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506510−01
Operating and Temperature Pressures
Minor variations in these pressures may be expected due to differences in installations. Significant differences could mean
that the system is not properly charged or that a problem exists with some component in the system.
Table 4. Normal Operating Pressures (10 and S5 psig)*
IMPORTANT
Use this table to perform maintenance checks; it is not a procedure for charging the
system. Minor variations in these pressures may be due to differences in installations.
Significant deviations could mean that the system is not properly charged or that a
problem exists with some component in the system.
Model
−024
−030
−036
−042
−048
−060
°
F (
°
C)**
Liquid
Suction
Liquid
Suction
Liquid
Suction
Liquid
Suction
Liquid
Suction
Liquid
Suction
65 (18.3)
234
139
236
134
226
134
232
137
232
132
236
131
70 (21.1)
249
140
251
135
245
135
249
139
249
133
254
132
75 (23.9)
268
141
271
138
266
137
270
140
268
134
273
133
80 (26.7)
289
142
291
139
287
138
291
141
288
135
294
135
85 (29.4)
310
142
312
140
310
139
314
142
311
136
317
136
90 (32.2)
334
144
335
142
333
140
338
143
333
137
340
137
95 (35.0)
358
145
358
142
358
141
363
144
357
138
364
139
100 (37.8)
383
146
383
143
383
143
389
145
380
139
389
140
105 (40.6)
408
147
409
144
410
144
419
147
406
140
416
142
110 (43.3)
436
148
436
145
437
145
447
148
433
142
444
143
115 (46.1)
465
150
467
147
464
146
480
149
462
143
475
145
*
Typical pressures only, expressed in psig (/− 10 and vapor+/− 5 psig); indoor match up, indoor air quality, and indoor load will cause the pressures
to vary. These operating pressures are also listed on the unit charging sticker (580005−01) located on the access panel.
** Temperature of air entering outdoor coil.
Table 5. HFC−410A Temperature (° Fahrenheit) Pressure (Psig)
°F
Psig
°F
Psig
°F
Psig
°F
Psig
°F
Psig
°F
Psig
°F
Psig
°F
Psig
32
100.8
48
137.1
63
178.5
79
231.6
94
290.8
110
365.0
125
445.9
141
545.6
33
102.9
49
139.6
64
181.6
80
235.3
95
295.1
111
370.0
126
451.8
142
552.3
34
105.0
50
142.2
65
184.3
81
239.0
96
299.4
112
375.1
127
457.6
143
559.1
35
107.1
51
144.8
66
187.7
82
242.7
97
303.8
113
380.2
128
463.5
144
565.9
36
109.2
52
147.4
67
190.9
83
246.5
98
308.2
114
385.4
129
469.5
145
572.8
37
111.4
53
150.1
68
194.1
84
250.3
99
312.7
115
390.7
130
475.6
146
579.8
38
113.6
54
152.8
69
197.3
85
254.1
100
317.2
116
396.0
131
481.6
147
586.8
39
115.8
55
155.5
70
200.6
86
258.0
101
321.8
117
401.3
132
487.8
148
593.8
40
118.0
56
158.2
71
203.9
87
262.0
102
326.4
118
406.7
133
494.0
149
601.0
41
120.3
57
161.0
72
207.2
88
266.0
103
331.0
119
412.2
134
500.2
150
608.1
42
122.6
58
163.9
73
210.6
89
270.0
104
335.7
120
417.7
135
506.5
151
615.4
43
125.0
59
166.7
74
214.0
90
274.1
105
340.5
121
423.2
136
512.9
152
622.7
44
127.3
60
169.6
75
217.4
91
278.2
106
345.3
122
428.8
137
519.3
153
630.1
45
129.7
61
172.6
76
220.9
92
282.3
107
350.1
123
434.5
138
525.8
154
637.5
46
132.2
62
175.4
77
224.4
93
286.5
108
355.0
124
440.2
139
532.4
155
645.0
47
134.6
78
228.0
109
360.0
140
539.0
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