Lennox Prodigy M2 Application Manual page 22

Table 18. 1−Compressor Humiditrol Default Operation (using 2−stage Thermostat or Zone Sensor)
Demands
X X X
X X X X
1st X
1st X X
1st X X
1st X X X
2nd X
2nd X X X
2nd X X
2nd X X X
Free cooling operation is only available on units equipped with an economizer. Default dehumidification demand = RH (A91) > 60% (RH setpoint
ECTO 4.25). Optional dehumidification demand = P299−8 energized if ECTO 4.25 is set to 100 (digital demand). Heating demand overrides reheat.
Table 19. 2−Compressor Humiditrol Default Operation (using 2−stage Thermostat or Zone Sensor)
Demands
X
X X
1st 1st
1st 1st X X
1st 1st X
1st 1st X X
2nd 2nd
2nd 2nd X X
2nd 2nd X
2nd 2nd X X
N/A 3rd
N/A 3rd X X
N/A 3rd X
N/A 3rd X X
Free cooling operation is only available on units equipped with an economizer. Default dehumidification demand = RH (A91) > 60% (RH setpoint
ECTO 4.25). Optional dehumidification demand = P299−8 energized if ECTO 4.25 is set to 100 (digital demand). Heating demand overrides reheat.
506457−01 05/10
Summary
Idle.
CP1 Reheat (Reheat Stage 1)
CP1 Reheat (Reheat Stage 1)
CP1 Cool
Free Cool
CP1 Cool
CP1 Cool
CP1 Cool
Free Cool, CP1 Cool
CP1 Cool
CP1 Cool
Summary
Idle.
X X CP1 Reheat (Reheat Stage 1)
X X CP1 Reheat (Reheat Stage 1)
X CP1 Cool
X Free Cool
X X X CP1 Reheat, CP2 Cool (Reheat Stage 2)
X X X CP1 Reheat, CP2 Cool (Reheat Stage 2)
X X CP1 Cool, CP2 Cool
X Free Cool, CP1 Cool
X X CP1 Cool, CP2 Cool
X X CP1 Cool, CP2 Cool
X X CP1 Cool, CP2 Cool
X X Free Cool, CP1 Cool, CP2 Cool
X X CP1 Cool, CP2 Cool
X X CP1 Cool, CP2 Cool
Unit Operation
Unit Operation
Page 22
6. Reheat Operation