7
- 121
Mini ECO-i System
Remote Control Functions
7
7. Communication Adaptor
(SHA-KA128AG(B))
3
G
W
Basic wiring diagram
(Example using an Intelligent Controller )
Wire up the Communication Adaptor control wire and Indoor/outdoor control wire as shown in the
figure below.
Intelligent controller
Wiring procedure
G
Indoor/outdoor control wire
Connect terminals 0 and 1 (LINK1)
on the Communication Adaptor
signal terminal strip CN2 to the
indoor/outdoor control wire terminals
of the indoor or outdoor unit. There is
no polarity.
If connecting two indoor/outdoor
control wire systems, connect
terminals 3 and 4 (LINK2) on CN2 in
the same manner.
G
Communication Adaptor control wire
Connect terminals 11 and 12
(ADAPT + and -) on the
Communication Adaptor signal line
terminal strip CN2 with the same
terminals on the other
Communication Adaptor.
The
terminals have polarity.
Connect so
the positive and negative elements
are correct.
When connecting,
be sure to use
crossover wiring, not a branching
configuration
.
Precautions for the Communication Adaptor control wire
(Some items are duplicated in other sections.)
Indoor/outdoor control wire
Communication
Adaptor control
wire
Communication
Adaptor
Communication
Adaptor
G: Gas flow meter
W: Power flow meter
(1) The overall length should be 1 km or less.
(2) The communication wire has polarity. Connect so the positive and negative elements are
correct.
(3) Use only shielded wire. Be sure to ground only one end of the shielding.
10
11
12
ADAPT
(RS485)
10
11
12
ADAPT
(RS485)
10
11
12
ADAPT
(RS485)
10
11
12
ADAPT
(RS485)
(4) Be sure to use crossover wiring, not a branching configuration.
*
Connect the Intelligent Controller to the end of the crossover configuration.
(5) Change the terminating resistance plug CN32 to the “B” side (with terminal resistance) on the
board for the Communication Adaptors (
2
of them) at both ends of the configuration.
CN32
B
0
1
2
3
10
11
12
13
A
S1
CN1
FG AC100~240V
B
A
B
A
Communication
Adaptor 1
Communication
Adaptor 2
Communication
Adaptor 3
Communication
Adaptor 4
Intelligent
Controller
Communication
Adaptor
Intelligent
Controller
Communication
Adaptor
3
Terminating resistance
plug for Communication
Adaptor control wire
Terminating resistance
“off” (factory setting)
Terminating
resistance “on”
(6) Do not hook more than 16 units up
to the Communication Adaptor. The
system you are using (such as an
Intelligent Controller) may have
further restrictions. Consult the
installation manual for your system.
*
The Intelligent Controller has a
maximum restriction of seven
units.
(7) Make sure that high voltage (ex. 200
V) AC lines are not connected to the
Communication Adaptor control wire
or the indoor/outdoor control wire
terminals.
*
If high voltage (ex. 200 V) AC is
accidentally applied to the indoor/
outdoor control wire terminals, a
fuse will blow to protect the
controller board. If this happens,
disconnect the 200 V AC line, and
connect the U2 terminal wire of
the indoor/outdoor control wire to
the spare terminal. (Do not
change the U1 terminal wire.)
Spare terminals are located right
next to U2.
Change terminal number 1 LINK1-
U2
o
to terminal number 2 (LINK1-
U2)
Change terminal number 4 LINK2-
U2
o
to terminal number 5 (LINK2-
U2)
Indoor/outdoor control wire
06-408 Mini_ECOi_SM7 11/10/06 7:24 PM Page 121
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