Panasonic CU-4KS31NBU CU-4KS31NBU Owner's Manual - Page 108

Wiring Instructions, General Precautions on Wiring, Recommended Wire Length and Diameter, Table 6

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5. Wiring Instructions 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) Provide a power outlet to be used exclusively for each unit, with a power supply disconnect and circuit breaker for overcurrent protection provided in the exclusive line. (3) To prevent possible hazard due to insulation failure, the unit must be grounded. (4) Each wiring connection must be done tightly and in accordance with the wiring system diagram. Wrong wiring may cause the unit to misoperate or become damaged. (5) Do not allow wiring to touch the refrigerant tubing, compressor, or any moving parts of the fan. (6) 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. 5-2. Recommended Wire Length and Diameter Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your local electrical codes. Carefully observe these regulations when carrying out the installation. Table 6 shows maximum wire lengths for control line and power line and fuse or circuit capacity. NOTE Refer to the wiring system diagram (Fig. 25a or 25b) for the meaning of (A), (B), and (C) in Table 6. Refer to your local codes or in the absence of local codes see the National Electric Code: ANSI/NFPA70. Table 6 Model AWG CU-3KS19NBU CU-4KS24NBU CU-4KS31NBU Max. Power Line Length (ft.) Max. Control Line Length (ft.) (A) (B) (C) (#12) (#14) Fuse or Circuit Capacity 85 (Max.) 82 (Max.) 15 A 85 (Max.) 82 (Max.) 20 A 85 (Max.) 100 (Max.) 20 A # ... AWG (American Wire Gauge) 22

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22
5.
Wiring Instructions
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)
Provide a power outlet to be used exclusively for each
unit, with a power supply disconnect and circuit break-
er for overcurrent protection provided in the exclusive
line.
(3)
To prevent possible hazard due to insulation failure,
the unit must be grounded.
(4)
Each wiring connection must be done tightly and in
accordance with the wiring system diagram. Wrong
wiring may cause the unit to misoperate or become
damaged.
(5)
Do not allow wiring to touch the refrigerant tubing,
compressor, or any moving parts of the fan.
(6)
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.
5-2.
Recommended Wire Length and Diameter
Regulations on wiring diameter differ from locality to locality.
For field wiring requirements, please refer to your local elec-
trical codes. Carefully observe these regulations when car-
rying out the installation.
Table 6 shows maximum wire lengths for control line and
power line and fuse or circuit capacity.
Refer to the wiring system diagram (Fig. 25a or 25b) for the
meaning of (A), (B), and (C) in Table 6.
Refer to your local codes or in the absence of local codes
see the National Electric Code: ANSI/NFPA70.
NOTE
Table 6
AWG
Max. Power Line Length (ft.)
(A)
Max. Control Line Length (ft.)
(B) (C)
Fuse
or
Circuit Capacity
Model
(#12)
(#14)
CU-3KS19NBU
85 (Max.)
82 (Max.)
15 A
CU-4KS24NBU
85 (Max.)
82 (Max.)
20 A
CU-4KS31NBU
85 (Max.)
100 (Max.)
20 A
# ... AWG (American Wire Gauge)