67
AHU Kit – Installation Instructions – 09/2021
Electrical Wiring
5
Section C
Connections
No.
Name
In / Out
Allocation
Function
Comment
10 ON6
O
Recirculat. Operation
Status Outputs
Internal Potential: 12 V DC
9 ON5
O
Heating Operation
8 ON4
O
Cooling Operation
7 ON3
O
Thermostat ON
6 ON2
O
Defrost Operation
5 ON1
O
Potential for ON2
to ON6 (12 V DC)
4 COM
I
Potential for DI1 to DI3
Digital Inputs
(For information on functionality refer
to section “Terminal layout – CZ-CAP-
BC2 / ACC-SP1A“ in this document)
2 types of usage:
a) Potential-free:
Keep S3 of CZ-CAPBC 2/ ACC-SP1A on
“NON VOLTAGE”.
b) 12 to 24 V DC, 10 mA external:
Change S3 of CZ-CAPBC2 / ACC-SP1A
to “VOLTAGE”.
3 DI3
I
Digital Input 3
2 DI2
I
Digital Input 2
1 DI1
I
Digital Input 1
Section D
Connections
No.
Name
In / Out
Allocation
Function
Comment
10 BLIND
Unused
9 HU2
O
No polarity
External Humidifier Control
Internal Potential:
230 V AC / max. 3 A
8 HU1
O
No polarity
7 2Z-7
I
Potential for OP3
Fan Alarm Input
(Unit will only operate if this contact is
closed, otherwise error code P01 will
be displayed.)
Internal Potential: 230 V AC
6 OP3
I
Fan Alarm
5 1Z-3
O
No polarity
Fan Start – Stop Signal
External Potential:
max. 230 V AC / 5 A
4 1Z-5
O
No polarity
3
I
Protective earth
Protective Earth Conductor
2 N
I
Neutral
Neutral Terminal
1 L
I
Live
Live Terminal
External Potential:
230 V AC, max. 1 A
Section E
Connections
No.
Name
In / Out
Allocation
Function
Comment
10 M1-6
I
WHT
Expansion valve
(only ECOi and ECO G)
Required only for PAW-160MAH2(L/M) and
PAW-280MAH2(L/M)
9 M1-5
I
GRY
8 M1-4
I
BLK
7 M1-3
I
YEL
6 M1-3
I
RED
5 M1-1
I
ORG
4 R2
I
No polarity
Terminal for Group Wiring
(RC connection)
Internal Potential: 16 V DC
3 R1
I
No polarity
2 U2 (OC)
I
No polarity
Communication bus wiring
1 U1 (OC)
I
No polarity
To be continued on next page.
Summary of Contents for PAW-160MAH2L
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