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* Saturated suction leaving evaporator coil.
Sensible Heat Capacity (1000 Btuh)
Gross Cooling Capacity (1000 Btuh)
BF—Bypass Factor
NOTES:
1. Net capacities shown include a deduction for evaporator fan motor heat.
2. Contact manufacturer for cooling capacities at conditions other than
shown in table.
3. Formulas:
Leaving db = entering db —
Leaving wb = wb corresponding to enthalpy of air leaving coil (h
total capacity (Btuh)
h
= h
—
l w b
ewb
4.5 x CFM
where h
= enthalpy of air entering coil.
ewb
4. Direct interpolation is permissible. Do not extrapolate.
CONDITIONS
UNIT
SIZE
CFM
400
600
800
FE4-002
1000
1200
1400
1400
1600
1800
FE4-003
1000
1200
1400
636
400
600
800
FE4-005
1000
1200
1400
1600
600
800
1000
1200
FE4-006
1400
1600
1800
2000
2150
* Estimated sound power levels have been derived using the method described in the 1987 ASHRAE Systems & Applications Handbook, chapter 52, p. 52.7.
CFM — Cubic Ft per Minute
ESP — External Static Pressure
RPM — Revolutions per Minute
sensible heat cap.
1.09 x CFM
)
l w b
PERFORMANCE DATA Continued
ESTIMATED SOUND POWER LEVEL (dBA)*
ESP
63
125
0.25
63.0
59.0
0.25
64.7
60.7
0.25
66.0
62.0
0.25
67.0
63.0
0.25
67.8
63.8
0.25
68.4
64.4
0.25
63.0
59.0
0.25
64.7
60.7
0.25
66.0
62.0
0.25
67.0
63.0
0.25
67.8
63.8
0.25
68.4
64.4
0.25
65.0
61.0
0.25
63.0
59.0
0.25
64.7
60.7
0.25
66.0
62.0
0.25
67.0
63.0
0.25
67.8
63.8
0.25
68.4
64.4
0.25
69.0
65.0
0.25
64.7
60.7
0.25
66.0
62.0
0.25
67.0
63.0
0.25
67.8
63.8
0.25
68.4
64.4
0.25
69.0
65.0
0.25
69.5
65.5
0.25
70.0
66.0
0.25
70.3
66.3
5. SHC is based on 80°F db temperature of air entering coil. Below 80°F
subtract (corr factor x CFM) from SHC.
Above 80°F db, add (corr factor x CFM) to SHC.
SHC CORRECTION FACTOR
ENTERING AIR DRY-BULB TEMP (°F)
79
81
BYPASS
FACTOR
0.10
0.98
1.96
0.20
0.87
1.74
0.30
0.76
1.53
Interpolation is permissible.
Correction Factor = 1.09 x (1 – BF) x (db – 80)
OCTAVE BAND CENTER FREQUENCY
250
500
55.0
52.0
56.7
53.7
58.0
55.0
59.0
56.0
59.8
56.8
60.4
57.4
55.0
52.0
56.7
53.7
58.0
55.0
59.0
56.0
59.8
56.8
60.4
57.4
57.0
54.0
55.0
52.0
56.7
53.7
58.0
55.0
59.0
56.0
59.8
56.8
60.4
57.4
61.0
58.0
56.7
53.7
58.0
55.0
59.0
56.0
59.8
56.8
60.4
57.4
61.0
58.0
61.5
58.5
62.0
59.0
62.3
59.3
—10—
78
77
76
75
82
83
84
85
Correction Factor
2.94
3.92
4.91
2.62
3.49
4.36
2.29
3.05
3.82
1000
2000
4000
50.0
48.0
44.0
51.7
49.7
45.7
53.0
51.0
47.0
54.0
52.0
48.0
54.8
52.8
48.8
55.4
53.4
49.4
50.0
48.0
44.0
51.7
49.7
45.7
53.0
51.0
47.0
54.0
52.0
48.0
54.8
52.8
48.8
55.4
53.4
49.4
52.0
50.0
46.0
50.0
48.0
44.0
51.7
49.7
45.7
53.0
51.0
47.0
54.0
52.0
48.0
54.8
52.8
48.8
55.4
53.4
49.4
56.0
54.0
50.0
51.7
49.7
45.7
53.0
51.0
47.0
54.0
52.0
48.0
54.8
52.8
48.8
55.4
53.4
49.4
56.0
54.0
50.0
56.5
54.5
50.5
57.0
55.0
51.0
57.3
55.3
51.3
Under 75
Over 85
Use formula
shown below
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