Lennox iComfort S30 Installation And Setup Manual page 30

Parameter Description
Differential is the temperature between when first stage will cycle ON and cycle OFF. (Example: Zone 1 HD Display is set at 70°F (21°C) with a 1.0°F (0.56°C) differential.
Cooling Demand - cooling will cycle ON when the room temperature reaches 70.5°F (21.4°C) and cycle OFF when the room temperature is 69.5°F (20.8°C).
Zone 1 through
4 First Stage
Range is 0.5 to 3°F (0.28 to 1.67°C). Default is 1°F (0.56°C). Adjustments are in increments of 1°F (0.56°C).
Differential
NOTE: For Lennox Modulating Outdoor Units differentials are ignored.
Minimum and maximum CFM will be dependent on system component configurations. These parameter values are automatically adjusted to the specific hardware config-
uration. See iHarmony zoning system installation instruction for minimum CFMs for specific indoor units.
Zone 1 through
Zones requesting the fan ON are only allowed while no other zone demand is present. The thermostat will sum all the zone continuous blower CFM requirements and
4 Continuous
send the command only after positioning the dampers and waiting for the damper close delay period to expire (30 seconds) Continuous blower demands are the lowest
Blower CFM
priority demands, all other conditioning demands will over-ride the continuous blower demand.
Range is 5 CFM to maximum of indoor unit. Default is dependent on tonnage of indoor unit. Adjustments are in increments of 5 CFM.
Minimum and maximum CFM will be dependent on system component configurations. These parameter values are automatically adjusted to the specific hardware config-
uration. See iHarmony zoning system installation instruction for minimum CFMs for specific indoor units.
Zone 1 through 4
Cooling CFM
Target cooling CFM for a specific zone. Range is 5 CFM to maximum of indoor unit. Default is dependent on tonnage of indoor unit. Adjustments are in increments of 5
CFM.
Minimum and maximum CFM will be dependent on system component configurations. These parameter values are automatically adjusted to the specific hardware config-
uration (See table 9 in iHarmony installation instruction for minimum CFMs for specific indoor units).
Zone 1 through 4
Heating CFM
Target heating CFM for a specific zone. Range is 5 to maximum of indoor unit. Default is dependent on tonnage of indoor unit. Adjustments are in increments of 5 CFM.
Adjustments are in increments of 5 CFM.
This parameter setting compensates for a rapid change of the discharge air temperature due to fast changing conditions. It examines the change in the discharge air
Zoning Anticipated
temperature for the previous two minutes and extrapolates or looks forward by the number of seconds set in the parameter and uses this as the DATS value for staging.
Discharge Air
This parameter setting helps prevent limit trip/frozen coil from occurring.
Temperature
Adjustment
Range is 0 to 120 seconds. Default is 30 seconds. Adjustments are in increments of 5 seconds.
At the end of a gas cycle, the Heat Blower Off-Delay may not be long enough to completely cool the heat exchanger. This may result in a primary limit trip then, or at the
Zoning Gas
beginning of the next heat demand. This parameter allows the blower to run after a gas heat call ends until the discharge air temperature sensor (DATS) cools to the
Heating DAT
temperature set in the parameter. If the temperature is set too low this will cause the temperature in the room to overshoot.
Cooldown Target
Range is 80 to 90°F (26.67 - 32.22°C). Default is 85°F (29.44°C). Adjustments are in increments of 1°F (0.56°C).
Zoning Minimum
Range is 90 to 600 seconds. Default is 120 seconds. Adjustments are in increments of 30 seconds.
Zone Run-Time
Zoning Supply
In cooling mode, this setting sets the discharge air temperature low limit. Below this temperature, the cooling is turned off.
Air Temp Limit
Range is 35 to 45°F (1.67 - 7.22°C). Default is 40°F (4.44°C). Adjustments are in increments of 1°F (0.56°C).
for Cooling
Zoning Supply Air
In heating mode, this setting sets the target discharge air temperature.
Temp Limit for Gas
Range is 100 to 160°F (37.78 to 54.44°C). Default is 140°F (43.33°C). Adjustments are in increments of 5°F (2.78°C).
/ Electric Heating
Zoning Target
In cooling mode, this setting sets the target discharge air temperature.
Supply Air Temp
Range is 40 to 60°F (4.44 - 15.56°C). Default is 45°F (7.22°C). Adjustments are in increments of 1°F (0.56°C).
for Cooling
Zoning Target
In heat pump heating mode, this setting sets the target discharge air temperature.
Supply Air Temp
Range is 85 to 110°F (29.44 to 43.33°C). Default is 90°F (32.22°C). Adjustments are in increments of 1°F (0.56°C).
for HP Heating
Zoning Target
Supply Air Temp
Default is 110°F. Range is 100°F to 130°F with 1 degree increment adjustable. In heating mode, this setting sets the target discharge air temperature.
for Gas/Electric
Heating
Table 4. Smart Hub Parameters
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