Instruction manual

McQuay OM 920 43
Keypad/Display Menu Structure
Alarm Limits Setup Menu
The Alarm Limits menu is used to set the limits of the discharge air temperature sensor and the
return air temperature sensor.
Hi Disch Alm is an adjustable item that sets the high temperature limit for the DAT sensor.
When the discharge air temperature sensor reaches this set point the unit will go into the high
discharge air alarm.
Lo Disch Alm is an adjustable item that sets the low temperature limit for the DAT sensor.
When the discharge air temperature sensor reaches this set point the unit will go into the low
discharge air alarm.
Hi Return Alm= is an adjustable item that sets the high temperature limit for the return air
temperature. When the RAT sensor reaches this set point the unit will go into the high return
air temperature alarm.
Table 38: Alarm Limits Setup Menu
Menu Display Name Item Display Name Default Setting Range Password Level
Alarm Limits Hi Disch Temp= 170°F 90-250°F 4
Lo Disch Temp= 40°F -50-50°F 4
Hi Return Temp= 120°F 90-150°F 4