Lennox Prodigy 2.0 Application Manual page 107

Control Parameter
No Screen Name Parameter Short Description
Maximum Stage 3 Cooling Time
103 CL STG 4 STGUP TIME
Before Call for Stage 4 Cooling
104 CL STAGE DOWN TIME Cooling Stage Down Time
105 DEHUMID MODE
106 DEHUMID SETPOINT Dehumidification Setpoint
Dehumidification Dead Band
107 DEHUMID DEADBAND
Free Cooling Low Ambient
108 FREE LO AMB LCKT SP
Table 64. M3 Control Parameters
Min.
0
0
0 - No Humiditrol is
Dehumidification Mode 0
Parameter Label)
Check unit parameter
label as default may
0
be altered at factory
1
(neutral zone)
45.0
Lockout Setpoint
Control Value
Default Max. Units Units
912 3600 Seconds
912 3600 Seconds
installed
6 - All Others 7 Option
(Check Unit
99 % RH
test.
3 10 % RH
55.0 80.0 °F
Description Description
•
Stage 4 stage up timer. The maximum time that cooling stage 3
runs before calling cooling stage 4.
•
Used in room sensor applications.
•
Disabled if set to 0.
•
Time delay before a lower stage turns off following a higher stage
termination.
•
Used in room sensor applications.
Dehumidification Mode
0- No reheat.
1- Supermarket reheat using De-Humidistat (wired thermostat
mode only)
2- Supermarket reheat using relative humidity sensor.
3- Humiditrol reheat. Conditions: Blower must be energized, Must
be occupied, At least one previous cooling demand.
4- Relative Humidity measurement / display. No Supermarket or
Humiditrol reheat.
5- Humiditrol reheat. Conditions: At least one previous cooling
demand.
6- Humiditrol reheat. Conditions: Blower must be energized, Must
be occupied.
7- Humiditrol reheat. Conditions: None
•
Percent relative humidity where supermarket or Humiditrol reheat
demand is energized. Used of dehumid mode option 2, 3, 5, 6 or
7. Dehumidification is de-energized at set point – dead-band
(parameter 107)).
•
Digital Input 4 only. Energized input signal calls for dehumid
demand. L Connection Network Relative Humidity set point
will override this set point. (Such as from NCP).
Used of dehumidification option 2, 3, 5, 6 or 7. Dehumidification is :
•
ON when relative humidity is equal to or greater than Paramet­
er126.
•
OFF when Relative Humidity is less than Parameter126 minus
Parameter107.
When outdoor air is suitable for free cooling and an economizer is
present, the compressor will not run when ambient is below this
value.