38
JOHNSON CONTROLS
FORM 145.05-NOM1 (708)
Borders mark typical operating ranges that can be expected
for suction and discharge pressures under moderate to full
load, 44°F setpoint, with ambient air temperatures between
90-100°F. This is only a guideline and readings beyond these
ranges will occur.
Vapor entering compressor should be superheated 12-15°F.
Liquid from condenser should be subcooled 12-15°F.
This chart shows characteristics of Refrigerant R-22 (Monochlorodifluoromethane) when in the ‘saturated’ state.
Temperature (F) Pressure (PSI
92 173.7
94 179.1
96 184.6
98 190.2
100 195.9
102 201.8
104 207.7
106 213.8
108 220.0
110 226.4
112 232.8
114 239.4
116 246.1
118 252.9
120 259.9
122 267.0
124 274.3
126 281.6
128 289.1
130 296.8
132 304.6
134 321.5
136 320.6
138 328.3
140 337.3
142 345.8
144 354.5
146 363.3
148 372.3
150 381.5
152 390.8
154 400.3
156 410.0
158 419.8
160 429.8
Temperature (F) Pressure (psig)
0 24.0
2 25.6
4 27.3
6 29.1
8 30.9
10 32.8
12 34.7
14 36.7
16 38.7
18 40.9
20 43.0
22 45.3
24 47.6
26 50.0
28 52.4
30 54.9
32 57.5
34 60.1
36 62.8
38 65.6
40 68.5
42 71.5
44 74.5
46 77.6
48 80.8
50 84.0
52 87.4
54 90.2
56 94.3
58 97.9
60 101.6
62 105.4
64 109.3
66 113.2
68 117.3
70 121.4
72 125.7
74 130.0
76 134.5
78 139.0
80 143.6
82 148.4
84 153.2
86 158.2
88 163.2
90 168.4
SUCTION
DISCHARGE
TABLE 11 – TEMPERATURE/PRESSURE CHART – REFRIGERANT R-22
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