Bedienungsanleitung Watts HIU 2 series (Seite 3 von 18) (Englisch)

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HIU2-IM-DE-W-UK-04-2021-Rev7 | Part no. 10078860 3

ENGLISH

2 Safety

2.1 Depiction of safety information

DANGER indicates an imminent danger

that may cause serious physical injury or

death if the appropriate safety precau-

tions are not in place.

WARNING indicates a danger arising

through incorrect behavior (e.g. misuse,

disregarding notices, etc.) that may cause

serious physical injury or death.

CAUTION indicates a potentially danger-

ous situation that may cause minor or

slight injuries if the appropriate safety

precautions are not in place.

NOTICE indicates a situation that may

cause material damage if the correspond-

ing precautions are not taken.

2.2 Important safety information

• Before using the device, read this operating manual

through carefully.

• Only connect the HIU 2 to a power source that corre-

sponds to the mains voltage specified on the rating plate of

the HIU2.

• The power supply to the HIU2 must be disconnected prior

to maintenance, cleaning and repair work.

• Maintenance, cleaning and repair work may be carried out

by trained specialist personnel only.

• The HIU2 must not be used if it is damaged or if the HIU2

is no longer operating correctly. In this case, contact your

specialist dealer immediately.

• Observe the maintenance instructions and intervals.

• Protect the HIU2 from the influences of weather.

• Never use the HIU2 outdoors.

• The unit may be used only in accordance with its intend-

ed use.

2.3 Intended use

Ready-to-install compact, decentralized heat interface unit for

hygienic domestic hot water generation and heat distribution

in single-family houses and townhouse systems as well as for

use in multi-story apartment blocks.

The HIU2 is not intended to be operated by people (includ-

ing children) with physical, sensory or mental disabilities, nor

by people with insufficient experience or previous knowledge.

2.4 Foreseeable misuse

The following is considered to be foreseeable misuse:

• Operating the HIU 2 contrary to the specifications

• Improper use of the HIU2

• Modifications to the HIU2 that were not agreed with the

manufacturer

• Use of replacement or wear parts that were not approved

by the manufacturer

• Operating the HIU2 outdoors (parts and components are

not UV resistant)

• Use of prohibited media

2.5 Responsibilities of the operator

The operator must ensure that:

• the HIU2 is only used for its intended purpose

• the HIU2 is installed, operated and maintained accord-

ing to the specifications in the Installation and Operating

Manual

• the HIU2 is only operated according to local regulations

and occupational health and safety regulations

• all precautionary measures have been carried out to avoid

dangers originating from the HIU2

• all precautions for first aid and fire suppression are carried

out

• only authorized and trained users have access to the HIU2

and operate it

• users have access to this installation and operating manual

at all times

2.6 Personnel groups

Only qualified persons may install and operate the HIU 2 or

perform maintenance work.

Operator

An operator is deemed to be qualified if they have read these

operating instructions and understood the potential hazards

associated with improper behavior.

Fitter/commissioning engineer

A plumber or commissioning engineer is in a position, taking

into consideration the applicable standards, provisions, regu-

lations and laws and his/her technical training and technical

knowledge, to carry out work on the HIU 2 and to detect and

prevent potential hazards.

2.7 Information on the operating environment

Limescale deposits (from hard water) and corrosion, as well

as chemical and physical reactions, can cause damage to the

home station.

The selection of material for the plate heat exchanger (copper

or stainless steel) must be checked with reference to the water

quality (corrosion resistance).

The system planner is responsible for evaluating these

parameters and taking appropriate precautions.

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