ION SYST0101CW Installation Instructions Manual page 30

6.3.4.5. Quiet Shift
This option turns on Quiet Shift function in 1-stage or 2-stage communicating heat pumps.
After the selection is made, touch SAVE.
NOTE: This option is not available with SmartSense heat pumps.
• Quiet Shift: On or Off. Default = Off
6.3.4.6. Defrost Fan Delay
Turns on the outdoor unit fan at the end of a defrost cycle for approximately 12 seconds. This
helps to reduce any nuisance refrigerant noise caused by the switching reversing valve. This
setup is only available on communicating heat pumps. After the selection is made, touch SAVE.
• Defrost Fan Delay: Yes or No. Default = No
6.3.4.7. Brownout Disable
This option turns off the high voltage brownout detection function in the outdoor unit control.
After the selection is made, touch SAVE.
• Brownout Disable: On or Off. Default = Off
6.3.4.8. Low Air Multiplier
Adjusts the airflow speed on non-communicating two-stage units. Choose 0.65 for units with a
Bristol compressor, choose 0.80 (default) for units with a Copeland scroll compressor.
6.3.4.9. Energy Efficiency
This option is used to input the published ratings of the installed air conditioner or heat pump as
part of the energy tracking calculation. After the ratings are entered, touch SAVE.
6.3.5. Heat Source Lockout
First touch SETUP, then touch HEAT SOURCE LOCKOUTS to set up the parameters for the
AC/Heat Pump unit.
For hydronic heat applications, this option allows the installer to set the lockout temperatures
below which only the hydronic coil will operate, and the lockout temperature above which the
hydronic coil will not operate. After the selections are made, touch SAVE.
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