Carrier 50ZH Product Data page 11

50ZH048 (4 TONS)
Temp (F)
Air Ent
Outdoor
Coil
(edb) 72 67
TC 57.4 52.5
85 SHC 27.1 34.7
kW 3.63 3.60
TC 55.1 50.0
95 SHC 26.4 33.7
kW 4.06 4.02
TC 52.8 47.4
105 SHC 25.6 32.8
kW 4.49 4.44
TC 42.0 38.0
115 SHC 37.7 31.1
kW 4.61 5.79
50ZH060 (5 TONS)
Temp (F)
Air Ent
Outdoor
Coil
(edb)
72 67
TC 65.7 59.9
85 SHC 33.7 43.4
kW 5.55 5.45
TC 63.1 55.0
95 SHC 32.9 41.9
kW 5.94 5.85
TC 60.2 53.6
105 SHC 31.9 40.8
kW 6.37 6.28
TC 57.3 51.2
115 SHC 30.9 40.1
kW 6.80 6.71
LEGEND
BF — Bypass Factor
Edb — Entering Dry-Bulb
Ewb — Entering Wet-Bulb
kW — Total Unit Power Input
Ldb — Leaving Dry-Bulb
Lwb — Leaving Wet-Bulb
SHC — Sensible Heat Capacity (1000 Btuh) Net
TC — Total Capacity (1000 Btuh) Net
*At 75 F entering dry bulb (Tennessee Valley Authority [TVA] rating
conditions); all others at 80 F entering dry bulb.
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
sensible capacity (Btuh)
t ldb = t edb –
1.10 x cfm
COOLING CAPACITIES (cont)
Indoor Entering Air — CFM/BF
1400/0.08
Indoor Entering Air — Ewb (F)
63* 62 72
43.8 41.2 57.7
31.7 40.1 27.8
4.39 4.26 3.72
41.3 39.3 55.5
30.7 38.6 27.2
4.82 4.75 4.15
38.6 37.4 53.4
29.6 37.0 26.7
5.25 5.24 4.59
36.1 48.4 42.6
28.1 46.4 40.5
5.73 5.81 4.71
Indoor Entering Air — CFM/BF
1800/0.04
Indoor Entering Air — Ewb (F)
63* 62 72
55.5 54.4 66.4
50.8 52.5 35.2
5.35 5.33 5.67
52.8 51.8 64.1
49.6 51.1 34.5
5.74 5.72 6.08
49.9 49.3 61.0
48.3 49.3 33.6
6.18 6.16 6.50
47.1 46.7 58.0
47.0 46.7 32.7
6.61 6.60 6.92
1600/0.08
67 63* 62 72
53.0 44.4 42.6 58.2
36.9 33.7 42.4 29.0
3.70 4.50 4.38 3.84
46.0 41.9 40.6 56.0
36.0 32.8 40.5 28.3
4.12 4.93 4.87 4.26
48.1 39.0 38.6 53.8
35.0 31.6 38.5 27.7
4.54 5.36 5.36 4.68
38.3 36.4 49.4 43.1
33.5 30.5 49.4 42.9
5.89 5.84 5.94 4.81
2000/0.05
67 63* 62 72
60.8 56.5 55.7 67.3
46.5 54.4 55.7 36.8
5.58 5.48 5.47 5.82
58.1 53.7 53.5 64.7
45.4 53.1 53.4 36.3
5.98 5.87 5.88 6.21
54.9 51.2 51.1 61.7
44.3 51.1 51.1 35.3
6.40 6.32 6.33 6.64
51.8 48.7 48.7 58.6
43.1 48.7 48.7 34.3
6.83 6.77 6.78 7.07
t lwb = Wet-bulb temperature corresponding to enthalpy of air
leaving indoor coil (h lwb )
h lwb = h ewb –
Where: h ewb = Enthalpy of air entering evaporator coil
3. The SHC is based on 80 F edb temperature of air entering evapo-
rator coil.
Below 80 F edb, subtract (corr factor x cfm) from SHC.
Above 80 F edb, add (corr factor x cfm) to SHC.
Correction Factor = 1.10 x (1 – BF) x (edb – 80).
1800/0.09
67 63* 62
53.7 45.0 44.5
38.6 35.7 44.5
3.78 4.59 4.51
51.2 42.3 42.2
37.8 34.7 42.2
4.21 5.03 4.99
48.7 39.5 39.8
37.0 33.5 39.8
4.63 5.47 5.48
38.7 36.7 50.9
35.7 32.5 50.9
6.00 5.94 6.08
2250/0.06
67 63* 62
61.7 57.4 57.4
49.4 57.3 57.4
5.71 5.61 5.62
58.8 55.3 55.0
48.3 55.2 55.0
6.09 6.02 6.03
55.7 52.7 52.6
47.2 52.7 52.6
6.52 6.47 6.48
52.6 50.1 50.2
46.1 50.1 50.1
6.95 6.92 6.93
total capacity (Btuh)
4.5 x cfm
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