Terms Of Guarantee - Ariston NIMBUS EXTERNAL UNIT 04 kW Technical Instructions For Installation And Maintenance

GUARANTEE
The warranty is only valid if the appliance is installed by a qualifi ed
technician.
Damage as a result of the following causes void the guarantee:
Abnormal installation environment conditions:
• Placing the internal unit outside the home
• Placing the internal unit in a location which is subject to bad
weather or frost exposure
• Supplying the system with rainwater, well water, or with abnormally
hard water or water which is not compliant with applicable
regulations
• Replacement installation of systems and components with
manufacturing defects.
In the event of damage being discovered on the system, it will be sent
to one of our Service Centres, once our Technical Services have been
advised.
Damage caused by incorrect installation, transport, packaging
and positioning following collection by the distributor will be the
responsibility of the installer.
The repair or replacement of system components can not in
any way be refunded, if it happened under any of the following
circumstances:
• Various damages caused by shocks or electrical failures during
handling of the product, after it leaves the production establishment
• Damage caused by water leaking from the internal unit that is
avoidable through immediate product repair
• Damage caused by system exposure to overvoltages
The warranty applies to internal unit and external unit, only where
the hydraulic and electronic components of both remain intact.
The guarantee does not apply in cases where the installation does
not conform to applicable regulations and standards, as well as to
professional standards, and, more particularly, in the event of:
• The absence or incorrect installation of the safety unit
• Safety unit installation that does not comply with applicable
standards, or use of a damaged safety unit
• Changes made to the safety unit as a result of hydraulics works
• Abnormal corrosion of hydraulic components due to incorrect
connections (iron-copper direct contact)
• Faulty electrical connection which does not conform to applicable
installation regulations, incorrect grounding, using cables with
an insuffi cient cross-section, non-adherence to the connection
diagrams provided
• Switching on the system before hydraulic fi lling
The guarantee does not apply in cases of insuffi cient maintenance:
• Abnormal build-up on the heating elements and the safety devices
• Lack of safety unit maintenance for pressure reduction
• Frame subjected to aggression by external agents
• Changes made to the original system without advising the
manufacturer or use of non-original spare parts
44 /
CE mark
The CE mark guarantees that the device conforms to the
following directives:
- 2004/108/EC concerning electromagnetic compatibility
- 2006/95/EC concerning the safety of electrical equipment
(LVD)
System water characteristics
Ensure that the system is supplied with water with a maximum
hardness of 20° F.
For areas where the water is particularly limestone-rich, ensure
that the use of a softener does not in any way affect the
previous guarantees, provided that the part is professionally
installed and subject to regular inspections and maintenance.
In particular, the hardness of the water supplied to the system,
must never be below 12° F.
Where fi lling water is aggressive (we advise you to keep the pH
between 6.6 and 8.5), ferruginous, or hard, use treated water
to prevent build-up, corrosion, and damage to the system.
We remind you that even a slight quantity of impurities in the
water may decrease the performance of the system.
The fi lling water used absolutely must be treated in the case of
high capacity installations (high volumes of water) or in the case
of frequent additions of water in order to maintain a constant
level of liquid in the system. In the event that you need to carry
out cleaning of the installation, you must subsequently fi ll the
entire system with treated water.
Ensure that the maximum water supply pressure level does not
exceed 5 bar. Otherwise, install a pressure reducer.
NOTE:
for the boiler installation, operation and maintenance instructions,
please see the documentation supplied with the boiler.