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Installation and Commissioning Guide - Split Ducted Variable Capacity Commercial Indoor Unit
Doc. No. 0525 - 068
Ver. 3 201104
Installation and Commissioning Guide
Variable Capacity Commercial
13. EC Indoor Fan Commissioning
There are various ways of commissioning Indoor Fan Airflow. This could be done using the Outdoor Unit CPU, NEO/LC7-2
Wall Control or 3rd Party Controller depending on the installation requirement. See Outdoor Unit Commissioning Guide
for details.
It is possible to operate the fan, without an outdoor or NEO/LC7-2 connected, to allow air balancing to take place. This
can be done by following the steps below:
Step 1. On the CMI board, set dip switch 8 to
ON
.
Step 2. Apply power to the Indoor unit. Using the on-board potentiometer, manually adjust the fan PWM speed. This will
be displayed on the 7 segment display.
FILTER
INDICATION
PWM
FAN1 OUT
PWM
FAN2 OUT
AUX SENSOR
S1
COM
S2
NC
NO
COM
OFF
ON
PWM FAN OUTPUT
0-10V FAN INPUTS
INTERNAL FAN SPEED
1 2 3 4 5 6 7 8
STANDARD DIP
SWITCH SETTINGS
MANUAL FAN SPEED
POT ADJUST
7 SEGMENT LCD DISPLAY
SWITCH 8
Step 3. Once the air balancing is complete, set the dip switch 8 back to
OFF
.
Step 4. Refer back to Outdoor Unit for completing system configuration.
NOTE
Once dip-switch number 8 is on the indoor fan will start immediately. If the dip switch is left on the indoor fan will remain
running at all times.
