Components And Operation - Daikin WCT Series Operating & Maintenance Manual

Components and Operation

Figure 1, WCT Major Component Locations
CONDENSER
Circuit 1
EVAPORATOR
Circuit 1
Note: Evaporator nozzles may be side-by-side or over-and-under depending on model.
Dual Circuit, Series Counter-flow Chillers Overview
The WCT chiller has a single evaporator and a condenser. Each evaporator and condenser shell
contains two separate refrigerant circuits for each of the two compressors and economizers on the
chiller. Each circuit is isolated from each other by a welded tube sheet in the middle of the vessel.
They are available in single pass only. Single-pass water flows in evaporator and condenser are
counterflow to each other.
Each of the two separate refrigerant circuits use the vapor compression cycle as shown in Figure 3.
. Figure 2, Series Counterflow Flow Diagram
OMM WCT
COMPRESSOR
Circuit 1
EVAPORATOR
Circuit 2
Centrifugal Chillers
ECONOMIZER
Circuit 1
UNIT MONITOR
CONTROL BOX
D-EOMWC01302-16EN - 6/84
COMPRESSOR
Circuit 2
ECONOMIZER
Circuit 2
CONDENSER
Circuit 2