Lennox Core Unit Controller Setup Manual page 57

Control
Parameter Screen Name
No
ZONE SENS
133
STRTUP DLY
IAQ INPUT
134
MODE
137 OCC HEAT STPT
UNOCC HEAT
138
STPT
OCC COOL
139
STPT
Table 12. CORE Control System Unit Parameters
Parameter Short
Description
Min.
Room Sensor
2
Start-up Delay
Indoor Air Quality
0
Input Mode
System 1 Parameters
Occupied Heating
40
Set Point
Unoccupied
40
Heating Set Point
Occupied Cooling
40
Set Point
Control Value
Default Max.
2 30 Minutes
1 7
Default may
be altered at 95
factory test.
60 95
75 95
57
Units Description
• Suspends all unit operation room
sensor and Constant Air Volume
with bypass damper applications.
• Suspends Fresh Air Heat Control-
Reheat, Fresh Air Cooling Control,
Fresh Air Heat Control options and
all GP outputs.
• May be used to stagger unit start-
ups. Does NOT delay demands in
thermostat mode.
Options are:
• 0 = Ventilation is disabled.
• 1 = Demand control ventilation with
outdoor temperature limit and blower
on. (Default)
• 2 = Demand control ventilation
without Outdoor Temperature Limit
and Blower ON.
• 3 = Demand control ventilation with
Outdoor Temperature Limit and
Option
Blower AUTO / ON.
• 4 = Demand control ventilation
without Outdoor temperature Limit
and no blower AUTO / ON.
• 5 = Outdoor air control with outdoor
temperature limit.
• 6 = Outdoor air control with outdoor
temperature limit
• 7 = Building pressure control
• Backup occupied heating set point.
• Used if the communications link
is lost for 5 minutes between the
M3 and NCP. Used only with room
°F
sensor applications.
• Set point temperature must be less
than or equal to (Parameter 139
minus Parameter 152).
• Backup unoccupied heating set
point. Used if the communications
link is lost for 5 minutes between the
unit controller and NCP.
°F • Used only in room sensor
applications.
• Set point temperature must be less
than or equal to (Parameter 140
minus Parameter 152).
• Backup occupied cooling set point.
• Used if the communications link is
lost for 5 minutes between the unit
controller and NCP. Used only in
°F
room sensor applications.
• Set point temperature must be
greater than or equal to Parameter
137 plus Parameter 152).