Bryant Preferred 581J04-14, Service And Maintenance Instructions, Page: 38 / 148

38
* 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 15 — Altitude Compensation* (Sizes 04-06)
NATURAL GAS
ELEVATION
NOMINAL HEAT INPUT
72K BTUH 115KBTUH 150K BTUH
Feet Meters Orifice Size Input (btu/hr) Orifice Size Input (btu/hr) Orifice Size Input (btu/hr)
0 to 2,000
0-610 33 1 72,000 33 1 115,000 †30 150,000
2,000
610 35 1 66,240 35 1 105,800 †30 138,000
3,000
914 35
1
63,360 35
1
101,200 31
1
132,000
4,000
1219 36 1 60,480 36 1 96,600 31 1 126,000
5,000
1524 36
1
57,600 36
1
92,000 31
1
120,000
6,000
1829 37 2 54,720 37 2 87,400 31 1 114,000
7,000
2134 38 2 51,840 38 2 82,800 32 1 108,000
8,000
2438 39 2 48,960 39 2 78,200 33 1 102,000
9,000
2743 †40 46,080 †40 73,600 33
1
96,000
10,000
3048 †41 43,200 †41 69,000 35 1 90,000
11,000
3353 †42 40,320 †42 64,400 36
1
84,000
12,000
3658 †43 37,440 †43 59,800 37 2 78,000
13,000
3962 †43 34,560 †43 55,200 38 2 72,000
14,000
4267 44 2 31,680 44 2 50,600 †40 66,000
PROPANE GAS
ELEVATION
NOMINAL HEAT INPUT
72K BTUH 115K BTUH 150K BTUH
Feet Meters Orifice Size Input (btu/hr) Orifice Size Input (btu/hr) Orifice Size Input (btu/hr)
0 to 2,000
0-610 51 4 72,000 50 3 115,000 46 3 150,000
2,000
610 51 4 66,240 51 4 105,800 47 3 138,000
3,000
914 52 4 63,360 51 4 101,200 47 3 132,000
4,000
1219 52 4 60,480 51 4 96,600 48 3 126,000
5,000
1524 52 4 57,600 51 4 92,000 48 3 120,000
6,000
1829 52
4
54,720 52
4
87,400 48
3
114,000
7,000
2134 53 4 51,840 52 4 82,800 49 3 108,000
8,000
2438 53 4 48,960 52 4 78,200 49 3 102,000
9,000
2743 53 4 46,080 53 4 73,600 50 3 96,000
10,000
3048 54 4 43,200 53 4 69,000 50 3 90,000
11,000
3353 54 4 40,320 53 4 64,400 51 4 84,000
12,000
3658 54
4
37,440 54
4
59,800 51
4
78,000
13,000
3962 55 4 34,560 54 4 55,200 52 4 72,000
14,000
4267 †56 31,680 55 4 50,600 53 4 66,000
ORIFICE ACC. KIT PN
XX 1 CRLPELEV001A00
XX 2 CRLPELEV002A00
XX
3
CRLPELEV003A00
XX 4 CRLPELEV004A00