Discharge Air Control Heating Total Reset Limit - Lennox Prodigy M2 Application Manual

10.8. Discharge Air Control Heating Total Reset Limit

ECTO 8.08 (default=10) defines the total DACH setpoint reset limit. This total limit is the sum of both return and outdoor DACH
resets. This parameter limits total DACH_SP adjustment band and overrides the adjustment bands for RAT and OAT (ECTO
8.11 & 8.14) if necessary.
Table 32. Discharge Air Heating ECTO Parameters Summary
Control Parameter
No. Name Min.
5.09 HT_Staging 0
6.01 System_Mode 0
DACH_OCP 36
7.10
_SP 140
DACH_UnOCP 36
7.11
_SP 140
7
7.12 DACH_Stg_DB
5
DACH_&_FAH_ 0
7.13
StgUp_Delay 0
DACH_&_FAH_ 0
7.14
StgDn_Delay 0
DACH_Stg_ 3
7.15
Diff 2
DACH_RS_ 7
8.08
Limit 5
DACH_RAT_ 124
8.09
RS_SP. 80
DACH_RAT_
1
8.10 RS_Proportion-
1
al_ Band
DACH_RAT_
0
RS_Adjust_
8.11
0
Band
DACH_OAT_ 113
8.12
RS_SP 60
DACH_OAT_R
1
8.13 S_Proportional_
1
Band.
DACH_OAT_R 0
8.14
S_Adjust_ Band 0
Control Value
Default Max
Units
2 2 Option
0 12 Option
Counts
80 124
110 80 X:DegF
Counts
95 124
X:DegF
100 80
7 30 Counts
5 20 V:DegF
45 225 Counts
180 900 B: Sec.
30 150 Counts
120 600 B: Sec.
3 30 Counts
2 20 V:DegF
15 29 Counts
10 20 V:DegF
Counts
139 169
X:DegF
70 50
15 44 Counts
10 30 V:DegF
0 44 Counts
0 30 V:DegF
144 255 Counts
40 −31 Y:DegF
Counts
31 94
O:DegF
20 60
0 47 Counts
0 30 O:DegF
Description
Heating staging options:
0− No heating operation.
1− Discharge air control with up to 4 stages.
2− Thermostat operation.
System mode of operation.
Control
Value System Mode
0 Local Thermostat
1 Zone Sensor
2 Zone Sensor
3 Zone Sensor
4 Remote Demand
5 Remote Demand
6 Remote Demand
7 Remote Demand
8 Future Use
9 Future Use
10 Future Use
11 Future Use
12 A138 4−Stg. Tstat Interface
Discharge Air Control Heating setpoint during occupied period.
Discharge Air Control Heating setpoint during unoccupied period.
Discharge Air Control Heating deadband.
Discharge Air Control Heating and Fresh Air Heating stage−up time delay.
Discharge Air Control Heating and Fresh Air Heating stage−down time delay.
Discharge Air Control Heating stage differential
Discharge Air Control Heating reset limit. This limits the total DACH reset al-
lowed.
Discharge Air Control Heating return air heating reset setpoint.
Discharge Air Control Heating return air heating reset proportional band.
Discharge Air Control Heating return reset adjustment band.
0 value disables return air heating reset.
Discharge Air Control Heating outdoor temperature reset setpoint.
Discharge Air Control Heating temperature reset proportional band.
Discharge Air Control Heating outdoor temperature reset adjustment band.
0 disables outdoor temperature heating reset
Page 47
10. Discharge Air Control
Backup Mode
None
None
Local Thermostat
Return Air Sensor
None
Local Thermostat
Return Air Sensor
Zone Sensor
None
Local Thermostat
Return Air Sensor
Zone Sensor
None
PRODIGYT M2 UNIT CONTROLLER