Installation
Table 3-10 Step Test
Supply fan will run at full speed
Supply fan will run at full speed, condenser fan
speed will adjust according to the pressure.
Compressor will run at medium speed for 3
minutes before changing to the desired speed
Cycles damper between open and
closed
Optional: When running the supply fan, condenser fan, and compressor step tests, the speed of the
component can be changed to test variable speed operation.
1. Repeat steps 1-8 in the above section until the desired step test is selected.
2. Press Down, the screen should display “Test settings”.
3. Press Enter until the desired component is selected.
4. Press Up or Down to adjust the speed and press Enter.
Note: Changing the speed of a component will change its speed only when testing that component. For
example, changing the supply fan speed will not affect its run speed during the compressor step test.
Note: The unit will stay under manual control until step “STOP” is selected. Make sure that “STOP” is selected
and the unit is on before leaving the site to avoid potential high temperature alarms. To verify, the system
status on the main screen should be “ON”.
Warning. Once the compressor has been turned on, it must be allowed to run for
at least three minutes before the next step to prevent compressor damage.
3.7.15 Set the System Clock
1. Press Esc until the main screen is displayed.
2. Press Prg and enter the password (0004). Press the Enter key.
3. Press Down until the “System” is selected, and press Enter. The cursor should be over “Date and Time”.
Press Enter.
4. Press Enter to access each individual date and time field.
5. Press Up or Down to change the value of each number and press Enter to verify and move on to the next
value. Note: the system operates on 24hr time.
6. Press Enter when all fields have been verified. The cursor should be in the upper left corner.
3.7.16 Verify Sensor Readings
All the sensors are factory calibrated before shipping; however, it is essential to verify that all sensors
connected to the controller box are properly installed.
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