4-2. Recommended Wire Length And Wire; Diameter For Power Supply System; Wiring System Diagrams - Panasonic R410A Installation Instructions Manual

Indoor Unit
Time delay fuse or
Type
circuit capacity
U1, K1, T1, F1
Control Wiring
(A) Inter-Unit Control Wiring
AWG #18
Use high voltage wire (300 V)
Max. 3,300 ft.

4-3. Wiring System Diagrams

Basic wiring diagram for standard control
Wire joint
connection
Remote
B
Controller
WHT
1 1
BLK
2 2
C
Wire joint
connection
NOTE
Disconnect switch may be needed by the National/Local code.
ALWAYS COMPLY WITH NATIONAL AND LOCAL
CODE REQUIREMENTS.
NOTE
(1) Refer to Section 4-2. Recommended Wire Length
and Wire Diameter for Power Supply System for the
explanation of "A", "B" and "C" in the above diagrams.
(2) Inter-Unit Control Wiring (A) and remote control wiring
(B), (C) have no polarity. But for other wiring, respect
polarity. Be sure to connect as shown in the Wiring
System Diagram.
(3) In case of separate supply connection to indoor unit,
over current protection must be provided between
power source and indoor unit.
MAXIMUM OVER CURRENT PROTECTION 15 A
(FUSE OR HACR TYPE CIRCUIT BREAKER)
15 A
(B) Remote Control Wiring
* 2
AWG #18 (0.75 mm
* 1
Max. 1,650 ft.
Outdoor unit
INV unit
Inter-unit power line
Indoor
208 / 230 V, 60 Hz, 1-PH
unit *
L1
L2
Grounding line
A
U1
U2
Outdoor unit
INV unit
Inter-unit power line
Indoor
208 / 230 V, 60 Hz, 1-PH
unit *
L1
L2
Grounding line
A
U1
U2
22
(C) Control Wiring For Group Control
2
) AWG #18
Max. 650
AWG=American Wire Gauge
With ring-type wire terminal
* 1
Wire joint connection
* 2
L1
Power supply
L1
L2
208 / 230 V, 60Hz, 1-PH
L2
Grounding line
1
2
G
U1
U2
L1
Power supply
L1
L2 208 / 230 V, 60Hz, 1-PH
L2
Grounding line
1
2
G
U1
U2
C Type (Outdoor Unit)
8P terminal board
U1 U2 1 2 G L1 L2
Inter-unit Inter-unit
control wiring power wiring
* 2
2
(0.75 mm )
-
ft. (Total)
-
* Disconnect switch
Field supply
Power wiring