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Table 6. Smart Hub Parameters
Parameter
(In alphabetical
order)
Description
Smart Alert
Enable
Options are disabled, conservative, medium and aggressive. Default is disabled.
• Disable - There is no monitoring of Smart Alert Enable.
•
Conservative - The system will wait longer to display any Smart Alert Enable alarms. This options allow for a minimum chance for false alarms being shown.
•
Medium (default) - Extensive testing by the Lennox development team to minimize the number of false alarms.
•
Aggressive - Will shorten time to display any Smart Alert Enable alarms.
Smart Alert Enable function monitors:
• Thermostat set point setting
• Temperature reading
•
Determine whether the system moving towards the desired temperature setting or is unable to achieve the desire temperature setting.
• Uses local climate design temperatures
• System run times.
NOTE:
Smart Alert Enable feature is disabled in a zoning system.
NOTE:
Depending on type of system (conventional heating/cooling or heat pump system) and optional equipment not all system settings will be displayed.
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 first-stage gas/electric heating and 6°F (3.36°C) per hour for first-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 CSP
Target Program CSP
−
Current
SSR HSP
Current Program HSP
Target 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.
