Carel UU01F1, User Manual, Page: 46 / 72

12
ENG
“Ultrasound for fancoil” +0300059PT - rel. 1.6 - 06.10.2020
6. ELECTRICAL CONNECTIONS
WARNING: 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.
NOTICE: correct wiring of the ultrasound humidifier is the responsibility of the
installer of the final appliance manufacturer, as required by IEC EN 60335-1.
6.1 Electrical installation
Main board
Fig. 6.a
Key
A Power supply input to the board from the transformer 24V
B Supply and controller cable driver;
Power supply input to the board from the transformer 50V
C valve power cables (L drain / R fill)
D configuration dipswitch
E TAM (current transformer) input for measuring current on external fan
F (not use for this application)
G TH temperture and 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 rectified , max. 3W) (M15.3-M15.4)
N auxiliary card connection
Electrical connections
G
N
D
G
N
D
+21V
F
L e v e l fl ow
swit c h
F an
+ G N D
P ie z oe l e c tri c
transd uc er
P oo l
D ri v er
D
D ri v er
C ontro l
b oard
D rain
v a lv e F i ll
v a lv e
LE V EL FLOW SWITCH
F AN
H
I
GH LE
V.
LOW LE
V.
230 V a c
50 V a c
L N
24 V a c
L N
L N
24V a c
D ri v ers
C A B
1 2 3 4
5 6 7 8
{
50V a c F i ll D rain
Fig. 6.b
6.2 Internal electrical connections
1.
Connect the wires from connector C to the fill and drain valves;
2.
Connect the power and control cables to the driver card(s) positioned
under the tank, in accordance with the wiring diagram and the
screen printing on the cables (photo).
48 (1)-[ 6 ]
48 ( 2 )-[ 7 ]
48 (1)+[ 2 ] 48 ( 2 )+[ 3 ]
Fig. 6.c
6.3 Power supply
•
Check that the power supply voltage of the appliance corresponds to
the value indicated on the rating plate.
•
Connect the 50 Vac transformer output to terminals 1 and 5 on
connector B;
•
Connect the 24 Vac transformer output to the terminals on connector A;
•
Connect the transformer input cable to the mains. The humidifier
power line must be fitted with a disconnect switch.
NOTICE: to 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
humidifier is ready for operation.