McQuay AGZ 010BS - SET UNIT SPs (2); SET UNIT SPs (3); SET UNIT SPs (4); SET UNIT SPs (5)

56 AGZ 010B through 034B IOMM AGZB1
SET UNIT SPs (2)
Available Modes
=COOL w/Glycol
Set w/ FP Switch Off
Available Modes settings can be COOL, COOL w/Glycol, ICE w/Glycol, or TEST as
selected from the available modes imbedded in the menu. The 4
th
line is a reminder that the
ON/OFF switch on the front panel (FP) must be in the OFF position before the MODE can
be changed. This prevents a mode change while the unit is operating.
SE
T UNIT SPs (3)
Evap LWT = XX.X°
°°
°F
Ice LWT = XX.X°
°°
°F
EvapDeltaT= XX.X°
°°
°F
SET UNIT SPs (4)
StartDelta= XX.X°
°°
°F
StopDelta= XX.X°
°°
°F
Staging
StartDelta is the number of degrees above the temperature setting that determines when the
lead compressor starts. Compressor start and stop is determined by the control band and
StartDelta settings. The control band is automatically set of 60% of the EvapDeltaT
(chilled water temperature in minus chilled water temperature out) selected in menu 3
above. The staging routine has been changes in this software version compared to previous
versions. See page 39 for more details and an example.
For a warm start-up the lead compressor will start at any temperature above the start
temperature. The lag will start after the start interval has timed out. The chilled water
temperature will begin to be pulled down. At shut down temperature, the lag compressor
will shut off. If the temperature climbs above that temperature within the StageDownTimer
setting (default at 30 sec.), the lead compressor will remain on. This would be normal
operation. If for some reason the temperature does not rise, the lead compressor will also
shut off.
SET UNIT SPs (5)
Max Pulldn=X.X°
°°
°F/min
Evap Recirc= XXX sec
LowAmbLock= XX.X °
°°
°F
SET UNIT SPs (6)
Ice Time Delay=XXhrs
Clear Ice Delay=No