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

16 McQuay OM 920
Keypad/Display Menu Structure
Occupancy Menu
Menus in the Occupancy menu contain status and control items that relate to unit
occupied/unoccupied operation.
Occupancy is a status only item which indicates whether the unit is currently in an occupied,
unoccupied, or tenant override mode of operation.
OccMode is an adjustable item which allows the unit to be set for manual occupied or
unoccupied operation, automatic operation based on a time schedule input or manual bypass
operation.
OccSrc is a status only item which indicates the input source or function that is responsible for
setting the Occupancy parameter to “Occ.”
UnoccSrc is a status only item which indicates the input source or function that is responsible
for setting the Occupancy parameter to “Unocc.”
Tnt Ovrd Time is an adjustable item which indicates the amount of time remaining for unit
operation since tenant override operation was activated.
Table 5: Occupancy Menu
Menu Display Name Item Display Name Default Setting Range Password Level
Occupancy Occupancy= Occ 6
Unocc
TntOvrd
Occ Mode= Auto Occ 6
Unocc
TntOvrd
Auto
OccSrc= - None 6
NetSchd
IntSchd
OneEvnt
RemoteSw
OccManCmd
OccMode
TStatTO
ManTO
UnoccSrc= - UnoccDehum 6
UnoccClg
UnoccHtg
IntOptStrt
NetOptStrt
None
Tnt Ovrde Time= 0 0-300min 6