Performance data (cont)
ALTITUDE COOLING CORRECTION FACTORS
ELEVATION
TOTAL HEAT
SENSIBLE HEAT
1000
0.99
0.96
2000
0.98
0.93
3000
0.97
0.89
4000
0.96
0.86
5000
0.94
0.83
6000
0.93
0.80
DIRECT EXPANSION (DX) CORRECTION FACTORS
% OF
NOMINAL CFM
CORRECTION FACTOR
Total
Sensible
80
0.95
0.93
90
0.97
0.96
100
1.00
1.00
110
1.02
1.04
120
1.05
1.08
Consult factory for values outside of table.
DX Total Capacity (MBtuh) = Base TH x Total Correction Factor
DX Sensible Capacity (MBtuh) = Base SH x Sensible Correction
Factor
% of Nominal Cfm = Actual Cfm (from Fan Performance table)
÷ Nominal Cfm
42BH HOT WATER CAPACITY CORRECTION FACTORS
ENTERING AIR
TEMPERATURE (F)
ENTERING WATER TEMPERATURE (F)
100
110
120
130
140
150
160
170
180
190
200
50
0.455
0.545
0.636
0.727
0.818
0.909
1.000
1.091
1.182
1.273
1.364
55
0.409
0.500
0.591
0.682
0.773
0.864
0.955
1.045
1.136
1.227
1.318
60
0.363
0.455
0.545
0.636
0.727
0.818
0.909
1.000
1.091
1.182
1.273
65
0.318
0.409
0.500
0.591
0.682
0.773
0.864
0.955
1.045
1.136
1.227
70
0.272
0.363
0.455
0.545
0.636
0.727
0.818
0.909
1.000
1.091
1.182
75
0.227
0.318
0.409
0.500
0.591
0.682
0.773
0.864
0.955
1.045
1.136
80
0.182
0.272
0.363
0.455
0.545
0.636
0.727
0.818
0.909
1.000
1.091
NOTES:
1. Leaving air temperature not to exceed 104 F with standard motor.
2. Base capacity ratings based on 180 F entering water temperature
and 70 F entering air temperature.
NOTE: Hot Water Heating Capacity (MBtuh) = Rated Heating Capacity
x Hot Water Capacity Correction Factor x SH (SH value found in Cool-
ing Capacity Correction Factors table on page 7).
8
Summary of Contents for 42BH Series
Page 10: ...Performance data cont COOLING CAPACITY 42BH08 4 ROW 800 CFM 6 ROW 800 CFM 10...
Page 11: ...COOLING CAPACITY 42BH12 4 ROW 1200 CFM 6 ROW 1200 CFM 11...
Page 12: ...Performance data cont COOLING CAPACITY 42BH16 4 ROW 1600 CFM 6 ROW 1600 CFM 12...
Page 14: ...Performance data cont COOLING CAPACITY 42BH30 4 ROW 3000 CFM 6 ROW 3000 CFM 14...
Page 15: ...COOLING CAPACITY 42BH40 4 ROW 4000 CFM 6 ROW 4000 CFM 15...
Page 18: ...Performance data cont 42BH WATER PRESSURE DROP 18...
Page 19: ...42BH WATER PRESSURE DROP cont 19...
Page 20: ...Performance data cont 42BH WATER PRESSURE DROP cont 20...