-2-
1. Two additional
7
/
8
-in. dia knockouts are located in the top plate.
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
1
/
2
x 12-in. rectangle.
b. For 1200 CFM-20-in. round or 14
x 19 -in. rectangle.
c. For 1600 CFM-22-in. round or 14
x 22
-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.
NOTES:
1
/
2
1
/
2
1
/
2
1
/
16
A
Media/
Filter Cabinet
A
B
16"
17"
16"
20"
21"
20"
24"
25"
24"
23 "
22
3
/
4
"
Furnace Side
23
1
/
8
"
Centerline Screw Slots
25 "
Duct Side
23
3
/
4
"
Opening with Flanges Bent
22
1
/
2
"
Opening
5
3
/
4
"
B
O
pe
nin
g
A02210
28-7/8"
25-1/4"
22-9/16"
JUNCTION BOX
LOCATION
7/8" DIA
ACCESSORY
1/2" DIA THERMOSTAT
WIRE ENTRY
3-15/16"
LEFT HAND GAS
ENTRY
33-5/16"
24-7/8"
5-1/2"
7/8" DIA. ACCESSORY
11/16"
21-5/8"
BOTTOM INLET
1-11/16"
13/16"
11/16"
1-9/16"
2-9/16"
4-13/16"
AIRFLOW
19"
OUTLET
13/16"
11/16"
8-7/16"
1-7/16"
ALTERNATE
JUNCTION BOX
LOCATION (TYP)
VENT OUTLET
5 PLACES (TYP)
3-3/4"
1-1/2" DIA.
RIGHT HAND
GAS ENTRY
1/2" DIA. THERMOSTAT
WIRE ENTRY
SIDE INLET
14-7/8"
7/8" DIA. ACCESSORY
1-1/4"
1"
22-1/16"
A
D
F
E
26-1/8"
(VENT CONNECTION)
24"
(CASING)
1) 135 and 155 size furnaces require five-inch vents. Use a 4-5 inch vent adapter between
furnace and vent stack.
2) See Installation Instructions for complete installation requirements.
315AAV/315JAV
UNIT SIZE
A
(CABINET
WIDTH)
D
(SUPPLY
WIDTH)
E
(BOTTOM
RETURN
WIDTH)
VENT
CONNECTION
SIZE
(see notes 1 & 2)
14-3/16
12-9/16
12-11/16
9-5/16
4
17-1/2
15-7/8
16-1/8
11-9/16
4
21
19-3/8
19-1/2
13-5/16
24-1/2
22-7/8
23
15-1/16
4 (note 1)
24-1/2
22-7/8
23
15-1/16
4 (note 1)
048090
036070
060110
066135
066155
SHIPPING
WEIGHT
127
151
162
177
183
4
F
(C.L. TOP &
VENT OUTLET)
BOTTOM
16
16
20
24
24
MEDIA
CABINET
SIZE
Summary of Contents for 315AAV
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