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Warnings
Do not lift or carry the HIU by its cover, care should be taken, when lifting the unit, not to damage any of
the components.
The unit must be installed and connected by professional plumbing and heating engineers only.
Only use original HERZ spare parts when maintaining the HIU.
Check all connections for leakages prior to starting up the heating system.
The user must not make any technical changes to the HIU. Otherwise HERZ will not assume liability for any
resulting damage.
The heat meter and sensor probes (if installed) should be fitted with anti-tamper seals by the energy
provider. The HIU should not be used by the end user if the seals are not intact and should be reported to the
energy provider or building management company/landlord.
If the property is to be left unoccupied for a prolonged period, it is recommended that the HIU domestic
pipework is isolated and drained.
Surfaces of individual components, connections and leaking water can be very hot and cause severe burns
and scalds.
Before the start of any dismantling work the isolation valves must be closed and water drained
out. Out flowing water is likely to be hot and under high pressure. Take appropriate precautions.
If a fault occurs, please contact the installer. Do not attempt to carry out repairs yourself.
Packaging
The following points should be observed during unpacking:
Check the delivery immediately upon receipt for completeness and transport damage.
In the event of transport damage, the delivery should only be accepted conditionally.
Carefully unpack the unit taking care not to damage the contents, sharp implements should not be used.
Ensure that all packaging material is removed and the unit is clean from all materials to avoid anything
preventing the unit from operating correctly.
Do not use damaged components for assembly.
Recycling and Disposal
The HIU as well as the packaging are mainly made of recyclable raw material.
The HIU and accessories should be disposed of sensibly and properly and not in household waste.
Disposal of the packaging is the contractor’s responsibility.
