Eco Air CTBU-09HWFN1-M(C), Service Manual, Page: 35 / 219

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4. Service Space
4.1 Indoor Unit
A5/A6 Duct Units
Ensure enough space required for installation and maintenance.
2 0 0 m m ( 7 .8 7 in ) o r m o r e
3 0 0 m m ( 1 1 .8 1 in ) o r m o r e
6 0 0 m m x 6 0 0 m m /2 3 .6 2 in x 2 3 .6 2 in
C h e c k o r ific e
All the indoor units reserve the hole to connect the fresh air pipe. The hole size as following
Cassette Units
Unit: mm