Table of Contents
Advertisement
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
minimizing 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 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.
HIntended use
This product is intended for use in sealed heating systems in residential
buildings.
Any other use is considered as not intended. Liability will not be assumed
for any resulting damage.
Pre plumbed cylinder – 6 721 852 928 (2023/04)
Explanation of symbols and safety instructions
HInstallation, commissioning and service
The product may only be installed, brought into operation and
maintained by trained personnel.
▶ Use only original spare parts.
HElectrical work
Electrical work must only be carried out by a competent person in
relation to the electrical safety requirements of the relevant UK
regulations.
▶ Before starting electrical work;
– Ensure that the electricity supply is safely Isolated and secured to
prevent inadvertent re-connection.
Information on safe isolation can be found in the Health and
Safety Executive guidance HSG85.
– Using test equipment approved to GS38 to confirm that the
electricity supply is disconnected.
– Before touching live parts: Wait at least five minutes to discharge
the capacitors.
▶ Refer to the manufacturer's information when installing non
Worcester components and systems to the Worcester appliance.
HConnection to supply mains
▶ There are two mains supply cables to this product
▶ Means to safely disconnect the unit from supply mains must be
incorporated.
Connection to the water supply (cold main)
This unit is designed to be permanently connected to the water supply.
The connection must not be established with a hose set.
The maximum inlet pressure of the water is 10 bar (relative pressure).
The minimum permissible inlet pressure of the water is 1,5 bar.
HHandover 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:
– Modifications and repairs must only be carried out by an approved
contractor.
– Safe and environmentally compatible operation requires
inspection at least once a year and proper 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.
▶ Leave the installation instructions and the operating instructions with
the user for safekeeping.
2
Regulations
Installation
The pre-plumbed cylinder is specifically designed to be installed in
conjunction with an air source heat pump.
Unvented cylinders are a controlled service as defined in the latest
edition of the building regulations and should only be carried by a
competent qualified installer.
The relevant regulations are:
England and Wales - Building Regulation Part G Section G3
Scotland - Technical Standard Section 4
Northern Ireland - Building Regulations Part F
3
Advertisement
Table of Contents
