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Table 6. Smart Hub Parameters
Parameter
(In alphabetical
order)
Description
Stage Delay
Timers
(2 through 6)
Second through Sixth Stage Delay timer (where applicable) - If staged delay timers are “Enabled”, the default is 20 minutes but can be programmed from 5 to 120
minutes in 5-minute increments. If the first stage fails to advance the ambient temperature toward the set point by 1.0°F (0.56°C) in the programmed delay time, then the
second stage is activated.
NOTE:
The Second Stage Delay Timer (when Staged Delay Timers is Enabled) is used for both HEATING and COOLING. However, if the system has a variable capacity
furnace,Second Stage Delay Timer will only be used for COOLING (not for heating, as the variable capacity algorithm ignores delay timers).
Stage
Differentials
(First)
First Stage Differential - Stage 1 differential is used in all thermostats. The default is 1.0°F but can be programmed between 0.5° and 3.0°F in 0.5°F increments.
Stage
Differentials
(2 through 6)
Number of stages in thermostat is dependent on equipment that is installed.
NOTE:
Lennox variable capacity systems will stage electric heat but not on differentials. It will use the thermostat PI logic to stage the electric heat. If the system has a
variable capacity furnace or zoning all stage differentials will be ignored.
Temp Reading
Calibration
Range is -5.0 to 5.0°F (-2.78 to -2.78°C). Default is 0.0°F (-0.0°C).
If it is determine that the actual temperature being detected at the thermostat is off based on independent readings using other ambient temperature reading devices, the
display can be adjusted using this setting.
Temperature
Control Mode
The Feels-Like feature factors in the outdoor temperature and indoor humidity for a more accurate control of the temperature in the home. Either an outdoor temperature
sensor is used or Internet Weather is enabled for this feature to operate. Modifying this setting here will also change the feature status on the user settings screen.
•
Normal
- This setting cools or heats the home to the desired temperature setting (Feels Like is OFF.
•
Comfort
- This setting cools or heats the home to the desired temperature setting (Feels Like) is ON. When set to ON, other parameters are modified to optimal settings
for this feature. Those setting changes will be listed on-screen when Comfort is enabled.
Default is
Normal
.
Ventilation Control Mode - timed (default)
Ventilation Minutes
Per Hour
Parameter range is 0.0 - 60.0 minutes. Default is 20.0 minutes. Can be adjusted in increments of 1.0 minutes.
•
The system first tries to satisfy the ventilation time by only ventilating while conditioning is occurring. NOTE: Continuous fan is NOT considered conditioning.
•
When the required time remaining to ventilate for the hour does not equals the amount of time remaining in that hour, the system begins ventilation and does not stop
until the ventilation time requirement is satisfied.
•
When ventilating without a conditioning demand, the ventilation output is active as well as a continuous indoor fan demand.
•
When ventilating with a conditioning demand, the ventilation output is active with the conditioning demand outputs.
Ventilation Rates
Thermostat ventilation CFM parameters are to be adjusted only after the HRV/ERV set up is completed and the CFMs are known. Once the thermostat’s CFMs are adjusted they are
used with the thermostat’s timer algorithm to determine how long to run the HRV/ERV and to change from low to high speed if a 2-stage HRV/ERVs.
Ventilation Rate
(Only listed for
1-speed ERV or
HRV)
Parameter range is 20 - 500 CFM. Default is 130 CFM. Can be adjusted in increments of 1.0 CFM.
Ventilation Rate for
Low Speed
(Only listed for
2-speed ERV or HRV
Parameter range is 10 - 200 CFM. Default is 50 CFM. Can be adjusted in increments of 1.0 CFM.
Ventilation Rate for
High Speed
(Only listed for
2-speed ERV or HRV
Parameter range is 20 - 500 CFM. Default is 130 CFM. Can be adjusted in increments of 1.0 CFM.
