Lennox PRODIGY2.0 User Manual

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To use example values, set the following parameters:
 Parameter 205 – Set to 70.0°F
 Parameter 206 – Set to 10.0°F
 Parameter 204 – Set to 10.0°F (this setting enables Discharge Air Control Cooling return air reset).
14.1.3. Discharge Air Control Cooling (DACC) Total Reset Limit
Parameter 207 with a default setting of 10.0°F defines the total Discharge Air Control Cooling set point reset limit. This
total limit is the sum of both return and outdoor Discharge Air Control Cooling resets. This parameter limits total
DACC_SP adjustment band and overrides the adjustment bands for parameter 201 and parameter 204 if necessary.
14.2. Heating
The discharge air control heating option automatically cycles up to four-stages of heating to maintain a discharge air
control heating set point.
 Discharge Air Control Heating option applies to gas/electric and electric /electric units only.
 Refer to figure 16 for Discharge Air Control Heating heating stages.
 Adjust parameter 112 to 1 to enable discharge air control.
IMPORTANT
Discharge air sensor RT6 must be moved to the supply air duct, preferably after a 90 degree branch off of the main
duct.
Discharge Air Control Heating is initiated by an input in one of three ways:
1. W1 input from an external device if M3 unit controller is configured for wired thermostat mode.
Go to SETTINGS > CONTROL > CONTROL TYPE = WIRED THERMOSTAT.
2. Heating demand while in zone sensor mode.
3. Heating demand while in L-Connection room sensor mode.
NOTE: Additional parameters can be set depending on selection choices.
110
111
112
113
114
115
109
108
107
Parameter 174 default is 110.0°F
H1
ON
OFF
110°F + 5°F
Parameter 174 +
Parameter 176
Parameter 175 DACH UNOCC SETPOINT is adjusted
Parameter 177 DACH FAH STG UP TMR 3 minutes
Parameter 178 DACH FAH STG DN TMR 2 minutes
Minimum Off and Run Times Apply
106
105
104
5°F Discharge Air Control
Heating Dead-band
(All Stages Same Setting)
H2
ON
OFF
110°F - 2°F Diff
Parameter 174 -179
ON
OFF
H4
ON
OFF
H3
110°F - (2°F Diff X 2)
110°F - (2°F Diff X 3)
Parameter 174 - ( Parameter 179 X 3)
Parameter 176
Parameter 174 - (Para
meter 179 X 2)
H1=Heating Stage 1
H2=Heating Stage 2
H3=Heating Stage 3
H4=Heating Stage 4
Figure 16. Discharge Air Control Heating Stages - Default Values Shown

Lennox PRODIGY2.0 Specifications

General

Brand	Lennox
Model	PRODIGY2.0
Category	Controller
Language	English