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"
1
28
2
VENT CONN
7
-IN. DIA HOLE
8
POWER ENTRY
7
-IN. DIA
8
ACCESSORY
3
1
-IN. DIA HOLE
"
4
7
39
8
GAS ENTRY
1
-IN. DIA HOLE
2
THERMOSTAT
WIRE ENTRY
SIDE INLET
"
5
24
16
"
11
16
AIR INLET
NOTES:
1. Two additional
2. Minimum return-air openings at furnace, based on metal duct. If flex duct is used,
see flex duct manufacturer's recommendations for equivalent diameters.
3. Minimum return-air opening at furnace:
a. For 800 CFM–16-in. round or 14
b. For 1200 CFM–20-in. round or 14
c. For 1600 CFM–22-in. round or 14
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.
UNIT SIZE
045-08
045-12
070-08
070-12
090-14
090-16
111-12
111-16
111-20
135-16
135-20
155-20
* Oval collar
"
1
2
16
1"
"
3
5
8
"
5
12
16
"
13
5
16
"
2
3
8
3"
"
11
16
7
-in. dia holes are located in the top plate.
8
1
x 12-in. rectangle.
2
1
x 19
2
1
x 23
2
Fig. 1—Dimensional Drawing
Table 1—Dimensions (In.)
A
D
14-3/16
12-9/16
14-3/16
12-9/16
14-3/16
12-9/16
14-3/16
12-9/16
17-1/2
15-7/8
21
19-3/8
17-1/2
15-7/8
21
19-3/8
24-1/2
22-7/8
21
19-3/8
24-1/2
22-7/8
24-1/2
22-7/8
A
"
D
13
16
"
3
5
8
2
"
13
5
16
"
3
2
8
TYP 1 "
"
11
16
E
TYP
1
-in. rectangle.
2
1
-in. rectangle.
4
E
12-11/16
12-11/16
12-11/16
12-11/16
16
19-1/2
16
19-1/2
23
19-1/2
23
23
2
AIRFLOW
"
1
2
16
19"
OUTLET
1"
7
-IN. DIA
8
POWER ENTRY
"
1
1
-IN. DIA
11
2
16
R.H. GAS ENTRY
7
-IN. DIA ACCESSORY
8
1
-IN. DIA THERMOSTAT
2
WIRE ENTRY
SIDE INLET
"
5
8
"
1
23
4
SIDE RETURN
DUCT LOCATION
VENT CONN
SHIP. WT (LB)
4
4
4
4
4
4
4
4
4
5*
5*
5*
"
13
16
"
1
14
2
"
1
3
4
1"
A98520
118
120
124
127
142
155
153
173
176
173
187
194

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