Carrier WeatherExpert 48LC Series Service And Maintenance Instructions page 29

Single package rooftop gas heating/electric cooling unit
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ELEVATION
ft (m)
NG
ORIFICE SIZE
33
0-2000 (610)
35
2000 (610)
35
3000 (914)
36
4000 (1219)
36
5000 (1524)
37
6000 (1829)
38
7000 (2134)
39
8000 (2438)
40†
9000 (2743)
41†
10000 (3048)
42†
11000 (3353)
43†
12000 (3658)
43†
13000 (3962)
44
14000 (4267)
LEGEND
NG
— Natural Gas
LP
— Liquid Propane
*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 12 — Altitude Compensation* (48LCL/M/N*04-06) - Low NOx Units
ELEVATION
ft (m)
0-2000 (610)
2000 (610)
3000 (914)
4000 (1219)
5000 (1524)
6000 (1829)
7000 (2134)
8000 (2438)
9000 (2743)
10000 (3048)
11000 (3353)
12000 (3658)
13000 (3962)
14000 (4267)
LEGEND
NG
— Natural Gas
*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.
1
= CRLPELEV001A00
2
= CRLPELEV002A00
3
= CRLPELEV003A00
Table 11 — Altitude Compensation* (48LCD/E/F/S/R/T*04-06)
72,000 BTUH
NOMINAL
LP
ORIFICE SIZE
51
1
4
51
1
4
1
52
4
52
1
4
52
1
4
52
2
4
53
2
4
53
2
4
53
4
54
4
54
4
54
4
55
4
56†
2
115,000 BTUH
NOMINAL
NG
LP
ORIFICE SIZE
ORIFICE SIZE
33
50
1
35
51
1
35
1
51
36
51
1
36
51
1
37
52
2
38
52
2
39
52
2
40†
53
41†
53
42†
53
43†
54
43†
54
44
55
2
1
= CRLPELEV001A00
2
= CRLPELEV002A00
3
= CRLPELEV003A00
4
= CRLPELEV004A00
60,000, 90,000
BTUH NOMINAL
NG ORIFICE SIZE
38
2
39
2
40†
41†
41†
42†
42†
43†
43†
44
2
44
2
45
2
47
3
48
3
29
150,000 BTUH
NOMINAL
NG
ORIFICE SIZE
30†
3
30†
4
4
31
1
31
4
1
31
4
1
31
4
1
32
4
1
33
4
1
4
34
1
35
4
1
36
4
1
37
4
2
38
4
2
40†
4
120,000
BTUH NOMINAL
NG ORIFICE SIZE
32
1
33
1
33
1
35
1
35
1
36
1
36
1
37
2
38
2
40†
41†
42†
43†
43†
LP
ORIFICE SIZE
46
3
47
3
47
3
48
3
48
3
48
3
49
3
49
3
50
3
50
3
51
4
51
4
52
4
53
4

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