Sanyo DHX4852 - Manual (Page 94)

3-46
Control of W-2WAY ECO-i SYSTEM
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4. System Controller
How to connect electrical wiring
(1) Connect B1, B2 to indoor PCB T10 connector using
the accessory 6P connector. (with fuse) (*No polarity)
Total wire length is less than 985 ft. and size is
AWG#18.
(2) Connect B5, B6 to indoor unit 2P terminal base.
(*No polarity). Wire size is AWG#18.
Basic wiring
Terminals for remote monitoring
Basic wiring diagram of control wiring
A max. of 64 indoor units and 30 outdoor units can be
connected in 1 system.
Up to 10 system controllers can be connected in 1
system.
B1
Indoor unit PCB
T10
(YEL)
2P terminal base
Indoor unit
System controller
Accessory connctor
Wire joint connection
B2
B3
B4
B5
B6
U1
U2
A1
<Back side of system controller>
A2
A3
A4
A5
A6
B6
B5
B4
B3
B2
B1
Inter-unit
control wiring
System controller
RC1
1-1
RC2 RC3
2-1 3-1
B1:
B2:
B3:
B4:
B5:
B6:
Power supply: DC12V *No polarity
To T10 connector on indoor PCB
Inter-unit control wiring. (Low voltage)
To indoor unit 2P terminal base (U1, U2)
*No polarity
Auxiliary of inter-unit control wiring
Not be used
A1:
A2:
A3: Common input for turning air conditioners on or off.
A4:
A5:
A6:
ON operation state indicator output.
Alarm indicator output.
Common indicator output.
Input for turning off air conditioners concurrently.
Input for turning on air conditioners concurrently.
Fig. 3-27
Fig. 3-28
Electrical wiring
TD831138-02_W-2WAY.indb 46 2007/07/26 14:31:47