Daikin WSC, Инструкция по установке, эксплуатации и обслуживанию

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IOM 1274-3 • CENTRIFUGAL WATER CHILLERS 48 www.DaikinApplied.com
Operation
Figure 54: Settings View - Modes
Table 14: Modes Setpoints
Description Default Range PW Comments
Chiller Model WCF WCF, WMC T
WCF is the general software model for WSC (HSC), WDC, WCC, TSC,
and TDC. Heat Recovery option is enabled on Commission tab shown in
Figure 72 on page 57 .
WCC Enable Disabled (other) Enabled (WCC), Disabled (other) T Will always be Disabled for WSC chillers
Control Source Switches Switches, Local, Network BAS O Sets control source. See “Unit Enabling/Disabling” on page 36 .
Unit Enable OFF OFF, AUTO O
OFF: everything is off. AUTO: evap pump on, comp, cond pump and tower on
as required to meet LWT
Available Modes Cool/Heat
Cool Only, Cool w/ Glycol, Cool/
Ice w/ Glycol, Ice Only w/ Glycol,
Cool/Heat, Heat Only
M See Water Setpoints, Figure 52 , for control temperature targets for each mode
No. of Compressors 1 1 to 2 T WSC models will be set to 1. Any other value will be ignored.
Max Compressors On 2 0 to 8 M Max number of compressors that can be on local pLan chiller network
HATS - Starting Off Off, Chiller, System M High Ambient Tandem Start
Condenser Pump Pump #1 Only
Pump #1 Only, Pump #2 Only,
Auto Lead, #1 Primary, #2
Primary
M
Pump #1 Only, Pump #2 Only, use only these pumps AUTO, balance hours
between #1 and #2 #1 Primary, #2 Primary, if primary fails, use other
Evaporator Pump Pump #1 Only
Pump #1 Only, Pump #2 Only,
Auto Lead, #1 Primary, #2
Primary
M
Pump #1 Only, Pump #2 Only, use only these pumps AUTO, balance hours
between #1 and #2 #1 Primary, #2 Primary, if primary fails, use other
Stage Mode Normal Normal, Hi Eff, Pump, Standby M
Normal - Fixed sequence and /or balance starts/hours.
Hi Eff - Starts compressor on each dual compressor chiller first
Pump - Starts all compressors on one chiller first.
Standby - Use compressor only if another fails.
Stage Sequence 1 0-99 M Sets fixed sequence for compressor staging
Hot Gas Mode RLA Off, Water, RLA T See below
Hot Gas Control Point 20% 20 to 70% T Sets hot gas control point %
Available Modes
In “Switches Control” mode, the choices with the “/” require
the Mode Switch to be closed. The alternate mode to the right
of the “/” will require the mode switch when this mode is the
current operating mode.
“BAS Network Control” mode does not need the mode switch
to run alternate modes.
Heat makes a unit operate as a Templifier unit and Ice makes
the unit run for ice making applications.
Hot Gas (HG) Mode
Water - proportionally opens an HG valve as the ELWT drops
below the ELWT setpoint, it is fully open 0.5°F above shutdown
ELWT.
RLA
- proportionally opens an HG valve as the amps drop
below the HG setpoint, the solenoid valve will open in unison
with the proportional valve. The valve will close as the %RLA
exceeds the setpoint by 5%.