York YMC2 - FIGURE 47 - Evacuation of Chiller; TABLE 14 - System Pressures

JOHNSON CONTROLS
126
FORM 160.84-OM1
ISSUE DATE: 9/21/2017
SECTION 5 - MAINTENANCE
TABLE 14 - SYSTEM PRESSURES
*GAUGE ABSOLUTE
BOILING
TEMPERATURES
OF WATER °F
INCHES OF MERCURY
(HG) BELOW ONE
STANDARD
ATMOSPHERE
PSIA
MILLIMETERS
OF MERCURY
(HG)
MICRONS
0" 14.6960 760.00 760,000 212
10.240" 9.6290 500.00 500,000 192
22.050" 3.8650 200.00 200,000 151
25.980" 1.9350 100.00 100,000 124
27.950" 0.9680 50.00 50,000 101
28.940" 0.4810 25.00 25,000 78
29.530" 0.1920 10.00 10,000 52
29.670" 0.1220 6.30 6,300 40
29.720" 0.0990 5.00 5,000 35
29.842" 0.0390 2.00 2,000 15
29.882" 0.0190 1.00 1,000 1
29.901" 0.0100 0.50 500 –11
29.917" 0.0020 0.10 100 –38
29.919" 0.0010 0.05 50 –50
29.9206" 0.0002 0.01 10 –70
29.921" 0 0 0
*One standard atmosphere = 14.696 PSIA
= 760 mm Hg. absolute pressure at 32°F
= 29.921 inches Hg. absolute at 32°F
NOTES: PSIG = Lbs. per sq. in. gauge pressure
= Pressure above atmosphere
PSIA = Lbs. per sq. in. absolute pressure
= Sum of gauge plus atmospheric
pressure
Water
Freezes
WET BULB TEMPERATURE
INDICATOR OR VACUUM
GAUGE
STOP VALVE
VACUUM PUMP
CHARGING VALVE
FIGURE 47 - EVACUATION OF CHILLER
LD00949a