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2-9. Duct for Fresh Air
There is a duct connection part on sideface of the
indoor unit. (Fig. 2-16)
Optional air-intake plenum (including duct connection
box and flange) can be attached to the indoor unit.
Air-intake plenum
CMB-GSJ80
CMB-GSJ140U
(1) Accessories
Check that the following parts are in the box when unpacking.
NAME
Cord with socket
(9P)
Screw
(M5 × L125)
Screw
(M4 × L12)
Duct connection box
Duct connection flange
(2) Installation
Installation steps (a) to (e) are the same for both the
CMB-GSJ80U and the GSJ140U. The drawing
illustrates installation of air-intake plenum to the
CMB-GSJ80U.
(a) Installing the air-intake plenum
Set the air-intake plenum to the indoor unit taking
care not to set the incorrect direction. (Fig. 2-17)
Fasten the air-intake plenum with the accessory
screws. (M5 × L125, 4pcs) (Fig. 2-17)
(b) Installing the duct connection box
Fasten the duct connection flange to the duct
connection box with the accessory screws.
(M4 × L12, 4pcs) (Fig. 2-18)
Put the duct connection box into the rectangular
hole of the air-intake plenum and fasten it to the
both sides of the indoor unit and plenum with the
accessory screws. (M4 × L12, 3pcs) (Fig. 2-18)
(c) Installing the indoor unit
Install the indoor unit to the ceiling.
(Install the indoor unit according to items 2-1 to 2-6.)
CAUTION
Type
25
36, 48
QT'Y
Connecting line. Not necessary for
1
intaking fresh air.
Air-intake filter
4
(for fastening)
Duct connection flange/ box
7
(for fastening)
1
(for fresh air)
(for connecting fresh air duct )
1
When installing in a pre-
existing location, install the
indoor unit before installing
the duct connection box.
For fresh air intake
REMARKS
Installation
screws
Air-intake
plenum
Indoor unit
11
55
Detail of fresh air intake
Fig. 2-16
Socket cover
Panel lead wire (8P)
Fig. 2-17
2264_X_S
Clamper
8P socket (red)
(electrical
component box)
8P socket (red)
(ceiling panel side)
1975_X_S
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