Bryant Preferred 581J04-14, Service And Maintenance Instructions, Page: 39 / 148

39
* As the height above sea level increases, there is less oxygen per cubic
ft. of air. Therefore, heat input rate should be reduced at higher altitudes.
† Not included in kit. May be purchased separately through dealer.
Table 16 — Altitude Compensation* (Sizes 07-12)
NATURAL GAS
ELEVATION
NOMINAL HEAT INPUT
72K BTUH 125K BTUH 150K BTUH 180K BTUH 224K BTUH 250K BTUH
FT M
Orifice
Size
Input
(btu/hr)
Orifice
Size
Input
(btu/hr)
Orifice
Size
Input
(btu/hr)
Orifice
Size
Input
(btu/hr)
Orifice
Size
Input
(btu/hr)
Orifice
Size
Input
(btu/hr)
0 to
2,000
0 to
610
33 1 72,000 31 1 125,000 32 1 150,000 31 1 180,000 31 1 224,000 †30 250,000
2,000
610 35 1 66,240 32 1 115,000 33 1 138,000 32 1 165,600 32 1 206,080 †30 230,000
3,000
914 35
1
63,360 32
1
110,000 35
1
132,000 32
1
158,400 32
1
197,120 31
1
220,000
4,000
1219 36 1 60,480 33 1 105,000 35 1 126,000 33 1 151,200 33 1 188,160 31 1 210,000
5,000
1524 36 1 57,600 33 1 100,000 35 1 120,000 33 1 144,000 33 1 179,200 31 1 200,000
6,000
1829 37 2 54,720 35 1 95,000 36 1 114,000 33 1 136,800 33 1 170,240 31 1 190,000
7,000
2134 38
2
51,840 35
1
90,000 36
1
108,000 35
1
129,600 35
1
161,280 32
1
180,000
8,000
2438 38 2 48,960 36 1 85,000 36 1 102,000 36 1 122,400 36 1 152,320 33 1 170,000
9,000
2743 †40 46,080 37
2
80,000 37
2
96,000 37
2
115,200 37
2
143,360 33
1
160,000
10,000
3048 †41 43,200 38 2 75,000 38 2 90,000 38 2 108,000 38 2 134,400 35 1 150,000
11,000
3353 †42 40,320 39 2 70,000 †40 84,000 39 2 100,800 39 2 125,440 36 1 140,000
12,000
3658 †42 37,440 †41 65,000 †40 78,000 †41 93,600 †41 116,480 37 2 130,000
13,000
3962 †43 34,560 †42 60,000 †41 72,000 †42 86,400 †42 107,520 38
2
120,000
14,000
4267 †43 31,680 †43 55,000 †41 66,000 †43 79,200 †43 98,560 †40 110,000
PROPANE GAS
ELEVATION
NOMINAL HEAT INPUT
72K BTUH 125K BTUH 150K BTUH 180K BTUH 224K BTUH 250K BTUH
FT M
Orifice
Size
Input
(btu/hr)
Orifice
Size
Input
(btu/hr)
Orifice
Size
Input
(btu/hr)
Orifice
Size
Input
(btu/hr)
Orifice
Size
Input
(btu/hr)
Orifice
Size
Input
(btu/hr)
0 to
2,000
0 to
610
51 4 72,000 49 3 125,000 50 3 150,000 48 3 180,000 48 3 224,000 46 3 250,000
2,000
610 51
4
66,240 50
3
115,000 51
4
138,000 49
3
165,600 49
3
206,080 47
3
230,000
3,000
914 52 4 63,360 50 3 110,000 51 4 132,000 49 3 158,400 49 3 197,120 47 3 220,000
4,000
1219 52 4 60,480 50 3 105,000 51 4 126,000 49 3 151,200 49 3 188,160 48 3 210,000
5,000
1524 52 4 57,600 51 4 100,000 51 4 120,000 50 3 144,000 50 3 179,200 48 3 200,000
6,000
1829 52 4 54,720 51 4 95,000 52 4 114,000 50 3 136,800 50 3 170,240 48 3 190,000
7,000
2134 53 4 51,840 51 4 90,000 52 4 108,000 50 3 129,600 50 3 161,280 49 3 180,000
8,000
2438 53
4
48,960 52
4
85,000 52
4
102,000 51
4
122,400 51
4
152,320 49
3
170,000
9,000
2743 53 4 46,080 52 4 80,000 53 4 96,000 51 4 115,200 51 4 143,360 50 3 160,000
10,000
3048 54 4 43,200 52 4 75,000 53 4 90,000 52 4 108,000 52 4 134,400 50 3 150,000
11,000
3353 54 4 40,320 53 4 70,000 53 4 84,000 52 4 100,800 52 4 125,440 51 4 140,000
12,000
3658 54 4 37,440 53 4 65,000 53 4 78,000 53 4 93,600 53 4 116,480 51 4 130,000
13,000
3962 55 4 34,560 54 4 60,000 53 4 72,000 53 4 86,400 53 4 107,520 52 4 120,000
14,000
4267 55
4
31,680 54
4
55,000 55
4
66,000 54
4
79,200 54
4
98,560 53
4
110,000
ORIFICE ACC. KIT PN
XX 1 CRLPELEV001A00
XX 2 CRLPELEV002A00
XX 3 CRLPELEV003A00
XX 4 CRLPELEV004A00