Control of W-ECO MULTI SYSTEM
3
TD831077
III - 71
2. Optional Controller (S-DDC)
AMY
control
wire
AMY
control
wire
AMY
control
wire
AMY adapter
Inter-unit
control wire
AMY adapter
Inter-unit
control wire
S-DDC
HOST
1840_M_I
7 Wiring procedure
¶ AMY control wire is used to connect between S-DDC
and AMY adapter. Connect AMY control wire be-
tween the terminals 1 and 2 on the terminal plate
TB1 of large P.C.B. in S-DDC and the terminals 3
and 4 on the terminal plate TB1 of large P.C.B in
AMY adapter.
12
TB1TB1
1234
S-DDC
AMY adapter
AMY
control
wire
connecting
terminals
AMY
control
wire
connecting
terminals
Inter-unit
control
wire
connecting
terminals
AMY control wire
To the terminal plate
for inter-unit control
wire in indoor/outdoor
units.
To
another
AMY
adapter
1841_M_I
(2) Connecting control wires.
Use two-core, 0.5 mm
2
to 1.6 mm
2
lead wire for
AMY control wire. The limited length of control wire
is 1,000 m in total. The control wire has no polarity.
¶ Do not thread the AMY
control wire through a
metallic pipe with power
cord.
¶ Do not wire the power
cord and the control wires
together in a same cable
or do not wire the power
cord near the control
wires. For AMY control
wire, use signal wire
which is different from
power code.
7 Wiring diagram
AMY and inter-unit control wiring for AMY adapter
should be wired as shown below.
¶ When using S-DDC:
UP to 32 AMY adapters can be connected.
CAUTION
¶ MVVS or CPEVS: Shielding wire from 0.5 mm
2
to
1.6 mm
2
.
¶ Use shielding wire for AMY and inter-unit control
wiring and ground the shielding on both sides (See
below), otherwise misoperation from noise may
occur.
Shielded wire
0797_M_I
ground
ground
TB1
TB1
1
1
3
2
Transformer
Nylon clamper
(TYPE 3)
Grounding terminal
AC 220-240 V field supplied
power cord
Screw for fixture
1839_M_I
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