24
Control Wiring Diagram
Notes
Maximum Allowable Length
Wiring and Address Setting
NO
NO
Leave the male connector
on CN41 as it is.
1. Assign a sequential number to the outdoor unit.
2. Do not connect the terminal blocks (TB5) of the indoor units connected to different
outdoor units.
3. Disconnect the male connector on the controller board from the female power supply
switch connector (CN41), and connect it to the female power supply switch connector
(CN40) on only one of the outdoor units.
4. Provide grounding to S terminal on the terminal block for transmission line for
centralized control (TB7) on only one of the outdoor units.
5. When the power supply unit is connected to the transmission line for centralized
control, leave the male connector on the female power supply switch connector
(CN41) as it is at factory shipment.
6. The outdoor unit cannot be connected to the units other than the PFD series indoor units.
<a. Indoor/Outdoor transmission line>
Connect M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and A1, B1 terminals of the
indoor/outdoor terminal block (TB5) on the indoor unit (IC). (Non-polarized 2-core cable) *Only use shielded cables.
[Shielded cable connection]
Connect the earth terminal of the OC and S terminal of the IC terminal block (TB5).
<b. Transmission line for centralized control> Only with connection to a manipulator for centralized control
Daisy-chain terminals M1 and M2 on the terminal block for transmission line for centralized control (TB7) on each outdoor unit (OC).
Disconnect the male connector on the controller board from the female power supply switch connector (CN41), and connect it to the female power
supply switch connector (CN40) on only one of the outdoor units. *Only use shielded cables.
[Shielded cable connection]
To ground the shielded cable, daisy-chain the S-terminals on the terminal block (TB7) on each of the outdoor
units. Connect the S (shielded) terminal on the terminal block (TB7) on the outdoor unit whose male connector
on CN41 was disconnected and connected to CN40 to the earth terminal ( ) on the electric box.
<c. Switch setting>
Address setting is required as follows.
Main Controller
Sub Controller
Settings to be made with the sub/main switch
IC
IC
OC
1
2
Notes
3
MA
MA
51~100
01~50
01~50
00
00
Setting not required.
Sub Controller
✻
One indoor controller (controller circuit board)
is equipped in the indoor unit (10HP), and two
indoor controllers (controller circuit boards)
are equipped in the indoor unit (20HP).
<a. Indoor/Outdoor transmission line>
Maximum Length (1.25mm
2
or more)
L1, L2 200m
<b. Transmission line for centralized control>
Maximum Length via outdoor unit (1.25mm
2
or more)
L1 + L31 + L2 500m
Steps
Unit or controller
Main
Sub
Indoor
unit
MA
remote
controller
Address
setting range
Address setting method
Outdoor unit
Factory
setting
Main
Assign a sequential odd number starting with
"01" to the upper indoor controller.
Zone number (SW14) setting is
required. (Setting range: between
1 and 5)
Add 50 to the address assigned to the indoor unit
connected to the system with one outdoor unit.
Assign sequential numbers starting with the
address of the main unit in the same group.
(Main unit a1)
OC
TB3
TB7
M1 M2
M1M2 S
51
IC
TB5-1
A1 B1 S
01
TB5-2
A2B2 S
02
OC
TB3
TB7
M1 M2
M1 M2 S
52
A B
TB15
1 2
MA
L31
L1
L2
Connection
Disconnect the male power supply
connector from CN40 and connect
it to CN41.
(1) An example of a system to which an MA remote controller is connected
2
System connected to two outdoor units
