19
COMBINATION RATINGS
GROSS CAPACITIES — COOLING
LEGEND
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. SHC is based on 80 F db air entering indoor coil.
Below 80 F db, subtract (Corr Factor x Cfm) from SHC.
Above 80 F db, add (Corr Factor x Cfm) to SHC
.
Interpolation is permissible.
Correction Factor = 1.10 x (1 – BF) x (db – 80)
3. Formulas:
where h
ewb
= enthalpy of air entering indoor coil
4. Capacities are based on 25 actual ft (40 equivalent ft) of interconnecting
piping sized to the outdoor unit field connections. (Equivalent length is
equal to the actual length plus a 50% allowance for fitting losses.) For
other equivalent lengths, refer to the Carrier System Design Manual,
Part 3, for line losses.
38AQS008 WITH 40RMQ008
Temp (F)
Air Ent
Outdoor
Unit (edb)
Airflow Air Entering Indoor Unit — Cfm/BF
2250/0.09
3000/0.12
3750/0.14
Temp Air Entering Indoor Unit — Ewb (F)
72
67
62
72
67
62
72
67
62
85
TC
96.9
89.1
81.9 101.0 93.3
86.7 104.0 95.9
90.9
SHC
48.7
60.5
72.2
53.8 69.0
82.9
58.5 76.6
90.2
kW
6.44
6.24
6.06
6.54
6.34
6.18
6.60
6.41
6.27
95
TC
92.6
85.1
78.2
96.4
89.0
82.8
98.8
91.5
86.8
SHC
47.1
58.9
70.3
52.2
67.4
80.6
56.8
75.0
86.8
kW
7.03
6.80
6.58
7.14
6.93
6.73
7.21
7.00
6.86
100
TC
90.3
83.1
76.3
94.0
86.8
80.9
96.3
89.2
84.9
SHC
46.2
58.0
69.4
51.3
66.5
79.4
55.9
74.0
84.9
kW
7.32
7.07
6.84
7.44
7.21
7.00
7.51
7.29
7.14
105
TC
88.0
81.0
74.3
91.6
84.5
78.8
93.7
86.8
82.8
SHC
45.3
57.2
68.4
50.5
65.6
78.0
55.1
73.1
82.8
kW
7.60
7.34
7.08
7.74
7.48
7.26
7.81
7.57
7.41
115
TC
83.3
76.5
70.4
86.4
79.7
74.9
88.4
81.9
79.0
SHC
43.6
55.4
66.4
48.7
63.7
74.9
53.3
71.1
79.0
kW
8.17
7.86
7.58
8.30
8.01
7.79
8.39
8.11
7.98
125
TC
78.3
71.8
66.3
81.1
74.7
71.0
83.0
76.8
74.7
SHC
41.8
53.5
64.1
46.9
61.8
71.0
51.5
68.9
74.7
kW
8.71
8.36
8.05
8.86
8.52
8.32
8.95
8.63
8.51
38AQS012 WITH 40RMQ012
Temp (F)
Air Ent
Outdoor
Unit (edb)
Airflow Air Entering Indoor Unit — Cfm/BF
3000/0.09
4000/0.12
5000/0.14
Temp Air Entering Indoor Unit — Ewb (F)
72
67
62
72
67
62
72
67
62
85
TC
123.0 114.0 104.0 129.0 119.0 111.0 132.0 122.0 115.0
SHC
62.5
78.3
93.3
69.2
89.2 107.0
75.2
99.3 115.0
kW
8.81
8.50
8.19
8.95
8.65
8.38
9.05
8.76
8.54
95
TC
118.0 108.0 99.5 123.0 113.0 105.0 125.0 116.0 111.0
SHC
60.4
76.0 90.9
67.1
87.0 104.0
73.0
96.8 111.0
kW
9.53
9.17
8.83
9.70
9.34
9.07
9.79
9.45
9.28
100
TC
115.0 106.0 97.0 119.0 110.0 103.0 122.0 113.0 108.0
SHC
59.4
74.9 89.6
66.0
85.8 102.0
72.0
95.6 108.0
kW
9.88
9.50
9.16
10.0
9.70
9.42
10.2
9.85
9.63
105
TC
112.0 103.0 94.4 116.0 107.0 100.0 119.0 110.0 106.0
SHC
58.3
73.8 88.3
64.9
84.7 100.0
70.9
94.4 106.0
kW
10.3
9.85
9.49
10.4
10.1
9.74
10.5
10.2
9.97
115
TC
106.0 96.9
89.2 110.0 101.0 95.3 112.0 104.0 100.0
SHC
56.1 71.5
85.5
62.7
82.3 95.3
68.7
91.8 100.0
kW
10.9
10.5
10.1
11.1
10.7
10.4
11.3
10.9
10.7
125
TC
99.4
90.9
83.9 103.0 94.6
90.3 105.0 97.2
94.9
SHC
53.8
69.2
82.4
60.5 79.9
90.3
66.5 89.0
94.9
kW
11.6
11.1
10.7
11.9
11.3
11.1
12.0
11.5
11.4
38AQS016 WITH 40RMQ016
Temp (F)
Air Ent
Outdoor
Unit (edb)
Airflow Air Entering Indoor Unit — Cfm/BF
4500/0.06
6000/0.09
7500/0.11
Temp Air Entering Indoor Unit — Ewb (F)
72
67
62
72
67
62
72
67
62
85
TC
196.0 181.0 168.0 202.0 189.0 177.0 207.0 194.0 184.0
SHC
99.1 125.0 149.0 109.0 142.0 171.0 119.0 159.0 184.0
kW
15.5
14.9
14.3
15.8
15.2
14.7
16.0
15.4
15.0
95
TC
186.0 172.0 160.0 193.0 179.0 169.0 197.0 184.0 177.0
SHC
95.7 121.0 146.0 106.0 139.0 167.0 116.0 155.0 177.0
kW
16.7
16.0
15.4
17.0
16.4
15.9
17.2
16.6
16.2
100
TC
182.0 169.0 157.0 188.0 175.0 165.0 192.0 180.0 173.0
SHC
93.9 120.0 144.0 105.0 137.0 164.0 114.0 153.0 173.0
kW
17.3
16.6
16.0
17.6
16.9
16.4
17.8
17.2
16.8
105
TC
178.0 164.0 153.0 184.0 171.0 162.0 187.0 175.0 169.0
SHC
92.5 118.0 142.0 103.0 135.0 161.0 113.0 151.0 169.0
kW
17.9
17.1
16.5
18.2
17.5
17.0
18.4
17.7
17.4
115
TC
168.0 156.0 145.0 174.0 161.0 154.0 177.0 165.0 162.0
SHC
89.1 114.0 138.0
99.7 132.0 154.0 109.0 147.0 162.0
kW
19.0
18.3
17.6
19.4
18.6
18.1
19.6
18.9
18.6
125
TC
159.0 147.0 137.0 164.0 152.0 146.0 167.0 156.0 153.0
SHC
85.8 111.0 133.0
96.3 128.0 146.0 106.0 143.0 153.0
kW
20.2
19.4
18.6
20.6
19.8
19.3
20.8
20.0
19.8
BF
—
Bypass Factor
Edb —
Entering Dry Bulb
Ewb —
Entering Wet Bulb
kW
—
Compressor Motor Power Input, Total
Ldb —
Leaving Dry Bulb
Lwb —
Leaving Wet Bulb
SHC —
Sensible Heat Capacity, Gross (1000 Btuh)
TC
—
Total Capacity, Gross (1000 Btuh)
BYPASS
FACTOR
ENTERING-AIR DRY-BULB TEMP (F)
79
78
77
76
75
under 75
81
82
83
84
85
over 85
Correction Factor
0.03
1.07
2.13
3.20
4.27
5.34
Use formula
given.
0.06
1.03
2.07
3.10
4.14
5.17
0.09
1.00
2.00
3.00
4.00
5.01
0.12
0.97
1.94
2.90
3.87
4.84
0.15
0.94
1.87
2.81
3.74
4.68
tldb = tedb –
sensible heat capacity (Btuh)
1.1 x cfm
tlwb = wet-bulb temperature corresponding to enthalpy of air leaving
indoor coil (hlwb)
hlwb = hewb –
total capacity (Btuh)
4.5 x cfm
