98
16 INSTALLATION (ELECTRIC) AND SERVICE INSTRUCTIONS
3
Wiring
Always shut off the power supply (breaker) before installing or uninstalling.
Connection terminals
Terminal names and uses
N
O
I
L
OFF
ON
1
2
3
4
5
6
7
8
9
10
11
12
ADAPT
(RS-485)
U1
U2
U1
U2
DO-COMM
DO 1
DO 2
DI-COMM
DI 1
DI 2
LINK1
LINK2
100 - 240V
50/60Hz 1-PH
N
L
Earth
:
:
:
:
:
:
Communication adaptor control wire (RS-485)
Indoor/outdoor control wire (HBS)
All alarm output
All operation output
All stop input
All start input
ADAPT +/-
LINK 1/2
DO 1
DO 2
DI 1
DI 2
Basic wiring diagram
Wire up the communication adaptor control wire and inter-unit
control wire as shown in the figure below.
Intelligent Controller
Indoor/outdoor control wire
Indoor/outdoor control wire
Communication
adaptor control
wire
G: Gas flow
meter
W: Electricity
meter
W
G
Communication adaptor
* When connecting link systems (inter-unit control wires),
always connect beginning with LINK1 and LINK2 on the Intelligent
Controller. Up to 4 link systems can be connected.
Wiring procedure
Inter-unit control wire (no polarity)
Connect signal terminals 0 and 1 (LINK1) to the Inter-unit
control wire terminals of an indoor or outdoor unit.
If using two link systems for connection, connect
signal terminals 3 and 4 (LINK2) in the same manner.
Communication adaptor control lines (note + and -
polarity)
Up to seven external communication adaptors can be
connected to the control unit (see figure at left).
However, a maximum of four links is supported. Be sure
to follow the communications adaptor Installation
Instructions when connecting the adaptors. Make sure
that power lines are not connected to the
communication adaptor terminals or Inter-unit
control wire terminals.
*
If the power voltage is accidentally applied to the
Inter-unit control wire terminals, a fuse will blow to
protect the controller board. If this happens, disconnect
the power line, and connect the Inter-unit control
wire to the spare U2 terminal. (The other signal line can
stay connected to the U1 terminal.) The spare U2
terminals are right next to the main U2 terminals.
Use terminal 2 (LINK1-U2) instead of terminal 1
Use terminal 5 (LINK2-U2) instead of terminal 4
(1) Power supply connection
Connect the power supply to the commercial power mains (100 to 240 V
AC), using a dedicated circuit.
Connect the power supply lines to the L and N power supply terminals (the
power supply neutral to the N terminal).
Connect an earth ground line to the power supply terminal.
(2) Signal connection
Connect indoor and outdoor signals using AWG#20-AWG#14
two-conductor cable.
Overall length of each signal line should be 0.62 mile or less.
Do not run signal lines through the same conduit as power supply lines,
use the same cable as the power supply, or run close to the power
supply lines (maintain at least 12 inch separation, if cabled outside the
control box).
Do not run the LINK1 and LINK2 signal lines through the same conduit,
use the same cable for wiring, or run the signal lines close together.
CZ-256ESMC1U̲改.indb 98
CZ-256ESMC1U̲改.indb 98
2011/11/11 11:25:59
2011/11/11 11:25:59
