14
ENG
“optiMist” +0300065EN- rel. 1.1 - 29/01/2013
3. ELECTRICAL
CONNECTIONS
3.1 Wiring
inlets
1
2
Fig. 3.a
1.
power supply
2.
control terminal block
3.2 Power
supply
Depending on the model:
•
EC*******0 voltage 230Vac 50Hz
•
EC*******U voltage 230Vac 60Hz
N L
230 Vac
PE
Fig. 3.b
Important:
The cables must conform to local standards.
Install a power switch outside the humidifi er to completely isolate
the mains power supply, with earth fault protection (30 mA).
3.3 Connections to the pCO
The connections listed below are to be made directly to the pCO
terminals.
J2
B1 Main humidifi cation/winter (DEC) control probe
B2 Humidifi cation/winter (DEC) limit probe
B3 Recovery activation signal (IEC) signal 0-10V
J3
B5 AUX temperature probe (only NTC or PT100)
J4
Y1 0-10V signal output for controlling another cabinet
J6
B6 Main evaporative cooling/summer (IEC) control probe
B7 Evaporative cooling/summer (IEC) limit probe
Tab. 3.a
3.4 Connections to the terminal board.
PEN/GO
Cabinet and pump / On-Off remote enabling
DEC/GO
Humidifi cation control signals from external voltage-free
contact, humidistat type ON/OFF
IEC/GO
Evaporative cooling control signals from external voltage-free
contact, thermostat type ON/OFF
PR/GO
Humidifi cation/winter or evaporative cooling/summer priority
REC/GO
Recovery activation (IEC) signal, type ON/OFF
ROAL/GO Water treatment system alarm signal
ROW/GO
Water treatment system anomaly/warning signal
BKUP/GO Backup cabinet signal
FLUX/GO Air fl ow switch
SC/GO
Droplet separator clogging signal from diff erential pressure switch
RWL/GO
Recirculation water level
AF/C13
Antifreeze activation output
HBT/C12
Sign of life, this cabinet
RWP/GO
Recirculation water recovery pump output activation
ROEN/GO Water treatment system control
AL/C8
Cumulative alarm relay output
NO1/GO
Solenoid valve (optional) step 1
NO2/GO
Solenoid valve (optional) step 2
Tab. 3.b
3.5 Remoto
ON/OFF
Cables
• up to 30 m: two-wire cable AWG20/22
electrical specifi cations for the contact voltage-free contact
PEN
G0
Fig. 3.c
Key:
Remote pump ON/OFF
CONNECTIONS
Cabinet
Remote ON/OFF
PEN (pump enabling)
NC/NO
G0A
COM
Please Note: the unit is supplied with jumpers on the PEN-G0A
contacts.
3.6 Control signals from external voltage-free
contact, humidostat or thermostat type
ON
/
OFF
(control
C
)
For humidifi cation / direct evaporative cooling (DEC):
DEC
G0
Fig. 3.d
Cabinet
DEC
NO (OFF) /NC (ON)
GO
COM