Carrier 50FC 04 Series Service And Maintenance Instructions page 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. 9),
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. For electric heaters use only one adder (e.g., 2 stage
heater uses only 2 stage adder, not 1 stage plus 2 stage).
NOTE: The Fan Speed Set Up labels are located on the High Volt-
age 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.
RPM
Field Accessories:
1 Stage E Heat
2 Stage E Heat
NOTE: Values in the Field Accessories section are vdc adders.
Fig. 9 — Example of Fan Speed Set Up Labels for SystemVu
Calculator
0.2 0.4 0.6
1500 1301 1477 1639
1625
1381 1544 1699
1750 1463 1615 1763
1875 1548 1688 1828
2000 1633 1764 1897
2125 1720 1842 1967
2250 1808 1921 2040
2375 1897 2003 2115
2500 1987 2068 2191
Economizer
66 66
80 80
107 107 107
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. 9).
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.
ESP in. wg
0.8 1.0 1.2
1788 1925 2054
1843 1976 2101
1902 2031 2152
1962 2087 2206
2025 2146 2262
2090 2208 2320
2157 2271 2380
2227 2336
2298
66 66 66 66
80 80 80 80
107 107 107
7
A
1.4 1.6 1.8 2.0
2174 2289
2220 2332
2268 2378
2318
2372
66 66
80 80
107 107
™ Controls