14
A06451
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
CONDENSATE
DRAIN TRAP
LOCATION
(ALTERNATE
UPFLOW)
7
⁄
8
-IN. DIA
ACCESSORY
POWER ENTRY
7
⁄
8
-IN. DIA
POWER CONN
26
15
⁄
16
"
24
1
⁄
2
"
22
5
⁄
16
"
2-IN. COMBUSTION-
AIR CONN
1
⁄
2
-IN. DIA
GAS CONN
2-IN. VENT CONN
1
⁄
2
-IN. DIA THERMOSTAT
ENTRY
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
AIRFLOW
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
"
BOTTOM INLET
18
1
⁄
4
"
22
11
⁄
16
"
A LTERNATE
1
⁄
2
-IN. DIA GAS CONN
2-IN. COMBUSTION-
AIR CONN
1
⁄
2
-IN. DIA
GAS CONN
7
⁄
8
-IN. DIA
POWER CONN
1
⁄
2
-IN. DIA
THERMOSTAT ENTRY
2-IN. VENT CONN
14
1
⁄
2
"
TYP
SIDE INLET
NOTES:
1. Minimum return-air openings at furnace, based on metal duct. If flex duct is used,
see flex duct manufacturer’s recommendations for equivalent diameters.
2. Minimum return-air opening at furnace:
a. For 800 CFM–16-in. round or 14
1
/
2
x 12-in. rectangle.
b. For 1200 CFM–20-in. round or 14
1
/
2
x 19
1
/
2
-in. rectangle.
c. For 1600 CFM–22-in. round or 14
1
/
2
x 23
1
/
4
-in. rectangle.
d. For airflow requirements above 1800 CFM, see Air Delivery table in Product Data
literature for 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
return air openings for airflow requirements above 1800 CFM at 0.5
W
W
.
.C. ESP.
9
7
⁄
16
"
TYP
26
15
⁄
16
"
TYP
CONDENSATE
DRAIN LOCATION
(UPFLOW)
30
1
⁄
2
"
9
⁄
16
"
TYP
CONDENSATE
DRAIN LOCATION
(UPFLOW)
26
1
⁄
4
"
26
1
⁄
4
"
A06451
Dimensions (in.)
UNIT SIZE
A
D
E
060---14
17---1/2
15---7/8
16
080---14
21
19---3/8
19---1/2
080---20
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
* These dimensions reflect the wider casing for the 96.6% AFUE furnace.
58U
VB