Installation guide

Required Subcooting oF (oC)
Outdoor Ambient Temperature Required Subcooling (°F)
Model Size
75 (24) 82 (28) 85 (29) 95 (35) 105 (41) Pr_sur_
(p_ 5 10 15 20 25
024 10.3(5.7) 9.8(5.4) 9.4 (5.2) 9(5) 8.6 (4.7) 189 61 56 51 46 41
030 9.3(5.2) 8.8(4.9) 8.6 (4.8) 7.8(4.3) 7(3.9) 196 63 58 53 48 43
036 17.6(9.8) 16.8(9.3) 16.5(9.2) 15.4(8.6) 14.3(7.9) 203 66 61 56 51 46
042 12.8(7.1) 12.7(7.1) 12.7(7.1) 12.6(7) 12.6(7) 210 68 63 58 53 48
048 17.5(9.7) 16.9(9.4) 16.6(9.2) 15,7(8.7) 14.8(8,2) 217 70 65 60 55 50
060 13.7(7.6) 13(7,2) 13(7.2) 14,5(8.1) 11.5(6,4) 224 72 67 62 57 52
Charqinq Procedure 23t 74 59 64 59 54
238 76 71 66 61 56
245 77 72 67 62 57
1- Measure Discharge line pressure by attaching a gauge to the service port.
252 79 74 69 64 59
2- Measure the Liquid line temperature by attaching a temperature sensing 260 81 76 71 66 61
device to it. 268 83 78 73 68 63
3- Insulate the temperature sensing device 8o that the Outdoor Ambient 276 85 80 75 70 65
doesn'_affect the reading. 284 87 82 77 72 67
4- Refer to the required Subcooling in the table based on the model size and 292 89 84 79 74 69
the Outdoor Ambient temperature. 300 91 86 8t 76 71
5- Interpolate if the Outdoor ambient temperature lie8 in between the table 309 93 88 83 78 73
values. Extrapolate if the temperature lie8 beyond the table range. 318 95 90 85 80 75
6- Find the Pressure Value in the table corresponding to the the measured 327 97 92 87 82 77
Pressure of the Compre88or Discharge line.
7- Read acro88 from the Pressure reading to obtain the Liquid line
temperature for a required Subcooling
8- Add Charge if the measured temperature i8 higher than the table value,
50xz500174 ]
Required Liquid Line Temperature for a Specific Subcooling (R-410A)
Required Subcooling (°C)
336 99 94 89 84 79
345 101 96 91 86 81
354 103 98 93 88 83
364 105 100 95 90 85
374 107 102 97 92 87
384 108 103 98 93 88
394 110 105 100 95 90
404 112 107 102 97 92
414 114 109 104 99 94
424 116 111 106 101 96
434 118 113 108 103 98
444 119 114 109 104 99
454 121 116 111 106 101
464 123 118 113 108 103
474 124 119 114 109 104
484 126 121 116 111 106
494 127 122 117 112 107
504 129 124 119 114 109
514 131 126 121 116 111
524 132 127 122 117 112
534 134 129 124 119 114
Pr_ssur_
(kPa) 3 6 8 11 14
1303 16 13 11 8 5
1351 17 15 12 9 6
1399 19 16 13 10 8
1448 20 17 14 11 9
1496 21 18 15 13 10
1544 22 19 16 14 11
1593 23 20 18 15 12
1641 24 21 19 16 13
1689 25 22 20 17 14
1737 26 23 21 18 15
1792 27 25 22 19 16
1848 29 26 23 20 17
1903 30 27 24 21 19
1958 31 28 25 22 20
2013 32 29 26 23 21
2068 33 30 27 24 22
2130 34 31 28 26 23
2192 35 32 29 27 24
2254 36 33 31 28 25
2316 37 34 32 29 26
2378 38 35 33 30 27
2440 39 36 34 31 28
2509 40 38 35 32 29
2578 41 39 36 33 30
2647 42 40 37 34 31
2716 44 41 38 35 32
2785 45 42 39 36 33
2854 46 43 40 37 34
2923 47 44 41 38 35
2992 48 45 42 39 36
3061 48 46 43 40 37
3130 49 47 44 41 38
3199 50 48 45 42 39
3268 51 48 46 43 40
3337 52 49 47 44 41
3406 53 50 47 45 42
3475 54 51 48 46 43
3544 55 52 49 46 44
3612 56 53 50 47 45
3681 56 54 51 48 45
Fig. 26 - Cooling Charging Table-Subcooling
C03008
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