Technical Guide

5005743-YTG-C-0815
Johnson Controls Unitary Products 9
*Do not exceed minimum/maximum CFM limits shown under Air Flow Data.
APPLICATION LIMITATIONS
These units must be installed in accordance with all national
and local safety codes.
Air flow must be within the minimum and maximum limits
approved for electric heat, evaporator coils and outdoor units.
UNCASED UPFLOW - “N” TYPE COIL
Model Airflow Wet Coil
CU18A
500 0.14
600 0.18
675 0.22
CU18B
525 0.09
600 0.11
675 0.13
CU24A
650 0.20
800 0.29
900 0.37
CU24B
650 0.09
800 0.14
900 0.18
CU24C
650 0.09
800 0.12
900 0.14
CU30A
825 0.26
1000 0.37
1125 0.44
CU30B
825 0.18
1000 0.23
1125 0.28
CU30C
825 0.10
1000 0.14
1125 0.16
CU30D
825 0.08
1000 0.10
1125 0.12
CU36B
975 0.21
1200 0.32
1350 0.41
CU36C
975 0.13
1200 0.17
1350 0.21
CU36D
975 0.10
1200 0.13
1350 0.15
CU42C
1150 0.17
1400 0.22
1575 0.27
CU42D
1150 0.13
1400 0.17
1575 0.20
CU48C
1300 0.20
1600 0.27
1800 0.31
CU48D
1300 0.14
1600 0.19
1800 0.23
CU60C
1625 0.25
1800 0.30
2000 0.35
2250 0.43
CU60D
1625 0.21
1800 0.25
2000 0.30
2250 0.36
APPLICATION FACTOR-RATED CFM VS. ACTUAL CFM
% Of Rated Air Flow (CFM)*
80% 90% 100% 110% 120%
Capacity Factor
0.96 0.98 1 1.02 1.03