Carrier 50GCQ Series - Page 7

7
Units with SystemVu™ controls
On units equipped with the factory-installed SystemVu con-
troller 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
SETTINGS and then press ENTER.
6. Using the DOWN arrow key, highlight the UNIT CON-
FIGURATIONS 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 FCQ/GCQ Series Single Package Roof-
top Units with SystemVu Controller Controls, Start-up, Operation
and Troubleshooting manual.
NOTE: Values in the Field Accessories section are vdc adders.
Fig. 9 — Example of Fan Speed Set Up Labels for SystemVu™ Controls
A
Field Accessories:
2500
Economizer
ESP in. wg
RPM Calculator
CFM
0.2
1301
1381
1463
1548
1633
1720
1808
1897
1987
1500
1625
1750
1875
2000
2125
2250
2375
66
80
107
0.4
1477
1544
1615
1688
1764
1842
1921
2003
2068
66
0.6
1639
1699
1763
1828
1897
1967
2040
2115
2191
0.8
1788
1843
1902
1962
2025
2090
2157
2227
2298
66
1.0
1925
1976
2031
2087
2146
2208
2271
2336
66
1.2
2054
2101
2152
2206
2262
2320
2380
66
1.4
2174
2220
2268
2318
2372
66
1.6 1.8 2.0
2289
2332
2378
66 66
80 80 80 80 80 80 80
107 107 107 107 107 107 107
1 Stage E Heat
2 Stage E Heat
UNIT MODEL NUMBER