Bryant 574B User Manual page 15

574B048 COOLING PERFORMANCE TABLE
Temp (F)
Outdoor Air
Entering
Condenser
TC
SHC
75
kW
TC
SHC
85
kW
TC
SHC
95
kW
TC
105 SHC
kW
TC
115 SHC
kW
TC
125 SHC
kW
574B060 COOLING PERFORMANCE TABLE
Temp (F)
Outdoor Air
Entering
Condenser
TC
75 SHC
kW
TC
85 SHC
kW
TC
95 SHC
kW
TC
105 SHC
kW
TC
115 SHC
kW
TC
125 SHC
kW
LEGEND
BF — Bypass Factor
Ewb — Entering Wet-Bulb
kW — Total Unit Power Input
SHC — Sensible Heat Capacity (1000 Btuh)
TC — Cooling Capacity (1000 Btuh)
ECM — Electronic Computated Motor
* — TVA Conditions (75°F entering dry bulb)
NOTES:
1. Ratings are net; they account for the effects
of the evaporator-fan motor power and heat.
2. Direct interpolation is permissible. Do not extrapolate.
3. The following formulas may be used:
PERFORMANCE DATA (cont)
STANDARD INDOOR ECM MOTOR
COOLING CAPACITIES (cont)
1260/0.06
62 63* 67
45.0 45.8 49.6 54.7
39.3 32.0 33.4 27.2
3.4 3.4 3.4 3.4
42.8 43.6 47.2 52.1
38.2 30.9 32.3 26.2
3.7 3.7 3.8 3.8
40.6 41.3 44.7 49.4
36.9 29.8 31.2 25.2
4.1 4.1 4.2 4.2
38.2 38.9 42.1 46.4
35.7 28.7 30.1 24.0
4.6 4.6 4.6 4.6
35.7 36.3 39.3 43.3
34.4 27.5 28.9 22.9
5.0 5.0 5.1 5.1
33.4 33.4 36.2 39.4
32.1 26.2 27.6 21.5
5.6 5.6 5.6 5.7
1500/0.004
62 63* 67 72
57.2 58.2 62.4 68.1
49.4 47.9 41.6 33.8
4.1 4.1 4.2 4.2
54.7 55.6 59.7 65.2
48.2 46.7 40.4 32.6
4.5 4.5 4.6 4.7
52.2 53.0 56.9 62.0
47.0 45.4 39.2 31.4
5.0 5.0 5.1 5.2
49.4 50.2 53.8 58.7
45.7 44.1 37.9 30.1
5.5 5.6 5.6 5.7
46.5 47.2 50.5 55.0
44.3 42.7 36.4 28.7
6.1 6.2 6.2 6.3
43.3 43.9 46.7 52.2
42.8 41.2 34.9 27.8
6.7 6.8 6.8 6.8
Evaporator Air—CFM/BF
1400/0.06
Evaporator Air — Ewb (F)
72 62 63* 67
46.7 47.3 51.2
42.6 34.3 35.8
3.4 3.4 3.4
44.3 44.9 48.6
41.3 33.2 34.7
3.7 3.7 3.8
41.8 42.4 46.0
39.9 32.0 33.6
4.1 4.1 4.2
39.6 39.8 43.1
38.3 30.7 32.3
4.6 4.6 4.6
38.2 37.1 40.1
35.7 29.5 31.0
5.1 5.0 5.1
34.6 34.1 36.9
33.8 28.2 29.7
5.6 5.6 5.6
Evaporator Air — CFM/BF
1750/0.007
Evaporator Air — Ewb (F)
62 63* 67
58.8 59.7 64.0
53.6 51.8 44.5
4.2 4.3 4.3
56.2 57.0 61.1
52.4 50.5 43.2
4.7 4.7 4.8
53.5 54.3 58.0
51.1 49.2 41.9
5.1 5.2 5.3
50.7 51.4 54.8
49.8 47.9 40.6
5.7 5.7 5.8
48.1 48.3 51.3
48.1 46.6 39.2
6.2 6.3 6.4
45.2 45.1 47.4
45.2 45.1 37.6
6.8 6.9 7.0
t = t
ldb edb
t = Wet-bulb temperature corresponding to enthalpy of air leaving
lwb
evaporator coil (h
h = h
lwb ewb
Where: h = Enthalpy of air entering evaporator coil
ewb
4. The SHC is based on 80°F edb temperature of air entering evaporator
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)
—15—
1600/0.08
72 62 63*
56.3 48.1 48.7
28.9 45.8 36.8
3.5 3.4 3.4
53.5 45.6 46.1
27.7 44.3 35.5
3.8 3.8 3.8
50.7 44.2 43.7
26.7 43.0 34.6
4.2 4.2 4.1
47.6 41.5 40.8
25.5 40.0 33.2
4.7 4.6 4.6
44.2 38.7 37.9
24.3 38.2 31.8
5.1 5.1 5.1
40.5 36.1 34.8
22.9 35.6 30.2
5.6 5.6 5.6
2000/0.01
72 62 63*
69.8 60.0 60.8
35.4 57.6 55.4
4.4 4.4 4.4
66.6 57.4 58.1
34.2 56.3 54.2
4.9 4.8 4.9
63.2 55.0 55.3
32.9 55.0 52.9
5.3 5.2 5.3
59.6 52.5 52.4
31.6 52.5 51.6
5.9 5.8 5.8
56.8 49.7 49.7
30.6 49.7 49.7
6.4 6.4 6.4
52.5 46.4 46.4
28.9 46.4 46.4
7.0 7.0 7.0
sensible capacity (Btuh)
1.10 x cfm
)
lwb
total capacity (Btuh)
4.5 x cfm
67 72
52.5 57.8
38.4 30.6
3.4 3.5
49.9 54.8
37.3 29.4
3.8 3.8
47.0 51.8
36.1 28.3
4.2 4.2
44.0 48.5
34.8 27.0
4.6 4.7
40.8 45.0
33.5 25.8
5.1 5.1
37.5 41.2
31.9 24.4
5.6 5.6
67 72
64.9 70.8
47.1 36.8
4.5 4.6
61.9 67.4
45.8 35.6
5.0 5.0
58.7 64.1
44.5 34.4
5.5 5.5
55.4 60.2
43.2 33.0
6.0 6.1
51.8 57.0
41.8 31.7
6.6 6.6
47.9 52.2
40.2 29.7
7.2 7.2