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12 McQuay OM 920-1
Keypad/Display Menu Structure
System Summary Menu
Menus in the System Summary category contain basic unit operating status and control set
point parameters. The items shown in the System Summary Menu are Read Only and are not
adjustable from this menu. The following are brief descriptions of the System Summary
category menus and items. No password is required to view the System Summary Menu.
Unit State is a status only item which indicates the state of operation in which the unit is
currently operating. The unit can be in any of the operating states shown.
Clg Capacity is a status only item which indicates the percentage of the unit maximum
cooling capacity currently operating.
OAD/Econo Cap is a status only item which indicates the percentage that the outdoor damper
or economizer valve is currently open.
Htg Capacity is a status only item which indicates the percentage of the unit maximum
heating capacity currently operating.
Reheat Cap is a status only item which indicates the percentage of the unit maximum reheat
capacity currently operating.
Control Temp is a status only item which displays the current value of the “Control
Temperature.” The “Control Temperature” is defined as the temperature input selected by the
Control Temperature Source parameter. For example, if the Control Temperature Source
parameter is set to “Return,” then the Control Temperature parameter reads the same value as
the Return Air parameter.
Zone Clg Spt is a status only item which indicates the temperature in which the unit will go
into the cooling mode of operation.
Zone Htg Spt is a status only item which indicates the temperature in which the unit will go
into the heating mode of operation.
Table 2: System Summary Menu
Menu Display Name
Default
Setting
Range
Password
Level
Unit State= - Off None
Start
Recirc
FanOnly
MinDAT
Htg
Econo
Clg
Clg Capacity= - 0-100% None
OAD/Econo Cap= - 0-100% None
Htg Capacity= - 0-100% None
Reheat Cap= - 0-100% None
Control Temp= - -50.0-200.0°F None
Zone Clg Spt= - 0.0-100.0°F None
Zone Htg Spt= - 0.0-100.0°F None
Disch Air= - -50.0-250.0°F None
DAT Clg Spt= - 40.0-100.0°F None
DAT Htg Spt= - 40.0-140.0°F None
Min DAT Limit= - 0.0-70.0°F None
SAF Speed= - 0-100% None
DSP - 0.2-4.0in None
DuctSP Spt= - 0.2-4.0in None
RF/EF Speed= - 0-100% None
BSP - -0.25-0.25in None
BldgSP Spt= - -0.25-0.25in None
OA Temp= - -50.0-200.0°F None
EW Temp= - -50.0-150.0°F None
Rel Humidity= - 0-100% None