Bryant 579F User Manual page 75

UNIT 580F
0
036† 1045
036** 1455
048† 1175
048** 1455
060† 1300
060** 1685
072,073†† 1460
072,073** 1685
*Approximate fan rpm shown.
†Indicates alternate motor and drive package.
UNIT 580F
0
090,091† 840
090,091** 935
090,091†† 1080
103† 935
103†† 1080
120,121† 935
120,121*** 1085
120,121†† 1130
150,151† 1080
150,151*** 1130
*Approximate fan rpm shown.
†Indicates standard motor and drive package.
**Indicates alternate drive package only.
ALTITUDE COMPENSATION* — 580F036-073
STANDARD UNITS
74,000 AND 115,000 BTUH
NOMINAL INPUT
ELEVATION
(ft)
Natural Gas Liquid Propane
Orifice Size† Orifice Size†
0-2,000 33
2,000 36
3,000 36
4,000 37
5,000 38
6,000 40
7,000 41
8,000 42
9,000 43
10,000 44
11,000 45
12,000 46
13,000 47
14,000 48
*As the height above sea level increases, there is less oxygen per cubic foot of air.
Therefore, heat input rate should be reduced at higher altitudes.
†Orifices available through your local Bryant distributor.
ALTITUDE COMPENSATION* — 580F036-073
LOW NOx UNITS
60,000 AND 90,000 BTUH
ELEVATION
NOMINAL INPUT
(ft)
Natural Gas Orifice Size†
0-2,000 38
2,000 40
3,000 41
4,000 42
5,000 43
6,000 43
7,000 44
8,000 45
9,000 46
10,000 47
11,000 48
12,000 49
13,000 50
14,000 51
*As the height above sea level increases, there is less oxygen per cubic foot of air.
Therefore, the input rate should be reduced at higher altitudes.
†Orifices are available through your local Bryant distributor.
PERFORMANCE DATA (cont)
FAN RPM AT MOTOR PULLEY SETTINGS* — 580F036-073
1 / 1 1 1 / 2
2 2
1009 973 937 901
1423 1392 1360 1328
1135 1094 1054 1013
1423 1392 1360 1328
1266 1233 1200 1166
1647 1608 1570 1531
1421 1382 1343 1304
1647 1608 1570 1531
FAN RPM AT MOTOR PULLEY SETTINGS* — 580F090-151
1 / 1 1 1 /
2 2
815 790 765
910 885 860
1025 1007 988
910 885 860
1025 1007 988
910 885 860
1060 1035 1010
1112 1087 1062
1060 1035 1015
1112 1087 1062
150,000 BTUH
NOMINAL INPUT
Natural Gas Liquid Propane
Orifice Size† Orifice Size†
43 30 37
44 31 39
45 31 40
45 32 41
46 32 42
47 34 43
48 35 43
49 36 44
50 37 45
50 39 46
51 41 47
52 42 48
52 43 49
53 44 50
120,000 BTUH
NOMINAL INPUT
Natural Gas Orifice Size
32
33
35
36
37
38
39
41
42
43
44
44
46
47
MOTOR PULLEY TURNS OPEN
2 1 / 3 3 1 /
2 2
865 829 793
1297 1265 1233
973 932 892
1297 1265 1233
1133 1100 1066
1493 1454 1416
1265 1226 1187
1493 1454 1416
**Indicates high-static motor and drive package.
††Indicates standard motor and drive package.
MOTOR PULLEY TURNS OPEN
2 2 1 / 3
2
740 715 690
835 810 785
970 952 933
835 810 785
970 952 933
835 810 785
985 960 935
1037 1012 987
990 970 950
1037 1012 987
††Indicates high-static motor and drive package.
***Indicates alternate motor and drive package.
ALTITUDE COMPENSATION* — 580F090-151
125,000,180,000, AND 224,000
BTUH NOMINAL INPUT
ELEVATION
(ft)
Natural Gas
Orifice Size†
0-2,000 31
2,000 32
3,000 32
4,000 32
5,000 33
6,000 34
7,000 35
8,000 36
9,000 37
10,000 38
11,000 39
12,000 40
13,000 41
14,000 42
*As the height above sea level increases, there is less oxygen per cubic foot of air.
Therefore, heat input rate should be reduced at higher altitudes.
†Orifices available through your local Bryant distributor.
ALTITUDE DERATING FACTOR*
ELEVATION
(ft)
0-2,000
2,001-3,000
3,001-4,000
4,001-5,000
5,001-6,000
*Derating of the unit is not required unless the heating value of the gas exceeds the val-
ues listed in the table above, or if the elevation exceeds 6000 ft. Derating conditions
must be 4% per thousand ft above 2000 ft. For example, at 4000 ft, if the heating value
of the gas exceeds 1000 Btu/ft
above 6000 ft, the same formula applies. For example, at 7000 ft, the unit will require a
28% derating of the maximum heating value per the National Fuel Gas Code.
IMPORTANT: Local utility companies may be reducing heat content of gas at altitudes
above 2000 ft. If this is being done, changing spuds may not be required.
75
4 4 1 / 5
2
757 721 685
1202 1170 1138
851 811 770
1202 1170 1138
1033 1000 966
1377 1339 1300
1148 1109 1070
1377 1399 1300
3 1 / 4 4 1 / 5
2 2
665 635 615 590
760 735 710 685
915 897 878 860
760 735 710 685
915 897 878 860
760 735 710 685
910 885 860 835
962 937 912 887
925 905 880 860
962 937 912 887
250,000 BTUH
NOMINAL INPUT
Liquid Propane Natural Gas
Orifice Size† Orifice Size†
41 30
42 30
42 31
42 32
43 33
43 34
44 35
44 36
45 37
46 38
47 39
47 40
48 41
48 42
MAXIMUM HEATING VALUE
(Btu/ft
1,100
1,050
1,000
950
900
3 , the unit will require a 16% derating. For elevations
5 1 / 6
2
— —
1107 1075
— —
1107 1075
933 900
— —
— —
— —
5 1 / 6
2
— —
— —
— —
— —
— —
— —
— —
862 830
— —
862 830
Liquid Propane
Orifice Size†
38
39
40
41
42
43
43
44
44
45
45
46
47
47
3 )