Cooling System Performance
For maximum performance of the cooling system, operat- ing temperatures and pressure should be checked. Subcooling should be determined at Standard ARI test conditions of 82°F outdoor and 80°F indoor dry bulb/67°F wet bulb. If subcooling measured deviates from values found in Table 4, refrigerant charge should be adjusted accordingly for maximum performance.
Liquid Subcooling
| Liquid Subcooling | |
Size | @ ARI Conditions | |
82° OD - 80° IDDB/67° IDWB | ||
|
|
|
| R22 | 410A |
|
|
|
24 | 10° | 9° |
|
|
|
30 | 8° | 11° |
36 | 10° | 11° |
|
|
|
42, 48 | 5° | 7° |
60 | 10° | 10° |
|
|
|
Table 4
# 48369K005 | Page 9 |
