Explanation Of Symbols; General Safety Instructions; About The Product; Intended Use - Bosch W 120-5 O A Installations- Und Wartungsanleitung Für Den Fachmann

Explanation of symbols

1 Explanation of symbols
1.1 Explanation of symbols
Warnings
Warnings in this document are indicated by a warning
triangle printed against a grey background.
In addition, signal words at the start of a warning are
used to indicate the type and seriousness of the ensuing
risk if measures to prevent the risk are not taken.
The following signal words are defined and can be used in this
document:
• 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 a hazardous situation which, if not avoided,
could result in death or serious injury.
• DANGER indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
Important information
This symbol indicates important information where
there is no risk to people or property.
Additional symbols
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
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.
▶ To reduce oxygen permeation and therefore
corrosion to a minimum, do not use vapour-
permeable components! Never use open, vented
expansion vessels.
▶ Never close the pressure relief valve.
24
2

About the product

2.1

Intended use

The DHW cylinder is designed for heating and storing potable water.
Please observe national, regional, and local codes, regulations,
guidelines and standards for potable water.
Install this DHW cylinder only in sealed unvented systems.
Any other purpose is considered improper use. Any damage that may
result from non-intended use is excluded from liability.
Requirements for potable water
Water hardness, min.
pH value, min. – max.
Conductivity, min. – max.
Table 2 Requirements for potable water
2.2

Data plate

The data plate is located at the top rear of the DHW cylinder and includes
the following details:
Item Description
1 Model designation
2 Serial number
3 Actual capacity
4 Standby heat loss
5
Volume heated by immersion heater
6 Year of manufacture
7 Corrosion protection
8 Max. DHW temperature, cylinder
9 Max. flow temperature, heat source
10 Max. flow temperature, solar
11 Connected electrical load
12 Heating water heat input
13 Heating water flow rate for heating water heat input
14 Output volume at 40 °C electrically heated
15 Max. operating pressure, on the domestic hot water side
16 Highest design pressure
17 Max. operating pressure, heat source side
18 Max. operating pressure, solar side
19 Max. operating pressure on the domestic hot water side, CH
20 Max. test pressure on the domestic hot water side, CH
21 Max. DHW temperature with electric heating
Table 3 Data plate
2.3

Supplied parts

• Hot water cylinder
• Installation and maintenance instructions
Unit
ppm 36
grain/US gallon 2.1
°dH 2
6.5 – 9.5
μS/cm 130 – 1500
W 120-5 O – 6 720 819 306 (2018/10)