Daikin FCQ18AAVJU Installation Manual Download

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English

[unit: in. (mm)]

60 (1,500)

or more

80 (2,000) or more

160 (4,000) or more

Indoor unit

Exhaust fan

(NOTE 1)

Lighting

*60 (1,500)

or more

At le

ast 60

(1,500)

from

ny ﬁ

xture

Obstacles

From the

wall

If the air outlet is in a close proximity to

both sides of the wall surface in a corner

installation etc., the distance of at least

80 in. (2,000 mm) is recommended

(NOTE2)

Fig. 2

NOTE

1. If the air passage is obstructed, or if the installation space

requirements are not met, performance may decrease or

the thermostat may easily turn off due to reduced airflow

rate and intake of discharged air.

In a roadside store or restaurant, the air flows in the order of

outdoor

→

attic

→

living space because the ventilation sys-

tem creates negative pressure in living space. As a result,
condensation may arise since the temperature and humid-
ity around the indoor unit become similar to the outdoor
environment due to direct intake of outside air into the attic.

CAUTION

•

Any vents, light fixtures, or other appliances which may
disturb the airflow might soil the ceiling if too close, so fol

low

Fig. 2 when installing.

Note)

1. This restriction applies to the exposed type lighting,

but does not apply to the recessed type, which does
not protrude below the ceiling line.

2. The clearance from the wall (indicated with *) must be 20 in.

(500 mm) or more if the air outlet is closed or the horizontal

blade is set to Airflow block and, if the corners (left and right

corners of the target air outlet) are also closed by 8 in. (200
mm) or more.

For how to set the airflow direction (including Airflow block)

with the horizontal blade, refer to

Individual Airflow Direc

tion in the operation manual attached to the remote controller.

• Install the indoor and outdoor units, power supply wiring,

remote controller wiring and transmission wiring at least
40 in. (1 m) away from televisions or radios to prevent im-
age interference or noise.
(Depending on the radio waves, a distance of 40 in. (1 m)

may not be sufficient to eliminate the noise.)

•

Install the indoor unit as far as possible from fluorescent lamps.

• Localized temperature difference from the room temperature,

if too large, can affect how the infrared floor sensor judges.

(This may occur, for example, in an area where floor heating/

high-temperature heat generating equipment is installed.)

• Each sensor has been set so that the center of the sensing

area is located in the center of the product 32 in. (800 mm)

above the floor (in case of the infrared presence sensor) or 0
in. (0 mm) above the floor (in case of the infrared floor sensor)
when the ceiling height is approximately 8-3/4 ft. (2.7 m).

(2) Ceiling height

• This indoor unit can be installed in a space of which

ceiling height is up to 11-1/2 ft. (3.5 m) (Type 30 · 36 · 42 ·
48: 13-3/4 ft. (4.2 m))

•

However, if the ceiling height exceeds 8-3/4 ft. (2.7 m)

(Type 30~48: 10-1/2 ft. (3.2 m)), it is necessary to set
from the remote controller on site. Refer to the section
9. FIELD SETTING and 10. TEST OPERATION.

(3) Direction of the air discharge

• Select the number of directions of the optimum air

discharge for the shape or the position of the room.

• The number of directions of the air discharge can be

changed by installing a sealing material.

•

When installing a sealing material, the field setting

from the remote controller is required. For details,
refer to the installation manual attached to the sealing
materials.
(It is set to the setting position number

01 (Standard ·

All round outlet) when shipped from the factory.)

• To use the optional sealing material kit to change the

setting of air discharge direction (4-way blow type (with
corners sealed)/3-way blow type/2-way blow type),
refer to the installation manual attached to it.

*: Refrigerant

piping

[Direction of air discharge]

All round

4-way

3-way

2-way

Fig. 3

NOTE

Depending on the temperature, humidity and airflow condi

tions in the attic due to the indoor airflow (air draft from ex

haust fan, etc.), outside air intake and so on, condensation
may arise on the ceiling near the corner air outlet.
In that case, close the corner air outlet using the sealing mate-
rial kit (sold separately).

(4) Use suspension bolts for installation.

Investigate if the installation place can withstand the
weight of the indoor unit and, if necessary, hang the
indoor unit with bolts after it is reinforced by beams etc.
(Refer to the installation pattern paper (5) for the mounting pitch.)

(5)

Infrared presence/floor sensor’s sensing area

The sensing area is shown in the figure below.

32 in. (800 mm)

[Sensing area]

Infrared ﬂoor

sensor

Infrared

presence sensor

Infrared presence

sensor

Infrared ﬂoor