Bryant 579F User Manual page 101

COOLING CAPACITIES — UNITS WITH PERFECT HUMIDITY™ ADAPTIVE DEHUMIDIFICATION SYSTEM OPTION (cont)
581B060 (5 TONS) — SUBCOOLING MODE
Temp (F)
Air Ent
Condenser
(Edb)
72
TC 69.9
75
SHC 29.0
kW 3.61
TC 65.9
85
SHC 25.3
kW 4.05
TC 61.9
95
SHC 21.6
kW 4.53
TC 57.7
105
SHC 18.1
kW 5.05
TC 53.4
115
SHC 14.7
kW 5.60
TC 48.7
125
SHC 10.9
kW 6.26
581B060 (5 TONS) — HOT GAS REHEAT MODE*
Temp (F)
Air Ent
Condenser
(Edb)
TC
80 SHC
kW
TC
75 SHC
kW
TC
70 SHC
kW
TC
60 SHC
kW
TC
50 SHC
kW
TC
40 SHC
kW
LEGEND
BF — Bypass Factor
Edb — Entering Dry Bulb
Ewb — Entering Wet Bulb
kW — Compressor Motor Power Input
SHC — Sensible Heat Capacity (1000 Btuh) Gross
TC — Total Capacity (1000 Btuh) Gross
*Negative SHC value indicates that the air entering the coil is being
heated.
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
PERFORMANCE DATA (cont)
1500/0.08
67 62 72
62.7 56.2 74.7
36.9 43.9 31.7
3.55 3.51 3.64
59.1 51.7 70.6
34.0 41.9 27.5
3.97 3.91 4.07
55.2 47.7 66.5
31.1 40.0 23.5
4.43 4.35 4.55
51.1 44.9 61.8
27.8 35.7 20.0
4.93 4.84 5.09
47.2 42.0 56.6
24.6 31.5 16.5
5.49 5.40 5.64
42.0 36.9 51.3
19.6 28.0 12.5
6.12 6.02 6.28
75 Dry Bulb
62.5 Wet Bulb
(50% Relative)
1500 1750 2000
17.67 19.23 20.59
–0.39 0.07 0.46
3.45 3.45 3.45
18.55 20.03 21.32
0.28 0.71 1.09
3.43 3.43 3.43
19.44 20.83 22.06
0.95 1.36 1.71
3.42 3.42 3.42
21.20 22.44 23.53
2.30 2.65 2.95
3.38 3.38 3.38
22.96 24.05 25.00
3.64 3.94 4.20
3.35 3.35 3.35
24.73 25.66 26.48
4.99 5.23 5.45
3.32 3.32 3.32
Air Entering Evaporator — Cfm/BF
1750/0.09 2000/0.11
Air Entering Evaporator — Ewb (F)
67 62 72
67.3 61.0 78.5
40.5 51.2 34.5
3.58 3.49 3.65
63.2 56.3 75.5
37.6 48.0 30.7
4.01 3.92 4.11
58.8 51.3 70.4
34.5 44.6 26.0
4.47 4.37 4.56
54.5 47.7 65.1
31.2 40.1 22.1
4.97 4.88 5.11
50.0 44.2 59.6
27.8 35.7 18.2
5.52 5.45 5.69
45.0 39.0 54.1
22.2 31.5 13.5
6.18 6.09 6.33
Air Entering Evaporator — Ewb (F)
75 Dry Bulb
64 Wet Bulb
(55% Relative)
Air Entering Evaporator — Cfm
1500 1750
17.51 19.09
–1.61 –1.15
3.48 3.48
18.45 19.95
–0.85 –0.42
3.46 3.46
19.39 20.81
–0.09 0.32
3.45 3.45
21.27 22.54
1.44 1.80
3.42 3.42
23.15 24.26
2.97 3.27
3.40 3.40
25.03 25.98
4.50 4.75
3.37 3.37
2. The following formulas may be used:
t = t –
ldb edb
t = Wet-bulb temperature corresponding to enthalpy of air
lwb
leaving evaporator coil (h
h = h
lwb ewb
Where: h = Enthalpy of air entering evaporator coil.
ewb
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).
101
2500/0.13
67 62 72
71.2 64.8 81.7
44.2 55.4 37.8
3.60 3.51 3.62
66.8 60.7 78.1
41.6 52.0 33.8
4.00 3.95 4.08
61.9 55.7 74.2
38.6 47.9 30.0
4.42 4.41 4.58
57.2 50.8 68.4
34.3 43.5 26.1
4.96 4.92 5.11
52.5 46.2 62.6
30.0 39.0 22.1
5.55 5.48 5.69
46.8 40.9 56.9
24.0 34.0 16.5
6.18 6.13 6.33
75 Dry Bulb
65.3 Wet Bulb
(60% Relative)
2000 1500 1750
20.48 17.37 18.98
–0.75 –2.67 –2.21
3.48 3.50 3.50
21.27 18.36 19.89
–0.04 –1.83 –1.39
3.46 3.49 3.49
22.06 19.35 20.80
0.68 –0.99 –0.58
3.45 3.48 3.48
23.65 21.33 22.62
2.11 0.70 1.06
3.42 3.46 3.46
25.23 23.31 24.43
3.53 2.39 2.69
3.40 3.43 3.43
26.81 25.28 26.25
4.96 4.07 4.32
3.37 3.41 3.41
sensible capacity (Btuh)
1.10 x cfm
)
lwb
total capacity (Btuh)
–
4.5 x cfm
67 62
75.5 69.3
52.0 62.8
3.58 3.51
70.8 65.1
47.4 58.0
4.02 3.96
65.9 60.6
42.8 52.6
4.49 4.44
60.3 56.1
38.9 48.5
5.03 4.98
54.9 51.6
34.9 44.3
5.61 5.57
49.2 45.9
28.0 38.8
6.27 6.22
2000
20.39
–1.80
3.50
21.23
–1.01
3.49
22.07
–0.22
3.48
23.75
1.37
3.46
25.42
2.96
3.43
27.10
4.54
3.41