4.7 Electrical Wiring
4.7.1 Wiring Precautions
WARNING !
(1) Before obtaining access to terminals, all supply circuits must be disconnected.
(2) Improperly installed and grounded field wiring poses fire & electrocution hazards. For high
voltage connections, flexible electrical conduit is recommended whenever vibration
transmission may create a noise problem within the structure. To avoid these hazards, you
MUST follow requirements for field wiring installation and grounding as described in the
National Electrical Codes (NEC) and your local/state electrical codes. All field wiring MUST be
performed by qualified personnel. Failure to follow these requirements could result in death or
serious injury.
NOTICE!
(1) The power source capacity must be the sum of the air conditioner current and the current of
other electrical appliances. When the current contracted capacity is insufficient, change the
contracted capacity.
(2) The rated voltage of the unit is as shown in Table 3.4 and Table 3.5
(3) Before turning on, verify that the voltage is within the 187~252V range (for single phase unit).
(4) Always use a grounded terminal and install a special receptacle to supply power to the air
conditioner. For high voltage connections, flexible electrical conduit is recommended
whenever vibration transmission may create a noise problem within the structure.
(5) Use a dedicated breaker and receptacle matched to the capacity of the air conditioner.
4.7.2 Electrical Wiring
For strand wiring (Fig. 4.37)
1. Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation about 10
mm (3/8").
2. Using a screwdriver, remove the terminal screw(s) on the terminal board.
3. Using a round terminal fastener or pliers, securely clamp a round terminal to each stripped
wire end.
4. Position the round terminal wire, and replace and tighten the terminal screw with a
screwdriver.(Fig. 4.38)
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