• HP Lockout: Adjustable from -20 to 55°F (-28 to 13°C) or None. Default = None
• Furnace, Electric Heat or Hydronic Lockout: Adjustable from 15 to 55°F (-9 to 13°C) or
None. Default = None
• Defrost with Furnace, Electric Heat or Hydronic: Yes or No. Default = Yes
– For Geothermal units, lockout for auxiliary heat (furnace or electric resistance) is not
enabled.
NOTE: When simultaneous heating and cooling demand feature is ON, the system will try to
respect the settings for heat source but may override the settings if the preferred heat source is
unable to deliver heat.
6.3.6. Stages / Latch for 18VS
For 18VS heat pumps, the cooling and heating stage/latch can be changed. Select cooling or
heating next to stages/latch. The maximum stage and the minimum stage can be selected. The
minimum selected stage can be locked-in or set based upon the outside temperature.
6.3.7. Geothermal HP (when available)
First touch SETUP, then touch Geo HP to set up the parameters for the Geo HP unit.
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