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AER.MIU.HWNEC.GB.01.04/14
SK2014-SON-002-TechMnl-SWC-001
I/O
Code
2-Pipe
4-Pipe
Analogue Input
Return air sensor
AI1
Return air temperature (Tr)
2-pipe coil circuit sensor
AI2
Chilled / hot water coil
circuit (Ti1)
Chilled water coil circuit
(Ti1)
Hot water sensor
AI3
N/A
Hot water coil circuit
(Ti2)
Input
LED display / IR receiver
X-DIS1
Digital communication port to LED display / IR receiver
board.
Wired wall pad
TTL1
Digital communication port to wired wall pad board.
Digital input
Occupancy contact
On/Off
Window contacts:
For remote ON/OFF (when DIPB SW1 = 1).
Economy contacts:
For remote activation of economy mode (when DIPB
SW1 = 0).
Electrical heater safety switch
EH
Voltage-free (NC). The contact is closed before the EH is
turned on.
Power input
Phase
L1
Power supply to the PCB and all the loads connected to
the voltage outputs. Max length: 5 m.
Neutral
N1
Power supply to the PCB and all the loads connected to
the voltage outputs. Max length: 5 m.
Earth
PE1
Power supply to the PCB and all the loads connected to
the voltage outputs. Max length: 5 m.
Voltage output
Fan
CN4
Fan driver
Valve 1
MTV1
2-pipe coil circuit valve
output – chilled / hot water
valve.
Voltage output (L)
4-pipe coil circuit valve
output – chilled water
valve.
Voltage output (L)
Valve 2
MTV2
Reserved
4-pipe coil circuit valve
output – hot water valve.
Voltage output (L)
Voltage of electrical heater
(Live)
HEAT
Voltage output (L), maximum 25 A
Output
Stepping motor
CN1 / CN2
Louver stepping motor relay
Auxiliary contact 2
AUX2
Cooling mode signal relay (NO). Voltage free contact.
To ensure the sensitivity of the connection, please
make sure max wiring length < 5 m, 5 A
Auxiliary contact 1
AUX1
Heating mode signal switch (NO). Voltage free contact.
To ensure the sensitivity of the connection, please
make sure max wiring length < 5 m. 5 A
Serial BUS port
CN3
Master-slave network serial connection OR
MODBUS / local PC host network serial connection.
