Table 52: RPM Selection
Model
Size
(Tons)
Airflow
Option
Phase
MAX
BHP
Blower
Sheave
Motor
Sheave
6 Turns
Open
5 Turns
Open
4 Turns
Open
3 Turns
Open
2 Turns
Open
1 Turn
Open
Fully
Closed
Std. 3 2.4 AK74 1VL34 N/A 475 525 575 625 675 725
Med. 3 2.9 AK74 1VL44 N/A 700 750 800 850 900 950ZY 07 (6)
H. Static 3 3.7 AK74 1VP50 N/A 850 900 950 1000 1050 1100
Std. 3 2.4 AK74 1VL34 N/A 475 525 575 625 675 725
Med. 3 2.9 AK74 1VL44 N/A 700 750 800 850 900 950ZY A7 (6)
H. Static 3 3.7 AK74 1VP50 N/A 850 900 950 1000 1050 1100
Std. 3 2.4 AK74 1VL34 N/A 475 525 575 625 675 725
Med. 3 2.4 AK74 1VL44 N/A 700 750 800 850 900 950ZY 08 (7.5)
H. Static 3 3.7 AK74 1VP50 N/A 850 900 950 1000 1050 1100
Std. 3 2.4 AK74 1VL34 N/A 475 525 575 625 675 725
Med. 3 2.4 AK74 1VL44 N/A 700 750 800 850 900 950ZY 9 (8.5)
H. Static 3 3.7 AK74 1VP50 N/A 850 900 950 1000 1050 1100
Std. 3 2.4 AK79 1VL44 N/A 653 700 747 793 840 887
Med. 3 3.7 AK79 1VP50 N/A 793 840 887 933 980 1027
ZY 12 (10)
H. Static 3 5.25 BK85 1VP56 953 997 1041 1085 1130 1174 N/A
INSTALLATION MANUAL ZY SERIES 3-10ton 60 Hertz R-410A96
Johnson Controls Ducted Systems