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Unit Startup
b. Touch Manual Control Settings in the Settings
screen.
c. Touch Supply Fan Manual Override in the Manual
Control Settings screen.
d.
Touch Manual, then touch Change value to: to
adjust the speed setting, press Enter, then press
Apply.
e. When done testing, touch Clear All Manual
Overrides or select the individual override and
press Auto.
94
4. The above procedure can be followed for testing and
setup of relief fans and condenser fans.
Note: Changes to the unit's design relief airflow rating
is modified at the user interface by adjusting the
Relief Fan Maximum Speed Setpoint located
under the Service Settings menu.
Check all fans for proper rotation. Supply Fan rotation
is indicated by an arrow located on the fan housing
(clockwise from motor side of fan). Relief Fan rotation is
counter-clockwise when viewed from the motor side of
the fan assembly. Condenser Fan rotation is clockwise
when viewed from the top.
Figure 42. 90-150 tons condenser fan locations
If all of the fans are rotating backwards:
1. Press the STOP key on the user interface in the unit
control panel to stop the fan operation.
2. Open the field-supplied disconnect switch upstream of
the rooftop unit. Lock the disconnect switch in the open
position while working at the unit.
RT-SVX073A-EN
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