HP 422690, Installer'S Information Manual

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Page 10 Installer’s Information Manual
Table 2. Maximum Pipe Length --Non-Direct Vent
ALLOWABLE PIPE LENGTH (feet)
ALTITUDE FURNACE PIPE NUMBER OF SWEEP ELBOWS (SEE NOTE 1)
INPUT DIA. 1 2 3 4 5 6 7 8
54,000 2" 112 108 104 100 96 92 88 84
72,000 2" 55 51 47 43 39 35 31 27
72,000 3" 150 150 150 150 150 150 150 150
0'-1000' 90,000 2" 36 32 28 24 20 16 - -
90,000 3" 150 150 150 145 140 135 130 125
108,000 3" 85 80 75 70 65 60 55 50
126,000 3" 62 57 52 47 42 37 32 27
54,000 2" 97 93 90 86 83 80 76 73
72,000 2" 44 40 36 33 30 26 23 19
72,000 3" 150 150 150 150 150 150 150 150
1001'-2000' 90,000 2" 30 26 23 19 16 - - -
90,000 3" 140 135 130 125 120 115 110 105
108,000 3" 75 70 65 60 55 50 45 40
126,000 3" 50 45 40 35 30 25 20 15
54,000 2" 84 81 78 74 71 67 64 61
72,000 2" 37 34 30 27 24 21 18 15
72,000 3" 150 150 150 150 150 150 150 150
2001'-3000' 90,000 2" 24 21 18 14 11 - - -
90,000 3" 125 120 115 110 105 100 95 90
108,000 3" 50 45 40 35 30 25 20 15
126,000 3" 40 35 30 25 20 15 - -
54,000 2" 71 68 64 61 58 55 51 48
72,000 2" 30 27 23 20 17 13
72,000 3" 150 150 150 150 150 150 150 150
3001'-4000' 90,000 2" 19 16 12 - - - - -
90,000 3" 100 95 90 85 80 75 70 65
108,000 3" 37 32 27 22 17 12 - -
126,000 3" 30 25 20 15 10 - - -
126,000 3" 62 57 52 47 42 37 32 27 See Note 2
below.
54,000 2" 57 54 50 47 44 40 36 33
72,000 2" 25 22 19 16 12 - - -
72,000 3" 150 150 150 150 150 150 150 150
4001'-5000' 90,000 3" 85 80 75 70 65 60 55 50
108,000 3" 85 80 75 70 65 60 55 50 See Note 2
126,000 3" 62 57 52 47 42 37 32 27
54,000 2" 43 40 37 33 30 27 24 20
72,000 2" 21 18 14 11 - - - -
72,000 3" 150 150 150 150 150 150 150 150
5001'-6000' 90,000 3" 70 65 60 55 50 45 40 35
108,000 3" 85 80 75 70 65 60 55 50 See Note 2
126,000 3" 62 57 52 47 42 37 32 27
54,000 2" 110 106 104 100 96 92 88 84
72,000 2" 50 46 43 40 36 32 29 25
72,000 3" 150 150 150 150 150 150 150 150
6001'-7000' 90,000 3" 150 150 150 145 140 135 130 125 See Note 2
108,000 3" 85 80 75 70 65 60 55 50
126,000 3" 62 57 52 47 42 37 32 27
54,000 2" 97 93 90 86 83 80 76 73
72,000 2" 50 46 43 40 36 32 29 25
72,000 3" 150 150 150 150 150 150 150 150
7001'-8000' 90,000 3" 150 150 150 145 140 135 130 125 See Note 2
108,000 3" 85 80 75 70 65 60 55 50
126,000 3" 60 55 50 45 40 35 30 25
54,000 2" 84 81 78 74 71 67 64 61
72,000 2" 41 38 34 31 28 24 21 17
72,000 3" 150 150 150 150 150 150 150 150
8001'-9000' 90,000 3" 150 150 150 145 140 135 130 125 See Note 2
108,000 3" 70 65 60 55 50 45 40 35
126,000 3" 45 40 35 30 25 20 15
54,000 2" 71 68 64 61 58 55 51 48
72,000 2" 35 31 28 25 21 18 15 -
72,000 3" 150 150 150 150 150 150 150 150
9001'-10000' 90,000 3" 150 150 150 145 140 135 130 125 See Note 2
108,000 3" 55 50 45 40 35 30 25 20
126,000 3" 35 30 25 20 15 10 - -
NOTE 1: The table assumes the use of sweep elbows. If using hard 90
?
elbows, the vent length should be decreased an
additional 3 feet for every elbow used.
NOTE 2: The shaded portions of the table require the high altitude pressure switch in order to operate the furnace at the listed
vent lengths.