Warranty, Guarantee And Liability - eta FWM-E Operating Instructions Manual

Warranty, guarantee and liability

2 Warranty, guarantee and liability
Installation in a dry, frost-proof room
A dry, frost-proof room is required for the installation.
Observe the drinking water ordinance
In terms of the cold water, the chemical, physical and
bacterial limits stated in the applicable national
drinking water ordinance must not be exceeded.
See 9.1 "Quality" for more information.
Calcification
Potential calcification of the fresh water module is
excluded by the warranty. In the case of water with par-
ticularly high scale-forming properties, water softening
or regular descaling may be necessary.
Safety valve for the drinking water line
Before each closed drinking water heater (=TWE /
tank) a membrane safety valve is to be installed in
accordance with DIN 1988 and 4753, Part 1 and
TRD 721. This valves opens automatically when a set
operating pressure is exceeded (6, 8, 10 bar), and
after a pressure reduction it closes again automatical-
ly.
Except flow heaters with a nominal volume of less than
3 litres.
The ETA fresh water module falls under this
exception rule. That is why no additional safety
valve is required.
With the optional circulation set, however, a
safety valve is required on the drinking water side
(10 bar) and that is why it is already installed at the
factory. This must not be blocked nor removed.
pH value between 8 and 9
The pH value of water used to fill the heating system
must be between 8 and 9.
Expanding the control system
Only components provided by us may be used for
expanding the control system, unless these are
generally available standard devices, such as thermo-
stats.
Proper installation
The installing contractor is liable for proper installation
according to the corresponding installation instructions
and the relevant rules and safety regulations. If you as
customer have installed the heating system partly or
entirely without relevant training and in particular
without up-to-date practical experience, without having
the installation checked by a trained and responsible
expert, we exclude defects in our delivery and conse-
quential damages resulting from this cause from our
warranty, guarantee and liability.
Repairs
Repairs are only permitted using spare parts provided
by us. The only exceptions are commonly available
standard parts such as electrical fuses or fastening
materials, provided such parts have the necessary
features and do not compromise the safety of the
system.
Repair of defects
For repairs of defects carried out by the customer or by
a third party, ETA shall only bear the costs or remain
obligated by warranty if this work was approved in
writing in advance by the customer service of ETA
Heiztechnik GmbH.
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