Connect the operating line for the
outdoor unit to the terminal
“1” and “2” of TB2 on the Switch Box.
Connect the operating line for the
indoor unit (exclusive use of cooling
operation) to the terminal “1” and “2”
of TB2 on the Switch Box.
220-240V~ 50Hz
220V~ 60Hz
Outdoor Unit
Power Supply
Main Switch
Outdoor Unit
Operating Line
(Non-pole, DC5V)
Switch BoxSwitch Box
Indoor Unit
Wired
Controller
Indoor Unit Indoor Unit
In case that the multiple indoor units
are connected to the same Switch
Box, the operation mode (cooling/
heating) for the indoor units will be
the same.
3241
2431
TB2TB1 TB2TB1
NL
1 2431NL1
1A2B
1A2B
1A2B 1A2B
TB2TB2
TB2TB2
TB2
1
S
ELB
Earth Leakage
Breaker
2
4
3 3
5
Wired
Controller
Wired
Controller
Pull Box
•
ExampleofElectricalWiring
ThefollowingfigureshowsanexampleofelectricalwiringaroundtheSwitch Boxes.
NOTES:
1. DonotapplyexcessivevoltagetothecommunicationcableDC5V(non-polarity)betweentheoutdoor
unitandtheSwitch Box ,betweentheSwitch Box andtheindoorunitorbetween Switch Boxes.
2. Use2-Conductorshieldedcommunicationcableforthecommunicationcable.(Donotuse3-Conductor
cableorover.)
3.
Connectthecommunicationcablefortheoutdoorunittoterminals“1”and“2”onTB2intheSwitch Box.
4. Connectthecommunicationcablefortheindoorunitexclusivelyforcoolingoperationtotheterminal“1”
and“2”onTB2intheSwitch Box.
5.
ForaSwitch Boxinthesamerefrigerantcycle,anelectricalpowersupplycanbesuppliedbyonemain
switch.
6.
Donotconnectthepowersupplyline(220-240V)totheterminalblockfortransmissionline.
7.
Connectthegroundwiringfortheoutdoor/indoorunitsandSwitch Box.Whengroundresistanceisless
than100ohms,groundwiringworkshouldbeperformedbythequalified electrician.
8.
DonotrunthecommunicationcablesalongwithpowersupplywiringintheSwitch Box.
Separatecommunicationcablesfromthepowersupplywirings.
6.4 SettingofDIPSwitches
DSWsonthePCB1aresetbeforeshippingas
shownbelowandnosettingisrequired.
The“
n
”markindicatesthepositionofDIP
switches.Figuresshowsettingbeforeshipment.
NOTE
ON
123456
ON
12
ON
12
• DSW1 • DSW4 • DSW5
All indoor and outdoor units must be shut
down prior to attempting to make DIP Switch
adjustments, otherwise, the settings will not
take effect.
● Whenintroducinghighvoltage
toterminals1and2ofTB2,
thefuseonthePCBisopen.
Insuchacase,first reconnect
thewiringcorrectlytoTB2,and
thenadjustthenumber1pinto
ONforDSW4andDSW5.
2B1A
TB2
Wired
Controller
Wired
Controller
Cooling Only Indoor Unit
Heating Only Water Module
or Water Module