
F90A,B 
F90A | F90B | 
  | 
  | 
  | 
  | 
  | 
  | |||
  | 
  | 
  | 
  | 
  | 
  | |||
7/8 (22) DIAMETER  | 
  | 
  | 
  | 24 (610)  | ||||
4  | 
  | 
  | ||||||
  | 
  | 
  | 16 (406)  | |||||
KNOCKOUT  | 
  | 
  | (102)  | 
  | 
  | |||
  | 
  | 
  | ||||||
  | 
  | 
  | 
  | 
  | ||||
 ![]()
 ![]()
LATCHES
(743)
24
(610)16
(406)
2 (51)
 9 (229) 
 2
1  | 
24
(610)
(743)POWER CORD
![]()
(83)
7 (178)  | 1  | 
  | 
16
(406)
3 (76)
 8
 (203)
2
KEYHOLE
3/8 (10) DIAMETER
3/4 (19)![]()
 3/8 (10) DIAMETER
1ALLOW AT LEAST 16 INCHES (406 MILLIMETERS) FROM
FRONT OF F90 TO WALL FOR INSTALLATION AND REMOVAL OF CELLS.
2ALLOW AT LEAST 9 INCHES (229 MILLIMETERS) FROM BACK OF F90 TO WALL FOR REMOVAL OF COVER.
M920
Fig. 7. F90 installation dimensions in in. (mm).
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | TYPICAL 2 x 8 INCH  | ||
DRILL 5/16 INCH  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | WOOD JOISTS,  | |||||
  | 
  | 
  | 
  | 
  | 
  | 
  | 16 INCH CENTERS  | ||||||
(8 mm)  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | ||||||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | ||||
PILOT  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | |||
HOLES  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | |||
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
  | 
Mounting the F90 Using Threaded Steel Rod
1.  | Arrange two 2 x 4 supports as shown in Fig. 9. | 
2.  | Drill four 5/16 inch pilot holes through the supports  | 
  | using the mounting template to locate holes. | 
3.  | Mount the steel rods to the supports. | 
5/8 INCH (19 mm)
DIAMETER KEY HOLES PROVIDED IN AIR CLEANER HOUSING
 REMOVE
CELLS
AND
FILTERS
3/8 x 3 INCH
(10 x 76 mm)
LAG SCREW AND WASHER
4.  | Lift the F90 to the mounting location. | 
5.  | Mount the F90 to the steel rods by attaching the nuts  | 
  | and washers.  | 
M1533
Fig. 8. Mounting the F90 using lag screws in joist
applications.
9  |