Daikin WGZ030DW Installation, Operation And Maintenance Manual page 52

Water-cooled scroll compressor chillers
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Unit Mode settings can be COOL, COOL w/Glycol, or ICE w/
Glycol, as determined from the Unit Mode set point.
Source settings can be KEYPAD, SWITCHES, or NETWORK
as determined from the Mode Source set point.
SET UNIT SPs
(8)
CLOCK
dd/mmm/yyyy
hh:mm:ss
SET UNIT SPs
(9)
Units = °F/psi
Lang = ENGLISH
Refrig = R410A
Refrigerant type is factory-set.
SET UNIT SPs (10)
Protocol = Modbus
Ident Number=001
Baud Rate=9600
BAS interface settings.
Set Compressor Set points
SET COMP SPs (1)
# of Compressors = X
Stop-Start =XX min
Start-Start =XX min
This menu sets the anti-recycle timers. Stop-Start is the time
required before starting a compressor after it has stopped.
Start-Start is the time required before starting a compressor
after the last time it has started.
It is recommended that the default values of 5 minutes and 15
minutes not be changed.
SET COMP SPs (2)
InterStgUp =XXX sec
InterStgDown= XX sec
Clear Cycle Tmr = NO
InterStageUp is the time delay since the last stage change
before a compressor can stage on, default is 120 sec.
InterStageDn is the time delay since the last stage change
before a compressor can stage off normally (not by an alarm).
Default is 30 sec. It is recommended that these settings not be
changed.
# of Compressors = 4
SET COMP SPs (3)
Comp 1 = Enable
Comp 3 = Enable
IOM 1322-1 • WATER-COOLED SCROLL COMPRESSOR
SET UNIT SPs
(9)
Units = °F/psi
Lang = ENGLISH
Refrig = R134a
# of Compressors = 6
SET COMP SPs (3)
Comp 1 = Enable
Comp 3 = Enable
Comp 5 = Enable
# of Compressors = 4
SET COMP SPs (4)
Comp 2 = Enable
Comp 4 = Enable
# of Compressors = 6
SET COMP SPs (4)
Comp 2 = Enable
Comp 4 = Enable
Comp 6 = Enable
Enable screens #3 and #4 require the manager password to
change.
SET COMP SPs (5)
Expansion Valve
Type = Thermal
WaterCooled=ON
SET ALARM LIMITS (5)
Cond Freeze= XX .X °F
CondFlowProof= XX sec
Set Cooling Tower Control
The MicroTech II controller is capable of controlling cooling
tower water temperature on chillers using water-cooled
condensers. Output wiring connection points are shown on the
field wiring diagrams.
[Water Cooled = Y] - Condenser Pump on with first
Compressor on. Tower fan control is active when the
Tower Control set point is set to Temperature and the
condenser pump is in the RUN state. Staging is based on
Entering Condenser Water Temperature (ECWT). Operation
depends on the following.
Condenser pump state
ECWT OR Lift pressure
Stage up and stage down timer values
Tower set points (Tower Control, Tower Stages, Stage Up
Time, Stage Down Time, Stage Differential,
Stage #1 ON, Stage #2 ON, Stage Down @, Stage Up @)
When the condenser pump starts, the stage up timer shall
start. The first stage shall turn ON when the following
52
Unit Controller
www.DaikinApplied.com

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