Panasonic FV-08VQL3 Installation Instructions Manual page 11

Installation
III
4.Insert the fan body between joists.
Make sure the fan body is level and square (perpendicular)
with the joists.
Keep the flange and joists on same level.
CAUTION:
1. Joist spacing A should be between 350mm (13 7/8")
and 430mm (17").
2.
Don't fix the junction box flap to the ceiling joist in this
installation.
5. Secure the installation bracket III to ceiling joist using
long screws (M4X30).
6. Secure the fan body to ceiling joists using long screws
(M4X30) in horizontal direction with installation bracket
I and IV.
(Between joist mounting installation) continued
Ceiling joist
(Fig. 19)
Ventilating fan
Ceiling joist
(Fig. 20)
Installation bracket III
(Fig. 21)
Installation bracket IV
11
A
3 5 0 - 4 3 0 m m
( 1 3 7 / 8 " - 1 7 " )
Ceiling joist
Installation bracket I
4-Long screws
Ceiling joist
Adapter
junction box flap
Fig. 19
Fig. 20
Ceiling joist
Fig. 21