Thermo Pride Thermo Pace Downflow/Horizontal Furnace (CSA) - Manual (Page 12)

Page 12 Installer’s Information Manual
Table 1. Maximum Pipe Length --Direct Vent
ALLOWABLE PIPE LENGTH (feet of each pipe)
ALTITUDE FURNACE PIPE NUMBER OF SWEEP ELBOWS (each pipe) (SEE NOTE 1)
INPUT DIA. 1 2 3 4 5 6 7 8
54,000 2" 40 40 40 40 40 40 40 40
72,000 2" 40 40 37 33 30 27 23 20
72,000 3" 40 40 40 40 40 40 40 40
0'-1000' 90,000 2" 30 26 22 19 15 11 - -
90,000 3" 40 40 40 40 40 40 40 40
108,000 3" 40 40 40 40 40 40 40 40
126,000 3" 40 40 40 40 35 30 25 20
54,000 2" 40 40 40 40 40 40 40 40
72,000 2" 40 37 33 29 25 21 19 15
72,000 3" 40 40 40 40 40 40 40 40
1001'-2000' 90,000 2" 25 22 19 16 12 - - -
90,000 3" 40 40 40 40 40 40 40 40
108,000 3" 40 40 40 40 40 40 40 40
126,000 3" 40 38 33 28 22 16 11 -
54,000 2" 40 40 40 40 40 40 40 40
72,000 2" 35 33 29 25 21 17 13 -
72,000 3" 40 40 40 40 40 40 40 40
2001'-3000' 90,000 2" 22 19 16 14 - - - -
90,000 3" 40 40 40 40 40 40 40 40
108,000 3" 40 40 40 40 40 40 40 40
126,000 3" 35 30 25 20 15 10 - -
54,000 2" 40 40 40 40 40 40 40 40
72,000 2" 30 28 26 24 22 20 18 17
72,000 3" 40 40 40 40 40 40 40 40
3001'-4000' 90,000 2" 15 13 11 - - - - -
90,000 3" 40 40 40 40 40 40 40 40
108,000 3" 40 40 40 40 40 40 40 40
126,000 3" 30 25 20 15 10 - - -
126,000 3" 40 40 40 40 35 30 25 20 See Note 2
below. 54,000 2" 40 40 40 40 40 40 40 40
72,000 2" 26 22 17 14 12 - - -
72,000 3" 40 40 40 40 40 40 40 40
4001'-5000' 90,000 3" 40 40 40 40 40 40 40 40
108,000 3" 40 40 40 35 30 25 20 15
108,000 3" 40 40 40 40 40 40 40 40 See Note 2
below. 126,000 3" 40 40 40 40 35 30 25 20
54,000 2" 40 40 40 40 40 40 40 40
72,000 2" 21 18 14 11 - - - -
72,000 3" 40 40 40 40 40 40 40 40
5001'-6000' 90,000 3" 40 40 40 40 40 40 40 40
108,000 3" 40 35 30 25 20 15 10 -
108,000 3" 40 40 40 40 40 40 40 40 See Note 2
126,000 3" 40 40 40 40 35 30 25 20
54,000 2" 40 40 40 40 40 40 40 40
72,000 2" 40 40 40 40 36 32 28 24
72,000 3" 40 40 40 40 40 40 40 40
6001'-7000' 90,000 3" 40 40 40 40 40 40 40 40 See Note 2
below. 108,000 3" 40 40 40 40 40 40 40 40
126,000 3" 40 40 40 40 35 30 25 20
54,000 2" 40 40 40 40 40 40 40 40
72,000 2" 40 40 40 37 35 32 28 24
72,000 3" 40 40 40 40 40 40 40 40
7001'-8000' 90,000 3" 40 40 40 40 40 40 40 40 See Note 2
below. 108,000 3" 40 40 40 40 40 40 40 40
126,000 3" 40 40 40 40 35 30 25 20
54,000 2" 40 40 40 40 40 40 40 40
72,000 2" 40 40 37 34 31 28 24 21
72,000 3" 40 40 40 40 40 40 40 40
8001'-9000' 90,000 3" 40 40 40 40 40 40 40 40 See Note 2
below. 108,000 3" 40 40 40 40 40 40 40 40
126,000 3" 40 40 40 35 30 25 20 15
54,000 2" 40 40 40 40 40 40 40 40
72,000 2" 40 37 35 31 27 24 21 18
72,000 3" 40 40 40 40 40 40 40 40
9001'-10000' 90,000 3" 40 40 40 40 40 40 40 40 See Note 2
below. 108,000 3" 40 40 40 40 40 40 40 40
126,000 3" 40 35 30 25 20 15 - -
NOTE 1: The table assumes the use of sweep elbows. If using hard 90
?
elbows, the vent length should be decreased
anadditional 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.