Control of W-ECO MULTI SYSTEM
3
TD831077
III - 76
2. Optional Controller (AMY adapter)
7 Wiring procedure
¶ Inter-unit control wire
Inter-unit control wire is used to connect between the
AMY adapter and the indoor or the outdoor unit.
Connect the inter-unit control wire to the terminals 1
and 2 on the terminal plate TB1 of large P.C.B..
¶ AMY control wire
AMY control wire is used to connect between the
AMY adapters.
Connect the AMY control wire between the terminals
3 and 4 on the terminal plate TB1 of large P.C.B.
and the terminals 3 and 4 in another AMY adapter.
TB1
1234
AMY adapter
AMY
control
wire
connecting
terminals
Inter-unit
control
wire
connecting
terminals
TB1
1234
AMY adapter
AMY
control
wire
connecting
terminals
Inter-unit
control
wire
connecting
terminals
To the terminal plate
for inter-unit control
wire in indoor/outdoor
units.
To the terminal plate
for inter-unit control
wire in indoor/outdoor
units.
To
another
AMY
adapter
To
another
AMY
adapter
1859_M_I
7 Precautions when wiring AMY control
¶ Do not connect the power
supply cord to the AMY
control wire terminal and
inter-unit control terminal.
¶ Otherwise the P.C.B. in the
AMY adapter will be
dameged.
NOTE In case of emergency, the P.C.B. can be
used by reconnecting JP3 or JP4 short
plug from A side to B side after correcting
wiring.
<Turn off the power supply switch before
reconnecting the short plug>
CAUTION
TB1
1
4
Fuse
F2
BA
JP1
JP3
B
1
2
A
JP4
B
1
2
A
Fuse
F1
AMY control
wire
AMY control wire
short plug for
emergency
Inter-unit
control
wire
Inter-unit control
wire short plug for
emergency
1860_M_I
ABAB
22
11
1861_M_I
(When shipped
from factory)
(Emergency)
(Connect the short plug
from A side to B side.)
(1) Connecting short plug to inter-unit control wiring
Check if the short plug (CN31: 2P. black terminating
resistor) of the whole outdoor units except one
outdoor unit are removed from outdoor units P.C.B..
JP1 on large P.C.B. (Main) in the AMY adapter is
the short plug (the terminating registor) is con-
nected. When shipped from factory, short plug is
plugged at B side.
Main P.C.B.
for AMY adapter
(2) Connecting short plug to AMY control wiring
When connecting the short plug to the adapter
kit, keep the short plug (JP2) at B side.
When connecting the short plug to S-DDC,
reconnect the short plug (JP2) from B side to A
side of the whole connected AMY adapters.
TB1
1
4
BA
JP2
BA
JP1
AMY control
wire
AMY control
wire short plug
Inter-unit
control
wire
Inter-unit control
wire short plug
1862_M_I
Main P.C.B.
for AMY adapter
Important
(Reconnect the short plug
from B side to A side.)
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