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139
INSTALLATION
Fresh Air Intake
Duct (9K~18K)
Indoor unit can take fresh air from the reserved fresh air intake, the size of the fresh air
intake hole is 2‑1/2 in.(65mm) (9K~18K).
Please follow the steps below when needed.
Reserved Fresh
A
ir Intake
1) Cut off the reserved metal circular hole on the base board.
2) Connect air duct with the fresh air intake.
Cassette
It is possible to inject fresh air to indoor unit from the rese rved fresh air intake, the size of the fresh air
intake hole is 3‑1/4in. × 1‑11/16in. (83mm×43mm) (9K/12K)，3in. × 2‑1/16in. (75mm×53mm)
(18K/24K/36K).
Please follow the steps below when needed.
9K~18K
1) Cut off the reserved metal rectangular hole on the base board.
2)
Cut off the foam material on the a rectangular hole
3) Create duct transition to fresh air piping.
C ut off th
e
rectangle
hole
R
eserved Fresh
A
ir Intake
Reserved Fresh
A
ir Intake
9K~12K
18K/24K/36K
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