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A/C System Pressure - Zone Classification with Aux A/C

Fig 1: A/C System Pressure - Zone Classification With Aux A/C
GM1747476Courtesy of GENERAL MOTORS CORP.
A/C Performance Table with Aux A/C

Ambient Air Temperature Relative Humidity Service Port Pressure Maximum Discharge Air Temperature
Low Side High Side Left Front Center Left Rear
13-18°C (55-65°F) 0-100% 151-220 kPa (22-32 psi) 537-937 kPa (78-136 psi) 5°C (41°F) 7°C (45°F)
19-24°C (66-75°F) Below 40% 151-248 kPa (22-36 psi) 689-1109 kPa (100-161 psi) 8°C (46°F) 10°C (50°F)
Above 40% 151-282 kPa (22-41 psi) 757-1178 kPa (110-171 psi) 10°C (50°F) 12°C (54°F)
25-29°C (76-85°F) Below 35% 186-289 kPa (27-42 psi) 978-1322 kPa (142-192 psi) 11°C (52°F) 13°C (55°F)
35-50% 206-303 kPa (30-44 psi) 1019-1336 kPa (148-194 psi) 12°C 54°F) 14°C (57°F)
Above 50% 213-323 kPa (31-47 psi) 1040-1378 kPa (151-200 psi) 14°C (57°F) 16°C (61°F)
30-35°C (86-95°F) Below 30% 234-337 kPa (34-49 psi) 1212-1577 kPa (176-229 psi) 15°C (59°F) 18°C (64°F)
30-50% 248-351 kPa (36-51 psi) 1233-1598 kPa (179-232 psi) 17°C (63°F) 19°C (66°F)
Above 50% 261-372 kPa (38-54 psi) 1260-1619 kPa (183-235 psi) 19°C (66°F) 21°C (70°F)
36-41°C (96-105°F) Below 20% 289-385 kPa (42-56 psi) 1488-1853 kPa (216-269 psi) 19°C (66°F) 21°C (70°F)
20-40% 296-399 kPa (43-58 psi) 1488-1853 kPa (216-269 psi) 21°C (70°F) 23°C (73°F)
Above 40% 310-413 kPa (45-60 psi) 1508-1853 kPa (219-269 psi) 22°C (72°F) 24°C (75°F)
42-46°C (106-115°F) Below 20% 344-434 kPa (50-63 psi) 1770-2080 kPa (257-302 psi) 23°C (73°F) 25°C (77°F)
Above 20% 351-447 kPa (51-65 psi) 1770-2067 kPa (257-300 psi) 24°C (75°F) 27°C (81°F)
47-49°C (116-120°F) Below 30% 392-482 kPa (57-70 psi) 1998-2301 kPa (290-334 psi) 27°C (81°F) 28°C (82°F)