14
6 - ELECTRICAL CONNECTIONS
The complete system is made of the following modules.
Some are optional so they could not be present.
Some are supplied in packages separated by the unit: verify the shipping documents.
MAIN ADJUSTMENT MODULE
STANDARD ON THE UNIT - code C5110760
It controls unit (inlets, outlets, configuration parameters)
EXPANSION PLUG-IN MODULE
code C5110767 - OPTIONAL
Plugged-in on the main module.
It controls some inputs and outputs.
E
c
o
21.0
C
l
e
a
n
REMOTE
ECO
AUTO
STANDARD ON THE UNIT
It enables the thermo-adjustment according to the temperature detected by the probe on the room
thermostat, instead of according to the temperature detected by the probe on the unit intake..
LN9192
S
T
A
T
U
S
S
E
T
A
L
A
R
M
2
1
REMOTE KEYPAD
OPTIONAL - Code PE6B0017
It remotely repeats all functions available on the machine keyboard.
81234567
CN2
1210911
16
+5V
13 14 15
gnd
1917 18 2120
SERIALE
TTL / RS485
CN1
gnd
12VAC
+-
SERIAL CONVERTER TTL/RS485
The supervision services are available, with standard modbus protocol. Plugged-in in the main
module on the electric board (see lay in the wiring diagram). It is possible to connect up to 127
units with a single supervision system.
The connection with a PC must use a RS485/232 converter; the serial line RS232 can be max. 10-
m long.
CONNECTIONS:
refer to the wiring diagram and to the SERIAL LINES/DATA paragraph
SPECIFICS FOR THE RS485 CONNECTION
cable with 2 twisted wires + screen
the serial line RS-485 can be max. 1000-m long.
12 V AC
CN1 CN1
1918 20 21 2018 19 21
RS-485
RS-232
gnd
-
+
Supervisore
TTL /
RS485
+
-
ALLE ALTRE
UNITA’
12 V AC
gnd
TTL /
RS485
-
gnd
+
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