24 BAS-SVU10C-EN
Installer Configuration Parameter Menu
Notes for heat pump models: When the outside air sensor is not connected or is shorted, the
thermostat bypasses the heating / cooling lockouts and the low / high balance points. Also, when
set in Emergency system mode, the heat pump model bypasses heating lockout and permits
auxiliary heating whenever a heating demand occurs.
Comf/eco
Comfort or economy
mode
Def
ault value =
Comfort
Sets the operation and interaction mode of the heat pump w
ith the auxi
liary heat.
Comfort mode. In Heating
mode.
If the heat pump is not able to satisfy the heating setpoint
, the auxiliary heat will be energized to satisfy
the same heating setpoint.
Economy mode. In Heatin
g mode.
If the heat pump is not able to satisfy the heating setpoint
, the auxiliary heat will be energized to satisfy
only when the temperature has dropped 2.0°F (1.1°C) below the heating setpoint. Selecting economy
mode will add a deadband between the heat pump andand auxiliary heat in heating mode. The actual
temperature maintained will be lower than the true heating setpoint to maximize the heat pump
operation. When the outdoor air temperature drops below the low balance point, the deadband will
be eliminated and the auxiliary heat will maintain the true heating setpoint alone.
Economy mode. In Eme
rge
ncy mode.
If Emergency heat mode is se
lected, the
setpoint maintained, will be the heat
ing setpoint.
re valve
Reversing valve
opera
tion O/B
Default value = O
Heat pump reversing valve operation
O will energize the valve in cooling operation.
B will energize the valve in heating operation O or B
comp/aux
C
ompressor/auxiliary
inte
rlock
Default value = Off
Sets the operation and interaction mode of the heat pump w
ith the auxi
liary heat.
Interlock Off. In Heating mo
de.
If the heat pump is not able to satisfy the heating setpoint, the
auxiliary heat will be energized at the
same time as the heat pump stage. Typically applies when the air handler heat pump coil is installed
before the auxiliary heat. (all electric systems)
Interlock On. In Heating m
ode.
If the heat pump is not able to satisfy the heating setpo
int, the auxiliary heat will be energized and
the heat pump will be cut off. Typically applies when the air handler heat pump coil is installed after
the auxiliary heat. (add on systems) There is a 2 minute delay to restart the heat pump, when the
auxiliary heat is shut down
Off or On
Configuration
parameters
Significance
Default value
Adjustments
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