Variable Speed Scroll Compressor - Daikin MicroTech III Operation Manuals

Variable Speed Scroll Compressor

The compressor must only be used for its designed
purpose(s) and within its scope of application (refer
to the Operating Limits) . Consult the Application
Guidelines . Under all circumstances, the EN378 (or
other applicable local safety regulations) requirements
must be fulfilled .
Daikin units with variable speed inverter compressor are
engineered with fixed speed compressor(s) in such a way
that the unit delivers only the required energy to satisfy space
conditions and provides you with exceptional energy savings .
It improves comfort through precise temperature and humidity
control. Variable speed compressor enhances energy efficiency
and capable of providing unit capacity modulation down to 20%
and reduces compressor cycling and wear on compressor .
Daikin rooftop units with variable speed Inverter compressors
are provided with Internal Permanent Magnet (IPM) motors .
Compressors are designed to vary capacity by modulating
the speed of the scroll set . The speed ratio for the IPM motor
compressor is 4:1 (25 rps to 100 rps) . Condenser fans staging
and an oil management/monitoring system are provided for
reliable operation . The VFD compressor will always be on the
"lead" circuit and will be the first one ON and last one OFF.
OM 920-6 • MICROTECH UNIT CONTROLLER
WARNING
Figure 22: Compressor Nameplate Information
A . Model number
B . Serial number
C . Refrigerant
D .
Supply voltage to CDS303 frequency converter
E . Housing service pressure
F . Factory charged lubrication
G . Compressor frequency and MaxMust trip current
Figure 23: Compressor Components
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