Grandaire WFAR080B048 - Page 25

INSTALLATION INSTRUCTIONS Gas Furnace: WFAR
440 01 7104 02 25
Specifications subject to change without notice.
TABS
FILTER
FRAME
FILTER
DOOR
FURNACE
OPENING
TABS
(TYP.)
OPENING
1
1
4”
/
23 ⅛”
(59 cm)
25 ⅛”
(64 cm)
⅜”
(1 cm)
½”
(1.3 cm)
2 ⅜”
(6 cm
)
17 ⅛”
(43.5 cm)
¾”
(2 cm)
16 ⅛”
(41 cm
)
14 ½”
(37 cm)
L12F023
1 ¼”
(3 cm)
(3 cm)
L12F023
Figure 19 -- Accessory Side Filter Rack
A11095
Figure 20 -- Accessory Bottom Filter
PLENUM
OPENING
C
A
B
D
FLOOR
OPENING
DOWNFLOW
SUBBASE
SHEET METAL
PLENUM
FLOOR
OPENING
FURNACE
(OR COIL CASING
WHEN USED)
COMBUSTIBLE
FLOORING
APPROVED
COIL ASSEMBLY
OR
COIL BOX
FURNACE
SHEET METAL
PLENUM
FLOOR
OPENING
COMBUSTIBLE
FLOORING
A10491
Figure 21 -- Installation on Combustible Flooring