9
⚫
OT6
X4.18
Demand Input 3
LV3 demand control / EXCT (forcibly
thermostat off) input
data service manual for details. 5 V
DC 0.5mA Current input
X5
⚫
U1
X5.1
No polarity
Communication bus wiring P-link
Required for centralized controller
⚫
U2
X5.2
No polarity
⚫
R1
X5.3
No polarity
Terminal for Group Wiring (RC
connection)
Internal Potential: 16 V DC
⚫
R2
X5.4
No polarity
⚫
R1
X5.5
No polarity
Terminal for Group Wiring (RC
connection)
Internal Potential: 16 V DC
⚫
R2
X5.6
No polarity
X6
⚫
M2.1
X6.1
4 - 20 mA
Analogue output terminals
Analog output (Room temperature
monitor), Indoor temperature
monitor output. Output current : 4 to
20 mA. Temperature indication
range : 5 to 36 °C, 0.5 °C step
⚫
M2.2
X6.2
Potential of M2.1
⚫
M2.3
X6.3
0 to 10 V DC
Analogue input terminals for
temperature and demand control
Analogue input (+10 V DC) for
demand control / temperature
control
⚫
M2.4
X6.4
Potential of M2.3
Analog input Negative potential (
–
10
V DC) for demand control /
temperature setting
⚫
M2.5
X6.5
No polarity
Activation of demand control
Insert bridge to activate temperature
control (system is set for demand
control as standard)
⚫
M2.6
X6.6
No polarity
⚫
COM
X6.7
Potential for DI1 to DI3
Digital Inputs
(For information on functionality
refer to section “Terminal layout –
CZ-CAPBC2 / 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”.
⚫
DI1
X6.8
Digital Input 3
⚫
DI2
X6.9
Digital Input 2
⚫
DI3
X6.10
Digital Input 1
⚫
COM
X6.11
Potential for DO2
Alarm Signal
External Potential: max. 230 V AC / 3
A
⚫
DO2
X6.12
Alarm Signal
⚫
COM
X6.13
Potential for DO1
Operation Signal
External Potential: max. 230 V AC / 3
A
⚫
DO1
X6.14
Operation Signal
6.
Installation of thermistor on liquid pipe
Mount the
“E1” thermistor to the liquid pipe of the AHU heat exchanger according to the following
instructions
Attach the liquid pipe thermistor to the liquid
pipe located in the lowest position after the
distributor in the heat exchanger.
