Lennox iComfort S30 Installation And Setup Manual page 27

Zoning Gas Heating DAT Cooldown Target
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 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 temperature set in the parameter. If the temperature is set
too low this will cause the temperature in the room to overshoot.
Range is 80 to 90°F. Default is 85°F. Adjustments are in increments of 1°F.
Zoning Anticipated Discharge Air Temperature Adjustment
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 temperature for the previous 2 minutes and extrapolates or looks
forward by the number of seconds set in the parameter and uses this as the
DATS value for staging. This parameter setting helps prevent limit trip/frozen
coil from occurring.
Range is 0 to 120 seconds. Default is 30 seconds. Adjustments are in
increments of 5 seconds.
Zoning Target Supply Air Temp for Cooling
In cooling mode, this setting sets the target discharge air temperature.
Range is 40 to 60°F. Default is 45°F. Adjustments are in increments of 1°F.
Zoning Target Supply Air Temp for HP Heating
In heat pump heating mode, this setting sets the target discharge air
temperature.
Range is 85 to 110°F. Default is 90°F. Adjustments are in increments of 1°F.
Zoning Supply Air Temp Limit for Cooling
In cooling mode, this setting sets the discharge air temperature low limit. Below
this temperature, the cooling is turned off.
Range is 35 to 45°F. Default is 40°F. Adjustments are in increments of 1°F.
Zoning Supply Air Temp Limit for Gas / Electric Heating
In heating mode, this setting sets the target discharge air temperature.
Range is 100 to 160°F. Default is 140°F. Adjustments are in increments of 5°F.
HP Heating Lockout Time
The HP could not get a zone to progress 0.5°F towards the set point in 120
minutes (Code 40 - Minor alert). System will switch to secondary heat source.
(Electric heat or furnace in dual fuel applications). Transition back to Heat
Pump normal operation when termination setting times out.
Range is 60 to 240 minutes. Default is 120 minutes. Adjustments are in
increments of 30 minutes.
Zoning Minimum Zone Run-Time
Range is 90 to 600 seconds. Default is 120 seconds. Adjustments are in
increments of 30 seconds.
Zone 1 through 4 First Stage Differential
Differential is the temperature between when first stage will cycle ON and cycle
OFF. (Example: Zone 1 HD Display is set at 70°F with a 1.0°F differential.
Cooling Demand - cooling will cycle ON when the room temperature reaches
70.5°F and cycle OFF when the room temperature is 69.5°F)
Range is 0.5 to 3°F. Default is 1°F. Adjustments are in increments of 1°F.
NOTE - For XC/XP 25 differentials are ignored.
Zone 1 through 4 Continuous Blower CFM
Minimum and maximum CFM will be dependent on system component
configurations. These parameter values are automatically adjusted to the
specific hardware configuration. See iHarmony
instruction for minimum CFMs for specific indoor units.
Zones requesting the fan ON are only allowed while no other zone demand is
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present. The iComfort S30 will sum all the zone continuous blower CFM
requirements and 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 priority demands, all other conditioning
demands will over-ride the continuous blower demand.
Range is 5 to maximum of indoor unit. Default is dependent on tonnage of
indoor unit. Adjustments are in increments of 5 CFM.
Zone 1 through 4 Cooling CFM
Minimum and maximum CFM will be dependent on system component
configurations. These parameter values are automatically adjusted to the
specific hardware configuration. See iHarmony
instruction for minimum CFMs for specific indoor units.
Target cooling 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.
Zone 1 through 4 Heating CFM
Minimum and maximum CFM will be dependent on system component
configurations. These parameter values are automatically adjusted to the
specific hardware configuration (See table 9 in iHarmony installation instruction
for minimum CFMs for specific indoor units).
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.
Reset Smart Hub
Reset Smart Hub (erases Smart Hub settings and restarts installer setup).
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zoning system installation
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zoning system installation