JOHNSON CONTROLS
151
SECTION 7 – MAINTENANCE
FORM 155.30-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
7
LD14221a
SA
TU
RA
TIO
N P
RE
SS
UR
E
m
m
Hg
RE
FR
IG
ER
AN
T
TE
MP
ER
AT
UR
E
F
20
15
10
8
6
4.
2
100
90
80
70
60
50
40
30
995.
5
90
0
80
0
70
0
600
50
0
40
0
300
20
0
15
0
SOLUTION TEMPERATURE
F
70
80
60
50
40
30
40
50
60
70
80
90
100
100
11
0
12
0
13
0
140
15
0
16
0
17
0
18
0
190
20
0
210
220
230
240
25
0
26
0
270
280
29
0
300
31
0
320
330
340
35
0
20
0
19
0
18
0
17
0
16
0
15
0
14
0
13
0
12
0
11
0
10
0
90
80
70
60
50
40
30
22
0
21
0
90
100
110
120
13
0
140
150
16
0
17
0
180
19
0
20
0
21
0
220
CRYSTALLIZATION ARE
A
65
%
60%
55
%
50
%
45
%
40
%
40
%
45
%
50
%
55
%
60
%
65
%
70
%
200
200
21
0
21
0
220
220
23
0
23
0
24
0
24
0
250
250
260
260
270
270
28
0
28
0
29
0
29
0
30
0
30
0
31
0
31
0
32
0
32
0
33
0
33
0
340
340
35
0
35
0
Dühring Diagram / PTX Chart
Absorption Liquid Chillers
Useful Conversion Formulas To
Convert ºC (Centigrade) to ºF (Fahrenheit) or ºF to ºC:
ºC
=
ºF +4
0
1.
8
-
40
ºF = (ºC + 40) x 1.8 - 40
1 atm (atmosphere at sea level) = 14.696 psia = 0 psig = 760 mmHG = 29.92 in Hg
1 mm Hg = 1000 microns = 0.3937 inch Hg = .01934 ps
i
1 in Hg = 25.4 mm Hg = .491 ps
i
1 psi = 2.036 in Hg = 51.7 mm Hg = 2.31 ft
H
2
O
1 ft
H
2
O = .433 ps
i
1 lb = .4536 Kg = 453.6 gm
s
1 liter = .2641 U.S. gal = 1.057 U.S. quarts
1 U.S. gallon = 3.785 liter
s
1 inch = 25.4 mm
1 ton refrigeration (12,000 btu/hr) = 3.52 kW
FIGURE 63 -
DUHRING DIAGRAM / PTX CHART (°F)
