Water Connections; Condensate Discharge Connections; Electrical Wirings - AERMEC Omnia UL 11 N Manual De Instrucciones E Instalación

CONNECTIONS
The water, condensate discharge and electrical circuit ducts must be provided for.

WATER CONNECTIONS

- Make the water connections. To help
the bleeding of air from the coil, you
are advised to connect the water
outlet pipe to the fitting at the top;
any inversion will not jeopardise the
proper functioning of the unit.
AIR
CONDENSATE DISCHARGE CONNECTION
During cooling operation the indoor
unit removes humidity from the air. The
condensate water must be eliminated
by connecting the appropriate
discharge coupling to the piping of the
condensate discharge system.
NB: Before connecting the condensate
discharge, use a tool to knock out the

ELECTRICAL WIRINGS

WARNING: check that the power
supply is disconnected before carrying
out any procedures on the unit.
In the specific case of electrical wirings,
the following must be checked:
- Measurement of the electrical system
insulation strength
- Continuity of the protection wires
- The electrical wirings must be made in
compliance with the wiring diagrams
The unit must be connected directly
to an electrical outlet or to an
independent circuit.
OMNIA fan coils are powered with a
current of 230V ~ 50Hz with an earth
connection, but the line voltage must
remain within the tolerance value of
±10% compared with the nominal value.
The electrical power cable must be of
the H07 V-K or N07 V-K type with
450/750V insulation if inside a tube
or raceway. Use cables with double
H5vv-F type insulation for visible
cable installation. All the cables
must be piped or ducted until they
are inside the fan coil. The cables
leaving the pipe or raceway must be
The position and diameter of the
water connections are shown in the
dimensions.
You are advised to adequately
insulate water lines, or fit the auxiliary
condensate drain tray (available as an
Coil connections
OMNIA
Omnia UL
CONNECTIONS
OUT = Water outlet coil connection
D
IN = Water inlet coil connection
AIR = Coil air drain valve
SC
D = Coil drainage valve
SC = Condensate discharge (male Ø 16mm)
diaphragm of the tray on the water
connections side.
Seal the unused drainage hole.
The condensate drain network must
be properly scaled and the piping
situated in such a way as to keep
an adequate slope along the route
(min. 1%). If condensate is discharged
positioned in such a way that there
are not traction or twisting stresses
and they are anyway protected from
outside agents.
Stranded cables can only be used with
crimping terminals. Check the wire
strands are well inserted.
The wiring diagrams are subject to
continuous updates, so it is essential
to use those on the machine as your
reference.
For all the connections, follow the wiring
diagrams supplied with the device and
shown in this documentation.
In installations with a 3-way valve, the
minimum water temperature sensor
must be relocated from its standard
mounting in the coil assembly to the
delivery hose upstream of the valve.
If you need to relocate the water
temperature probe, the standard probe
must be replaced with an SW3N
accessory probe, fitted with a cable of
suitable length.
The connections must be made with the
connectors on the electronic card on
the side of the fan coil (protected by a
plastic box).
11 N 16 N 26 N
Ø 1/2" 1/2" 1/2"
IULNIJ 1711 - 4528500_01
accessory), to prevent dripping during
the cooling function.
Test the seal on the water
connections.
36 N
1/2"
into the sewage system, install a
siphon to prevent the return of
unpleasant odours into the room.
Test the condensate discharge seal.
WARNING: the diagram showing
the connections of the electronic card
to the control board is printed inside
its box cover.
- Connect the power cables.
- Connect the earth cable.
- Connect the electric cables of the
valve accessory (if installed).
- Connect the network cables (if
connected to a network).
- Connect the cables for an external
contact (if envisaged).
- Check all the connections and relative
cables are well fixed.
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