Electrical Connections; Electrical Installation; Power Cable Connection - Carel Humisonic User Manual

ENG

4.1 Electrical installation

Board connections
Key to Fig. 4.a:
A board power supply input from transformer (24/36V for 230V transfor-
mer or 24/30V for 115V transformer)
B transducer power cable;
C valve power cables (L drain / R fi ll)
D confi guration dipswitch
E TAM (current transformer) input for measuring current on fan neutral
F trimmer connection to adjust set point (optional)
G TH humidity probe connection (IIC digital serial, part no.:
HYHU000000) optional.
M14 remote ON/OFF (M14.1-M14.2)
M11 RS4845 serial (M11)
M15 - N.O. alarm relay (M15.1-M15.2)
- 30 Vdc output (24 Vac rectifi ed , max. 3W) (M15.3-M15.4)
N auxiliary card connection
Dipswitch confi guration:
before fi tting the tank.
ON
1 2 3
1. Communication
OFF Serial 485 Carel/Modbus
ON tLAN
2-3 tLAN address (if 1 is ON)
OFF/OFF - -
OFF/ON address 1
ON/OFF address 2
ON/ON address 3
4 Serial 485 / tLAN baud rate
OFF 19200
ON 9600
5-6 Humidity Setpoint
OFF/OFF 50 %rH
OFF/ON 30 %rH
ON/OFF 40 %rH
ON/ON 60 %rH
7 TAM
OFF disabled
ON enabled
8 Production transducer management (only for 4-transducer version)
OFF --> parallel management (modulation of all 4)
ON --> if demand is less than 50%, only one pair of transducers opera-
tes, alternately
"Ultrasound humidifi er for fan coils" +0300056EN - rel. 1.5 - 24.06.2015

4. ELECTRICAL CONNECTIONS

Fig. 4.a
Tab. 4.b
confi guration must be performed
4 5 6 7 8
Fig. 4.b
Tab. 4.c

4.2 Power cable connection

Correct wiring of the ultrasound humidifi er is the responsibility of the
fi nal appliance manufacturer, as required by IEC EN 60335-1.
Before performing the electrical connections, make sure that the unit 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 affi xed to the side of the product.
Connect the transformer output cable to the electronic board (terminal
block A in Fig 4.a). Connect the transformer input cable to the mains.
The humidifi er power line must be fi tted with a disconnect switch.
Note: avoid unwanted
interference, the power cables
should be kept separate from
the probe signal cables.
Once the electrical and water
connections have been
completed, the humidifi er is
ready for operation.
4.3 Main board connections
Depending on the type of signal used, atomized water production can
be enabled and/or managed in diff erent ways (ON/OFF or modulating).
HUMIDOSTAT OR REMOTE CONTACT (ON/OFF action)
Production is enabled by closing terminal M14.
M14 can be connected to a switch, a humidistat or a controller (voltage-
free contact, max 5 Vdc open, max 7 mA closed).
TH HUMIDITY PROBE (Optional)
If the TH humidity probe is connected to the G terminal (fi g 4.a) atomized
water production starts ifi :
•
The terminal M14 is closed;
•
The humidity value measured by the probe is below the setpoint
(preset at 50%rH and modifi ed via dipswitches 5-6, see Tab.4.a)
The setpoint can be changed by connecting the trimmer (optional) to
F terminal (fi g 4.a)
485 SERIAL CONNECTION
Carel/Modbus protocol
RS 485
12
Main Supply
Fig. 4.c
M 14
Remote
ON/OFF + GND
Fig. 4.d
M 11
GND TX
RX
Fig. 4.e