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Performance
Data
(12½ - 20 Tons)
Table PD-21— Air Temperature Rise Across Electric Heaters (Degree F)
12½ Ton 15 Ton 20 Ton
5000 CFM 6000 CFM 8000 CFM
Three Phase Three Phase Three Phase
KW Stages WC
*150B WC*180B WC*240B
9.00 1 — — —
17.30 1 — — —
18.00 1 11.4 9.5 —
27.00 2 — — —
36.00 2 23.0 19.0 14.2
54.00 2 34.1 28.4 21.3
72.00 2 — — 28.5
Table PD-22 — Electric Heater Temperature Rise Correction Factors
% Variation From Nominal CFM - 20 - 15 - 10 - 5 0 +5 +10 +15 +20
Temperature Rise Multiplier 1.25 1.17 1.11 1.05 1.00 0.95 0.91 0.87 0.83