Carrier 58MXA - Vent Extension Pipe

VENT EXTENSION PIPE
Furnaces with 100,000 Btuh and larger inputs are supplied with a
PVC vent extension pipe (2-in. diameter by 12-in. long). This pipe
has a built-in channel to assist vent condensate disposal. When this
vent extension pipe is supplied, it must be used to connect the field
vent pipe to furnace inducer housing on ALL upflow and down-
flow applications.
NOTE: See label on vent extension pipe for proper installation.
This pipe may be shortened if an elbow is used to connect vent
extension tube to field-installed vent pipe.
Table 7—Maximum Allowable Pipe Length (ft)
ALTITUDE (FT) UNIT SIZE
TERMINATION
TYPE
PIPE DIA
(IN.)*
NUMBER OF 90° ELBOWS
123456
0 to 2000
040-08
040-12
2 Pipe or 2-in
Concentric
1 5 NA NA NA NA NA
1-1/2 70 70 65 60 60 55
2 707070707070
060-08
060-12
060-16
2 Pipe or 2-in
Concentric
1-1/2 20 15 10 5 NA NA
2 707070707070
080-12
080-16
080-20
2 Pipe or 2-in
Concentric
1-1/2 10 NA NA NA NA NA
2 555035303020
2-1/2 70 70 70 70 70 70
100-16
100-20
2 Pipe or 3-in
Concentric
2 5 NA NA NA NA NA
2-1/2 40 30 20 20 10 NA
3 707070707070
120-20
2 Pipe or 3-in.
Concentric
2-1/2 one disk 10 NA NA NA NA NA
3† 45 40 35 30 25 20
3† no disk 70 70 70 70 70 70
140-20
2 Pipe or 3-in.
Concentric
2-1/2 one disk 5 NA NA NA NA NA
3† one disk 40 35 30 25 20 15
3† no disk 60 56 52 48 44 40
4† no disk 70 70 70 70 70 70
ALTITUDE (FT) UNIT SIZE
TERMINATION
TYPE
PIPE DIA
(IN.)*
NUMBER OF 90° ELBOWS
123456
2001 to 3000
040-08
040-12
2 Pipe or 2-in
Concentric
1-1/2 67 62 57 52 52 47
2 707070707070
2 Pipe or 2-in
Concentric
1–1/2 17 12 7 NA NA NA
060-08
060-12
060-16
2 706766616161
080-12
080-16
080-20
2 Pipe or 2-in
Concentric
2 494430252515
2-1/2 70 70 70 70 70 70
100-16
100-20
2 Pipe or 3-in
Concentric
2–1/2 35 26 16 16 6 NA
3 707070706661
120-20
2 Pipe or 3-in.
Concentric
3 14 9 NA NA NA NA
3† no disk 70 70 63 56 50 43
4† no disk 70 70 70 70 70 70
140-20
2 Pipe or 3-in.
Concentric
3† one disk 20 15 10 5 NA NA
3† no disk 39 35 31 27 23 19
4† no disk 70 70 70 70 70 70
ALTITUDE (FT) UNIT SIZE
TERMINATION
TYPE
PIPE DIA
(IN.)*
NUMBER OF 90° ELBOWS
123456
3001 to 4000
040-08
040-12
2 Pipe or 2-in
Concentric
1-1/2 64 59 54 49 48 43
2 707070707070
060-08
060-12
060-16
2 Pipe or 2-in
Concentric
1–1/2 16 11 6 NA NA NA
2 686362575756
080-12
080-16
080-20
2 Pipe or 2-in
Concentric
2 464128232213
2-1/2 70 70 70 70 70 70
100-16
100-20
2 Pipe or 3-in
Concentric
2-1/2 33 24 15 14 5 NA
3 707070666156
120-20
2 Pipe or 3-in.
Concentric
3† no disk 65 58 51 44 38 31
4† no disk 70 70 70 70 70 70
140-20
2 Pipe or 3-in.
Concentric
3† one disk 11 6 NA NA NA NA
3† no disk 30 26 22 18 14 10
4† no disk 70 70 70 70 70 70
See notes at end of table
28