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
46 McQuay OM 920
Keypad/Display Menu Structure
CW Valve is an adjustable item used to manually drive the chilled water valve open and
closed.
ECond VFD is an adjustable item which is used to turn on/off the evaporative cooling
condenser fan VFD.
ECFan Spd Cmd is an adjustable item which is used to set the evaporative cooling condenser
fan VFD speed position.
EC Drn Valve is an adjustable item which is used to open/close the evaporative cooling drain
valve.
Sump Pump is an adjustable item which is used to turn on/off the evaporative cooling sump
pump.
Main Gas Vlv is an adjustable item used to manually turn the main gas valve output on/off.
Htg Valve is an adjustable item used to manually drive the modulating heating valve open and
closed.
F&BP Damper is an adjustable item used to manually drive the F&BP damper open and
closed.
Htg Stg 1 is an adjustable item that turns on the first stage of electric heat.
Htg Stg 2 is an adjustable item that turns on the second stage of electric heat.
Htg Stg 3 is an adjustable item that turns on the third stage of electric heat.
Htg Stg 4 is an adjustable item that turns on the fourth stage of electric heat.
Htg Stg 5 is an adjustable item that turns on the fifth stage of electric heat.
Htg Stg 6 is an adjustable item that turns on the sixth stage of electric heat.
Reheat Valve is an adjustable item used to manually drive the reheat valve open and closed.
Reheat Stage is an adjustable item that turns on the staged reheat output.
ERec Wheel is an adjustable item which is used to turn on/off the energy recovery wheel
output.
ERec Whl Cmd is an adjustable item is an adjustable item which is used to set the energy
recovery wheel VFD speed.
ERBP Dmpr Cl is an adjustable item which is used to close the energy recovery bypass
damper.
ERBP Dmpr OP is an adjustable item which is used to open the energy recovery bypass
damper.
Cond Wtr Pump is an adjustable item which is used to turn on/off the condenser water pump
output.
Alm Output is an adjustable item which is used to turn on/off the alarm output.
FanOp is an adjustable item which is used to turn on/off the FanOp output.
Note – When Manual Control is set to Yes, the Control Mode is set to Off so that the unit will not
restart automatically. When Manual Control is set to No all digital outputs in the Manual
Control menu are set to Off and all the analog outputs are set to 0.0% so that all outputs
are in the Off or minimum position when Manual Control is set to Yes.