thermital AF ACS 220 B, Operating And Installation Instructions

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ENGLISH
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Now you can see the connection block as below:
If you are connecting the AF ACS B by single phase power supply, you will have to connect the phase line to L1.
Close L1-L2 and L2-L3 with connection cables.
Connect the communication shielded pair cable (18 AWG) to the connection block C1 (5) and C2 (6) and the
shield to the communication ground connection; take care about polarity between outdoor unit and AF ACS; in
case of mistake you will see a communication error indication (all the LED flashing).
Alarm and remote control are two connection giving you the opportunity to control the AF ACS B by remote wired
connection, as sample from a Solar Panel Control Box or by Timer.
The electric schema is applied on the unit by a proper label.
Note 1: AF ACS B electrical consumption is very low but in case electrical heater elements are activated, AF ACS B
has to support the flow of big amount of electrical energy; for that reason it is necessary to power AF ACS B indepen-
dently to the power supplied by the outdoor unit.
Electric back up setting
When electric back up heaters are connected you have always to set SW1 on PCB. This operation is mandatory.
L1
REMOTE
CONTROL
L3 L2 L1 N 1 2 3 4 5 6
ALARM
TO OUTDOOR UNIT
L2
L3
N
B
A
REMOTE
CONTROL
ON/OFF
ALARM
SINGLE PHASE
ONLY
TO OUTDOOR UNIT
Factory setting 1 element
Max
1,5kW
2 elements
Max
1,5 +1,5kW
3 elements
Max
1,5 + 1,5 +
1,5kW