Carrier 48N - Manual (Page 15)

Table 9—Air Delivery (Cfm) at Indicated
Temperature Rise and Rated Heating Input
Nominal Size
Heating
Input (Btuh) 25 30 35 40 45 50 55 60 65 70 75 80
48NLT018
48NLT024
48NLT030
40,000 — 987 846 740 658 592 538 493 — — — —
48NHT024
48NMT030 60,000
_ _ _ _
987 888 808 740 683 634 592
48NLT036
48NLT042
60,000
_
1481 1269 1111 987 888 808 740
_ _ _
48NHT030
48NMT036
48NMT042 80,000 — — — — 1316 1185 1077 987 911 846 790 —
48NLT048
48NLT060
80,000 2370 1975 1693 1481 1316 1185 1077
_ _ _ _ _
48NHT036
48NHT042
48NMT048
100,000 — — 2116 1851 1646 1481 1346 1234 1139 — — —
48NMT060 100,000 2469 2116 1851 1646 1481 1346 1234 — — —
48NVT036
48NHT042
48NHT048
120,000 — — — — — 1777 1616 1481 1367 1269 1185 1111
48NHT060 120,000 2962 2539 2222 1975 1777 1616 1481 — — — —
NOTE: Dashed areas of the table do not fall in the approved temperature rise range of the unit.
Table 10—Superheat Charging Table
(Superheat Entering Suction Service Valve)
Outdoor Indoor Coil Entering Air Temp (F WB)
Temp (F) 50 52 54 56 58 60 62 64 66 68 70 72 74 76
55 9 12 14 17 20 23 26 29 32 35 37 40 42 45
60 7 10 12 15 18 21 24 27 30 33 35 38 40 43
65 — 6 10 13 16 19 21 24 27 30 33 36 38 41
70 —
— 7 10 13 16 19 21 24 27 30 33 36 39
75 — — ~ 6 9 12 15 18 21 24 28 31 34 37
80 — — — — 5 8 12 15 18 21 25 28 31 35
85 — _ —
— _ 8 11 15 19 22 26 30 33
90 — — — — — 5 9 13 16 210 24 27 31
95 — _ — — — — 6 10 14 18 22 25 29
100 — — — — — —
— __ 8 12 15 20 23 27
105 — — — — — — — — 5 9 13 17 22 26
110 — — — — — — — — — 6 11 15 20 25
115 — — — — — — — — — — 8 14 18 23
NOTE: Do not attempt to charge system under these conditions or refrigerant slugging may occur.
Table 11—Required Suction-Tube Temperature (F)
(Entering Suction Service Valve)
Superheat Suction Pressure At Service Port (Psig)
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
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