Lennox Core Unit Controller

50
Table 12. CORE Control System Unit Parameters
Control
Parameter
No
Screen Name
Parameter Short
Description
Control Value
Units Description
Min. Default Max.
30
PWREXH STG2
MIN BLR
Power Exhaust
Stage 2 Minimum
Blower
0 70 100 % Power Exhaust Stage 2 Minimum Blower
31
SUPPLY PID P
CONST
Supply
Proportional
Base Control
Loop for Variable
Air Volume or
Constant Air
Volume with
Bypass Damper
0 17 127 Counts
Variable Air Volume or Constant Air
Volume with Bypass Damper supply PID
Proportional constant.
32
SUPPLY PID I
CONST
Supply Integral
Base Control
Loop for Variable
Air Volume or
Constant Air
Volume with
Bypass Damper
0 12 127 Counts
Variable Air Volume or Constant Air
Volume with Bypass Damper supply PID
Integral constant.
33
SUPPLY PID D
CONST
Supply Derivative
Base Control
Loop for Variable
Air Volume or
Constant Air
Volume with
Bypass Damper
0 0 127 Counts
Variable Air Volume or Constant Air
Volume with Bypass Damper supply PID
derivative constant.
34
BLR STC PRESS
SMK SP
Constant Air
Volume with
Bypass Damper
Static Pressure
Set Point During
Smoke Alarm
0 1 5 w.c.
Constant air volume with bypass damper
static pressure set point during smoke
alarm.
35
BLR STC PRES
VT SP
Constant Air
Volume with
Bypass Damper
Static Pressure
Set Point for
Ventilation
0 1 5 w.c.
Constant air volume with bypass damper
static pressure set point for ventilation.
36
BLR STC PRES
HT SP
Constant Air
Volume with
Bypass Damper
Static Pressure
Set Point for
Heating
0 1 5 w.c.
Constant air volume with bypass damper
static pressure set point for heating
37
BLR STC PRES
CL SP
Constant Air
Volume with
Bypass Damper
Static Pressure
Set Point for
Cooling
0 1 5 w.c.
Constant air volume with bypass damper
static pressure set point for cooling
38
MIN OUTPT CL
VT SMK
Constant Air
Volume with
Bypass Damper
Minimum Output
Percentage Set
Point for Cooling,
Ventilation and
Smoke Alarms
20 20 100 %
• Constant air volume with bypass
damper minimum output for cooling,
ventilation and during smoke alarms.
This sets the minimum air delivered.
• Bypass damper motor is set to 10 to
2 volts with 10 volts being closed.
• 20% setting = 2 volts or damper
completely opened.
39
MIN OUTPUT
HEAT
Constant Air
Volume with
Bypass Damper
Minimum Output
Percentage Set
Point for Heating
20 20 100 %
• Constant air volume with bypass
damper minimum output for heating.
• This sets the minimum air delivered.
• Bypass damper motor is set to 10 to
2 volts with 10 volts being closed.
• 20% setting = 2 volts or damper
completely opened.