En-8
CAUTION
Check that duct work does not exceed the range of external
static pressure of equipment.
Make sure to insulate ducts to avoid condensation.
Make sure to insulate between ducts and walls if metal ducts
are used.
Please explain handling and washing methods of locally
purchased materials to the customer.
To prevent people from touching the parts inside the unit, be
sure to install grilles on the inlet and outlet ports. The grilles
must be designed in such a way that cannot be removed
without tools.
When connecting the duct to the outlet port of the indoor unit,
be sure to insulate the outlet port and the installation screws
to prevent water from leaking around the port.
AR7/9/12/18 Model
• Set the static pressure outside the unit to 0.36 in. WG or
less (the allowable range is between 0 and 0.36 in. WG).
AR24 Model
• Set the static pressure outside the unit to 0.2 in. WG or
less (the allowable range is between 0 and 0.2 in. WG).
Replace the cover as follows.
• Remove the screws, and then remove cover and fan
guard.
• Install the cover with the screws as shown in the following
illustration.
Model Screw
AR7/9/12 9
AR18 11
AR24 13
Screw
Cover
Fan guard
CAUTION
All items removed (cover, fan guard, screws) must be
reinstalled.
Side Inlet - Side Outlet
Insulation material (Field supply)
Aluminum tape
Flange (Field supply)
Air
Duct (Field
supply)
Air
Intake grille
(Field supply)
Side Inlet - Side Outlet (Duct)
Insulation material (Field supply)
Aluminum tape
Aluminum tape
Tapping screw for
fl ange connection
(M4 x 10 mm /
Field supply)
Flange (Field supply)
Flange (Field supply)
Air
Duct (Field
supply)
Air
Intake grille
(Field supply)
Bottom Inlet - Side Outlet
Duct (Field supply)
Intake grille (Field supply)
Air
Air
Outlet side
1 (25)
3/4
(19)
7-13/16
(198)
1
(25)
unit: in. (mm)
Inlet side
4-5/16
(109)
9/16 (15)
P7-7/8 (200)
5-1/8
(130)
1-3/8 (35)
2-3/4
(70)
7/16
(11)
7/16
(11)
unit: in. (mm)
AR7/9/12 AR18 AR24
A 25-9/16 (650) 33-7/16 (850) 41-5/16 (1050)
B
P7-7/8 (200) × 2
= 15-3/4 (400)
P7-7/8 (200) × 3
= 23-5/8 (600)
P7-7/8 (200) × 4
= 31-1/2 (800)
9374342419_02_IM.indb 89374342419_02_IM.indb 8 2015/6/25 10:27:042015/6/25 10:27:04
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