York YR TB TB T0 - TABLE 9 - System Pressures

JOHNSON CONTROLS
30
FORM 160.81-NOM1
ISSUE DATE: 10/3/2020
SECTION 1 – INSTALLATION
TABLE 9 - SYSTEM PRESSURES
*GAUGE ABSOLUTE
BOILING
TEMPERATURES
OF WATER °F (°C)
INCHES OF MERCURY
(HG) BELOW ONE
STANDARD
ATMOSPHERE
PSIA
MILLIMETERS
OF MERCURY
(HG)
MICRONS
0 14.696 760 760,000 212 (100)
10.24* 9.629 500 500,000 192 (89)
22.05* 3.865 200 200,000 151 (66)
25.98* 1.935 100 100,000 124 (51)
27.95* .968 050 050,000 101 (38)
28.94* .481 025 025,000 078 (25)
29.53* .192 010 010,000 052 (11)
29.67* .122 000 6.3 06,300 040 (4)
29.72* .099 005 05,000 035 (2)
29.842* .039 002 02,000 015 (-9)
29.882* .019 00 1.0 01,000 0+1 (-17)
29.901* .010 00 .5 000500 0-11 (-24)
29.917* .002 00 .1 000100 0-38 (-39)
29.919* .001 00 .05 000050 0-50 (-46)
29.9206* .0002 00 .01 000010 0-70 (-57)
29.921* 0 000 000000
* One standard atmosphere = 14.696 Psia NOTES: PSIG = Lbs. per sq. in. gauge pressure
= 760 mm Hg. absolute pressure at 32°F = Pressure above atmospheric
= 29.921 inches Hg. absolute at 32°F PSIA = Lbs. per sq. in. absolute pressure
= Sum of gauge plus atmospheric pressure
WATER
FREEZES