Lennox Core Unit Controller

64
Table 12. CORE Control System Unit Parameters
Control
Parameter
No
Screen Name
Parameter Short
Description
Control Value
Units Description
Min. Default Max.
208
DACH OAT RS
ADJ BND
Discharge Air
Control Heating
Outdoor Air
Temperature
Reset Adjustment
Band
0 0 30 °F
Discharge Air Control Heating outdoor
temperature reset adjustment band.
209
DACH OAT RS
ADJ SP
Discharge Air
Control Heating
Reset Adjustment
Set Point
-31 40 60 °F
Discharge Air Control Heating outdoor
temperature reset set point.
210
DACH OAT RS
PRP BND
Discharge Air
Control Heating
Outdoor Air
Temperature
Reset
Proportional Band
1 20 60 °F
Discharge Air Control Heating
temperature reset proportional band.
211
DACH RAT RS
ADJ BND
Discharge Air
Control Heating
Return Air
Temperature
Adjustment Band
0 0 30 °F
Discharge Air Control Heating return
reset adjustment band.
212
DACH RAT RS
ADJ SP
Discharge Air
Control heating
Return Air
Heating Reset
Set Point
50 70 80 °F
Discharge Air Control Heating return air
heating reset set point.
213
DACH RAT RS
PRP BND
Discharge Air
Control Heating
Return Air
Heading Reset
Proportional Band
1 10 30 °F
Discharge Air Control Heating return air
heating reset proportional band.
214 DACH RS LIMIT
Discharge Air
Control Heating
Return Air
Heating Reset
Limit
5 10 20 °F
Discharge Air Control Heating reset limit.
This limits the total DACH reset allowed.
215
EXH FN STG1
DAMP SP
Exhaust Fan
Stage 1 Damper
Set Point
0 50 100 % Exhaust fan stage 1 damper set point.
216
EXH FN STG1
DAMP DB
Exhaust Fan
Stage 1 Damper
Deadband
0
Default may
be altered at
factory test.
100 % Exhaust Fan Stage 1 Damper Deadband
217
EXH FN STG1
PRES SP
or
VFD PE PRES
SP
Stage 1 set point
or
VFD PE set point
-0.5 0.05 0.5 in w.c.
Exhaust Fan Stage 1 Pressure Set Point.
or
VFD Power Exhaust Building Pressure
Set Point.
218
EXH FN STG1
PRES DB
Stage 1
deadband
0 0.02 1 in w.c.
Exhaust Fan Stage 1 Pressure
Deadband.
219
EXH FN STG2
DAMP SP
Exhaust Fan
Stage 2 Damper
Set Point
0 75 100 % Exhaust Fan Stage 2 Damper Set Point
220
EXH FN STG2
DAMP DB
Exhaust Fan
Stage 2 Damper
Deadband
0 10 100 % Exhaust Fan Stage 2 Damper Deadband
221
EXH FN STG2
PRES SP
Stage 2 setpoint -0.5 0.10 0.5 in w.c. Exhaust Fan Stage 2 Pressure Set Point
222
EXH FN STG2
PRES DB
Stage 2
deadband
0 0.05 1 in w.c.
Exhaust Fan Stage 2 Pressure
Deadband.
223
EXH FAN STGUP
DELAY
Exhaust Fan
Stage Up Delay
0 100 300 Seconds Exhaust Fan Stage Up Delay
224
EXH FAN
STGDWN DLAY
Exhaust Fan
Stage Down
Delay
0 100 200 Seconds
Stage 1 off-delay. (Only used for 2 stage
operation)