Bryant CK3B Specifications page 5

CFM — Cubic Ft per Minute
EWB — Entering Wet Bulb ( F)
LWB — Leaving Wet Bulb ( F)
TC — Total Cooling Capacity 1000 Btuh
SHC — Total Sensible Capacity 1000 Btuh
BF — Bypass Factor
MBH — 1000 Btuh
NOTES:
1. Contact manufacturer for cooling capacities at conditions other than
shown in table.
2. Formulas:
Leaving db = entering db —
Leaving wb = wb corresponding to enthalpy of air leaving coil (h
total capacity (Btuh)
h = h —
LWB EWB
4.5 x CFM
where h = enthalpy of air entering coil.
EWB
UNIT SIZE BULB
A024
WET
DRY
A030
WET
DRY
A036
WET
DRY
A042
WET
DRY
A048
WET
DRY
A060
WET
DRY
sensible heat cap.
1.09 x CFM
COIL STATIC PRESSURE DROP (In. WC)
600 700
0.08 0.10
0.06 0.08
700 800
0.08 0.12
0.08 0.10
900 1000
0.16 0.19
0.13 0.17
1000 1100
0.18 0.21
0.14 0.17
1300 1400
0.19 0.22
0.18 0.21
1600 1700
0.19 0.22
0.18 0.20
3. Direct interpolation is permissible. Do not extrapolate.
4. SHC is based on 80 F db temperature of air entering coil.
Below 80 F db, subtract (Correction Factor x CFM) from SHC.
Above 80 F db, add (Correction Factor x CFM) to SHC.
5. All data points are based on 10 F superheat leaving coil.
6. Bypass Factor = 0 indicates no psychometric solution. Use bypass
factor of next lower EWB for approximation.
ENTERING AIR DRY BULB TEMPERATURE ( F)
79
81
BYPASS
FACTOR
0.10 0.98
0.20 0.87
0.30 0.76
)
LWB
Interpolation is permissible.
Correction Factor = 1.09 x (1 – BF) x (db – 80)
AIR QUANTITY (CFM)
800
0.13
0.11
900
0.15
0.14
1100
0.23
0.21
1200
0.24
0.20
1500
0.25
0.24
1800
0.24
0.21
—5—
78 77 76 75
82 83 84 84
Correction Factor
1.96 2.94 3.92 4.91
1.74 2.62 3.49 4.36
1.53 2.29 3.05 3.82
900 —
0.16 —
0.13 —
1000 1100
0.19 0.23
0.17 0.21
1200 1300
0.27 0.32
0.25 0.29
1300 1400
0.27 0.31
0.23 0.26
1600 1700
0.28 0.31
0.27 0.30
1900 2000
0.26 0.28
0.24 0.26
Under 75
Over 85
Use formula
shown below
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2100
0.30
0.28