23
Table 5. Thermostat Parameters
Parameter
(In alphabetical
order)
Description
DAT Integral
Gain
(Lennox Variable
Capacity Outdoor
Units)
The indicates how stable the system is attempting to reach the
discharge air temperature set point. You may hear the compressor
hunting (ramping up and down) adjusting to lower setting will correct.
Lennox advises not to make changes to this setting without rst
contacting Lennox technical support or Lennox eld technical
consultant.
Default is 3.0. Range is 1.0 to 15.0 in increments of 0.5.
DAT Offset
This parameter is only available when a Lennox variable capacity
outdoor units is installed along with a discharge air temperature
sensor (DATS) Installed is used.
Default is 0.0°F (0.0°C). Range is -5.0°F to 5.0°F (-2.88 to 2.78°C) in
increments of 0.5°F (0.28°C).
DAT Proportional
Gain
(Lennox Variable
Capacity Outdoor
Units)
This is how the system attempts to reach the discharge air
temperature set point.
Lennox advises not to make changes to this setting without rst
contacting Lennox technical support or Lennox eld technical
consultant.
Default is 3.0. Range is 1.0 to 15.0 in increments of 0.5.
Dew Point
Adjustment
The Dew Point Adjustment can be set from -15% to +15%. These
settings allow adjustments to the Dew Point setting for the home.
Some homes may require an adjustment to help maintain comfort.
If condensation is present on windows, set the adjustment lower,
between -15% to -5%. If the home feels dry, set the adjustment
upwards, between +5 to +15%.
NOTE: On some outdoor units, dew point adjustment requires an
outdoor air (temperature) sensor (OATS) (X2658) and is
automatically controlled by the outside temperature.
Display Pure Air
Options are on and off. Default is off. When on it will display the
PureAir S information on the home screen. Setting is ignore if
PureAir S is not installed.
Display Indoor
Humidity
Options are on and off. Default is off.
Display Outdoor
Weather
Options are on and off. Default is off.
Electric Heat
Control Mode
(Single and Two-
Stage Lennox
Communicating
Outdoor Units Only)
In heat pump applications, the electric heat is staged to provide
supplemental heat to meet desired comfort levels. When the electric
heat section is used in applications that do not have a heat pump, the
elements are staged to limit heat so that it meets heating demands
only.
Options are Standard and EvenHeat. Default is Standard.
Table 5. Thermostat Parameters
Parameter
(In alphabetical
order)
Description
Electric Heat
Stages During
Defrost
Can increase or decrease the number of electric elements to come
on during a call for defrost. (Thermostat will have a demand for heat.)
Range is 0 to 5 electric heat stages. Default is 2. Adjustments are in
increments of 1.
NOTE: Selecting 0 will not allow any electric heat stages during
defrost.
Electric Heating
Activation
Hold Time
This parameter represents the amount of time the system waits to
check the slope of the temperature against the value in “Aux Heating
Activation Threshold” parameter. Range is 0~60 minutes with a
default of 10 minutes. Increments are in 5 minute intervals.
Electric Heating
Activation Temp
Difference
When the system is operating at full heat pump demand, this is the
amount of °F (°C) below the set point that is allowed before allowing
the use of Aux heat to supplement the heat pump. This parameter is
only available when the system is congured with an air handler and
variable capacity heat pump.
Range is 0.5 - 10ºF. Default 1.5ºF. Increment of 0.5ºF.
Equipment
Name
A unique name can be assigned to this component. Name can be
up to 29 characters. Name can consist of letters, numbers, special
characters and spaces. Default name is subnet controller.
EvenHeat
Discharge Temp
When in EvenHeat Control Mode, the thermostat will stage
the electric heat sections to maintain a constant discharge air
temperature. The system must have a DATS connected to the system
to show this parameter.
NOTE: Not selectable on Lennox variable capacity outdoor units.
Electric heat elements will be staged on by the demand of
the thermostat.
Range is 85 to 130ºF (29.4 to 54.4ºC). Default is 85ºF (29.4ºC).
Adjustments can be made in increments of 15ºF (8.4ºC) .
To Next Page
Loading...
Need help?
General
