Airflow performance
Table 29: Example ZY08 (7.5 Ton) Side Duct
1
AVAILABLE EXTERNAL STATIC PRESSURE - IWG
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
CFM
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
2250
547
0.39
610
0.60
670
0.81
727
1.01
783
1.21
836
1.41
888
1.59
939
1.78
989
1.96
1038
2.13
2400
556
0.47
619
0.69
679
0.90
736
1.10
792
1.30
845
1.49
897
1.68
948
1.86
998
2.04
1047
2.22
2600
568
0.60
631
0.81
691
1.02
749
1.22
804
1.42
857
1.61
909
1.80
960
1.99
1010
2.17
1059
2.34
2800
581
0.73
644
0.95
704
1.16
762
1.36
817
1.56
871
1.75
923
1.94
973
2.13
1023
2.31
1073
2.48
3000
595
0.89
658
1.10
718
1.31
776
1.51
831
1.71
885
1.91
937
2.09
988
2.28
1038
2.46
1087
2.63
3200
610
1.05
673
1.27
733
1.48
791
1.68
846
1.88
900
2.07
952
2.26
1003
2.44
1053
2.62
--
--
3400
627
1.23
689
1.45
750
1.66
807
1.86
863
2.06
916
2.25
968
2.44
1019
2.62
1069
2.80
--
--
3600
644
1.42
707
1.64
767
1.85
824
2.05
880
2.25
933
2.44
985
2.63
1036
2.82
1086
3.00
--
--
3750
657
1.58
720
1.79
780
2.00
838
2.20
893
2.40
947
2.60
999
2.78
1049
2.97
1099
3.15
--
--
Standard Static Option with Motor rated at 2.4-hp>
Medium Static Option with Motor rated at 2.4-hp
High Static Option with Motor rated at 3.7-hp
--
Exceeds recommended blower speed
1
Blower performance includes gas heat exchangers and 2 in. filters. See STATIC RESISTANCE table for additional applications.
Note:
See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP. kW = 0.929
x BHP
Table 30: Example 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 Turns
Open
Fully
Closed
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
950
ZY
08 (7.5)
H. Static
3
3.7
AK74
1VP50
N/A
850
900
950
1000
1050
1100
Table 31: Example Additional Static Resistance
Electric Heat kW
2
Model Size (Tons)
CFM
Cooling
Only
1
Economizer
2, 3
4 in. Filters
2
6/6.5
9.2/10.5/11 13.8/14/16 16/16.5/17
23
24.8/25.5/27.8 32/33/34 41.7/42.4
2200
0.04
0.11
---
---
---
---
0.07
---
0.09
0.10
0.12
2600
0.06
0.13
---
---
---
---
0.09
---
0.11
0.12
0.15
3000
0.10
0.17
---
---
---
---
0.12
---
0.14
0.15
0.19
3400
0.13
0.20
---
---
---
---
0.15
---
0.18
0.19
0.23
3800
0.16
0.25
---
---
---
---
0.19
---
0.22
0.23
0.27
4000
0.17
0.28
---
---
---
---
0.21
---
0.24
0.25
0.30
4400
0.20
0.33
---
---
---
---
0.25
---
0.29
0.30
0.35
4800
0.22
0.38
---
---
---
---
0.30
---
0.34
0.35
0.41
5200
0.24
0.43
---
---
---
---
0.35
---
0.39
0.41
0.47
5600
0.26
0.46
---
---
---
---
0.41
---
0.45
0.47
0.54
ZY
08 (7.5),
09 (8.5),
12 (10.0)
6000
0.28
0.50
---
---
---
---
0.48
---
0.52
0.54
0.60
INSTALLATION MANUAL ZY SERIES 3 - 10 ton 60 Hertz R-410A
85
Johnson Controls Ducted Systems
Summary of Contents for ZY Series
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Page 140: ...INSTALLATION MANUAL ZY SERIES 3 10 ton 60 Hertz R 410A 140 Johnson Controls Ducted Systems ...
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