Fujitsu AR 7 Installation Manual page 8

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
AR7/9/12
AR18
AR24
All items removed (cover, fan guard, screws) must be
reinstalled.
En-8
CAUTION
Screw
9
11
13
Screw
Cover
Fan guard
CAUTION
Side Inlet - Side Outlet
Insulation material (Field supply)
Aluminum tape
Flange (Field supply)
Air
Intake grille
Duct (Field
(Field supply)
supply)
Side Inlet - Side Outlet (Duct)
Insulation material (Field supply)
Aluminum tape
Flange (Field supply)
Air
Duct (Field
supply)
(Field supply)
Bottom Inlet - Side Outlet
Duct (Field supply)
Air
Intake grille (Field supply)
Outlet side
Inlet side
4-5/16
(109)
AR7/9/12
A 25-9/16 (650)
P7-7/8 (200) × 2
B
= 15-3/4 (400)
Air
Flange (Field supply)
Aluminum tape
Tapping screw for
fl ange connection
(M4 x 10 mm /
Field supply)
Intake grille
Air
Air
unit: in. (mm)
P7-7/8 (200) 5-1/8
2-3/4 (130)
(70)
unit: in. (mm)
AR18 AR24
33-7/16 (850) 41-5/16 (1050)
P7-7/8 (200) × 3 P7-7/8 (200) × 4
= 23-5/8 (600) = 31-1/2 (800)
1 (25)
1-3/8 (35)
9/16 (15)