En-10
7.4. Connection of wiring
7.4.1. Terminal Explanation and Cable Holes
• Only one cable can be passed through each cable hole. To pass multiple cables
through a single cable hole, use a (
fi
eld supply) multi-conductor cable with more wires,
and bundle multiple cables into one.
• Maximum length of cable is 10 m. (recommended value, Except "P1" and "TR1")
TH1 TH2
TH3 TH4
EV1
EV2
EX1 EX2 EX3 EX4
EX6 EX7
EX5
EX8 EX9
EX10
P1
D1
TR1
R1
·Power supply terminal
·Drain pump signal terminal
·Transmission terminal
·Remote controller terminal
·External interface terminal
Cable holes with mounted cable glands (accessories)
Hole No.
Cable gland
type
Diameter
(mm)
Insertable cable
dimensions (mm)
H2
Large
Φ
20.0
Φ
6 to 12
H5, H6, H7, H9, H10
Medium
Φ
16.2
Φ
4 to 8
H1, H3, H4, H8
Small
Φ
10.2
Φ
3 to 6
H1
H2
H3
H5
H4
H8
H9
H10
H6
H7
Terminal
No.
Terminal Name
Hole No.
Connection
Recommended
cable size
(mm
2
)
Cable type
Speci
fi
cations
P1
POWER SUPPLY
H2
Power supply
2.5 (AWG14)
Type245 IEC57 or
equivalent
1ø 50 Hz 198 to 264 V
2 Cable + earth (ground)
TR1
TRANSMISSION
H3
Transmission line
0.33 (AWG22)
LONWORKS compatible
cable
22 AWG LEVEL 4 (NEMA)
non-polar 2 core, twisted
pair solid core diameter
0.65 mm
R1
REMOTE CONTROLLER
H4
2-wire type remote controller
0.33 to 1.25
(AWG22 to 16)
Sheathed PVC cable
Non polar 2 core
3-wire type remote controller
0.33 (AWG22)
Sheathed PVC cable
Polar 3 core
D1
DRAIN PUMP
H1
Drain pump
0.5 (AWG20)
Type245 IEC57 or
equivalent
―
T1
THERMISTOR (GAS)
H5
Thermistor mounted to the gas
pipe
0.33 (AWG22)
Sheathed PVC cable
Relay the multi-conductor
cable, and pass it through
the designated hole.
T2
THERMISTOR (LIQUID)
Thermistor mounted to the liquid
pipe
T3
THERMISTOR (INLET AIR)
Thermistor mounted to the inlet
T4
THERMISTOR (OUTLET AIR)
Thermistor mounted to the outlet
EV1
EEV1
1 - Red
2 - Brown
3 - Black
4 - Green
5 - Yellow
6 - White
H9
Electronic expansion valve 1
0.33 (AWG22)
Sheathed PVC cable
―
EV2
EEV2
H10
Electronic expansion valve 2
0.33 (AWG22)
Sheathed PVC cable
Use the electronic
expansion valves only
when two units are
connected
EX1
ON/OFF SIGNAL
(OUTPUT)
External output
/ Digital
H6
External controller
0.33 (AWG22)
Sheathed PVC cable
―
EX2
ERROR SIGNAL
(OUTPUT)
External output
/ Digital
EX3
FAN SIGNAL
External output
/ Digital
EX4
DEFROST SIGNAL
External output
/ Digital
EX5
THERMOSTAT ON/OFF
SIGNAL
External output
/ Digital
EX6
ON/OFF SIGNAL (INPUT)
External input
/ Digital
H7
External controller
0.33 (AWG22)
Sheathed PVC cable
ERROR SIGNAL
OFF(Open)=
Error
ON(Short)=
Normal
EX7*
ERROR SIGNAL *
(INPUT)
External input
/ Digital
The factory default is shorted between the
terminals by the cables.
EX8
COOL/HEAT SIGNAL
External input
/ Digital
EX9
ANALOG SIGNAL
External input
/ Analog
EX10
FLOAT SW SIGNAL
External input
/ Digital
H8
Float switch mounted to the heat
exchanger
0.33 (AWG22)
Sheathed PVC cable
―
EX7*: The factory default is shorted between the terminals by the cables. If there is a malfunction with an external device, using this external input is recommended in order to protect the
refrigerant system.
9381279005_IM.indb 10
9381279005_IM.indb 10
6/30/2014 11:31:18 AM
6/30/2014 11:31:18 AM
