Lennox iComfort S30 Installation And Setup Manual page 24

Modulating HP Heating Step Change PI Gain (XP20 and XP25)
Step change gains deal with set point changes and affects how fast the system
reaches the next set point (Example: Schedule change or adjustment to the
®
iComfort S30 setting).
Options are Less Aggressive, Standard and More Aggressive. Default is
Standard. Recommend not changing this setting.
Modulating HP Heating Cycles Per Hour (XP20 and XP25)
This is applicable to the XP25 only. This feature is activated when the structure
BTU load is less than the minimum Heat Pump heating capacity of the outdoor
unit. The system will be cycled "ON" and "OFF" at the selected cycles per hour
to maintain the settings of the iComfort
per hour the system will try to run when it needs to run at less than minimum
capacity).
Range is 3 to 6 cycles. Default is 4 cycles. Adjustments are in increments of 0.5
cycles.
Aux Heating Activation Threshold
This is an adjustment to hasten or delay the aux heat activation. This adjusts
how far below the set point the temperature must fall with the HP at 100%
before allowing electric heat to come on.
Range is 0 - 10°F with increments of 0.25°F. The default setting is 2.5°F.
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.
S
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.
S
Comfort - This is when the system could automatically stage up or down
based on the current load demand.
Modulating Cooling Steady State PI Gain
(XP20, XC20, XP25 and XC25 only)
Steady state gain controls the demand when the system is not responding to
a sensed temperature change away from the iComfort
are less aggressive, standard and more aggressive Default is standard.
Modulating Cooling Step Change PI Gain
(XP20, XC20, XP25 and XC25 only)
Step change gains deal with set point changes and affects how fast the system
reaches the next set point.
®
S30. (This governs how many cycles
Cooling mode
®
S30 setting. Options
Options are less aggressive, standard and more aggressive Default is
standard.
Modulating Cooling Cycles Per Hour
(XP20, XC20, XP25 and XC25 only)
This feature is activated when the structure BTU load is less than the minimum
Heat Pump cooling capacity of the outdoor unit. The system will be cycled "ON"
and "OFF" at the selected cycles per hour to maintain the settings of the
®
iComfort S30. (This governs how many cycles per hour the system will try to
run when it needs to run at less than minimum capacity).
Range is 3 to 6 cycles hours. Can be adjusted in increments of 0.5. Default is
4.
Temperature Control mode (Feels Like™)
Options are Normal and Comfort. Default is Normal. 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.
S
Normal - This setting cools or heats the home to the desired temperature
setting (feels-like) is OFF.
S
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.
Single Setpoint Mode
(Non-Zoning System Only)
On the user screens this is referred to as Perfect Temp (Temperature). Options
are enabled or disabled. Default is disabled. The Single Set Point (SSP)
algorithm allows the user the set only one temperature set point value rather
than one value for heating and a different value for cooling. When zoning is
present, the following SSP settings are not available. When enabled the
following parameters are automatically configured for optimal settings.
PARAMETERS
SSP HEATING CANCEL COAST COUNTER
INCREMENT SLOPE
SSP HEATING CANCEL COAST COUNTER
DECREMENT SLOPE
SSP COOLING CANCEL COAST COUNTER
INCREMENT SLOPE
SSP COOLING CANCEL COAST COUNTER
DECREMENT SLOPE
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DESCRIPTIONS
Range is 0 to 0.75°F. Default is 0.25°F. Adjust­
ments are in increments of 0.12°F
Range is 0.25 to 2°F. Default is 0.5°F. Adjust­
ments are in increments of 0.12°F
Range is 0.75 to 0°F. Default is 0.25°F. Adjust­
ments are in increments of 0.12°F.
Range is -2 to 0.25°F. Default is 0.5°F. Adjust­
ments are in increments of 0.12°F.