Lennox Core Unit Controller Setup Manual page 69

Control
Parameter Screen Name
No
GP A03 MAX
355
OUPUT
356 GP A03 SOURCE
GP A03 CYCL
357
INTRVL
358 GP D01 MODE
GP D01 SP
359
VOLTS
360 GP D01 SP PPM
GP D01 SP
361
PERCENT
Table 12. CORE Control System Unit Parameters
Parameter Short
Description
Min.
General Purpose
A03 Maximum 0
Output
General Purpose
1
A03 Source
General Purpose
0
A03 Cycle Interval
General Purpose
0
D01 Mode
General Purpose
D01 Set Points 0
Volts
General Purpose
D01 Set Point 21
Parts Per Million
General Purpose
D01 Set Point 0
Percentage
Control Value
Default Max.
100 100
1 3 SOURCE
1 180 Seconds
0 127 Input Source
0 10
996 1996
0 100
69
Units Description
Analog output channel 3 Maximum
%
output.
Source/feedback for the PID loop.
• 1 = Analog input 1 on GP3 A03
• 2 = Analog input 2 on GP3 A03
• 3 = Analog input 3 on GP3 A03
Frequency of execution of PID loop.
GP3 Digital Out Control Mode = X + 32*Y
+ 16*Z
Input Sources X:
• 0 = None.
• 1 = Compressor 1 duty cycle.
(Compressor crankcase heater
function)
> On when outdoor air
temperature is > = Parameter
364 seconds have passed with
compressor 1 off.
> Off when outdoor air
temperature > Parameter 362
+ 3°F (fixed dead-band) or
compressor 1 is turned on.
• 2 = On when Occupied
• 3 = On when blower on.
• 4 = On when heating demand
• 5 = On when cooling demand
• 6 = On when heating or cooling
demand
• 7 = System RH (use Parameter 361)
• 8 = System IAQ (use Parameter
360)
• 9 = System OAT (use Parameter
362)
• 10 = On based on GP3 Temperature
Sensor 1 (use Parameter 362)
• 11 = On based on GP3 Temperature
Sensor 2 (use Parameter 362)
• 12 = On based on GP3 AI1 (use
Parameter 359)
• 13 = On based on GP3 AI2 (use
Parameter 359)
• 14 = On based on GP3 AO1 (use
Parameter 359)
• 15 = On based on GP3 AO2 (use
Parameter 359)
• Algorithm Y for Input Sources 7-15
(see 507242-01, Prodigy Application
Guide for further details).
General Purpose D01 Digital output
Volts
control mode set point.
General Purpose D01 Digital output
PPM
control mode set point.
General Purpose D01 Digital output
%
control mode set point.