Table of Contents
Advertisement
Improper operation may lead to personal injury or property damage.
1. The fuse is located on the main board.
2. Install a separate disconnect at the outdoor unit. The power supply, wiring and grounding of
equipment must comply with National, State and/or Local Codes. The power supply must
agree with the equipment nameplate.
3. 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.
4. The communication wiring between the indoor and outdoor units should be at least 14 AWG
stranded wire, with an absolute maximum length of 230 ft. (70m). Shorter lines result in more
robust communication between the indoor and outdoor unit. Please select the appropriate line
length as per the actual installation conditions. The communication wires cannot be spliced
together.
5. For the wired controller: The communication distance between the main board and the wired
controller can be up to 65 ft. (The standard distance is 25 ft.)
Note: When connecting the power supply cord, make sure that the phase of the power supply
matches with the voltage and phase indicated on the nameplate, If not, the compressor will run
improperly.
Grounding Requirements
•
Be sure to follow your local, state and National Electric Codes (NEC) when grounding this
unit.
•
The air conditioner is classified as a Class I appliance and must be grounded.
•
The yellow-green line of the air conditioner is the ground wire and can not be used for other
purposes or cut off, otherwise it would create an electric shock hazard.
•
Do not ground the unit to a utility pipe, arrester or telephone ground. Incomplete ground may
cause electrical shock or fire. A high surge current from lightning or other sources may cause
damage to the air conditioner.
Installation of Controllers
Refer to the Installation Manual of the controller for more details.
Wiring of the Signal Line of the Wired Controller at the Indoor Unit
1. Open the cover of the electric box of the indoor unit.
2. Let the signal line go through the rubber ring.
3. Insert the signal line to the four-pin socked on the printed circuit board of the indoor unit
4. Fix the signal line with a plastic wire tie.
CAUTION
23
Ceiling Concealed Unit
Advertisement
Table of Contents
