Carel humiSonic, User Manual, Page: 46 / 72

12
ENG
Direct version for room applic. +0300062EE - rel. 1.4 - 24.09.2020
5. ELECTRICAL CONNECTIONS
5.1 Wiring requirements
A
B
D
C
Fig. 5.a
1. Unscrew the screw (A) and remove the cover (B);
2. If the humidifier is wall-mounted/installed on a horizontal support,
remove the corresponding metal knock-out using cutting nippers on
the bottom/rear panel (C);
3. Fit the cable gland (D).
5.2 Electrical installation
WAR N I N G: electric shock hazard. Before making the electrical
connections, the appliance must be disconnected from the mains
power supply and must be prevented from being powered on.
Electrical disconnection must be verified by measurement.
NO TICE:
• check that the unit’s power supply voltage corresponds to the rated
data shown on the product label;
• do not power on the unit if tilted or upside down: the transducers may
be damaged.
Connect the power cable to the terminal block through the cable gland.
L N
PE
Fig. 5.b
NO TICE:
to avoid unwanted interference, the power cables should be
kept separate from the probe signal cables.
The humiSonic electronic control board in fact comprises two boards,
a main board (1) installed horizontally, and an auxiliary card (2) installed
vertically.
J8 M9
M 1 0
M 15
M 11 M 14
B OTTO M
B O ARD 1
B O ARD 2
J17
Fig. 5.c
MAIN BOA R D
C A B
D
F
G
N
E
M 11 M 15 M 14
G
G0
Fig. 5.d
Key:
A Board power supply input from transformer 24 V
B Transducer control
C Valve power (L drain / R fill)
D Configuration dipswitches
E RESERVED
F Power ON/OFF switch lights
G TH temperature and humidity probe connection (IIC digital serial, part no.:
HYHU000000) built-in on part numbers UU**R*AS*1.
M14 Remote ON/OFF (M14.1-M14.2)
M11 RS4845 serial (M11)
M15 Front fan power
N Auxiliary card connection
AUXILIA R Y CA R D
M9 M10 J8
1 2 3 4 5
J17
C OMMON
NO
Tx/Rx GN D
tLan
Fig. 5.e
J8 tLAN terminal connection (optional)
M9 tLAN auxiliary serial connector
M10 M10.1 - + proportional control signal/probe/humidistat
M10.2 - GND reference signal
M10.3 - +21 Vdc for power to active probes
M10.4 - Alarm relay - CO
M10.5 - Alarm relay - NO
J17 Reserved
Tab. 5.a
Dipswitch configuration: configuration must be performed before
switching on the humidifier (default position shown in Fig. 3.f ).
2 3 6 4 7 5 1 8
ON
Fig. 5.f
1. Communication 5-6 Humidity set point
OFF Serial 485 Carel/Modbus OFF/OFF 50 %rH
ON tLAN OFF/ON 30 %rH
2-3 tLAN address (if 1 is ON) ON/OFF 40 %rH
OFF/OFF - - ON/ON 60 %rH
OFF/ON address 1 7 RESERVED
ON/OFF address 2 8 Transducer prod. management
ON/ON address 3 OFF parallel
4 Serial 485 / tLAN baud rate ON series
OFF 19200
ON 9600
Tab. 5.b