5750149-UIM-D-1219
Johnson Controls Ducted Systems
23
Table 7:
Maximum Equivalent Pipe Length
Elevation Sea level - 2000
Elevation 6001 - 7000
Model Input (BTUH)
Pipe Size (in)
Max. equivalent Length (ft)
Model Input (BTUH)
Pipe Size (in)
Max. equivalent Length (ft)
40,000
2
65
40,000
2
40
40,000
3
90
40,000
3
65
40,000
4
150
40,000
4
130
60,000
2
65
60,000
2
40
60,000
3
90
60,000
3
65
60,000
4
150
60,000
4
130
80,000
2
65
80,000
2
30
80,000
3
90
80,000
3
65
80,000
4
150
80,000
4
130
100,000
2
30
100,000
2
5
100,000
3
90
100,000
3
65
100,000
4
150
100,000
4
130
120,000
3
90
120,000
3
65
120,000
4
150
120,000
4
130
Elevation 2001 - 4000
Elevation 7001-8000
Model Input (BTUH)
Pipe Size (in)
Max. equivalent Length (ft)
Model Input (BTUH)
Pipe Size (in)
Max. equivalent Length (ft)
40,000
2
55
40,000
2
35
40,000
3
80
40,000
3
60
40,000
4
145
40,000
4
125
60,000
2
55
60,000
2
35
60,000
3
80
60,000
3
60
60,000
4
145
60,000
4
125
80,000
2
55
80,000
2
25
80,000
3
80
80,000
3
60
80,000
4
145
80,000
4
125
100,000
2
20
100,000
2
NA
100,000
3
80
100,000
3
60
100,000
4
145
100,000
4
125
120,000
3
80
120,000
3
60
120,000
4
145
120,000
4
125
Elevation 4001 - 5000
Elevation 8001-9000
Model Input (BTUH)
Pipe Size (in)
Max. equivalent Length (ft)
Model Input (BTUH)
Pipe Size (in)
Max. equivalent Length (ft)
40,000
2
50
40,000
2
30
40,000
3
75
40,000
3
55
40,000
4
140
40,000
4
120
60,000
2
50
60,000
2
30
60,000
3
75
60,000
3
55
60,000
4
140
60,000
4
120
80,000
2
50
80,000
2
20
80,000
3
75
80,000
3
55
80,000
4
140
80,000
4
120
100,000
2
15
100,000
2
NA
100,000
3
75
100,000
3
55
100,000
4
140
100,000
4
120
120,000
3
75
120,000
3
55
120,000
4
140
120,000
4
120
Elevation 5001 - 6000
Elevation 9001-10000
Model Input (BTUH)
Pipe Size (in)
Max. equivalent Length (ft)
Model Input (BTUH)
Pipe Size (in)
Max. equivalent Length (ft)
40,000
2
45
40,000
2
25
40,000
3
70
40,000
3
50
40,000
4
135
40,000
4
115
60,000
2
45
60,000
2
25
60,000
3
70
60,000
3
50
60,000
4
135
60,000
4
115
80,000
2
35
80,000
2
15
80,000
3
70
80,000
3
50
80,000
4
135
80,000
4
115
100,000
2
10
100,000
2
NA
100,000
3
70
100,000
3
50
100,000
4
135
100,000
4
115
120,000
3
70
120,000
3
50
120,000
4
135
120,000
4
115