Carrier 58MCB080 - Combustion-Air and Vent Piping: 0-2000 ft Altitude; 0-2000 ft Altitude Vent Piping

12
58MCB
ALTITUDE (FT)
UNIT SIZE
(BTUH)
DIRECT VENT (2-PIPE) ONLY
NON-DIRECT VENT
(1-PIPE) ONLY
NUMBER OF 90° ELBOWS
TERMINATION
TYPE
PIPE DIA
(IN.)*
PIPE DIA
(IN.)*
123456
0 to 2000
40,000
2 Pipe or 2-in
Concentric
1 1 5 NANANANANA
1-1/2 1-1/2 70 70 65 60 60 55
2 2 70 70 70 70 70 70
60,000
2 Pipe or 2-in
Concentric
1-1/2 1-1/2 20 15 10 5 NA NA
2 2 70 70 70 70 70 70
80,000
2 Pipe or 2-in
Concentric
1-1/2 1-1/2 10 NA NA NA NA NA
2 2 55 50 35 30 30 20
2-1/2 2-1/2 70 70 70 70 70 70
100,000
2 Pipe or 3-in
Concentric
2 2 5 NANANANANA
2-1/2 2-1/2 40 30 20 20 10 NA
3 3 70 70 70 70 70 70
120,000
2 Pipe or 3-in.
Concentric
2-1/2 one disk 2-1/2 10 NA NA NA NA NA
3† NA 45 40 35 30 25 20
3† no disk 3† 70 70 70 70 70 70
140,000
2Pipeor3-in.
Concentric
2-1/2 one disk NA 5 NA NA NA NA NA
3†onedisk NA 403530252015
3† no disk NA 60 56 52 48 44 40
4† no disk NA 70 70 70 70 70 70
ALTITUDE (FT)
UNIT SIZE
(BTUH)
DIRECT VENT (2-PIPE) ONLY
NON-DIRECT VENT
(1-PIPE) ONLY
NUMBER OF 90° ELBOWS
TERMINATION
TYPE
PIPE DIA
(IN.)*
PIPE DIA
(IN.)*
123456
2001 to 3000
40,000
2 Pipe or 2-in
Concentric
1-1/2 1-1/2 67 62 57 52 52 47
2 2 70 70 70 70 70 70
60,000
2 Pipe or 2-in
Concentric
1-1/2 1-1/2 17 12 7 NA NA NA
2 2 70 67 66 61 61 61
80,000
2 Pipe or 2-in
Concentric
2 2 49 44 30 25 25 15
2-1/2 2-1/2 70 70 70 70 70 70
100,000
2 Pipe or 3-in
Concentric
2-1/2 2-1/2 35 26 16 16 6 NA
3 3 70 70 70 70 66 61
120,000
2 Pipe or 3-in.
Concentric
3 NA 14 9 NANANANA
NA 3† 63 62 62 61 61 61
3† no disk NA 70 70 63 56 50 43
4† no disk 4† no disk 70 70 70 70 70 70
140,000
2 Pipe or 3-in.
Concentric
3† one disk NA 20 15 10 5 NA NA
3† no disk NA 39 35 31 27 23 19
4† no disk NA 70 70 70 70 70 70
ALTITUDE (FT)
UNIT SIZE
(BTUH)
DIRECT VENT (2-PIPE) ONLY
NON-DIRECT VENT
(1-PIPE) ONLY
NUMBER OF 90° ELBOWS
TERMINATION
TYPE
PIPE DIA
(IN)*
PIPE DIA
(IN.)*
123456
3001 to 4000
40,000
2 Pipe or 2-in
Concentric
1-1/2 1-1/2 64 59 54 49 48 43
2 2 70 70 70 70 70 70
60,000
2 Pipe or 2-in
Concentric
1-1/2 1-1/2 16 11 6 NA NA NA
2 2 68 63 62 57 57 56
80,000
2 Pipe or 2-in
Concentric
2 2 46 41 28 23 22 13
2-1/2 2-1/2 70 70 70 70 70 70
100,000
2 Pipe or 3-in
Concentric
2-1/2 2-1/2 33 24 15 14 5 NA
3 3 70 70 70 66 61 56
120,000
2Pipeor3-in.
Concentric
3† no disk NA 65 58 51 44 38 31
NA 3† 59 59 58 57 57 56
4† no disk 4† no disk 70 70 70 70 70 70
140,000
2 Pipe or 3-in.
Concentric
3† one disk NA 11 6 NA NA NA NA
3† no disk NA 30 26 22 18 14 10
4† no disk NA 70 70 70 70 70 70
See notes at end of table
Combustion-air and vent piping for Direct Vent/2-Pipe
(All Sizes) and Non-Direct Vent/1-Pipe (Sizes 040
through 120 Only) Applications