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6
System Wiring – Multiple MDUs
Wire Type
Control
Comm Link
Power Wires
Comm & Power
B & C combined
in one cable
SV-IR
Extension Cable
10
E
1 2 3 4 5 6 7 8
A
Control
Comm Link
B
Next
MDU
Power Supply
C
Wire to a Sivoia plug-in transformer, junction box mount transformer, or
a Sivoia power panel. Each MDU must be EARTH grounded. One Sivoia
transformer can power ONLY ONE MDU regardless of system width.
Description
A
2 conductors / #22-24 AWG
3 conductors (2 shielded, 1 common) /
B
#24 AWG Belden
3 conductors:
C
2 / #18-22 AWG (24 VAC power supply)
1 / #18-22 AWG (earth ground)
6 conductors:
D
2 / #16 AWG (24 VAC power supply)
1 / #18 AWG (earth ground)
3 #22 AWG shielded + 1 #24 AWG
common (comm link)
(Lutron wire part no. SV-CBL-MDU-250)
3 conductors #22 AWG
E
Lutron model # SV-IR-EXT-10
A maximum of 64 MDUs can
be wired together per system
Comm Link
B
MUX
Common
MUX
MDU Terminal Blocks
To a Sivoia wall
mounted keypad,
or a Sivoia interface
wire model #1883A
®
Sivoia
Drapery
®
E
1 2 3 4 5 6 7 8
Control
A
Comm Link
B
C
Power Supply
G
N
AC
AC
D
Maximum Length
Control to MDU: 250 ft.(76 m)
4000 ft. (1333 m) per system
1000 ft. (333 m) from MDU to MDU
Transformer to MDU:
#18 AWG - 150 ft. (46 m)
#20 AWG - 100 ft. (31 m)
#22 AWG - 60 ft. (18 m)
MDU to Sivoia power panel:
200 ft. (61 m)
50 ft. (15 m) per system -
total of 5 SV-IR-EXT-10, 10 ft.
(3 m) each
Next
MDU
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