Instruction manual

McQuay OM 920 31
Keypad/Display Menu Structure
Accessing the Extended Menus requires the operator to enter the four-digit Level 4 password,
(2526) using the keypad buttons located on the controller interface.
Unit Setup Menu
RAT Sensor is an adjustable item used to select whether or not the Return Air sensor input
will be used.
100% OA SCU is an adjustable item used to select whether or not a self contained unit will be
configured for 100% outside air operation.
OAT Sensor is an adjustable item used to select whether or not the Outside Air Temperature
sensor input will be used.
MAT Sensor is an adjustable item used to select whether or not the Mixed Air Temperature
sensor input will be used.
Space Sensor is an adjustable item to indicate if a space sensor is connected to the unit
controller.
Eng Units is an adjustable item to indicate if the unit is to display English or Metric units of
measure.
Table 23: Extended Menus
Menu Display Name Item Display Name Default Setting Range Password Level
Extended Menus Unit Setup 4
Timer Settings 4
Time/Date 4
SAF Spd Setup 4
RF/EF Spd Setup 4
Zone Temp Setup 4
Compressor Setup 4
Head Press Setup 4
Chilled Water Setup 4
Economizer Setup 4
Design Flow Setup 4
Heating Setup 4
Dehum Setup 4
Alarm Out Config 4
Alarm Limits 4
Manual Control 4
Table 24: Unit Setup Menu
Menu Display Name Item Display Name Default Setting Range Password Level
Unit Setup RAT Sensor= Yes No 4
Yes
100% OA= No No 4
Yes
OAT Sensor= Yes No 4
Yes
MAT Sensor= Yes No 4
Yes
Space Sensor= Yes No 4
Yes
Eng Units= English SI 4
English