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COOLING CAPACITIES — UNITS WITH PERFECT HUMIDITY™ ADAPTIVE DEHUMIDIFICATION SYSTEM OPTION
581B036 (3 TONS) — SUBCOOLING MODE
Temp (F)
Air Ent
Condenser
(Edb)
TC
75
SHC
kW
TC
85
SHC
kW
TC
95
SHC
kW
TC
105
SHC
kW
TC
115
SHC
kW
TC
125
SHC
kW
581B036 (3 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
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
PERFORMANCE DATA (cont)
900/0.14
72
67
62
41.3
37.3
34.3
17.5
22.4
26.7
2.19
2.14
2.10
38.6
34.4
31.6
15.2
20.1
25.1
2.46
2.40
2.37
35.9
31.4
28.8
13.0
17.9
23.3
2.74
2.68
2.63
33.8
29.7
27.4
10.9
15.8
21.0
3.05
3.00
2.97
31.8
28.0
25.5
9.0
13.7
18.4
3.40
3.36
3.31
28.7
26.3
23.4
6.9
12.2
17.3
3.78
3.73
3.66
75 Dry Bulb
62.5 Wet Bulb
(50% Relative)
900
1200
1500
12.83
15.84
18.20
4.06
5.69
6.98
2.12
2.12
2.12
13.61
16.44
18.67
4.62
6.16
7.37
2.11
2.11
2.11
14.39
17.05
19.14
5.17
6.62
7.77
2.10
2.10
2.10
15.95
18.26
20.08
6.27
7.55
8.56
2.09
2.09
2.09
17.50
19.48
21.02
7.37
8.47
9.35
2.07
2.07
2.07
19.06
20.69
21.07
8.47
9.40
10.13
2.06
2.06
2.06
Air Entering Evaporator — Cfm/BF
1200/0.17
Air Entering Evaporator — Ewb (F)
72
67
43.5
39.2
35.9
19.6
25.5
31.2
2.21
2.16
2.14
41.3
37.5
33.3
17.1
23.2
29.0
2.47
2.43
2.40
39.2
35.9
30.6
14.5
21.1
26.9
2.76
2.74
2.67
36.3
32.2
28.7
12.5
18.9
24.6
3.09
3.04
2.99
33.2
28.7
26.5
10.3
16.8
22.3
3.45
3.38
3.32
29.7
25.5
22.9
7.9
14.5
20.6
3.84
3.77
3.71
Air Entering Evaporator — Ewb (F)
75 Dry Bulb
64 Wet Bulb
(55% Relative)
Air Entering Evaporator — Cfm
900
1200
1500
13.24
16.31
18.73
2.21
3.83
5.12
2.13
2.13
2.13
14.03
16.93
19.20
2.89
4.43
5.65
2.12
2.12
2.12
14.82
17.54
19.68
3.58
5.03
6.18
2.12
2.12
2.12
16.40
18.77
20.63
4.95
6.23
7.24
2.11
2.11
2.11
17.98
20.00
21.58
6.32
7.43
8.30
2.10
2.10
2.10
19.56
21.23
22.54
7.71
8.63
9.36
2.08
2.08
2.08
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).
95
1500/0.20
62
72
67
45.5
41.6
21.5
28.5
2.24
2.19
43.5
38.6
18.9
26.3
2.51
2.45
41.3
35.7
16.1
24.2
2.80
2.75
38.1
32.8
14.0
21.7
3.12
3.07
34.9
30.0
11.9
19.3
3.48
3.41
31.3
27.1
9.2
17.3
3.87
3.79
75 Dry Bulb
65.3 Wet Bulb
(60% Relative)
900
1200
13.58
16.72
.59
2.20
2.14
2.14
14.39
17.34
1.40
2.93
2.14
2.14
15.19
17.96
2.20
3.65
2.13
2.13
16.79
19.21
3.81
5.09
2.12
2.12
18.40
20.45
5.42
6.52
2.12
2.12
20.00
21.70
7.02
7.95
2.11
2.11
sensible capacity (Btuh)
1.10 x cfm
)
lwb
total capacity (Btuh)
4.5 x cfm
62
38.2
35.2
2.16
35.5
32.9
2.42
32.9
30.6
2.71
30.4
28.1
3.03
27.9
25.2
3.37
25.5
22.3
3.75
1500
19.18
3.50
2.14
19.67
4.15
2.14
20.15
4.80
2.13
21.11
6.10
2.12
22.07
7.39
2.12
23.03
8.69
2.11
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