105
cod. 3541T620 - Rev. 05 - 04/2022
EN
DORA
90 LT - 120 LT
ATTENTION
• Water can drip from the dis-
charge pipe of the overpres-
sure device; leave this pipe
open to the atmosphere.
• The decompression device
must be operated regularly
to remove limescale depos-
its and to check that it is not
blocked.
• Connect a rubber pipe to the
condensate drain, taking care
not to force too much so as
not to break the drain pipe
and refer to par. “6.7.1 Con-
densate drain connection” on
page 136.
ATTENTION
For the correct operation of the
device, it is essential to install a
0.7 MPa safety unit (7 bar, light
series supplied as standard) on
the cold water inlet.
The drain hose is connected to
the pressure relief device in-
stalled below and in an environ-
ment not subject to freezing.
ATTENTION
Use only connecting pipes (not
supplied), rigid and resistant to
electrolysis both at the inlet of
cold water and at the outlet of hot
water from the device.
ATTENTION
The device must be installed in
compliance with the regulations
on electrical systems in force in
the country of installation.
Refer to par. “6.8 ELECTRICAL
CONNECTIONS” on page 137
and par. “6.8.1 Remote connec-
tions” on page 137.
ATTENTION
Connect the device to an efficient
grounding system.
ATTENTION
Do not use extension cords or
adapters.
ATTENTION
For connection to mains and
safety devices, comply with the
IEC 60364-4-41 standard.
ATTENTION
Fixed devices are not equipped
with means of disconnection
from the mains with a separation
of the contacts on all poles ca-
pable of guaranteeing complete
disconnection in the
overvolt-
age category III
, the instruc-
tions indicate that the means of
disconnection must be integrat-
ed in the fixed wiring in compli-
ance with the wiring regulations.
ATTENTION
The device must be protected by
an adequate differential switch.
The type of differential switch
should be selected by assess-
ing the type of electrical devices
used by the system as a whole.
ATTENTION
DO NOT TAMPER WITH THE
POWER CORD.
If the power supply cable is dam-
aged, it must be replaced by the
manufacturer or the technical as-
sistance service or in any case
by a person with similar qualifi-
cations, in order to prevent any
risk.
