Lennox iComfort S30 Installation And Setup Manual page 26

Parameter Description
Multiple Smart Hubs in a home can be assigned to a group (up to nine groups with up to eight Smart Hubs in each group). All Smart Hubs in a group can communicate
with other Smart Hubs in the same group over the home Wi-Fi network.
Group ID
If a Smart Hub is set to Group ID 0, there will be no connectivity with another Smart Hub.
Default Group ID is 1. Valid range is 0 to 9.
The HP could not get a zone to progress 0.5 degrees towards the set point in 120 minutes (Alert Code 40 - Minor alert). System will switch to secondary heat source.
HP Heating
(Electric heat or furnace in dual fuel applications). Transition back to Heat Pump normal operation when termination setting times out.
Lockout Time
Range is 60 to 240 minutes. Default is 120 minutes. Adjustments are in increments of 30 minutes.
Options are Normal and Comfort. Default is Normal. The normal setting heats the home to the desired temperature setting. Modify the heating comfort mode to limit mini-
HP Heating
Mode mum compressor speed to 60 – 70 percent range and/or adjust comfort mode CFM.
• Normal is when the heat pump will heat the home will providing the highest efficiency.
(Lennox Modulating
Heat Pumps Only)
• Comfort is when the heat pump will deliver warmer air for comfort, but sacrifices on efficiency.
Options are Maximum Overcooling, Midpoint Overcooling and Minimum Overcooling. Default is Maximum Overcooling.
• Maximum Overcooling: Indoor temperature > (greater than) two degrees above heating setpoint.
Humiditrol Comfort
• Midpoint Overcooling: Indoor temperature > (greater than) HEAT setpoint + COOL setpoint / 2.
Adjust
• Minimum Overcooling: Indoor temperature > (greater than) two degrees below cooling setpoint.
NOTE:
XP20 and XP25 is not compatible with Humiditrol (EDA).
If it is determine that the actual humidity percentage being detected at the thermostat is off based on independent readings using other humidity reading devices, the
Humidity Reading
display can be adjusted using this setting.
Calibration
Range is -10.0 to 10.0%. Default is 0.0%.
Lock In 2nd
Stage HP by
This accessory allows the unit to lock in second stage HP heating when the outdoor temperature goes below the jumper pin setting.
Outdoor Temp
Options are off, 40°F (4°C), 45°F (7°C), 50°F (10°C) and 55°F (13°C). Default is off.
(Lennox Two-Stage
Heat Pumps Only)
Max Heat The highest temperature setting that the heat set point can be set on the thermostat. Default is 90.0F (32.33°C). Range is 60.0 to 90.0°F (15.56 to 32.22°C). Adjustable in
Setpoint
increments of 1°F (0.56°C).
Maximum allowed set point for humidification.
Max Humidification
Setpoint
Range is 15 to 45%. Default is 45%. Adjustments are in increments of 1%.
Min Cool The lowest temperature setting that the cool set point can be set on the thermostat. Range is Range is 60.0 to 90.0°F (15.56 to 32.22°C). Default is 60°F (15.56°C). Ad-
Setpoint
justments are in increments of 1°F (0.56°C).
Min
Adjustable minimum dehumidification setting.
Dehumidification
Range is 40 to 60%. Default is 40%. Adjustments are in increments of 1%.
Setpoint
Modulating
This feature is activated when the structure BTU load is less than the minimum outdoor unit cooling capacity of the outdoor unit. The system will be cycled "ON" and
Cooling Cycles
"OFF" at the selected cycles per hour to maintain the settings of the thermostat. (This governs how many cycles per hour the system will try to run when it needs to run at
Per Hour
less than minimum capacity).
(Lennox Modulating
Range is 3 to 6 cycles hours. Can be adjusted in increments of 0.5. Default is 4.
Outdoor Units Only)
Each of these terms has a multiplier (or gain) associated with it called the proportional gain and the integral gain respectively and affect responsiveness and stability
• Standard is a moderate gain suitable for nearly all installations.
• More Aggressive is a set of slightly higher gains that will make the system more responsive to changes, and will try harder to stay on the set point. This setting may cause some systems to
oscillate.
• Less Aggressive is a set of slightly lower gains that will make the system less responsive and help to stabilize an oscillating system by sacrificing a small amount of time to set point.
None of the above options will cause the system to end a call if the demand for heating or cooling remains above the minimum capacity of the system since the algorithm is designed to find the
demand that allows the system capacity to exactly match the house heating or cooling loss, creating a balance and constant temperature.
Table 4. Smart Hub Parameters
Understanding Modulating Step Change and Steady State PI Gains
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