Lennox PRODIGY2.0 - Page 121

121
Table 63. M3 Control Parameters
Control Parameter
DescriptionUnits
Control Value
No DescriptionUnitsMax.DefaultMin.
Parameter Short
Description
Screen Name
108
FREE LO AMB LCKT
SP
Free Cooling Low
Ambient Lockout Set
Point
45.0 55.0 80.0 °F
When outdoor air is suitable for
free cooling and an economizer
is present, the compressor will
not run when ambient is below
this value.
109
SMOKE ALARM
CONTROL
Smoke Alarm Control 0 0 13 Option
Smoke alarm control options.
0- Blower off, exhaust fan off
and fresh air damper
closed.
2- Blower off, exhaust fan on
and fresh air damper
closed.
9- Blower on, exhaust fan off
and fresh air damper
opened.
10- Blower on, exhaust fan on
and fresh air damper
closed.
11- Blower on, exhaust fan on
and fresh air damper
opened.
110 ERR TIME OFF DELAY Error Time Off Delay 64 300 1800 Seconds
Off time delay if a “no-run" error
occurs.
111
COOL STAGING
OPTION
Cooling Staging Option 0
Check unit para
meter label as
default may be
altered at fact
ory test.
4 Option
Cooling staging options:
0- No cooling operation
1- Wired thermostat opera
tion, Two cooling stages
and units with Econom
izers
Y1 = Free Cooling,
Y2 = Adds all mechanical
stages.
2- Wired thermostat opera
tion. Two cooling stages
and Units with Econom
izers
Y1=Free Cooling
Y2= adds first stage of
mechanical.
3- Wired thermostat opera
tion. Three cooling stages.
Y1 only = first stage,
Y2 only = second stage,
Y1+Y2 = third stage.
Units with Economizers
Y2 only adds first stage of
mechanical, Y1+Y2 adds
first and second stage of
mechanical.
4- Discharge air control. Up
to four stages.