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Table 5. Thermostat Parameters
Parameter
(In alphabetical
order)
Description
Smooth Setback
Recovery (SSR)
When enabled, smooth set back begins recovery up to two hours
before the programmed time so that the programmed temperature
is reached at the corresponding programmed event time. Assume
12°F (6.72°C) per hour for rst-stage gas/electric heating and 6°F
(3.36°C) per hour for rst-stage compressor based heating or cooling.
With Smooth Set Back disabled, the system will start a recovery at
the programmed time. Options are enabled or disabled. Default is
enabled.
The SSR set point calculation is as follows:
Current
SSR CSP
−
Current Program CSPTarget Program CSP
−
Current
SSR HSP
Current Program HSPTarget Program HSP
−
N
−
N
For
New
SSR
HSP
For
New
SSR
CSP
Where: CSP = Cool Set Point
HSP = Heat Set Point
N = number of 30 second intervals to the target program set
point
Note: N = 240 when target program set point is 2 hours away
(maximum recovery time)
Rules for SSR:
• SSR is enabled when both “Smooth Setback Recovery” is set to
enabled (default) and the program schedule is turned on.
• SSR does NOT turn off stage delay timers.
• SSR will NOT change the dead band between heating and cooling
modes.
• SSR will not overshoot the target set point.
• SSR will reset if the user updates the program schedule during the
active SSR period
Stage Delay
Timers
(First)
Enabled (default) setting: When enabled all stage delay timers
(stages 2 through 6) are enabled and will serve to bring on additional
stage(s) of cooling or heating on a timed basis (default 20 minutes)
Disabled setting: All stages delay timers are disabled. Heat/cool
stages are changed based on temperature
NOTE: The second-stage delay timer (when stage timers is Enabled)
is used for both HEATING and COOLING. However, if the
system has a variable capacity furnace, zoning or variable
outdoor unit, all stage delay timer will be ignored.
Table 5. Thermostat 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 rst 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 modied to optimal settings for this feature. Those
setting changes will be listed on-screen when Comfort is enabled.
Default is Normal.
Thermostat
Name
Here you can rename the thermostat.
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