Page 20
505331M 06/09
Table 8. Normal Operating Pressure − Liquid +10 and Vapor
+
5 PSIG*
IMPORTANT
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.
5F (5C)**
XP19−024 XP19−036 XP19−048 XP19−060
Liq Vap Liq Vap Liq Vap Liq Vap
First Stage (Low Capacity)
40 (4.4) 314 100 316 99 350 98 365 96
50 (10) 334 120 334 117 367 111 388 112
Second Stage (High Capacity)
20 (−7.0) 304 68 294 64 314 60 346 60
30 (−1.0) 323 82 313 77 331 72 362 72
40 (4.4) 342 98 329 89 358 85 382 85
50 (10) 364 116 344 109 384 107 409 106
First Stage (Low Capacity)
65 (18.3) 226 152 230 148 210 136 234 135
75 (23.9) 262 151 267 150 242 138 274 137
85 (29.4) 304 152 309 153 286 140 314 142
95 (35.0) 351 155 355 155 328 142 361 147
105 (40.6) 400 158 404 157 374 144 413 147
115 (49.0) 454 161 460 159 426 146 470 149
Second Stage (High Capacity)
65 (18.3) 228 146 236 144 227 114 237 131
75 (23.9) 267 148 275 145 265 123 276 133
85 (29.4) 309 149 318 148 306 132 320 135
95 (35.0) 358 151 365 150 348 138 369 138
105 (40.6) 410 152 416 153 397 141 423 140
115 (49.0) 465 154 473 155 453 143 482 144
*These are most−popular−match−up pressures. Indoor match up,
indoor air quality, and indoor load cause pressures to vary.
**Temperature of the air entering the outside coil.
Table 9
. HFC−410A Temperature (°F) − Pressure (Psig)
°F Psig °F Psig °F Psig °F Psig
32 100.8 63 178.5 94 290.8 125 445.9
33 102.9 64 181.6 95 295.1 126 451.8
34 105.0 65 184.3 96 299.4 127 457.6
35 107.1 66 187.7 97 303.8 128 463.5
36 109.2 67 190.9 98 308.2 129 469.5
37 111.4 68 194.1 99 312.7 130 475.6
38 113.6 69 197.3 100 317.2 131 481.6
39 115.8 70 200.6 101 321.8 132 487.8
40 118.0 71 203.9 102 326.4 133 494.0
41 120.3 72 207.2 103 331.0 134 500.2
42 122.6 73 210.6 104 335.7 135 506.5
43 125.0 74 214.0 105 340.5 136 512.9
44 127.3 75 217.4 106 345.3 137 519.3
45 129.7 76 220.9 107 350.1 138 525.8
46 132.2 77 224.4 108 355.0 139 532.4
47 134.6 78 228.0 109 360.0 140 539.0
48 137.1 79 231.6 110 365.0 141 545.6
49 139.6 80 235.3 111 370.0 142 552.3
50 142.2 81 239.0 112 375.1 143 559.1
51 144.8 82 242.7 113 380.2 144 565.9
52 147.4 83 246.5 114 385.4 145 572.8
53 150.1 84 250.3 115 390.7 146 579.8
54 152.8 85 254.1 116 396.0 147 586.8
55 155.5 86 258.0 117 401.3 148 593.8
56 158.2 87 262.0 118 406.7 149 601.0
57 161.0 88 266.0 119 412.2 150 608.1
58 163.9 89 270.0 120 417.7 151 615.4
59 166.7 90 274.1 121 423.2 152 622.7
60 169.6 91 278.2 122 428.8 153 630.1
61 172.6 92 282.3 123 434.5 154 637.5
62 175.4 93 286.5 124 440.2 155 645.0
INSTALLING SERVICE VALVE CAPS
Disconnect gauge set and re−install all service valve caps.
INSTALL CAPS
OUTDOOR UNIT
SERVICE VALVE
Figure 33. Installing Service Valve Port Caps
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