Bosch FLOW 8000 D Installation And Maintenance Instructions Manual page 2

Table of contents
Table of contents
1 Explanation of symbols and safety instructions . . . . . . . . . . . 2
1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 2
2 Product Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Type Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4 Appliance type overview and accessories . . . . . . . . . . . 5
2.5 Product dimensions and minimum clearances. . . . . . . . 6
2.6 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Preparatory work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1 Observe general notices . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.2 Pipework installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1 Installation sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2 Mounting wall mounting bracket . . . . . . . . . . . . . . . . . . . 9
5.3 Installing the mounting plate (accessory) . . . . . . . . . . . 9
5.4 Hanging the HIU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1 Opening the control unit . . . . . . . . . . . . . . . . . . . . . . . . 10
6.2 Control unit terminals . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.3 Wiring the control unit . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.4 Cable preparations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.5 Connecting and securing the cable. . . . . . . . . . . . . . . . 11
7 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.1 Filling, flushing and venting the system . . . . . . . . . . . . 12
7.2 Adjusting the control unit . . . . . . . . . . . . . . . . . . . . . . . 13
7.3 Control valve status indicators . . . . . . . . . . . . . . . . . . . 14
7.4 Heat meter (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.5 Setting the control unit Sense II . . . . . . . . . . . . . . . . . . 15
7.6 Commissioning checklist. . . . . . . . . . . . . . . . . . . . . . . . 16
8 Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
9 Environment/disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
10 Inspection and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
10.1 Inspection and maintenance report . . . . . . . . . . . . . . . 18
10.2 Cleaning the strainer . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
10.3 Replacing components . . . . . . . . . . . . . . . . . . . . . . . . . 19
11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
11.1 Central Heating trouble shooting guide . . . . . . . . . . . . 22
11.2 Domestic Hot Water trouble shooting guide. . . . . . . . . 23
11.3 LED displays at the control unit. . . . . . . . . . . . . . . . . . . 24
11.4 Fault display control valves . . . . . . . . . . . . . . . . . . . . . . 25
11.5 Display Error codes heat meter . . . . . . . . . . . . . . . . . . . 25
11.6 Sense II diagnosis functions . . . . . . . . . . . . . . . . . . . . . 25
12 Data Protection Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
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13 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
13.1 Tech data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
13.2 Circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
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
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)
Table 1
1.2 General safety instructions
HNotices for the target group
These installation instructions are intended for 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, service and commissioning instructions (heat
source, heating controller, pumps, etc.) before installation.
▶ Observe the safety instructions and warnings.
▶ Follow national and regional regulations, technical regulations and
guidelines.
▶ Record all work carried out.
HTransport information
▶ Only remove packaging just before assembly.
FLOW 8000 D – 6721872703 (2024/07)