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Fig.
2—Dimensional
Drawing
Dimensions
(in.)
UNIT
SIZE
A
D
E
040-08
17-1/2
15-7/8
16
040-12
17-1/2
15-7/8
16
060-08
17-1/2
15-7/8
16
060-12
17-1/2
15-7/8
16
060-16
17-1/2
15-7/8
16
080-12
17-1/2
15-7/8
16
080-16
17-1/2
15-7/8
16
080-20
21
19-3/8
19-1/2
100-16
21
19-3/8
19-1/2
100-20
21
19-3/8
19-1/2
120-20
24-1/2
22-7/8
23
140-20
24-1/2
22-7/8
23
A05053
17
5
⁄
16
"
24
1
⁄
2
"
27
9
⁄
16
"
TYP
27
5
⁄
8
"
29
11
⁄
16
"
TYP
30
13
⁄
16
"
32
5
⁄
8
"
TYP
33
1
⁄
4
"
TYP
CONDENSA
T
E
DRAIN TRAP
LOCA
TION
(AL
TERNA
T
E
UPFLO
W)
7
⁄
8
-IN.
DIA
A
CCESSOR
Y
PO
WER ENTR
Y
7
⁄
8
-IN.
DIA
PO
WER CONN
CONDENSA
TE DRAIN
TRAP LOCA
TION
(DO
WNFLO
W &
HORIZONT
A
L LEFT)
26
15
⁄
16
"
24
1
⁄
2
"
22
5
⁄
16
"
2
-IN.
COMB
USTION-
AIR CONN
1
⁄
2
-IN.
DIA
GAS CONN
2
-IN.
VENT
CONN
1
⁄
2
-IN.
DIA
THERMOST
A
T
ENTR
Y
22
11
⁄
16
"
SIDE INLET
23
1
⁄
4
"
TYP
SIDE INLET
1
1
⁄
4
"
1
"
E
INLET
11
⁄
16
"
11
⁄
16
"
D
13
⁄
16
"
13
⁄
16
"
OUTLET
A
AIRFLO
W
OUTLET
26
15
⁄
16
"
28
1
⁄
2
"
22
5
⁄
16
"
19
"
13
⁄
16
"
5
⁄
8
"
5
⁄
16
"
1
"
39
7
⁄
8
"
22
1
⁄
4
"
TYP
11
⁄
16
"
7
⁄
16
"
24
3
⁄
16
"
BO
TT
OM INLET
18
1
⁄
4
"
22
11
⁄
16
"
CONDENSA
TE DRAIN
TRAP LOCA
TION
(DO
WNFLO
W &
HORIZONT
A
L RIGHT)
OR AL
TERNA
T
E
1
⁄
2
-IN.
DIA GAS CONN
2-IN.
COMB
USTION-
AIR CONN
1
⁄
2
-IN.
DIA
GAS CONN
7
⁄
8
-IN.
DIA
PO
WER CONN
1
⁄
2
-IN.
DIA
THERMOST
A
T ENTR
Y
2-IN.
VENT
CONN
DIMPLE LOCA
T
ORS
FOR HORIZONT
AL
HANGING
14
1
⁄
2
"
TYP
SIDE INLET
NO
TES:
1.
Minim
um retur
n-air openings at fur
nace
, based on metal duct.
If fle
x
duct is used,
see fle
x
duct man
u
facturer’
s
recommendations f
or equiv
a
lent diameters
.
2.
Minim
um retur
n-air opening at fur
n
ace:
a.
F
o
r 800 CFM–16-in.
round or 14
1
/
2
x 12-in.
rectangle
.
b
.
F
o
r 1200 CFM–20-in.
round or 14
1
/
2
x 19
1
/
2
-in.
rectangle
.
c.
F
o
r 1600 CFM–22-in.
round or 14
1
/
2
x 23
1
/
4
-in.
rectangle
.
d.
F
o
r airflo
w
requirements abo
ve 1800 CFM, see Air Deliv
e
ry
tab
le in Product Data
liter
ature f
or specific use of single side inlets
. The use of both side inlets
, a
combination of 1 side and the bottom, or the bottom only will ensure adequate
retur
n
air openings f
o
r airflo
w requirements abo
ve 1800 CFM at 0.5
”
W.
C
.
E
S
P
.
9
7
⁄
16
"
TYP
26
15
⁄
16
"
TYP
CONDENSA
T
E
DRAIN LOCA
T
ION
(UPFLO
W)
30
1
⁄
2
"
9
⁄
16
"
TYP
CONDENSA
T
E
DRAIN LOCA
T
ION
(UPFLO
W)
26
1
⁄
4
"
26
1
⁄
4
"
3