OMM WCT
Centrifugal Chillers
D-EOMWC01302-16EN - 4/84
Introduction
CAUTION
It is important that the operator reads this manual to become familiar with the equipment
before attempting to operate the chiller..
NOTE
During the initial startup of the chiller the Daikin technician will be available to answer any
questions and instruct in the proper operating procedures.
This Daikin centrifugal chiller represents a substantial investment and deserves the attention
and care normally given to keep this equipment in good working order. If abnormal or
unusual operating conditions occur, it is recommended that a Daikin service technician be
consulted.
General Description
The Daikin Two-Stage Dual Centrifugal Water Chillers (WCT) are complete, self-contained,
automatically controlled fluid chilling units. Each unit is completely assembled and factory tested
before shipment. These chillers have a separate refrigerant circuit for each compressor. They are
available in single pass arrangement only. They provide the high full load efficiency advantage of
two separate chillers arranged for counterflow operation in a single, compact unit.
The Daikin Model WCT Chillers use 2-stage K compressors and provide cooling capacity from
2200 to 3250 TONS (7750 to 11400 kW) depending on operating conditions in each chiller,
which comes up 4500 to 6400 TONS (15830 to 22500 kW) system capacity when chiller installs
in series counter-flow configuration. In the WCT series, each unit has two compressors and two
economizers connected to a single condenser, and an evaporator. Each condenser and evaporator
has two separate refrigerant circuits. WCT chiller is suitably designed for series counter-flow,
which two WCT unit is connecting in series and work as one chiller.
The driveline of the WCT is made up of two two-stage compressors, each with a gear set and a 2-
pole, induction semi-hermetic motor.
The controls are pre-wired, adjusted and tested. Only normal field connections such as water and
relief valve piping, electrical and interlocks, etc. are required, thereby simplifying installation and
increasing reliability. Most of the necessary equipment protection and operating controls are factory
installed in the control panel.
All Daikin centrifugal chillers must be commissioned at the job site by a factory trained Daikin
authorized technician.
The standard limited warranty on this equipment covers parts that prove defective in material or
workmanship. Specific details of this warranty can be found in the warranty statement furnished
with the equipment.
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