14
ENG
“UE BASIC” +030220630 - rel. 2.2 - 07.11.2008
4. ELECTRICAL CONNECTIONS
4.1 Preparing the electric cableways
Models UE001 to UE018
outside unit, bottom view
inside unit, top view
1
3
2
1
2
3
Fig. 4.a
Models UE025 to UE065
outside unit, side view
3
2
1
Fig. 4.b
Key to Figs. 4.a & 4.b:
1.
power cable inlet;
2.
optional utility cable inlet (after drilling).
3.
probe cable inlet. On models UE001 to UE018, remove the plastic “tab”
and use it to secure the cable (held in place by the screws provided).
4.2 Power cable connection
Before making the connections, ensure that the machine is
disconnected from the mains power supply.
Check that the power supply voltage of the appliance corresponds to
the value indicated on the rating plate inside the electrical panel. Insert
the power and ground connection cables into the electrical panel
compartment using the tear-proof cable gland supplied, or through the
cable gland with cable stop, and connect the ends to the terminals (see
Fig. 4.c). The humidifi er power line must be fi tted, by the installer,
with a disconnecting switch and fuses protecting against short circuits.
Table 11.a lists the recommended cross-sections of the power supply
cable and the recommended fuse ratings; note, however, that this data
is purely a guide and, in the event of non-compliance with local
standards, the latter must prevail.
Note:
to avoid unwanted interference, the power cables should
be kept apart from the probe signal cables.
Single-phase models
Three-phase models
humiSt
eam
GND
L N
humiSt
eam
GND
L1 L2
N
L3
1
Fig. 4.c (view inside unit, electrical compartment)
Important
Important
:
connect the yellow-green cable to the earth point
(GND).
1
In the 400 V three-phase models, also connect the neutral (N)
4.3 Steam production control signals (M2.1 -
M2.7)
Depending on the type of signal used, steam production can be enabled
and/or managed in diff erent ways (ON/OFF or modulating)..
Steam production is enabled by keeping terminals M2.4 and M2.5
closed.
1. Enable steam production using:
HUMIDISTAT (ON/OFF action)
connect inputs M2.2 and M2.3 (production request) to a humidistat;
•
jumper inputs M2.4 and M2.5 (enable);
•
set parameter A0=0 to enable the ON/OFF action.
•
M.2.1M.2.2 M.2.3 M2.4 M.2.5 M.2.6 M.2.7
Fig. 4.d
