Lennox Core Unit Controller

56
Table 12. CORE Control System Unit Parameters
Control
Parameter
No
Screen Name
Parameter Short
Description
Control Value
Units Description
Min. Default Max.
115
HEAT RET AIR
LIMIT
Heating Return
Air Limit
60 85 100 °F
• Return air limit for heating. If
the return air heating limit is
exceeded, the heating demands are
interrupted.
• Parameter 113 must be set to 1 to
enable.
117
DCV MAX
DAMPER OPEN
Demand Control
Ventilation
Maximum
Damper Open
0 50 100 %
Maximum allowed demand control
ventilation damper open position.
118
DCV DAMP
START OPEN
Demand Control
Ventilation
Damper Start
Open
0 700 2000 PPM
• Damper “start open” CO
2
set point
for Demand Control Ventilation.
• Level where fresh air damper begins
to open.
119
DCV DAMP FULL
OPEN
Demand Control
Ventilation
Maximum
Damper Full
Open Set Point
0 1200 2000 PPM
• Damper “full open” CO
2
set point for
Demand Control Ventilation.
• Level where fresh air damper is
opened to maximum.
120
DCV HI TMP OV
FL CL
Demand Control
Ventilation
Outdoor Air
Control Hi
Temperature
Override Full
Closed
-31 105 132 °F
High outdoor air temp. where fresh air
damper is closed to minimum position.
121
DCV HI TMP OV
ST CL
Demand Control
Ventilation
Outdoor Air
Control Hi
Temperature
Override Start
Closing
-31 75 132 °F
High outdoor air temperature where fresh
air damper begins to close.
122
DCV LO TMP OV
FL CL
Demand Control
Ventilation
Outdoor Air
Control Low
Temperature
Override Full
Closed
-31 10 132 °F
Low outdoor air temperature where fresh
air damper is closed to minimum position
123
DCV LO TMP OV
ST CL
Demand Control
Ventilation
Outdoor Air
Control Low
Temperature
Override Start
Closing
-31 40 132 °F
Low outdoor air temp. where fresh air
damper begins to close.
127
OAC MANUAL
RESET
Outdoor Air
Control Manual
Reset
0 50 100 % Manual reset value.
128
OAC PID P
CONSTANT
Outdoor Air
Control PID P
Constant
0 2 127 Counts Outdoor Air Control PID P Constant
129
OAC PID I
CONSTANT
Outdoor Air
Control PID I
Constant
0 30 127 Counts Outdoor Air Control PID I Constant
130
OAC PID D
CONSTANT
Outdoor Air
Control PID D
Constant
0 0 127 Counts Outdoor Air Control PID D Constant
131
FREE CL MAX
DAMPER
Free Cooling
Maximum
Damper
0 100 100 %
The maximum allowed fresh air damper
opening for free cooling.
132
MIN DAMPER
POSITION
Minimum Damper
Position
0 0 100 %
Minimum fresh air damper position during
occupied operation.