Drive Selection - York Sun Select YV28 Manual

Table 58: Belt tension
Size Motor-Static
Deflection
force (lb)
7.5HP - STD
YV28 10HP - MED
15HP - HIGH
7.5HP - STD
YV30 10HP - MED
15HP - HIGH
7.5HP - STD
YV35 10HP - MED
15HP - HIGH
10HP - STD
YV40 15HP - MED
20HP - HIGH
10HP - STD
YV50 15HP - MED
20HP - HIGH

Drive selection

1. Determine the required airflow.
2. Calculate or measure the amount of external
static pressure.
3. With the operating point determined from
the previous steps, locate this point on the
appropriate supply air blower performance
table. Linear interpolation may be necessary.
4. Note the RPM and BHP from the previous
step and locate the appropriate motor and/or
drive.
Table 59: Example supply air blower performance
Air flow
0.3 0.4
(CFM)
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
Standard 7.5HP and field drive
8000 573 2.29 599 2.53 649
9000 606 2.92 631 3.15 678
10000 642 3.62 665 3.85 711
11000 680 4.41 702 4.64 745
12000 721 5.31 741 5.55 782
13000 763 6.36 783 6.60 822
Note: Blower performance includes gas heat exchangers and 2-in. filters. See the Static resistance
table for additional applications. See the RPM selection table to determine the required motor sheave
setting and to determine the maximum continuous BHP. kW = BHP x 0.93
Table 60: Example RPM selection
Model HP Max BHP
7.5 8.24
YV28 10 10.90
15 16.13
Belt tension
Max PRM
Deflection
distance (in.)
5.78 0.4
4.48 0.4 1100
5.72 0.4
5.9 0.4
6.91 0.4 1100
5.93 0.4
5.78 0.4
4.48 0.4 1150
5.72 0.4
7.42 0.4
8.85 0.4 1150
7.23 0.4
7.42 0.4
8.85 0.4 1150
7.23 0.4
Available external static pressure - IWG
0.6 0.8 1
Standard 7.5HP and drive
2.98 696 3.39 742 3.78 786
3.59 724 4.01 768 4.41 810
4.29 754 4.72 796 5.15 837
5.09 787 5.54 827 6.00 867
6.02 822 6.50 861 6.99 899
7.10 860 7.61 897 8.14 933
Motor Blower
6 turns open 5 turns open 4 turns open 3 turns open 2 turns open
sheave sheave
1VP65 - 1 3/8 1B5V124
2VP60- 1 3/8 2B5V94
2VP60- 1 5/8 2B5V86
Johnson Controls Ducted Systems
5. Review the BHP compared to the motor
options available. Select the appropriate
motor and/or drive.
6. Review the RPM range for the motor options
available. Select the appropriate drive if
multiple drives are available for the chosen
motor.
7. Determine the turns open to obtain the
required operation point.
Example
1. 9000 CFM
2. 1.2 IWG
3. Using the supply air blower performance table
below, the following data point was located:
810 RPM and 4.82 BHP.
4. Using the following RPM selection table, Size X
and Model Y is found.
5. 4.82 BHP does not exceed the maximum
continuous BHP rating of any of the three
motor options, so all three motors are still
eligible for selection.
6. 810 RPM falls within the range of the 7.5-HP
drive.
7. Using the 7.5-HP motor, 2.5 turns open
achieves 810 RPM.
1.2 1.4 1.6
Medium 10HP and drive
4.16 828 4.55 869 4.95 910
4.82 851 5.24 892 5.67 931
5.58 877 6.04 916 6.51 955
6.47 906 6.96 943 7.47 981
7.49 936 8.02 973 8.58 1009 9.18 1045 9.81 1080 10.49 1115 11.21 1132 11.58
8.69 969 9.26 1005 9.88 1040 10.52 1075 11.22 1109 11.95 1143 12.74
717 745 772
848 884 920
945 985 1026
Installation Manual: YORK
1.8 2 2.2
High 20 HP and drive
5.36 949 5.79 988 6.25 1026 6.75 1045 7.00
6.13 970 6.60 1007 7.12 1045 7.66 1063 7.95
7.00 992 7.53 1029 8.09 1066 8.69 1084 9.01
8.01 1017 8.59 1054 9.21 1089 9.87 1107 10.21
1 turn open
800 827 855
956 992 1028
1066 1106 1147
Sun™ Select YV28 to YV50
®
2.4 2.5
- -
Fully closed
882
1064
n/a
79