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35
A B X Y E
1
2
3
4
5
XT6
A
B
X
Y
E
COMMUNICATION
Wire section
Maximum wire length
Wire type
AWG18-AWG16(0.75~1.25mm
2
)
50m
5 wire shielded cable
Procedure
1. Remove the rear part of the user interface.
2. Connect the cable to the appropriate terminals as shown in
the picture
3. Reattach the rear part of the user interface
Procedure
1. Connect the cable to the appropriate terminals as shown on the
picture
2. Fix the cable with cable ties to the cable tie mountings to ensure
strain relief
For boiler and outside circulation pump P_o:
For user interface:
As described above, during wiring, port A in the unit terminal XT6
corresponds to port A in the user interface. Port B corresponds to
port B. Port X corresponds to port X. Port Y corresponds to port Y,
and port E corresponds to port E..
“PLEASE USE SHIELDED WIRE AND EARTH THE WIRE.”
Procedure
1. Connect the cable to the appropriate terminals as shown on the
picture
2. Fix the cable with cable ties to the cable tie mountings to ensure
stress relief.
PUMP_O
CONTROL SIGNAL OUTPUT
IBH1
IBH1
CONTROL SIGNAL OUTPUT
IBH2
IBH2(reserved)
CONTROL SIGNAL OUTPUT
For feedback switch signal input
5/7/9 kW unit only
reserved
:
Atco:auto reset thermal protector
It must be connected to thermal protector!
For external backup heater box(
(
5/7/9 kW unit only
)
)
IBH1/2 FEEDBACK INPUT
(SWITCH SIGNAL INPUT)
NOTE
ADDITIONAL HEAT SOURCE
CONTROL SIGNAL OUTPUT
For 5/7/9 kW unit
the
terminal number is 25
and 26.
NOTE
For defrosting signal output:
Wiring size
Voltage
220~240VAC
0.2A
0.75mm
2
Type 2
Control port signal type
Wiring size
Voltage
220~240VAC
0.2A
0.75mm
2
Type 2
Control port signal type
Wiring size
Voltage
220~240VAC
0.2A
0.75mm
2
Type 1
Control port signal type
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