Instruction manual
Table Of Contents
- Introduction
- Using the Keypad/Display
- Keypad/Display Menu Structure
- System Summary Menu
- Standard Menus
- System Menu
- Occupancy Menu
- Temperature Menu
- Flow Summary Menu
- Supply Fan Speed Menu
- Return/Exhaust Fan Speed Menu
- Cooling Menu
- Head Pressure Menu
- Evap Condensing Menu
- Economizer Menu
- Min OA Damper Menu
- Heating Menu
- Energy Recovery
- Dehumidification Menu
- Daily Schedule Menu
- One Event Schedule Menu
- Holiday Schedule Menu
- Optimal Start Menu
- Operating Hours Menu
- Extended Menus
- Unit Setup Menu
- Timer Settings Menu
- Time/Date Menu
- Supply Fan Setup Menu
- Return/Exhaust Fan Setup Menu
- Zone Temperature Setup Menu
- Compressor Setup Menu
- Head Pressure Setup Menu
- Chilled Water Setup Menu
- Economizer Setup Menu
- Design Flow Setup Menu
- Heating Setup Menu
- Dehumidification Setup Menu
- Alarm Out Configuration Setup Menu
- Alarm Limits Setup Menu
- Manual Control Menu
- LON/BACnetIP/BACnetMSTP Setup Menu
- Active Alarm Menu
- Alarm Log Menu
- Advanced Menus
- Unit Configuration Setup Menu
- Save/Restore Menu
- Alarm Delays Setup Menu
- Analog Input Status Menu
- Universal I/O Status Menu
- Digital Input Status Menu
- Digital Output Status Menu
- Adv Setup Settings Menu
- Adv Status Parameters Menu
- Alarms
- Operator’s Guide
- Determining Unit State
- Off Operating State
- Start Up Operating State
- Recirculating Operating State
- Heating
- Economizer
- Mechanical Cooling
- Determining Unit Status
- Determining Control Mode
- Determining Cooling Status
- Determining Heat Status
- Determining Economizer Status
- Determining Cooling Capacity
- Determining Heating Capacity
- Determining Supply Air Fan Capacity
- Determining RF/EF Capacity
- Determining Outside Air Damper Position
- Determining Emergency Mode
- Determining Application Mode
- Determining Occupancy Status
- Determining Occupancy Mode
- Determining Occupancy Source
- Unoccupied Operation
- Scheduling
- Temperature Control Configurations
- Heat/Cool Changeover
- Dehumidification
- Energy Recovery
- Outside Air Damper Control
- Outside Air Damper Control, Two Position
- Special Procedures for Units with WRV and More Than Two Circuits.
- Water Pump Control
- Cooling: Multistage
- Cooling: Modulating
- Heating Control
- Modulating
- Min DAT
- Indoor Air Fan - On/Off Control

McQuay OM 920 51
Keypad/Display Menu Structure
Analog Input Status Menu
The Analog Input Status Menu provides diagnostic information to qualified service personnel.
The items listed in this menu will provide current status information of the Units analog
inputs.
Universal I/O Status Menu
The Universal I/O Status Menu provides diagnostic information to qualified service personnel.
The items listed in this menu will provide current status information of the Universal inputs &
outputs.
Table 46: Analog Input Status Menu
Menu Display Name Item Display Name Default Setting Range Password Level
Analog Input Status MCB-AI1= - 0-99999999 2
MCB AI2= - 0-99999999 2
MCB AI3= - 0-99999999 2
Table 47: Universal I/O Status Menu
Menu Display Name Item Display Name Default Setting Range Password Level
Universal I/O Status MCB X1= - 0-9999999 2
MCB X2= - 0-9999999 2
MCB X3= - 0-9999999 2
MCB X4= - 0-9999999 2
MCB X5= - 0-9999999 2
MCB X6= - 0-9999999 2
MCB X7= - 0-9999999 2
MCB X8= - 0-9999999 2
EMA X1= - 0-9999999 2
EMA X2= - 0-9999999 2
EMA X3= - 0-9999999 2
EMA X4= - 0-9999999 2
EMA X5= - 0-9999999 2
EMA X6= - 0-9999999 2
EMA X7= - 0-9999999 2
Universal I/O Status EMA X8= - 0-9999999 2
EMB X1= - 0-9999999 2
EMB X2= - 0-9999999 2
EMB X3= - 0-9999999 2
EMB X4= - 0-9999999 2
EMB X5= - 0-9999999 2
EMB X6= - 0-9999999 2
EMB X7= - 0-9999999 2
EMB X8= - 0-9999999 2
EMC X1= - 0-9999999 2
EMC X2= - 0-9999999 2
EMC X3= - 0-9999999 2
EMC X4= - 0-9999999 2
EMC X5= - 0-9999999 2
EMC X6= - 0-9999999 2
EMC X7= - 0-9999999 2
EMC X8= - 0-9999999 2