Trane YSJ072A Installation, Operation And Maintenance Manual page 46

Installation
Table 9. Temperature vs. resistance
Temperature
Degrees °F Degrees °C
-20 -28.9
-15 -26.1
-10 -23.3
-5 -20.6
0 -17.8
5 -15.0
10 -12.2
15 -9.4
20 -6.7
25 -3.8
30 -1.1
35 1.7
40° 4.4
45° 7.2
50° 10.0
55° 12.8
60° 15.6
65° 18.3
70° 21.1
75° 23.9
80° 26.7
85° 29.4
90° 32.2
95° 35.0
46
Nominal Resistance
(kOhms)
170.1
143.5
121.4
103.0
87.56
74.65
63.80
54.66
46.94
40.40
34.85
30.18
26.22
22.85
19.96
17.47
15.33
13.4
11.89
10.50
9.297
8.247
7.330
6.528
Table 10. Sizing natural gas pipe mains and branches
Iron Pipe Size (IPS) Inches
Length ½" Pipe ¾" Pipe
of Pipe
(Ft.)
15 76 176
30 52 120
45 43 99
60 38 86
75 - 77
Note: Capacity of Pipe of Different Diameters and Lengths in Cu. Meter
Per Hr. with Pressure Drop of 74.6 Pa and Specific Gravity of 0.60.
Table 11. Iron pipe size (SI) millimeters
Iron Pipe Size (SI) Millimeters
Length of 15 mm 20 mm
Pipe Pipe Pipe
(Meters)
4.6 2.15 4.98
9.1 1.47 3.39
13.7 1.21 2.80
18.3 1.07 2.43
22.9 — 2.18
Note: Capacity of Pipe of Different Diameters and Lengths in Cu. Meter Per Hr.
with Pressure Drop of 74.6 Pa and Specific Gravity of 0.60.
Figure 61. Schematic diagram for field gas piping to
Units
1" Pipe 1¼" 1½"
Pipe Pipe
345 750 1220
241 535 850
199 435 700
173 380 610
155 345 545
25 mm 32 mm 40 mm
Pipe Pipe Pipe
9.76 21.23 34.54
6.82 15.14 24.06
5.63 12.31 19.82
4.89 10.76 17.27
4.38 9.76 15.40
RT-SVX071A-EN