Daikin Rebel DPS003 Installation And Maintenance Manual page 31

DOT-ITB-21-8041-AC
Table 14: Capacity of Pipe Natural Gas (CFH)
Pipe Length (ft .)
½
10 132
20 92
30 73
40 63
50 56
60 50
70 46
80 53
90 40
100 38
125 34
150 31
175 28
200 26
NOTE: Use multiplier below for other gravities and pressure drops.
Table 15: Specific Gravity Other Than 0.60
Specific Gravity
0 .50
0 .60
0 .70
0 .80
0 .90
1 .00
PROPANE-AIR
1 .10
PROPANE
1 .55
BUTANE
2 .00
Table 16: Pressure Drop Other Than 0.3"
Pressure
Multiplier
Drop
0 .1 0 .577
0 .2 0 .815
0 .3 1 .000
0 .4 1 .16
0 .6 1 .42
0 .8 1 .64
Gas Piping Routing Into Unit
On-The-Roof Piping
1 . Remove knockout on upright (refer to
34).
2 . Route gas supply pipe through hole. Carefully plan pipe
route and fitting locations to avoid interference with
swinging of doors, etc.
3 . The Rebel unit does not have an option for gas piping
through the curb.
www.DaikinApplied.com
With Pressure Drop of 0 .3" Wc & Specific Gravity Of 0.60
¾ 1 1¼
278 520 1050
190 350 730
152 285 590
130 245 500
115 215 440
105 195 400
96 180 370
90 170 350
84 160 320
79 150 305
72 130 275
64 120 250
59 110 225
55 100 210
Multiplier
1 .100
1 .000
0 .936
0 .867
0 .816
0 .775
0 .740
0 .622
0 .547
Pressure Multiplier
1 .0 1 .83
2 .0 2 .58
3 .0 3 .16
4 .0 3 .65
6 .0 4 .47
8 .0 5 .15
Figure 33 or Figure
31
Pipe Size-inches (Ips)
1½ 2
1600 2050
1100 2100
890 1650
760 1450
670 1270
610 1150
560 1050
530 990
490 930
460 870
410 780
380 710
350 650
320 610
Figure 33: Small Cabinet Gas Piping
Figure 34: Large Cabinet Gas Piping
FPID: 437300-3-7B-01
o g
pTIonal as
2½ 3 4
4800 8500 17500
3300 5900 12000
2700 4700 9700
2300 4100 8300
2000 3600 7400
1850 3250 6800
1700 3000 6200
1600 2800 5800
1500 2600 5400
1400 2500 5100
1250 2200 4500
1130 2000 4100
1050 1850 3800
980 1700 3500
Field Piping
Field Piping
IM 1125-6 • REBEL ROOFTOPS
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