Operation, Steam or hot water preheating operation – AAON SA-070 User Manual
Page 47
47
Table 9 - R-410A Refrigerant Temperature-Pressure Chart
°F
PSIG
°F
PSIG
°F
PSIG
°F
PSIG
°F
PSIG
20
78.3
47
134.7
74
213.7
101
321.0
128
463.2
21
80.0
48
137.2
75
217.1
102
325.6
129
469.3
22
81.8
49
139.7
76
220.6
103
330.2
130
475.4
23
83.6
50
142.2
77
224.1
104
334.9
131
481.6
24
85.4
51
144.8
78
227.7
105
339.6
132
487.8
25
87.2
52
147.4
79
231.3
106
344.4
133
494.1
26
89.1
53
150.1
80
234.9
107
349.3
134
500.5
27
91.0
54
152.8
81
238.6
108
354.2
135
506.9
28
92.9
55
155.5
82
242.3
109
359.1
136
513.4
29
94.9
56
158.2
83
246.0
110
364.1
137
520.0
30
96.8
57
161.0
84
249.8
111
369.1
138
526.6
31
98.8
58
163.8
85
253.7
112
374.2
139
533.3
32
100.9
59
166.7
86
257.5
113
379.4
140
540.1
33
102.9
60
169.6
87
261.4
114
384.6
141
547.0
34
105.0
61
172.5
88
265.4
115
389.9
142
553.9
35
107.1
62
175.4
89
269.4
116
395.2
143
560.9
36
109.2
63
178.4
90
273.5
117
400.5
144
567.9
37
111.4
64
181.5
91
277.6
118
405.9
145
575.1
38
113.6
65
184.5
92
281.7
119
411.4
146
582.3
39
115.8
66
187.6
93
285.9
120
416.9
147
589.6
40
118.1
67
190.7
94
290.1
121
422.5
148
596.9
41
120.3
68
193.9
95
294.4
122
428.2
149
604.4
42
122.7
69
197.1
96
298.7
123
433.9
150
611.9
43
125.0
70
200.4
97
303.0
124
439.6
44
127.4
71
203.6
98
307.5
125
445.4
45
129.8
72
207.0
99
311.9
126
451.3
46
132.2
73
210.3
100
316.4
127
457.3
Operation
Unit operations should be controlled with
thermostat or unit controller, never at the
main power supply, except for emergency or
complete shutdown of the unit.
Steam or Hot Water Preheating
Operation
Valve control for steam and hot water
heating coils are by others. Heating is
accomplished by passing steam or hot water
through the steam or hot water coil
assembly.
Chilled Water or Non-Compressorized
DX Cooling Operation
Controls for chilled water cooling coil and
non-compressorized DX coil are by others.