Ecobee Smart Si Installation Manual page 30

from running when the outdoor temperature
is too low, thus resulting in damage to the
compressor. You can also set this value to
determine when you want the auxiliary heat
(if installed) to engage to help meet the
set temperature. The temperature range is
adjustable from 0 to 65 °F (–17.8 to 18.3 °C) or
can be completely disabled. Note: You need an
internet connection for this feature to operate
properly.
Allow HP with Aux Heat
there is a source of auxiliary heat, it will turn on
in addition to the heat pump. The heat pump
will be energized for the first 30 minutes. If,
after 30 minutes, the set point has not been
met, the auxiliary heat will be energized to
assist the heat pump in meeting the load.
If you select No, the heat pump will be
energized for up to 2 hours. If after 2 hours the
set point has not been met, the thermostat
will shutdown the heat pump and energize
the auxiliary heat to meet the set point. This
option should also be used for installation
where the heat pump evaporator coil is
downstream from the source of auxiliary heat.
This setting is only available when the Comp
to Aux Temp Delta and Comp to Aux Runtime
settings are both set to Auto (default).
Furnace
Allows you to enable and configure up to a
2-stage conventional heat source. If you have
selected a heat pump as your primary source,
this feature allows you to configure the 1st stage
of auxiliary heat connected to the system.
If you select Yes and
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