Panasonic U-72MF2U9 Technical Data Manual page 67

8. Optional Parts
8-3-5. ELECTRICAL WIRING
8-3-5-1. General Precautions on Wiring
(1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring
closely following the wiring diagram.
(2) Each wiring connection must be done in accordance with the wiring system diagram. Wrong wiring may
cause the unit to misoperate or become damaged.
(3) Do not allow wiring to touch the refrigerant tubing.
(4) Unauthorized changes in the internal wiring can be very dangerous. The manufacturer will accept no
responsibility for any damage or misoperation that occurs as a result of such unauthorized changes.
(5) Regulations on wire diameters differ from locality to locality. For field wiring rules, please refer to your LOCAL
ELECTRICAL CODES before beginning.
You must ensure that installation complies with all relevant rules and regulations.
(6) If the power supply cord of this appliance is damaged, it must be replaced by a repair shop designated by the
manufacturer, because special-purpose tools are required.
●
WARNING
●
8-3-5-2. Recommended Wire Length and Wire Diameter for Power Supply System
Table 18 Solenoid valve kit
Time delay fuse or
Type
circuit capacity
56
160
8-3-5-3. Wiring System Diagram
Indoor unit
Solenoid valve relay kit
Electrical box
Control board
(Main)
3WAY (BLK)
5P
Connector from indoor unit
control board (White, 5P)
Connector from
Solenoid Valve Relay Kit
(White, 5P)
**
Connecting diagram
Joint both connector from solenoid valve relay kit and connector
from indoor unit control board inside the electrical box.
CAUTION ALWAYS COMPLY WITH NATIONAL AND LOCAL CODE REQUIREMENTS.
This equipment is strongly recommended to be installed with Earth Leakage Circuit
Breaker (ELCB) or Residual Current Device (RCD). Otherwise, it may cause electrical
shock and fire in case of equipment breakdown or insulation breakdown.
Earth Leakage Circuit Breaker (ELCB) must be incorporated in the fixed wiring in
accordance with the wiring regulations. The Earth Leakage Circuit Breaker (ELCB) must
be an approved 15 A, having a contact separation in all poles.
To prevent possible hazards from insulation failure, the unit must be grounded.
Table 19 Control wiring
Type
15 A
160
Control board
(CR-SV80A-N)
Class
OPTION / 3WAY Control wire(5 wires)
(WHT) 6P
field supplied
Max. 98ft (30m)
1
2
3
4
5
Terminal board
Ⅱ
Class
3-Way connecting wire
6.2ft (1.9m) / supplied
It requires that the Class
Inter-unit
(between relay kit and solenold valve kit)
control wiring
AWG #18 (0.75 mm
56
Max. 98ft (30m)
Ⅰ
Class
field supplied
Power supply
208/230V
*
L1
60Hz 1PH
L2
Ⅱ
Ground
Terminal board
*
Ⅰ
wire and Class
Fig. 1
2 - 51
Design of 3WAY VRF SYSTEM
)
2
Terminal board
Solenoid valve kit
L1
L2
1
2
3
4
5
Disconnect Switch may be needed
by the National/Local code.
Ⅱ
wire should be separated.
1
2
3
4
5
6
7
8
9