Lennox iComfort S30 Installation And Setup Manual page 22

Parameter Description
Default is ON. The purpose of this algorithm when set to ON is to detect systems with faults which are causing measurable loss of comfort and thus, need repair/service
CFA Cooling
intervention.
Discomfort
The algorithm monitors the duration in which the indoor temperature is above the cool set point or below the heat set point and does not approach the set-point. When an
Threshold
issue is detected alarm 901 is activated.
Options are Normal and Comfort. Default is Normal. When changing to Comfort Mode, several parameters are automatically modified for optimal system operations. The
changed parameters are listed on the screen when set to Comfort.
Cooling Mode • Normal - This setting cools the home to the desired temperature setting. Once second-stage is activated by timer or differential, it will not stage down to first-stage until
the next cooling cycle demand.
• Comfort - This is when the system could automatically stage up or down based on the current load demand.
This algorithm will determine whether the unit will run out of capacity during the hottest time of summer. It will look back everyday a minimum of three days to see if there
is a pattern and compare it to the hottest day on record for that zip code before triggering an notification. It must see a pattern before it will trigger the notification. There
Cooling
may be a component or components that will require attention.
Prognostics
The sensitivity (threshold) selection options are OFF, LOW, MEDIUM, and HIGH. The default is HIGH. The alert code notification is 65545.
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) adjust-
DAT Integral
ing to lower setting will correct.
Gain
Lennox advises not to make changes to this setting without first contacting Lennox technical support or Lennox field technical consultant.
(Lennox Modulating
Outdoor Units Only)
Default is 3.0. Range is 1.0 to 15.0 in increments of 0.5.
This parameter is only available when a Lennox modulating outdoor units is installed along with a discharge air temperature sensor (DATS) Installed is used.
DAT Offset
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
This is how the system attempts to reach the discharge air temperature set point.
Gain
Lennox advises not to make changes to this setting without first contacting Lennox technical support or Lennox field technical consultant.
(Lennox Modulating
Default is 3.0. Range is 1.0 to 15.0 in increments of 0.5.
Outdoor Units Only)
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
Dew Point
windows, set the adjustment lower, between -15% to -5%. If the home feels dry, set the adjustment upwards, between +5 to +15%.
Adjustment
Range is -15 to 15°F. Default is 0°F. Adjustments are in increments of 1°F.
Electric Heat
Control Mode 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.
(Single and Two-Stage
Lennox iComfort Out-
Options are Standard and EvenHeat. Default is Standard.
door Units Only)
Electric Heat
Can increase or decrease the number of electric elements to come on during a call for defrost. (Thermostat will have a demand for heat.)
Stages During
Range is 0 to 5 electric heat stages. Default is 2. Adjustments are in increments of 1.
Defrost
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
Equipment
Name name is subnet controller.
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.
EvenHeat
Discharge Temp
NOTE:
Not selectable on Lennox modulating 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) .
Table 4. Smart Hub Parameters
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