Design of 3WAY VRF SYSTEM
2 - 51
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2
3
4
5
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8
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8. Optional Parts
8-3-5. ELECTRICAL WIRING
8-3-5-1. General Precautions on Wiring
(1)
(2)
(3)
(4)
(5)
(6)
Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring
closely following the wiring diagram.
Each wiring connection must be done in accordance with the wiring system diagram. Wrong wiring may
cause the unit to misoperate or become damaged.
Do not allow wiring to touch the refrigerant tubing.
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.
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.
If the power supply cord of this appliance is damaged, it must be replaced by a repair shop designated by the
manu
facturer, because special-purpose tools are required.
WARNING
●
●
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.
8-3-5-2. Recommended Wire Length and Wire Diameter for Power Supply System
Table 18 Solenoid valve kit
Type
Time delay fuse or
circuit capacity
56
160
15 A
Table 19 Control wiring
Inter-unit
(between relay kit and solenold valve kit)
control wiring
AWG #18 (0.75 mm
2
)
Max. 98ft (30m)
Type
56
160
8-3-5-3. Wiring System Diagram
Control board
(Main)
3WAY (BLK)
5P
Indoor unit
Electrical box
OPTION / 3WAY
(WHT) 6P
Control board
(CR-SV80A-N)
Solenoid valve relay kit
1
2
3
4
5
1
2
3
4
5
Terminal board Terminal board
Class
3-Way connecting wire
6.2ft (1.9m) / supplied
Class
Control wire(5 wires)
field supplied
Max. 98ft (30m)
Power supply
208/230V
60Hz 1PH
Ground
*
Wiring from
control board
Ⅰ
Ⅱ
Ⅱ
**
L1
L2
L1
L2
Solenoid valve kit
Terminal boardClass
field supplied
Fig. 1
Disconnect Switch may be needed
by the National/Local code.
*
It requires that the Class wire and Class wire should be separated.
Ⅰ Ⅱ
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.
TD831183-00_北米向け3WAY.indb 51 15/12/17 16:05:23
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