133
cod. 3541T620 - Rev. 05 - 04/2022
EN
DORA
90 LT - 120 LT
6.3.2 Environmental conditions for operation
PROHIBITION
The device cannot operate in
rooms classified as environ-
ments with an explosive atmos-
phere or at risk of fire.
ATTENTION
The general operation of the de-
vice is guaranteed by observing
the environmental conditions in-
dicated.
ATTENTION
The device was not designed to
be installed outdoors, but to be
used in a “closed” environment
not exposed to bad weather with
an ambient temperature between
+4 °C / +43 °C.
For the correct operation of the device it is necessary that its
positioning meets the following requirements:
• away from heat sources,
• away from direct sunlight,
• away from air conditioning systems,
• in a dust-free environment.
The environmental conditions for operation are shown in the
table below.
Ambient external air temperature (min. / max.)
-5 °C / +43 °C
6.3.3 Water hardness
The device must not operate with water hardness of less than
12°F. Conversely, if the water hardness is very high (over
25°F), use a suitably calibrated and monitored water softener,
because the residual hardness must not drop below 15°F.
6.4
PREPARATION OF THE INSTALLATION SITE
Proper operation affects the life of the device and its compo-
nents, but above all it affects the efficiency of the system. We
recommend that you carefully follow the instructions below; our
Technical Assistance Office is available for any clarifications on
the matter.
OBLIGATION
R290
During the design and construc-
tion phase of the systems, local
rules and regulations must be
complied with.
The air inlet and outlet of the ap-
pliance must be channelled to
the external environment as in-
dicated in paragraph 6.6 on page
134.
The product must be installed in a suitable place, i.e. to allow
normal use and adjustment operations as well as routine and
extraordinary maintenance.
The place where it will be operated must, therefore, be pre-
pared according to the values shown in fig. 29.
fig. 29 - Minimum spaces
The room must also be:
• Equipped with adequate water and electricity supply lines;
• Prearranged for the condensation water discharge connec-
tion;
• Prearranged with adequate water drains in case of boil-
er damage or safety valve intervention or the breakage of
pipes/connections;
• Equipped with possible containment systems in case of se-
rious water leakage;
• Sufficiently illuminated (where required);
• Protected from frost and keep dry.