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PRODUCT SPECIFICATIONS
Heater Model HKCB20 HKCB30 HKCB40
Number of Stages 2 2 2
Output (MBH) 67.9 135.8 135.8
CFM
2,600 24.2 36.2 -
2,800 22.5 33.6 -
3,000 21.0 31.4 -
3,200 19.7 29.4 39.3
3,400 18.5 27.7 37.0
3,600 17.5 26.2 34.9
3,800 16.5 24.8 33.1
4,000 15.7 23.5 31.4
4,200 15.0 22.4 29.9
4,400 14.3 21.4 28.6
4,600 13.7 20.5 27.3
4,800 13.1 19.6 26.2
5,000 12.6 18.8 25.2
5,200 12.1 18.1 24.2
5,400 11.6 17.4 23.3
5,600 11.2 16.8 22.5
5,800 10.8 16.2 21.7
6,000 10.5 15.7 21.0
ELECTRIC HEAT AIR TEMPERATURE RISE
HEAT KIT AVAILABILITY
Unit Size HKCB20 HKCB30 HKCB40
7½XXX
10XXX
X - Heat Kit Available
N/A - Heater Not Available
Notes
• Maximum air temperature rise of 40° must not be exceeded.
• See table for Electric Heat Kit Availability in various unit sizes.
• Air temperature rise is for total heating capacity. Temperature rises at other conditions may be
calculated by using the formula:
Temperature Rise = Output Capacity - BTU/h
1.08 x ft
3
/min. Airfl ow
• For altitudes over 2,000’, air temperature rise must be calculated using the formula:
Temperature Rise = Output Capacity - BTU/h
14.4 x ft
3
/Min. Airfl ow x Specifi c Weight of Air
• Operation at less than nominal voltages must be derated by the following factors:
460 volt-0.92; 230 volt-0.92; 208 volt-0.75.