12
12
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
AL 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
AL 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
A
L
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
alent diameters
.
2.
Minim
um retur
n-air opening at fur
nace:
a.
F
or 800 CFM–16-in.
round or 14
1
/
2
x 12-in.
rectangle
.
b
.
F
or 1200 CFM–20-in.
round or 14
1
/
2
x 19
1
/
2
-in.
rectangle
.
c.
F
or 1600 CFM–22-in.
round or 14
1
/
2
x 23
1
/
4
-in.
rectangle
.
d.
F
or 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
or airflo
w
requirements abo
ve 1800 CFM at 0.5
W
.C
.
ESP
.
9
7
⁄
16
"
TYP
26
15
⁄
16
"
TYP
CONDENSA
T
E
DRAIN LOCA
TION
(UPFLO
W
)
30
1
⁄
2
"
9
⁄
16
"
TYP
CONDENSA
T
E
DRAIN LOCA
TION
(UPFLO
W
)
26
1
⁄
4
"
26
1
⁄
4
"
D
IMENS
IONS
(I
N
/MM)
UN
IT
SI
ZE
A
D
E
060
---
14
17
---
1/2
/444.5
15
---
7/8
/403.3
16
/406.4
080
---
14
21
/533.4
19
---
3/8
/492.2
19
---
1/2
/495.3
080
---
20
21
/533.4
19
---
3/8
/492.2
19
---
1/2
/495.3
100
---
20
21
/533.4
19
---
3/8
/492.2
19
---
1/2
/495.3
120
---
20
24
---
1/2
/622.3
22
---
7/8
/581.0
23
/584.2
