7
Units with SystemVu™ controls
On units equipped with the factory-installed SystemVu controller
the Fan Speed settings are accessed through the SystemVu interface.
1. Check the job specifications for the cfm (cubic feet per
minute) and ESP (external static pressure) required.
2. Using the chart on the Fan Speed Set Up labels (see Fig. 11),
calculate the rpm from the cfm and ESP for the base unit.
3. If installing any accessories listed at the bottom of the Set
Up Label, add accessory rpm to base unit rpm in upper
portion of label.
NOTE: The Fan Speed Set Up labels are located on the High
Voltage cover in the Control Box.
4. Press any key on the SystemVu interface to activate the
display backlight and then press the MENU key.
5. Using the UP and DOWN arrow keys highlight SET-
TINGS and then press ENTER.
6. Use the DOWN arrow key highlight the UNIT CONFIG-
URATIONS menu then press ENTER.
7. Highlight UNIT CONFIGURATIONS then press ENTER.
8. Highlight INDOOR FAN and then press ENTER.
9. Refer to the job specifications to set the following, deter-
mining the values per the rpm calculator label (see
Fig. 11). Use the UP and DOWN arrow keys and the
BACK key to set the values. Press ENTER after setting
each value to continue to the next selection.
• IDF VENT SPD
• IDF HEAT SPD
•IDF LOW COOL SPD
• IDF HIGH SPD
• IDF FREE COOL SPD
For further details see the FC/GC Series Single Package Rooftop
Units with SystemVu Controller Controls, Start-up, Operation and
Troubleshooting manual.
NOTE(S): Values in the Field Accessories section are RPM adders.
Fig. 11 — Example of Fan Speed Set Up Labels for SystemVu™ Controls
Field Accessories:
5000
Economizer
ESP in. wg
RPM Calculator
CFM
0.2
1250
1336
1423
1510
1598
1687
1776
1866
1955
3000
3250
3500
3750
4000
4250
4500
4750
89
0.4
1348
1428
1509
1591
1675
1759
1845
1931
2018
89
0.6
1441
1515
1591
1669
1749
1829
1912
1995
2079
0.8
1528
1598
1670
1744
1820
1898
1977
2057
2138 2197
89
1.0
1610
1677
1746
1817
1890
1964
2041
2118 2178
89
1.2
1688
1753
1819
1887
1957
2029
2103
2092
2163
89
1.4
1762
1824
1888
1954
2022
2153
2019
2085
89
1.6 1.8 2.0
1832
1893
1955
2082
2146
1899
1959
2020
2143
1963
2021
2081
89 89 89 89
UNIT MODEL NUMBER