10
3-3. Placing the Unit Inside the Ceiling
This unit is equipped with the drain pump. Check a tape
measure or carpenter’s level.
Before installing the panel for cassette, complete the
work of drain pipe and refrigerant pipe installation.
(1) When placing the unit inside the ceiling, determine the
pitch of the suspension bolts using the supplied full-scale
installation diagram.
Tubing and wiring must be laid inside the ceiling when
suspending the unit. If the ceiling is already constructed,
lay the tubing and wiring into position for connection to
the unit before placing the unit inside the ceiling.
(2) The length of suspension bolts must be appropriate for a
distance between the bottom of the bolt and the bottom
of the unit of more than 18 mm.
3-4. How to Process Tubing
Refer to the section “5. HOW TO PROCESS TUBING”.
(3) Thread the 3 hexagonal nuts and 2 washers onto each
of the 4 suspension bolts. Use 1 nut and 1 washer for the
upper side, and 2 nuts and 1 washer for the lower side,
so that the unit will not fall off the suspension lugs.
Nuts and washers
(use for upper and lower)
Double nut
12 ~ 17 (mm)
Notch
Suspension lug
Suspension bolt
(4) Adjust so that the distance between the unit and the
ceiling bottom is 12 to 17 mm. Tighten the nuts on the
upper side and lower side of the suspension lug.
(5) Remove the protective polyethylene used to protect the
fan parts during transport.
(6) Check with a tape measure or carpenter’s level.
Full-scale installation diagram
(printed on top of container box)
Indoor unit
Indoor unit
Paper model
for installation
Paper model
for installation
Screw for
attaching paper
(4 points)
Open the ceiling
board as large as this
paper outline
Ceiling
board
Ceiling
board
Over 18 mm
12 ~ 17 mm
00_301040_all.indb 10 2018/5/25 10:20:21
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