Lennox Core Unit Controller Setup Manual page 64

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