DC Inverter U-match Series Duct Type Unit
26
(5). Electric wiring of indoor unit side
Remove the electric box cover from the electric box sub-assy and then connect the wire.
Fig.43
The F, C, O connect to the COMMOM, CLOSE and OPEN terminal of the fresh air valve
respectively.
CAUTION!
① .
The power cord and the wire of the fresh air valve are high-voltage, while the communication
cord and connection wire of the wired controller are low-voltage. They should run separately
against electromagnetic interference.
② .
The high-voltage and low-voltage lines should pass through the rubber rings at different
electric box covers.
③ .
Do not bundle the connection wire of the wired controller and the communication cord
together, or arrange them in parallel, otherwise improper operation would occur.
④ .
The high-voltage and low-voltage lines should be fixed separately and securely, with internal
big clamps for the former and small clamps for the latter.
⑤ .
Tighten the indoor/outdoor connection cord and power cord respectively on the terminal
boards with screws. Faulty connection may cause a fire.
⑥ .
If the indoor unit connection cord (to the outdoor unit) and power supply are wired incorrectly,
the air conditioner may be damaged.
⑦ .
Connect the indoor unit connection cord properly based on the corresponding marks as
shown in Fig.42.
⑧ .
Ground both the indoor and outdoor units by attaching a ground wire.
⑨ .
Unit shall be grounded in compliance with the applicable local and national codes.
(6). Electric wiring of outdoor unit side
Note: When connecting the power supply cord, make sure that the phase of the power
supply matches with the exact terminal board. If not, the compressor will rotate reversely and run
improperly.
Remove the big handle (09~42K) /front board(48/60K) of the outdoor unit and insert the end of
the communication cord and the power cable into the terminal board.
