Lennox Core Unit Controller

61
Table 12. CORE Control System Unit Parameters
Control
Parameter
No
Screen Name
Parameter Short
Description
Control Value
Units Description
Min. Default Max.
169
FAT AUTO
CHGOVR DLY
Fresh Air
Tempering
Automatic
Changeover
Delay
15 30 120 Minutes
Fresh Air Heating Control or Fresh Air
Cooling Control air Tempering auto-
changeover delay.
170
FRESH AIR
COOL SP
See CORE System Application Guide for further details and to change the fresh air cool (FAC) set point. Modify the
set point only using the method described in the reference section.
171
FAC STAGE
DEADBAND
Fresh Air Cooling
Control Deadband
3 10 15 °F Fresh Air Cooling stage dead-band.
172
FAC MIN CYCLE
TIME
Fresh Air Cooling
Control Cycle
Time
120 480 1800 Seconds Fresh Air Cooling minimum cycle time.
173
FAC STAGE
DIFFER
Fresh Air Cooling
Control Stage
Differential
0 2 20 °F
• Fresh Air Cooling stage differential
between stages.
• Setto0forrststagecoolingonly
for Fresh Air Cooling.
174
DACH OCC
SETPOINT
Discharge Air
Control Heating
Occupied Set
Point
60 110 140 °F
Discharge Air Control Heating set point
during occupied period.
175
DACH UNOCC
SETPOINT
Discharge Air
Control Heating
Unoccupied Set
Point
60 95 140 °F
Discharge Air Control Heating set point
during unoccupied period.
176
DACH STAGE
DEADBAND
Discharge Air
Control Heating
Stage Deadband
5 5 20 °F Discharge Air Control Heating dead-band.
177
DACH FAH STG
UP TMR
Discharge Air
Control Heating
Stage-Up Time
Delay
0 180 900 Seconds
Discharge Air Control Heating and Fresh
Air Heating stage-up time delay.
178
DACH FAH STG
DN TMR
Discharge Air
Control Heating
and Fresh Air
Heating Control
Stage-Down Time
Delay
0 120 600 Seconds
Discharge Air Control Heating and Fresh
Air Heating stage-down time delay.
179
DACH STAGE
DIFFER
Discharge Air
Control Heating
Stage Differential
2 2 20 °F
Discharge Air Control Heating stage
differential
180
DACC OCC
SETPOINT
Discharge Air
Control Cooling
Occupied Set
Point
40 55 80 °F
Discharge Air Control Cooling set point
during occupied period.
181
DACC UNOCC
SETPOINT
Discharge Air
Control Cooling
Unoccupied Set
Point
40 65 100 °F
Discharge Air Control Cooling set point
during unoccupied period.
182
DACC STAGE
DEADBAND
Discharge Air
Control Cooling
Deadband Set
Point
5 5 20 °F
Discharge Air Control Cooling stage
dead-band.
183
DACC FAC STG
UP TMR
Discharge Air
Control Cooling
and Fresh Air
Cooling Stage-Up
Delay
0 180 900 Seconds
Discharge Air Control Cooling and Fresh
Air Cooling stage-up delay.
184
DACC FAC STG
DN TMR
Discharge Air
Control Cooling
and Fresh Air
Cooling Stage-
Down Time Delay
0 120 600 Seconds
Discharge Air Control Cooling and Fresh
Air Cooling stage-down time delay.