Fig.
1—Dimensional
Drawing
DIMENSIONS
(IN.)
UNIT
SIZE
A
D
E
036080
17-1/2
15-7/8
16
048080
17-1/2
15-7/8
16
060080
21
19-3/8
19-1/2
A98647
24
1
⁄
2
"
27
9
⁄
16
"
TYP
27
5
⁄
8
"
30
13
⁄
16
"
32
5
⁄
8
"
TYP
29
11
⁄
16
"
TYP
33
1
⁄
4
"
TYP
7
⁄
8
-IN. DIA
ACCESSORY
POWER ENTRY
7
⁄
8
-IN. DIA
POWER CONN
CONDENSATE DRAIN
TRAP LOCATION
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
"
OUTLET
26
15
⁄
16
"
28
1
⁄
2
"
22
5
⁄
16
"
19
"
13
⁄
16
"
5
⁄
8
"
39
7
⁄
8
"
11
⁄
16
"
24
3
⁄
16
"
INLET
18
1
⁄
4
"
22
11
⁄
16
"
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
30
1
⁄
2
"
OUTLET FLANGE
AS SHIPPED
(REMOVE IN FIELD)
E
INLET
11
/
16
"
11
/
16
"
D
13
/
16
"
13
/
16
"
OUTLET
A
AIRFLOW
26
1
⁄
4
"
26
1
⁄
4
"
CONDENSATE DRAIN
TRAP LOCATION
OR ALTERNATE
1
⁄
2
-IN. DIA GAS CONN
NOTES:
Minimum return-air opening at furnace, based on metal
duct. If flex duct is used, see flex duct manufacturer's
recommendation for equivalent diameters:
1. For 800 CFM 16-in. round or 14-
1
/
2
X 12-in. rectangle.
2. For 1200 CFM 20-in. round or 14-
1
/
2
X 19-
1
/
2
in. rectangle.
3. For 1600 CFM 22-in. round or 14-
1
/
2
X 23-
1
/
4
in. rectangle.
—2—
Summary of Contents for 351DAS
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