Ecoer 2436 Installation Instructions Manual page 19

ESI Outdoor Unit Installation Instruction
13.3 Sub-cooling charge
Refer to the following step to charge refrigerant by sub-cooling in cooling mode.
STEP1 Calculate superheat value on suction valve.
Measured suction line temperature = ___________º F
Measured suction line pressure = ___________PSIG
Calculate superheat value = ___________º F
STEP2 Calculate sub-cooling value on liquid valve.
Measured liquid line temperature = ____________º F
Measured liquid line pressure = ____________PSIG
Calculate sub-cooling value = ____________º F
Add refrigerant if calculated sub-cooling value is lower
than the designed one. Repeat the steps above.
Figure 13-3 Measure the superheat or sub-cooling
Manufacturer reserves the right to change specifications or designs without notice.
19/31
Table 13-2 Superheat calculation on suction service valve
Suction line
8
TEMP (ºF)
40 101
105
42
110
44
114
46
118
48
123
50
52 128
133
54
138
56
143
58
148
60
62 153
159
64
164
66
170
68
176
70
182
72
Table 13-3 Sub-cooling calculation on liquid service valve
Liquid line
6
TEMP (ºF)
55 173
188
60
204
65
221
70
239
75
80 259
279
85
300
90
322
95
346
100
370
105
110 397
424
115
453
120
483
125
Table 13-4 Designed sub-cooling degree
Model
Designed sub-
cooling degree
www.ecoer.com
Final Superheat (ºF)
10 12 14 16 18
Suction Gage Pressure (PSIG)
97 93 89 86 82
101 97 93 89 86
105 101 97 93 89
110 105 101 97 93
114 110 105 101 97
118 114 110 105 101
123 118 114 110 105
128 123 118 114 110
133 128 123 118 114
138 133 128 123 118
143 138 133 128 123
148 143 138 133 128
153 148 143 138 133
159 153 148 143 138
164 159 153 148 143
170 164 159 153 148
176 170 164 159 153
Final Sub-cooling (ºF)
7 8 9 10 11
Liquid Gage Pressure (PSIG)
176 179 182 185 188
191 195 198 201 204
208 211 215 218 221
225 229 232 236 239
243 247 251 255 259
262 266 270 275 279
283 287 291 295 300
304 309 313 318 322
327 331 336 341 346
351 355 360 365 370
376 381 386 391 397
402 407 413 418 424
430 435 441 447 453
459 465 471 477 483
489 496 502 508 515
2436
10º F(±2º F) 8º F(±2º F)
20 22
78 75
82 78
86 82
89 86
93 89
97 93
101 97
105 101
110 105
114 110
118 114
123 118
128 123
133 128
138 133
143 138
148 143
12 13
191 195
208 211
225 229
243 247
262 266
283 287
304 309
327 331
351 355
376 381
402 407
430 435
459 465
489 496
521 528
4860
08.2018