– 63 –
On the outside of the unit, do not allow the wire for the remote controller (communication wire) and the wire for
AC220-240 V to come into contact or put them together in one electrical conduit; otherwise, the control system may
have trouble due to noise.
Item
Model name
MMD-
Communication line
Indoor / Outdoor inter-unit wiring (*2) (2
cables)
Central control line wiring (*3) (2 cables)
Remote controller wiring (*4)
Air to Air Heat
Exchanger with
DX Coil Unit
VNK502HEX1E
VN502HEX1E
VNK802HEX1E
VN802HEX1E
(Up to 1000 m)
2-core, non-polarity shield wire: 1.25 mm
2
(Up to 2000 m)
2-core, non-polarity shield wire: 2.00 mm
2
2-core, non-polarity: 0.5 to 2.0 mm
2
VNK1002HEX1E
VN1002HEX1E
VNK1002HEX1E2
VN1002HEX1E2
(*2) (*3)
• 2-core with non-polarity wires are used for the Indoor / Outdoor inter-unit wiring and Central controller wiring.
• To prevent noise trouble, use 2-core shield wire.
• The length of the communication line means the total length of the inter-unit wire length between indoor and outdoor units added with the
central control system wire length.
(*4)
• 2-core with non-polarity wire is used for wiring of the remote controller wiring and group remote controllers wiring.
Remote controller wiring, remote controller inter-unit wiring
2-core, non-polarity: 0.5 mm
2
to 2.0 mm
2
Total wire length of remote controller wiring and remote
controller inter-unit wiring = L + L1 + L2 + ··· Ln
For wired type only
Up to 500 mm
When wireless type is included
Up to 400 mm
Total wire length of remote controller inter-unit wiring = L1 + L2 + ··· Ln
Up to 200 mm
L
L1
L2
Ln
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Remote
controller
Remote controller
wiring
Remote controller inter-unit wiring
(Up to 8 units)
Connection diagram
1. The dotted line represents a wire procured locally, and the dashed line represents an option sold separately.
2.
represents a terminal block,
represents a connection terminal,
represents a connector on the
printed circuit board and
represents a short circuit connector.
3.
represents a protective earth.
4.
represents a printed circuit board.
5. Using a no voltage a-contact input of the external input (sold separately), the following operations are available:
Between 1 and 2: Selecting the remote controller operation (Invalid / Valid)
Between 1 and 3: Adjusting the fan speed (Low / High)
Between 1 and 5: Operation (ON/OFF)
Use a microcurrent contact (DC12 V, 1 mA). In addition, ON/OFF operation is possible when using a voltage of
DC12 V or 24 V.
6. Orange wire (High) is connected as factory default. To switch to “Extra High”, connect black wire’s connector
instead of orange.
7. The unit cannot run when the temperature of the outdoor air is below -15 °C.
DC15V
DC 7V
DC12V
DC20V
2
7
7
7
7
43F11
43F12
4
6
6
2 4 2
TB1
R(L)S(N)
43F11
RY702
RY701
43F21
43F22
4
6
2 4
6
2
1
CN67
3
C
1
CN701
P01
C
43F12
8
RY705
RY704
+
+
5
3
1 3 5
CN702
43F22
8
8
43F21
8
6
5
2
1 3 4
CN760
6
1
DAM
M
1
FM1
FM2
TB2
CN040
CN82
1
CN601
CN602
1
3
1
3
634
CN34
1
3
1
3
CN706
RY708
RY710
RY709
SW701
ON
OFF
9
7
3 5
CN704
3 4 5 TB3
5
CN705
2
1
5
3 4
1
2 2
2
1
2
CN041
A B
1
A
2
1
U1 U2
3
B
2
CN106
1
2
CN104
CN105
1
2
1
TRA
t°
TOA
t°
TSA
t°
1
CN102
CN103
1
2
1
CN101
CN100
3
1
2
TCJ
TFA
t°
t°
TC2
TC1
t°
t°
6
3
2 4 5 6
M PMV
DMV1
MV1
1
TB5
2
TB4
FS1
CN61
3
2 4
1
CN81
5 6
2
1
5
4
3
Power supply for
indoor unit
220-240 V~, 50 Hz
220 V~, 60 Hz
Earth
represents the connector to switch
between Extra High and High.
Wiring between indoor
and outdoor unit
Wiring for
the remote
controller
Wired remote controller
(sold separately)
Indoor control
circuit board
MCC1615
Connector
(White)
Connector
(Black)
External output
(220-240 V~, under 1A each)
*5 External input (sold separately)
No voltage a-contact input
Voltage DC (12 V, 24 V)
input
Operation output
White
Wh
ite
Red
Connector
(White *6)
Yellow
Connector
(Red *6)
(White)
Red
Red
Red
Bl
ue
O
ran
ge
Red
Bl
ue
O
ran
ge
Wh
ite
Ye
llo
w
Blue
Purple
Re
d
1 Common
2 Remote controller operation
3 Fan speed
5 Operation
Pink
Power
supply
Bla
ck
Blu
e
F01
T3.15A
250 V~
Common
External damper output
Abnormal / Bypass
mode output
Red
Bla
ck
Blu
e
Purple
Pink
Gray
Yellow
Blue
Blue
Yellow
Gray
Yellow
Yellow
Yellow
Bl
ac
k
Or
ange
Wh
ite
Wh
ite
Re
d
Yellow
Yellow
Bl
u
e
Bl
ue
Bl
ac
k
Or
ange
Or
ange
Or
ang
e
Black
(Red)
(White)
(Black)
(Yellow)
(Black)
(Blue)
(Brown)
(Black)
(Red)
(Green)
(Yellow)
(Blue)
(White)
(Blue)
(Blue)
(Red)
(Red)
(Blue)
(Red)
Pink
F02
T15A
250 V~
Red
Red
Air to Air Heat
Exchanger with
DX Coil Unit
(VNK type only)
*
1: VNK type only
Code
Parts name
CN***
Connector
F01
Fuse (Printed circuit board)
F02
Fuse (Motor)
FM1
Air supplying motor
FM2
Air exhausting motor
DAM
Damper motor
TRA
TRA sensor
TOA
TOA sensor
TSA
TSA sensor
Code
Parts name
TFA
TFA sensor
TCJ, TC1, TC2 Indoor coil sensor
TB1
Terminal block (power source)
TB2
Terminal block (communication)
TB3
Terminal block (external output)
TB4
*1
Terminal block (Humidistat)
TB5
*1
Terminal block (Magnetic valve)
FS1
Float switch
MV1
*1
Magnetic Valve
Code
Parts name
DMV1
*1
Decompression magnetic valve
PMV
Pluse modulating valve
SW701
DIP switch
43F11, 43F12
Relay for air supplying motor
43F21, 43F22
Relay for air exhausting motor
RY701, RY702 Relay for air supplying motor
RY704, RY705 Relay for exhausting motor
125-EN
126-EN
+00EH99887601-2_01EN.book Page 63 Thursday, September 15, 2016 5:23 PM
