Lennox Prodigy 2.0 Application Manual page 106

Control Parameter
No Screen Name Parameter Short Description
Low Ambient Outdoor Air Limit
84 LAC SP TEMP 2
Low Ambient Temperature
85 COMP1 LO TMP LCKOUT
Lockout for Compressor 1
Low Ambient Temperature
86 COMP2 LO TMP LCKOUT
Lockout for Compressor 2
Low Ambient Temperature
87 COMP3 LO TMP LCKOUT
Lockout for Compressor 3
Low Ambient Temperature
88 COMP4 LO TMP LCKOUT
Lockout for Compressor 4
89 COMP MIN OFF DELAY Compressor Minimum Off Delay
91 COMP MIN RUN TIME Compressor Minimum Run Time
Maximum High Pressure
98 MAX HP OCCURRENCES
99 MAX LP OCCURRENCES
Low Pressure Switch Ignore
100 LP SW IGNORE TIME
Maximum Stage 1 Cooling Time
101 CL STG 2 STGUP TIME
Before Call for Stage 2 Cooling
Maximum Stage 2 Cooling Time
102 CL STG 3 STGUP TIME
Before Call for Stage 3 Cooling
Table 64. M3 Control Parameters
Min.
10.0
Temperature 2 Setpoint
Check unit parameter
label as default may
-31.0
be altered at factory
Check unit parameter
label as default may
-31.0
be altered at factory
-31.0
-31.0
60
60
1
Occurrences
Maximum Low Pressure
1
Occurrences
0
Time
0
0
Control Value
Default Max. Units Units
55.0 60.0 ºF
80.0 ºF
test.
80.0 ºF
test.
0.0 80.0 ºF
0.0 80.0 ºF
300 510 Seconds
240 510 Seconds
3 8 Occurrences
3 8 Occurrences
120 600 Seconds
912 3600 Seconds
912 3600 Seconds
Description Description
•
Low ambient outdoor air limit temp. 2. Parameters 83 and 84 are
used to shed fans.
•
See Operation section.
•
Temperature setting must be greater than or equal to Parameter
83.
•
Low ambient lockout for compressor 1.
•
A value of (-31°F) will disable low ambient lockout function.
•
Temperature setting must be less than or equal to Parameter 86.
•
Low ambient lockout for compressor 2.
•
A value of (-31F) will disable low ambient lockout function.
•
Temperature setting must be greater than or equal to Parameter
85 and less than or equal to Parameter 87.
•
Low ambient lockout for compressor 3.
•
A value of (-31F) will disable low ambient lockout function.
•
Temperature setting must be greater than or equal to Parameter
86 and less than or equal to Parameter 88.
•
Low ambient lockout for compressor 4.
•
A value of (-31F) will disable low ambient lockout function.
•
Temperature setting must be greater than or equal to Parameter
87
Compressor minimum off delay.
Compressor minimum run time.
Maximum High Pressure occurrences that are stored before control
locks off compressor stage and energizes the service output.
Maximum Low Pressure occurrences that are stored before control
locks off compressor stage and energizes the service relay.
Low Pressure Switch Ignore Time
•
Stage 2 stage up timer. The maximum time that cooling stage 1
runs before calling cooling stage 2.
•
Used in room sensor applications.
•
Disabled if set to 0.
•
Stage 3 stage up timer. The maximum time that cooling stage 2
runs before calling cooling stage 3.
•
Used in room sensor applications.
•
Disabled if set to 0.