Instruction manual

OM 751 Page 31 of 32
Configuration Parameter Name Abr. Notes Default
LUI Menu
Item 
Secondary Cool Integral Time 600 sec
Discharge Air Temp Proportional Band 13.5
O
F (7.5
O
C)
Discharge Air Temp Integral Time 900 sec
CO
2
Proportional Band

100 PPM
CO
2
Integral Time

600 sec
Ventilation Cooling Low Limit Setpoint VCLL discharge air low limit during ventilation or economizer cooling 54
O
F (12
O
C)
Mechanical Cooling Low Limit Setpoint MCLL discharge air low limit during mechanical (compressor) cooling 45
O
F (7
O
C)
Discharge Air High Limit DAHL 140
O
F (60
O
C)
Space Fan Off Delay 30 sec
Fan Cycling Configuration
space fan operation during occupied, standby and bypass
2
occupancy modes: 2 = continuous, 3 = cycle
Space Fan Speed Changes Per Hour
example: 6/60min = 10min (maximum of 1 fan speed change
6
every 10min when fan in auto)
Space Fan Run Time Reset
reset total run time: 1 = reset (you must return the variable
0
back to 0 after reset)
Compressor Run Time Reset
reset total run time: 1 = reset (you must return the variable
0
back to 0 after reset)
Compressor Enable 0 = disable, 1 = enable 1
Compressor Minimum On Time 180 sec
Compressor Minimum Off Time 180 sec
Compressor Cooling Lockout Setpoint CCLO OA temperature below which compressor cooling is not allowed 61
O
F (16
O
C)
Compressor Envelope Cool Max In 68
O
F (20
O
C)
Compressor Envelope Cool Min In 28
O
F (-2.2
O
C)
Compressor Envelope Cool Max Out 150
O
F (65.6
O
C)
Compressor Envelope Cool Min Out 50
O
F (10.0
O
C)
Compressor Envelope Cool Max Ratio 0.56
Compressor Envelope Cool Max Offset 30
O
F (-1.16
O
C)
Compressor Envelope Cool Min Ratio 0.0
Compressor Envelope Cool Min Offset 28
O
F (-2.2
O
C)
Auxiliary Heat Start Differential AHSD degrees below effective heating setpoint where auxiliary heat starts 2
O
F (1
O
C)
Auxiliary Heat End Differential AHED degrees above auxiliary heat start point where auxiliary heat ends 2
O
F (1
O
C)
Auxiliary Heat Configuration
0 = normally open heat device (hot water valve, etc.), 1 = normally
0
closed heat device (electric heat, etc.)
Space Humidity Sensor Enable
0 = disable, 1 = enable (this variable will be factory set to 1 when
0
the unit is ordered with optional humidity sensor)
Outdoor Humidity Sensor Enable
0 = disable, 1 = enable (this variable will be factory set to 1 when
0
the unit is ordered with optional humidity sensor)
OAD Stroke Time 90 sec
used on split-system units only to partially disable the compressor
envelope by setting the outside DX coil temperature to a fixed valid
Split-System OA/DX Coil Temp
value, enter 122
O
F (50
O
C) on split-systems, use 327.67 for
327.67
self-contained units (327.67 = invalid)
Application Name and Version Label
adjust the compressor delay used to prevent multiple compressorized
Compressor Start Delay units from starting simultaneously (each unit or group of units should 0 sec
have a different delay setting)
Outdoor Fan On Delay 10 sec
 Indicates parameters accessible through the LUI.
 Requires optional equipment.
Table 26. UVC Configuration Parameters (Continued)