High Altitude Deration Chart - York DGAA056BDTA Installation Instructions Manual

Sealed combustion downflow gas furnace
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035-16328-002
Rev. C (0902)
HIGH ALTITUDE DERATION CHART
Elevation
Sea Level
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
56,000--lnput
Odfice
Drill
Pa_ #
Dia.
Size
0.136
29
9951-1361
0.136
29
9981--1361
0.128
30
9981--1281
0.128
30
9951--1281
0.128
30
9951-1281
0.128
30
9951-1281
0.129
31
9951--1291
0.120
31
9951-1201
0.120
31
9951_-1201
0.116
32
9951--1161
NATURAL GAS
70,000--Input
Odfce
Dnll
Pa_ #
Dia.
Size
0,154
23
9951--1541
0.149
25
9951--1491
0,149
25
9951--1491
0,147
26
9951-1471
0,144
27
9951-1441
0.144
27
9951-1441
0.140
28
9951--1401
0.136
29
9951--1361
0.136
29
9951--1361
0.128
30
9951--1281
77,000--Input
90,000--Input
Odfice
Ddll
Odfice
Ddll
Pa_ #
Pa_ #
Dia
Size
Dia.
Size
0.161
20
9951--1611
0.180
15
9951-1801
0.157
22
9951-1571
0.177
16
9951--1771
0.157
22
9951-1571
0.173
17
9951--1731
0.154
23
9951=1541
0.173
17
9951--1731
0.152
24
9951-1521
0.169
18
9951--1691
0.149
25
9951--1491
0.166
19
9981--1661
0.147
26
9951--1471
0.161
20
9951-1611
0.144
27
9951--1441
0.161
20
9951--1611
0.140
28
9951--1401
0.157
22
9951-1571
0.136
29
9951--1361
0.152
24
9951-1521
PROPANE GAS
56,000--Input
70,000--Input
77,000--Input
90,000--Input
Elevation
Orifice
Ddll
Pa_ #
Odfice
Ddll
Pad#
Orifice
Drill
Odfice
Ddll
Dia.
Size
Dia.
Size
Dia.
Size
Pa_ #
Dia.
Size
Pa_ #
Sea Level
0.082
48
9951--0821
0.093
42
9951-0931
0.098
40
9951_-0981
0.106
36
9951-1061
2,000
0.081
46
9951--0811
0.093
42
9951-0931
0.096
41
9981-0961
0.104
37
9951--1041
3,000
0.078
47
9951--0781
0.089
43
9951-0891
0.093
42
9951-0931
0.101
38
9951--1011
4,000
0.078
47
9951--0781
0.089
43
9951--0891
0.093
42
9951--0931
0.101
38
9951-1011
5,000
0.078
47
9951--0781
0.089
43
995%-0891
0.093
42
9951--0931
0.099
39
9981--0991
6,000
0.076
48
9981--0761
0.086
44
9951--0861
0089
43
9951--0891
0.098
40
9951--0981
7,000
0.076
48
9951--0761
0.086
44
9951--0861
0.089
43
9951--0891
0.096
41
9951-0961
8,000
0,073
49
9951--0731
0.082
45
9951--0821
0.086
44
9951--0861
0.096
41
9951-0961
9,000
0.073
49
9951--0731
0.081
46
9951-0511
8.086
44
9951--0881
0.093
42
9951--0931
10,000
0.070
50
9951--0731
0.078
47
9951--0781
0.082
48
9951-6821
0.059
43
9981-0891
Table shows 4% Input Reduction per 1,000 feet Elevation.
For Canadian high altitude (2000 - 4500 feet), reduce gas
Reference Source: NFPA No. 54, ANSI Z 223.1, National
manifold pressure to 3.0" W.C. for natural gas, 9,0"
Fuel Gas Code.
W.C. for Propane gas.
Unitary Products Group
21

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