Duct Design - Toshiba MMU-AP0091H Installation Manual

6-7. Concealed Duct High Static Pressure Type

Duct design

1. In order to prevent short circuits, design the duct
work so that the intake and discharge openings
are not adjacent to each other.
2. The indoor unit does not have a built-in air filter.
Always install the air filter (Local procure) in a
location that permits easy maintenance, such as
behind the intake grille. (If no air filter is installed,
dust will collect in the heat exchanger, which may
cause the air conditioner to fail or to leak.)
<Air supply connecting flange>
MMD-AP0181H to AP0241H
400
25
4-Ø8 hole
12 426
MMD-AP0361H
670
25
6-Ø8 hole
12 348
MMD-AP0481H
25
8-Ø8 hole
12 316
MMU-AP0721H to AP0961YH
25
65 65 65 65
<Air supply side connecting flange>
If the air conditioner unit and the canvas joint are connected with the rivets, the fan and the refrigerating cycle
become unavailable to be checked. Be sure to use the bolts for tightening the flange.
(Fixing bolts M6 × 12 Field-supplied)
25
12
25
348 12
770
25
164 316 12
1080
(I/D)
65 65 65 65 65 65 65 65
REQUIREMENT
<Overview of duct connection>
NOTE : Parts except air conditioner unit are to be
locally procured.
Canvas joint
Air supply port
Silencer chamber
<Air return connecting flange>
MMD-AP0181H to AP0361H
25
6-Ø8 hole
25
MMD-AP0481H
25
8-Ø8 hole
25 300
25
65 65 65 65 65 65 65 65 65 65
<Return air side connecting flange>
61
Canvas joint
(Air conditioner)
Silencer
chamber
Air inlet
Air filter
Check port
550
25
275 275 25
25
900
300 300 25
1080
(I/D)
65 65