Product Information; Intended Use; Scope Of Delivery; Product Description - Bosch Stora WS 300-5 PK Installation And Service Instructions For Contractors

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, 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.
H Handover to the user
When handing over, instruct the user how to operate
the heating system and inform the user about its
operating conditions.
▶ Explain how to operate the heating system and draw
the user's attention to any safety relevant action.
▶ In particular, point out the following:
– Alterations and repairs must only be carried out
by an approved contractor.
– Safe and environmentally compatible operation
requires inspection at least once a year and
responsive cleaning and maintenance.
▶ Point out the possible consequences (personal
injury, including danger to life or material damage)
of non-existent or improper inspection, cleaning
and maintenance.
▶ Point out the dangers of carbon monoxide (CO) and
recommend the use of CO detectors.
▶ Leave the installation instructions and the operating
instructions with the user for safekeeping.
2

Product information

2.1

Intended use

Enamelled DHW cylinders (cylinders) are designed for heating and
storing potable water. Please observe the applicable country-specific
regulations, guidelines and standards for potable water.
Only install the enamelled DHW cylinder (cylinder) in sealed unvented
DHW heating systems.
All other use is considered unsuitable. Any damage that results from
such use is excluded from liability.
Requirements for Unit
potable water
Water hardness ppm CaCO3
grain/US gallon
°dH
°fH
pH value -
Conductivity μS/cm
Table 2 Requirement for potable water
Stora – 6720821526 (2021/06)
2.2
• Hot water cylinder
• Technical documentation
2.3
Pos.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Table 3 Product description (
2.4
Pos.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Value
18
19
> 36
> 2.1
20
> 2
21
> 3.6
Table 4 Type plate
≥ 6.5... ≤9.5
≥130... ≤1500

Scope of delivery

Product description

Description
DHW outlet
Cylinder flow
Sensor pocket for temperature sensor, heat source
DHW circulation connection
Cylinder return
Solar flow
Sensor pocket for temperature sensor, solar
Solar return
Cold water inlet
Lower heat exchanger for solar thermal heating, smooth
enamelled tubing
Inspection aperture for maintenance and cleaning at the front
Female connection (Rp 1 ½") for installation of an immersion
heater
Upper heat exchanger for reheating by wall mounted boiler,
smooth enamelled tubing
Storage cylinder, enamelled steel
Magnesium anode
Casing lid
Outer casing

Fig. 1/ 2, page 65)

Type plate

Description
Type
Serial number
Useful capacity (overall)
Standby heat loss
Volume heated by immersion heater
Year of manufacture
Corrosion protection
Maximum DHW temperature
Maximum heating water flow temperature
Maximum solar flow temperature
Electrical power cable
Continuous output
Volumetric flow rate to reach continuous output
Volume with 40 °C draw-off temperature heated by immersion
heater
Maximum operating pressure on the domestic water side
Maximum design pressure (cold water)
Maximum operating pressure of heating water
Maximum operating pressure, solar side
Maximum operating pressure on the domestic water side
(CH only)
Maximum test pressure on the domestic water side (CH only)
Maximum DHW temperature with immersion heater
Product information
49