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•
Earth resistance should meet the national standard requirement.
• The yellow and green double color line of air conditioning unit is ground wire, do not move, splice or use it for any
other purpose. Unit ground terminal cannot be connected with a self-tapping screw or risk electric shock.
•
This equipment must be properly grounded per local codes. Please take reliable measures to ensure that the
ground connecting is secure and all equipments is grounded.
• The user's power supply must provide reliable grounding. Please don't connect the ground wire to the following
places. (1) water pipe (2) gas pipe; (3) drainage pipe; (4) The other places where are unreliable.
• The communication terminal block for indoor unit and outdoor unit is marked as P/Q.
•
The device within the dotted box is optional and needs to be configured separately, which is not the standard
configuration of the unit.
Communication wiring figure
Standard
controller
Optional
controller
The third party
controller -2
The third party
controller -1
I/O board
CN6
CN7
CN13
CN3
COM
P/Q
P/Q
L
N
GND
220-240V~
supply
Power
Leakage
protection
device
Circuit
breaker
Neutral wire
Live wire
EARTH
Earth wire
Electrical wiring diagram
Outdoor unit
Indoor unit
Indoor unit
