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Tab. 2 - Sound pressure levels
Model
Octave band frequency (Hz)
Sound
pressure
ll
M
o
d
e
l
31.5 63 125 250 500 1000 2000 4000 8000
p
level
[dB(A)]
PKS3
Indoor, free field at 2 m
in front of the unit
49 56 62 58 55 54 53 53 51 61
PKS3
Outdoor, free field at
2 m in front of the unit
50 51 49 54 51 51 47 44 37 55
PKS4
Indoor, free field at 2 m
in front of the unit
49 56 62 58 55 54 53 53 51 61
PKS4
Outdoor, free field at
2 m in front of the unit
50 51 49 54 51 51 47 44 37 55
2 - Installation
For a correct installation proceed as follows (Fig. 4):
S Provide the unit with cornice protection elements
(these can be supplied as optional), using the proper
holes and the self-tapping screws with 3.5 mm diamĆ
eter.
In order to avoid that water filters inside the containĆ
er, provide it with an adhesive rubber gasket.
S Fix the cornice to the shelter wall by means of M4
screws with anchor.
S Fix the lower cornice protection element by means of
two M4 screws with anchor.
S Provide the unit roof with the fixing bracket to the
wall with two self-tapping screws with 3.5 mm diamĆ
eter.
3 - Electrical and kit connections
Before performing any operations on the electric parts,
make sure that:
S all electrical components are undamaged;
S all terminal screws are tight;
S the supply voltage and frequency are as indicated on
the unit;
S the switch QS1 is in open position (OFF);
S the automatic switch QS2 on the outer clamps of the
inverter (if installed) are off;
S there are no components under voltage.
3.1 - Electrical connections
(see the wiring diagram)
The electrical connections (power supply 230/1/50 and,
for emergency power supply (48 and 24 Vdc) will be carĆ
ried out from the roof of the unit by means of some proĆ
per holes.
S Let the electrical power supply cable (not supplied by
us), pass through the hole made on the unit roof.
Note: For the power supply use a screened cable
(minimum section indicated in Tab. 4).
It is advisable to keep the mains power supply cable
as far as possible from the other cables coming out of
the inverter (optional).
Connect the 230V/1/50 Hz line to the main switch
QS1 placed inside the electrical panel.
S Concerning the alarm contacts available in the differĆ
ent versions, these can be found on the terminal
board in the electrical panel.
For the alarm description see Chapter 6 and the
manual of the installed control.
S To connect 2 or more units installed in the same conĆ
tainer and provided with the MICROFACE control,
with HIROMATIC interface, use the HIROBUS
cable (supplied with the unit) by connecting it as
shown in the wiring diagram. See the Microface and
Hiromatic manual for the configuration of the
Stand-by units.