Bryant 345MAV Installation, Start-Up, And Operating Instructions Manual page 26

ALTITUDE (FT) UNIT SIZE
024040
036040
024060
036060
048060
036080
4001 to 5000‡
048080
060080
048100
060100
060120
ALTITUDE (FT) UNIT SIZE
024040
036040
024060
036060
048060
036080
5001 to 6000‡
048080
060080
048100
060100
060120
ALTITUDE (FT) UNIT SIZE
024040
036040
024060
036060
048060
036080
6001 to 7000‡
048080
060080
048100
060100
060120
ALTITUDE (FT) UNIT SIZE
024040
036040
024060
036060
048060
036080
7001 to 8000‡
048080
060080
048100
060100
060120
See notes at end of table
a. Permanently install perforated disk assembly (factory-
supplied in loose parts bag) in combustion-air elbow
using RTV or by cementing. (See Fig. 35.)
For 120,000 Btuh size units only: Separate the 2 halves
of perforated disk assembly and use only the shouldered
disk half.
b. Determine length of straight portion of combustion-air
inlet pipe from table in Fig. 35.
TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) (CONTINUED)
TERMINATION
TYPE
2 Pipe or 2-in
Concentric
2 Pipe or 2-in
Concentric
2 Pipe or 2-in
Concentric
2 Pipe or 3-in
Concentric
2 Pipe or 3-in.
Concentric
TERMINATION
TYPE
2 Pipe or 2-in
Concentric
2 Pipe or 2-in
Concentric
2 Pipe or 2-in
Concentric
2 Pipe or 3-in
Concentric
2 Pipe or 3-in.
Concentric
TERMINATION
TYPE
2 Pipe or 2-in
Concentric
2 Pipe or 2-in
Concentric
2 Pipe or 2-in
Concentric
2 Pipe or 3-in
Concentric
2 Pipe or 3-in.
Concentric
TERMINATION
TYPE
2 Pipe or 2-in
Concentric
2 Pipe or 2-in
Concentric
2 Pipe or 2-in
Concentric
2 Pipe or 3-in
Concentric
2 Pipe or 3-in.
Concentric
PIPE DIA
(IN.)*
1 2
1-1/2 60 55
2 70 70
1-1/2 15 10
2 64 59
2 44 39
2-1/2 70 70
2-1/2 31 22
3 70 70
3† no disk 53 46
4† no disk 70 70
PIPE DIA
(IN.)*
1 2
1-1/2 57 52
2 70 70
1-1/2 14 9
2 60 55
2 41 36
2-1/2 70 70
2-1/2 29 21
3 70 67
3† no disk 42 35
4† no disk 70 70
PIPE DIA
(IN.)*
1 2
1-1/2 53 48
2 70 70
1-1/2 13 8
2 57 52
2 38 33
2-1/2 70 70
2-1/2 27 19
3 68 63
3† no disk 31 24
4† no disk 70 70
PIPE DIA
(IN.)*
1 2
1-1/2 49 44
2 66 65
1-1/2 12 7
2 53 48
2 36 31
2–1/2 66 65
2–1/2 25 17
3 63 58
3† no disk 20 13
4† no disk 61 56
c. Cut field-supplied 2-in diameter PVC pipe to determined
length.
d. Permanently attach elbow/perforated disk assembly to
straight portion of pipe using RTV or by cementing. (See
Fig. 35.)
—26—
NUMBER OF 90° ELBOWS
3 4 5
50 45 44
70 70 70
5 NA NA
58 53 52
26 21 20
70 70 70
13 12 NA
67 62 57
40 33 26
70 70 70
NUMBER OF 90° ELBOWS
3 4 5
47 42 40
70 70 70
NA NA NA
54 49 48
23 18 17
70 70 70
12 11 NA
62 57 52
29 22 15
70 70 70
NUMBER OF 90° ELBOWS
3 4 5
43 38 37
68 67 66
NA NA NA
50 45 44
21 16 15
68 67 66
10 9 NA
58 53 48
18 11 NA
70 70 67
NUMBER OF 90° ELBOWS
3 4 5
39 34 33
63 62 60
NA NA NA
46 41 40
19 14 12
63 62 60
8 7 NA
53 48 43
7 NA NA
51 46 41
6
39
70
NA
52
11
70
NA
52
20
70
6
35
70
NA
47
8
70
NA
47
9
70
6
32
64
NA
43
6
64
NA
43
NA
62
6
28
59
NA
38
NA
59
NA
38
NA
36