Shutdown Alarms; Agz 026B Through 130B - McQuay AGZXXXBS Series Installation, Operation And Maintenance Manual

Automatic Adjusted Ranges
The following are setpoints that will be limited based on the option selected.

Shutdown Alarms

Shutdown alarms (also know as "Stop Alarms" or "Safeties") execute rapid compressor
shutdown and require manual reset. They are also logged in the Alarm Log.
The following table identifies each equipment protection alarm, gives the condition
that causes the alarm to occur, and states the action taken because of the alarm. If the
alarm is auto-clearing, the reset condition is also shown. Otherwise, the alarm is
manually reset, requiring the operator to clear the alarm.
58
Evaporator Leaving Water Temperature
Mode
Unit Mode = Cool
Unit Mode = Cool w/Glycol
Evaporator Freeze Temperature
Mode
Unit Mode = Cool
Unit Mode = Cool w/Glycol,
Ice w/Glycol
Low Evaporator Pressure Hold and Unload
Mode
Unit Mode = Cool
Unit Mode = Cool w/Glycol,
Ice w/Glycol
Low Ambient Lockout Temperature
VFD
VFD = N
VFD = Y
Forced Fan 1,2,3
Number of Fans
4
6
8

AGZ 026B through 130B

Range
40 to 60 ° F
20 to 60 ° F
Range
37 to 42 ° F
18 to 42 ° F
Range
55 to 65 Psig
31 to 65 Psig
Range
35 – 60 ° F
-2 – 60 ° F
Range
1 – 2 fans
1 – 3 fans
1 – 4 fans
IOMM AGZ-5