Bosch 7 735 500 791, Installation And Maintenance Instructions For The Contractor

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Table of contents
W 300-5 P – 6 720 821 103 (2018/10)
25
Table of contents
1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . 25
2 About the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.1 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.2 Data plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.3 Supplied parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.5 Product information . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.6 Product data for energy consumption . . . . . . . . . . . . . 27
3 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.1.1 Requirements for installation location . . . . . . . . . . . . . 28
5.1.2 Positioning the DHW cylinder . . . . . . . . . . . . . . . . . . . . 28
5.2 Hydraulic connections . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2.1 Connecting the DHW cylinder on the water side . . . . . 28
5.2.2 Install a pressure relief valve
(provided by the customer) . . . . . . . . . . . . . . . . . . . . . .28
5.3 Installing the hot water temperature sensor . . . . . . . . 28
5.4 Immersion heater (accessory) . . . . . . . . . . . . . . . . . . . 28
6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1 Commissioning the DHW cylinder . . . . . . . . . . . . . . . . 29
6.2 Instructions for the user . . . . . . . . . . . . . . . . . . . . . . . . 29
7 Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8 Environment/disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.1 Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.2 Maintenance work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.2.1 Testing the pressure relief valve . . . . . . . . . . . . . . . . . . 30
9.2.2 Descaling/cleaning the DHW cylinder . . . . . . . . . . . . . 30
9.2.3 Checking the magnesium anode . . . . . . . . . . . . . . . . . . 30
1 Explanation of symbols
1.1 Explanation of symbols
Warnings
Signal words at the start of a warning indicate the type and seriousness
of the ensuing risk if measures to prevent the risk are not taken.
•
NOTICE indicates that material damage may occur.
• CAUTION indicates a hazardous situation which, if not avoided,
could result in minor to moderate injury.
• WARNING indicates possible severe personal injury.
• DANGER indicates that personal injury with a danger to life may
occur.
Important information
Additional symbols
1.2 General safety instructions
General
These installation and maintenance instructions are
intended for specialists.
Failure to observe the safety instructions can result in
serious injuries.
▶ Read and follow the safety instructions.
▶ Observe these installation and maintenance
instructions to ensure trouble-free operation.
▶ Install and commission heat sources and their
accessories according to the relevant installation
instructions.
▶ Never use open, vented expansion vessels.
▶
Never close the pressure relief valve.
Warnings are indicated in the text by a warning triangle
with a grey background and are framed.
This symbol indicates important information where
there is no risk to people or property. It is separated by
horizontal lines above and below the text.
Symbol Meaning
▶ Action step

Cross-reference to other points in this document or to
other documents
• Listing/list entry
– Listing/list entry (2nd level)
Table 1