Carrier 50TFQ008-012 Product Data page 17
Single-package standard efficiency rooftop heat pump units 50 hz
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Also See for 50TFQ008-012:
- Installation, start-up and service instructions manual (56 pages) ,
- Product data (77 pages)
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50TFQ012
Temp (F)
Outdoor
Entering Air
(Edb)
TC
110.4
75
SHC
52.0
kW
6.78
TC
106.6
50.6
85
SHC
kW
7.50
TC
103.4
95
SHC
49.6
kW
8.36
99.0
TC
105
SHC
48.0
kW
9.20
TC
94.6
115
SHC
46.4
10.14
kW
TC
89.8
125
SHC
44.8
kW
11.18
LEGEND
BF
— Bypass Factor
Edb — Entering Dry-Bulb
Ewb — Entering Wet-Bulb Temperature (F)
kW — Compressor Input (kW)
SHC — Sensible Heat Capacity (kW)
— Total Capacity (1000 Btuh)
TC
NOTES:
1. Ratings are gross, and do not account for the effects of the indoor-
fan motor power and heat.
2. Direct interpolation is permissible. Do not extrapolate.
3. SHC is based on 80 F db temperature of air entering the unit. At any
other temperature, correct the SHC read from the table of cooling
capacities as follows:
Corrected SHC
Btuh
= SHC + [1.10 x (1 – BF) x (F
Observe the rule of signs. Above 80 F, SHC correction will be posi-
tive; add it to SHC. Below 80 F, SHC correction will be negative; sub-
tract it from SHC.
COOLING CAPACITIES (ENGLISH) (cont)
2350/0.09
72
67
62
72
102.4
94.0
114.6
64.8
77.6
56.2
6.60
6.40
6.88
98.6
90.4
112.0
63.2
75.8
55.8
7.30
7.10
7.66
95.0
86.6
108.0
62.0
74.2
54.8
8.12
7.88
8.48
91.0
82.4
103.8
60.6
72.4
53.6
9.00
8.70
9.40
86.4
78.8
99.0
59.0
70.4
52.0
9.92
9.58
10.32
81.2
73.2
93.4
57.0
68.0
50.0
10.88
10.52
11.30
– 80) x cfm]
db
Indoor Air — Cfm/BF
3100/0.14
3400/0.16
Indoor Air — Ewb (F)
67
62
72
107.6
99.0
115.4
73.2
89.2
57.4
6.72
6.52
6.92
104.0
95.4
113.2
72.4
88.2
57.4
7.48
7.26
7.70
99.6
91.2
109.0
70.8
85.8
56.2
8.24
8.04
8.50
95.2
87.2
104.6
69.0
83.8
55.0
9.08
8.88
9.40
90.6
83.0
100.0
68.2
80.8
53.8
10.08
9.78
10.36
85.2
78.6
94.4
66.2
77.0
52.0
11.04
10.78
11.34
4. Formulas:
SHC
C
= C
–
ldb
edb
1.10 x cfm
Leaving wet bulb = wet bulb temperature corresponding to enthalpy
TC
h
= h
–
lwb
ewb
4.50 x cfm
Where h
is enthalpy of air entering indoor coil (Btu/lb).
ewb
3900/0.20
67
62
72
109.0
100.4
116.8
76.0
92.4
59.6
6.76
6.56
6.94
105.2
96.8
114.6
75.2
91.2
60.0
7.50
7.30
7.74
100.8
92.8
110.4
73.8
88.8
58.8
8.28
8.08
8.56
96.2
89.0
105.2
72.0
86.4
56.8
9.12
8.94
9.38
91.6
84.8
101.8
71.0
83.2
57.0
10.10
9.86
10.44
86.0
80.6
96.0
69.2
79.0
55.2
11.08
10.86
11.42
Btuh
of air leaving coil (h
).
lwb
Btuh
67
62
111.0
102.4
80.8
98.0
6.82
6.62
107.2
99.0
80.2
96.0
7.56
7.34
102.8
95.4
79.2
93.2
8.36
8.12
98.0
92.2
77.4
90.2
9.20
9.06
93.0
88.2
75.6
86.4
10.12
10.02
87.4
83.6
74.4
82.2
11.14
11.02
17
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