault history . . . . . . . . . . . . . . . . . . . . . . .44
14 Operating and fault displays . . . . . . . . . . . . . . . . . . . . . . . . . . .45
14.1 Control unit status indicators. . . . . . . . . . . . . . . . . . . . .45
14.2 Service displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
14.3 Control unit fault displays . . . . . . . . . . . . . . . . . . . . . . .46
14.4 Status indicator of the burner control unit.. . . . . . . . . .53
15 Check temperature switch . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
16 Testing the differential pressure switch . . . . . . . . . . . . . . . . .54
16.1 Test the continuity of the differential pressure
switch at negative pressure. . . . . . . . . . . . . . . . . . . . . .54
16.2 Test the differential pressure switch for continuity
at zero pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
17 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
17.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
17.2 Sensor curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
17.2.1 Temperature sensor at digital burner control unit . . . .59
17.3 Hydraulic resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . .59
17.4 Connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . .59
17.4.1 Control unit connection diagram . . . . . . . . . . . . . . . . . .59
17.4.2 Burner control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
17.4.3 Diagrammatic representation of supply air/flue
gas monitor and gas tightness . . . . . . . . . . . . . . . . . . . .61
17.5 Conversion of vol.% CO2 into vol.% O2 for burner
setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
17.6 System Commissioning Report . . . . . . . . . . . . . . . . . . .63
17.7 Inspection and maintenance protocols . . . . . . . . . . . . .64
Symbol Meaning
▶ a step in an action sequence

a reference to a related part in the document
• a list entry
– a list entry (second level)