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Table 8
Approach Values for TXV Systems
Approach value is the liquid line temperature
minus the outdoor ambient temperature (±1°F).
NOTE: For best results, use the same digital
thermometer to check both outdoor ambient and
liquid temperatures.
ledoM 81- 42- 03- 63- 24- 84- 06-
.pmeT
F°
789 11787
Table 9
gnilooC
lioCroodtuO
riAgniretnE
F°.pmeT
81- 42- 03- 63- 24- 84- 06-
L S L S L S L S L S L S L S
5614118841086418745187931767418764176
57 361 28 671 28 171 97 081 88 361 47 371 97 071 47
5819148602381020801299191183020899118
59 222 58 042 48 332 18 642 901 022 48 632 18 032 48
5016527877268172187729116525837238
662
58
511 692 98 223 78 313 38 813 031 492 78 513 48 603 78
Normal Operating Pressures
gnitaeH
lioCroodtuO
riAgniretnE
F°.pmeT
81- 42- 03- 63- 24- 84- 06-
L S L S L S L S L S L S L S
0529146581068918569185402952129541206
04 081 35 671 05 881 74 581 74 591 94 591 04 202 05
0327134561945715367173481939819319104
02 461 43 261 13 361 62 071 03 871 23 971 13 181 33
L – Liquid S – Suction
Values provided above are typical pressures. Indoor unit matchup, indoor air quality, and indoor load will cause
pressures to vary.
system is not properly charged or that a problem exists
with some component in the system.