Evacuation and dehydration of unit
Figure 14: Evacuation of chiller
Table 2: System pressures
1
Gauge
Absolute
Inches of
mercury (Hg)
below one
standars
atmosphere
psia
Millimeters of
mercury (Hg)
Microns
Boiling
temperatures
of water °F
0
14.696
760.00
760,000
212
10.2400 in.
9.629
500.00
500,000
192
22.0500 in.
3.865
200.00
200,000
151
25.9800 in.
1.935
100.00
100,000
124
27.9500 in.
.968
50.00
50,000
101
28.9400 in.
.481
25.00
25,000
78
29.5300 in.
.192
10.00
10,000
52
29.6700 in.
.122
6.30
6,300
40
29.7200 in.
.099
5.00
5,000
35
29.8420 in.
.039
2.00
2,000
15
29.8820 in.
.019
1.00
1,000
+1
29.901 in.
.010
.50
500
−11
29.917 in.
.002
.10
100
−38
29.919 in.
.001
.05
50
−50
29.9206 in.
.0002
.01
10
−70
29.921 in.
1
One standard atmosphere = 14.696 PSIA = 760 mm Hg. absolute pressure at 32°F = 29.921 inches Hg. absolute at 32°F
Note:
psia = lbs. per sq. in. gauge pressure = Pressure above atmosphere
psia = lbs. per sq. in. absolute pressure = Sum of gauge plus atmospheric pressure
Model YK Style G R-134a or R-513A
32
