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(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 as shown in Fig. 3-88.
(3) Thread the 3 hexagonal nuts and 2 washers (field 
supply) onto each of the 4 suspension bolts as shown in 
Fig. 3-89. 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.
(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.
Fig. 3-89
Nuts and washers 
(use for upper and lower)
Double nut
12 – 17 (mm)
Notch
Suspension lug
Suspension bolt
3-35. How to Process Tubing
Refer to the section “5. HOW TO PROCESS TUBING”.
Panaindoor336013Eng.indb33Panaindoor336013Eng.indb33 2012/03/2121:07:152012/03/2121:07:15