Description
Connect to
Type of cable
Cross section
(mm
2
)
(*)
Maximum length
(m)
Specifications
3, 4
,COM
(2)
L, N,
earth
Electric heating signal
Digital output, 12 V DC,
maximum 33 mA
Sheathed PVC cable
2 x 0.5
10
Relay for electric heater
5, 6
Digital input ,Free contact between terminals
5 and 6 ,12 V DC maximum 1.2 mA
Sheathed PVC cable
10
Float switch
FS: Flow switch
,COM
Input Signals 1
Input Signals 2
50
Digital input ,Free contact between terminals
and COM ,12 V DC maximum 10 mA
Digital input ,Free contact between terminals
and COM ,12 V DC maximum 10 mA
Sheathed PVC cable
External controller
,COM
,COM
Output Signals 1
Output Signals 2
External controller
Sheathed PVC cable
,COM Output Signals 2
Digital output, 12 V DC,
maximum 33 mA
1, 2
A, B
Transmission wiring to
2 x 0.5
2 x 0.5
2 x 0.5
2 x 0.75
outdoor and indoor unit
Outdoor and indoor unit
Transmission wiring to
remote controller
Remote controller
Shielded Twist
Pair Cable
Description
Connect to
Type of cable
Cross section
(mm
2
)
(*)
Maximum length
(m)
Specifications
Power supply
Power source: 220-240V ~ 50/60Hz
H05RN-F
3 x 2.5
N1:N-Neutral phase terminal
Sheathed PVC cable
L2,N2
MD:Motor Drain pump
Sheathed PVC cable
Signal output, compatible with AC
power source, maximum 2.5 A
4 x 0.75
2 x 0.75
Relay for AHU fan
L1:Low fan speed signal
M1:Medium fan speed signal
H1:High fan speed signal
N1,
L1,
M1,
H1
Fan Control signal by
remote controller
Power source
Drain pump
L3,N3
M.AL:Fan motor
alarm signal
50
Signal input ,Free contact between terminals
Overload(thermal)
protector for fan motor
Sheathed PVC cable
2 x 0.75
(2)
(4)
1~5
EXP.VALVE:connecting
expansion valve wires
Expansion valve box
Sheathed PVC cable 5 x 0.5
Digital output, 12 V DC
(8)
5.5 Terminal board connection and remarks
Terminal board
Terminal board
(3)
(3)
(3)
(4)
(9)
Liquid pipe thermistor
Gas pipe thermistor
THM5
THM3
Inlet air thermistor (*)
Outlet air thermistor
THM2
THM1
THM5 on PCB1
THM3 on PCB1
THM2 on PCB1
THM1 on PCB1
Sheathed PVC cable
2 x 0.5
10
(1)
10
maximum current 5.0 A
Signal output, compatible with AC
power source, maximum 1.5 A
L3 and N3 ,compatible with AC
power source, maximum 2.5 A
(1) Alarm occurs and MD signal (L2,N2) outputs ON automatically if the FS terminal (5, 6) of flow switch signal is open. The terminal is short-circuited with a jumper
before shipment.
(2) Definition of Input Signals refer to chapter 6.3. Make the wires for input signals as short as possible. DO not install the wires along the power supply wire of
AC 220V~AC415V. Install the wires separately at a distance of more than 30cm.If you install the wires along the power supply wire, insert the wires in a metal
conduit tube and ground one end of a wire.
(3) Definition of Output Signals refer to chapter 6.3. Make sure the allowable current in the limitation.
(4) Use a shielded cable for transmission circuit and connect it to ground.
(8) Alarm occurs if the M.AL terminal (L3,N3) of fan motor alarm signal is open. The terminal is short-circuited with a jumper before shipment. Be careful to high
voltage(over 220V) impressed to the line.
(9) Number links from 1 to 5 must match between the terminals of EXP.VALVE and the wires of the expansion valve box.In case that the wires supplied with expansion
valve box are not long enough, please make sure that the length extension is properly done avoiding the sensing distortion and that the joint is properly insulated
and waterproof to avoid any electrical failure.
(6)
(7)
(6) Short-circuit the terminals of L1,M1,H1 and connect the terminal H1 for one tap of fan motor. Short-circuit the terminals of L1,M1 and connect the terminals
H1,M1 for two taps of fan motor.The terminals of L1,M1,H1 are short-circuited with jumpers before shipment.
(7) MD signal (L2,N2) outputs ON during cooling and drying operation.
Terminal
(5) Thermistor cable should be located at least 50 mm away from power supply wires. Not following this guideline may result in malfunction due to electrical noise.
(5)
(5)
(5)
(5)
V/A,GND Duty signal
Field supplied controller Sheathed PVC cable
Digital input, 0-10 V DC,0-5V DC,4-20mA
2 x 0.5
(10) Duty signal terminal(V/A,GND) connects to the field supply controller.
(*) For Duty signal control insert the wire of THM1 from PCB2 ,referring to Fig.2 in chapter 5.3 .
(10)
