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Combustion Air Supply And Vent Piping - York GY9 Technical Manual

Gas-fired condensing / high efficiency downflow/horizontal furnaces 91% afue natural gas 60 - 120 mbh input
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036-21560-001 Rev. A (0204)
28-1/2
26-1/2
21-5/8
T'STAT WIRING
7/8" K.O.
HORIZONTAL
CONDENSATE
DRAIN 2" K.O.
7/8" JUNCTION
BOX HOLE
1-1/2" GAS
PIPE ENTRY
CONDENSATE
DRAIN 7/8" K.O.
24-5/8
BTUH (kW)
Input/Output
60/55 (17.57/16.10)
1200 (33.98)
80/75 (23.42/21.96)
1200 (33.98)
80/75 (23.42/21.96)
1600 (45.31)
100/95 (29.28/27.82)
1600 (45.31)
100/95 (29.28/27.82)
2000 (56.63)
120/112 (35.14/32.80)
2000 (56.63)

COMBUSTION AIR SUPPLY AND VENT PIPING

Models Input
BTUH (kW)
Inches (mm)
60,000 (17.6)
60,000 (17.6)
60,000 (17.6)
80,000 (23.4)/1200
80,000 (23.4)/1200
80,000 (23.4)/1600
80,000 (23.4)/1600
100,000 (29.3)
100,000 (29.3)
120,000 (35.1)
Three elbows (two in vent pipe and one in the air intake pipe) are already accounted for and need not be included in the elbow count
from the Table above.
2
29
18-1/2
21-7/8
11-11/16
7-1/2
19-1/4
1-1/4
C
BOTTOM IMAGE
RETURN END
Cabinet
CFM
Size
A (in.)
B
17-1/2
B
17-1/2
C
21
C
21
C
21
D
24-1/2
MAXIMUM ELBOWS AND VENT LENGTHS
Pipe Size
1
1-1/2 (38)
15
2 (51)
60
3 (76)
85
2 (51)
60
3 (76)
85
2 (51)
25
3 (76)
85
2 (51)
25
3 (76)
80
3 (76)
55
A
40
1-1/4
D
2-1/4
Cabinet Dimension
A (cm)
B (in.)
B (cm)
44.4
16-1/4
44.4
16-1/4
53.3
19-3/4
53.3
19-3/4
53.3
19-3/4
62.2
23-1/4
Maximum Number of Elbows*
2
3
4
10
N/A
N/A
55
50
45
80
75
70
55
50
45
80
75
70
20
15
10
80
75
70
20
15
10
75
70
65
50
45
40
29
21-9/16
18-1/2
9-1/8
8-1/2
23-5/8
5/8
5/8
B
20
23-1/4
TOP IMAGE
SUPPLY END
C (in.)
C (cm)
41.3
15-1/8
38.4
41.3
15-1/8
38.4
50.2
18-1/2
47.0
50.2
18-1/2
47.0
50.2
18-1/2
47.0
59.1
21-7/8
55.6
5
6
7
N/A
N/A
N/A
40
35
25
65
60
50
40
35
25
65
60
50
N/A
N/A
N/A
65
60
50
N/A
N/A
N/A
60
55
45
35
25
15
Unitary Products Group
26-1/2
21-15/16
T'STAT WIRING
7/8" K.O.
HORIZONTAL
CONDENSATE
DRAIN 2" K.O.
7/8" JUNCTION
BOX HOLE
1-1/2" GAS
PIPE ENTRY
CONDENSATE
DRAIN 7/8" K.O.
25-3/8
D (in.)
D (cm)
1-3/4
4.44
1-3/4
4.44
2-1/8
5.40
2-1/8
5.40
2-1/8
5.40
2-1/2
6.35
Minimum
Length
8
N/A
1.5
15
1.5
40
10
15
1.5
40
10
N/A
1.5
40
10
N/A
1.5
35
1.5
N/A
1.5

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