Carrier 42BH Series - Page 8

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).
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