Carrier 38EH - Manual (Page 5)

If unit has higher suction line temperature than
charted temperature, add refrigerant until charted
temperature is reached.
If unit has lower suction line temperature than
charted temperature, bleed refrigerant until charted
temperature is reached. 10. If air temperature entering outdoor coil or pressure
at suction valve changes, charge to new suction line
temperature indicated on chart.
11. This procedure is valid, independent of indoor air
quantity.
NOTE: For service data, refer to separate service manual
for Models 38EH,EN,ES,QH,QN,QS.
Table 4 — Superheat Charging Table
(Superheat Entering Suction Service Valve)
OUTDOOR
TEMP (F) 50 52
INDOOR COIL ENTERING AIR TEMP (F WB)
54 56 58 60 62 64 66 68 70 72 74 76
55 12 14 17 20 23 26 29 32 35 37 40 42 45
60 10 12 15 18 21 24 27 30 33 35 38 40 43
65 10 13 •16 19 21 24 27 30 33 36 38 41
70 10 13 16 19 21 24 27 30 33 36 39
75 12 15 18 21 24 28 31 34 37
80 12 15 18 21 25 28 31 35
85 11 15 19 22 26 30 33
90 13 16 20 24 27 31
95 10 14 18 22 25 29
100 12 15 20 23 27
105 13 17 22 26
110 11 15 20 25
115 14 18 23
Do not attempt to charge system under these conditions or refrigerant slugging
may occur
Tables — Required Suction-Tube Temperature (F)
(Entering Suction Service Valve)
TEMP (F) 61.5 64.2 67.1 70.0 73.0 76.0 79.2 82.4 85.7
0 35 37 39 41 43 45 47 49 51
2 37 39 41 43 45 47 49 51 53
4 39 41 43 45 47 49 51 53 55
6 41 43 45 47 49 51 53 55 57
8 43 45 47 49 51 53 55 57 59
10 45 47 49 51 53 55 57 59 61
12 47 49 51 53 55 57 59 61 63
14 49 51 53 55 57 59 61 63 65
16 51 53 55 57 59 61 63 65 67
18 53 55 57 59 61 63 65 67 69
20 55 57 59 61 63 65 67 69 71
22 57 59 61 63 65 67 69 71 73
24 59 61 63 65 67 69 71 73 75
26 61 63 65 67 69 71 73 75 77
28 63 65 67 69 71 73 75 77 79
30 65 67 69 71 73 75 77 79 81
32 67 69 71 73 75 77 79 81 83
34 69 71 73 75 77 79 81 83 85
36 71 73 75 77 79 81 83 85 87
38 73 75 77 79 81 83 85 87 89
40 75 77 79 81 83 85 87 89 91