Manual 2100-392
Page 20
HI-BOY MODELS – FILTER LOCATIONS,
& REMOVAL AND REPLACEMENT
PROCEDURES
16 x 25 x 1 external filter racks are supplied as standard
equipment for all FH models (20 x 25 x 1 is standard
for FH110D60D model). A 14 x 23 opening is to be cut
into either the left or right side of the furnace depending
upon installation requirements. See Figure 12 for
typical installation of a 16 x 25 x 1 filter rack centered
over the 14 x 23 cutout.
FILTERS
All models are shipped with filters. See Table 14 for
sizes. See following information. Hi-Boy models are
supplied with an external filter rack which can be
installed on either left or right side. The counterflow
models require a bracket installation and final filter
location projects into return air plenum attachment for
furnace. See Figure 14. Refer to Figure 14 for Lo-Boy
models which have filters internally mounted in blower
compartment at rear of furnace.
FIGURE 12
TYPICAL INSTALLATION OF A 16x25x1
FILTER RACK
MIS-1342
MIS-1343
TABLE 14
FILTER SIZES FOR OIL FURNACES
l
e
d
o
M
e
z
i
S
D
6
3
D
5
8
0
H
F
y
o
B
-
i
H
)
1
(
1
x
5
2
x
6
1
W
D
8
4
D
0
1
1
H
F
y
o
B
-
i
H
)
1
(
1
x
5
2
x
6
1
W
D
0
6
D
0
1
1
H
F
y
o
B
-
i
H
)
1
(
1
x
5
2
x
0
2
W
D
6
3
D
5
8
0
F
L
F
D
6
3
D
5
8
0
R
L
F
s
y
o
B
-
o
L
)
1
(
1
x
0
2
x
6
1
W
D
8
4
D
0
1
1
F
L
F
D
8
4
D
0
1
1
R
L
F
s
y
o
B
-
o
L
)
1
(
1
x
0
2
x
0
2
W
D
0
6
D
0
4
1
R
L
F
y
o
B
-
o
L
)
1
(
1
x
5
2
x
0
2
W
D
6
3
D
5
8
0
C
F
w
o
lf
r
e
t
n
u
o
C
)
1
(
)
1
(
1
x
0
2
x
0
1
1
x
0
2
x
5
1
W
W
FIGURE 13
TYPICAL INSTALLATION OF A 20x25x1
FILTER RACK
Содержание FH085D36D
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