Johnson Controls ZL Series Installation Manual page 49

Airflow performance
Table 22: Example supply air blower performance- ZL08 (7.5 ton) bottom duct
cfm
0.2 0.4
rpm bhp rpm bhp
2250 556 0.45 621 0.65
2400 567 0.53 632 0.73
2600 580 0.65 646 0.85
2800 595 0.79 660 0.99
3000 609 0.94 674 1.14
3200 625 1.10 690 1.30
3400 641 1.28 706 1.47
Standard static option with motor rated at 2.4 hp
* Exceeds recommended blower speed
Table 23: Example rpm selection
Airflow
Model Size (ton)
option
Standard
ZL 08 (7.5) Medium
High static
Table 24: Example additional static resistance
1
Cooling
Model Size (ton) cfm
only 1
2,200 0.04
2,600 0.06
3,000 0.10
3,400 0.13
08 (7.5)
3,800 0.16
09 (8.5)
ZL 4,000 0.17
12 (10.0)
4,400 0.20
14 (12.5)
4,800 0.22
5,200 0.24
5,600 0.26
6,000 0.28
1 Add these values to the available static resistance in the respective Blower Performance Tables.
2 Deduct these values from the available external static pressure shown in the respective Blower Performance Tables.
3 The pressure drop through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return
air duct is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.
Table 25: rpm selection
Airflow
Model Size (ton)
option
Standard
ZL 08 (7.5) Medium
High static
Standard
ZL 09 (8.5) Medium
High static
Standard
ZL 12 (10) Medium
High static
Standard
ZL 14 (12.5) Medium
High static
0.6 0.8
rpm bhp rpm bhp rpm
683 0.83 742 1.00
694 0.91 753 1.09
707 1.03 766 1.21
722 1.17 780 1.35
736 1.32 795 1.50
752 1.48 810 1.66
768 1.66 827 1.83
Medium static option with motor rated at 2.9 hp
High static option with motor rated at 3.7 hp
Blower Motor
Phase Max bhp
sheave sheave
3 2.4 AK74 1VL34
3 2.4 AK74 1VL44
3 3.7 AK74 1VP50
2 , 3
Economizer 2 3
,
4 in. filters 2
0.11 —
0.13 —
0.17 —
0.20 —
0.25 —
0.28 —
0.33 —
0.38 —
0.43 —
0.46 —
0.50 —
Blower Motor
Phase Max bhp
sheave sheave
3 2.4 AK74 1VL34
3 2.4 AK74 1VL44
3 3.7 AK74 1VP50
3 2.4 AK74 1VL34
3 2.4 AK74 1VL44
3 3.7 AK74 1VP50
3 2.4 AK79 1VL44
3 3.7 AK79 1VP50
3 5.25 BK85 1VP56
3 2.9 AK79 1VL44
3 3.7 AK79 1VP50
3 5.25 BK85 1VP56
Johnson Controls Ducted Systems
Available external static
1.0 1.2 1.4
bhp rpm bhp rpm
798 1.18 852 1.34 904
809 1.26 863 1.43 914
823 1.38 876 1.55 928
837 1.52 890 1.69 942
851 1.67 905 1.83 957
867 1.83 921 2.00 972
883 2.00 937 2.17 989
6 turns 5 turns 4 turns
open open open
N/A 475 525
N/A 700 750
N/A 850 900
6/6.5 9.2/10.5/11 13.8/14/16
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
— — —
6 turns 5 turns 4 turns
open open open
N/A 475 525
N/A 700 750
N/A 850 900
N/A 475 525
N/A 700 750
N/A 850 900
N/A 653 700
N/A 793 840
953 997 1041
N/A 653 700
N/A 793 840
953 997 1041
Installation Manual ZL Series 7.5- 12.5 Ton 60 Hertz R-410A
1.6 1.8
bhp rpm bhp rpm bhp
1.51 954 1.69 1003 1.87
1.60 964 1.77 1013 1.95
1.72 978 1.89 1027 2.07
1.86 992 2.03 1041 2.21
2.00 1007 2.18 1056 2.36
2.17 1022 2.34 1071 2.52
2.34 1039 2.52 1087 2.7
3 turns 2 turns 1 turns
open open open
575 625
800 850
950 1000 1050
Electric heat kW
2
16/16.5/17 23 24.8/25.5/27.8 32/33/34
0.07 — 0.09
0.09 — 0.11
0.12 — 0.14
0.15 — 0.18
0.19 — 0.22
0.21 — 0.24
0.25 — 0.29
0.30 — 0.34
0.35 — 0.39
0.41 — 0.45
0.48 — 0.52
3 turns 2 turns 1 turns
open open open
575 625
800 850
950 1000 1050
575 625
800 850
950 1000 1050
747 793
887 933
1085 1130 1174
747 793
887 933
1085 1130 1174
2.0
rpm bhp
1050 2.14
1060 2.14
1074 2.27
1088 2.4
1100 2.55
* *
* *
Fully closed
675 725
900 950
1100
41.7/42.4
0.10 0.12
0.12 0.15
0.15 0.19
0.19 0.23
0.23 0.27
0.25 0.30
0.30 0.35
0.35 0.41
0.41 0.47
0.47 0.54
0.54 0.60
Fully closed
675 725
900 950
1100
675 725
900 950
1100
840 887
980 1027
N/A
840 887
980 1027
N/A
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