TM
9-4120-401-14
T a b l e 5-2. PRESSURE-TEMPERATURE RELATIONSHIP OF SATURATED REFRIGERANT R-22
Pressure
Temperature
Temperature
Pressure
Psig
F
F
Psig
kg/cm 2
C
C
kg/cm2
-12.3
2.315
10
114.2
32.93
66
18.9
8.029
12
-11.1
2.439
118.3
34.68
68
20.0
8.318
14
-10.0
2.593
36.89
16
-8.9
2.739
70
38.96
122.5
21.1
8.612
18
-7.8
41.09
2.889
72
126.8
22.2
8.915
74
131.2
23.3
9.225
20
43.28
76
135.7
-6.6
3.043
24.4
9.541
22
45.23
78
140.3
-5.5
3.180
25.6
9.864
47.85
24
-4.3
3.364
26
50.24
3.532
145.0
-3.4
80
26.7
10.195
28
-2.2
149.8
52.70
3.705
82
27.8
10.522
154.7
84
28.9
10.877
159.8
-1.1
55.23
3.883
11.236
86
30
30.0
4.066
164.9
0
57.83
88
32
31.1
11.594
1.1
4.254
60.51
34
4.448
170.1
2.2
36
63.27
90
32.2
11.960
4.648
38
3.3
66.11
175.4
12.332
92
33.3
94
180.9
34.5
12.719
40
4.4
4.853
69.02
186.5
96
35.6
13.113
42
71.99
192.1
5.062
13.506
98
5.5
36.7
44
75.04
5.276
6.6
78.18
46
7.7
5.497
197.9
100
37.8
13.914
48
5.723
102
8.8
81.40
203.8
38.9
14.329
104
209.9
40.0
14.758
10.0
50
84.70
5.955
106
41.1
216.0
15.187
11.1
88.10
6.257
52
222.3
108
42.2
15.630
12.2
91.5
54
6.433
56
13.3
95.1
6.686
110
228.7
43.3
16.080
14.5
58
98.8
6.947
112
44.4
235.2
16.537
114
45.6
241.9
17.008
15.6
102.5
7.206
60
116
46.7
248.7
17.486
16.7
106.3
7.474
62
118
47.8
255.6
17.971
17.8
110.2
64
7.748
T a b l e 5-3. NORMAL OPERATING PRESSURES
Temperatures
Pressure Range (psig)
75F(24C)
Outdoor Ambient
55F(12.8C)
100F(38C)
125F(51.7C)
90F(32C) Return
60-70 Suction
62-72 Suction
70-80 Suction
80-95 Suction
Air to Unit (Dry Bulb)
205-220 Discharge
225-245 Discharge
305-325 Discharge
400-425 Discharge
80F(27C) Return
60-70 Suction
60-70 Suction
65-75 Suction
70-80 Suction
Air to Unit (Dry Bulb)
185-205 Discharge
215-235 Discharge
290-310 Discharge
385-415 Discharge
