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Chiller/Heater and Description
Chiller/Heater Scope
This manual provides relevant data to properly operate,
maintain, and troubleshoot the Trane PolyTherm
Simultaneous chiller/heater. Operator and maintenance
personnel must be a qualified refrigeration technician and
have a working knowledge of high voltage systems, low
voltage control circuits, and components and functions.
Chiller/Heater Capacities
The PolyTherm chiller/heater model is available in 30-,
40-, 50-, and 60-ton capacity modules. Up to 10 modules
may connect together in a standard master/slave control
arrangement. Simultaneous heating and cooling modules
are equipped with single point power supply connection
to a central distribution block inside an electrical power
distribution panel and incorporates circuit breaker
overload protection for each PolyTherm module. It is
important to connect modules in the correct sequence as
detailed in Handling of the Modules section of the
Installation Mechanical chapter.
Tandem Compressors
Evaporators, Condensers and Source/Sink
Heat Exchanger
Each single circuit, brazed plate evaporator, condenser
and source/sink heat exchanger is constructed of 316
stainless steel plates and copper brazing and insulated
with closed cell insulation. The fluid piping in each module
uses an electronic two-way valve for selecting geothermal
fluid or load hot or cold fluid depending on the building
heating or cooling demands.
The return fluid piping from each evaporator and
condenser includes an electronic valve for servicing each
module individually while the remaining modules
ARTC-SVX005A-EN
The tandem compressor set to have advanced technology for protection,
diagnostics, communication, and verification of their performance. Technicians can
make faster, more accurate, decisions resulting in improved compressor
performance and reliability.
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is present
with a voltmeter.
The water-source modular simultaneous heating and
cooling system consists of individual modules that are
assembled on site. Each PolyTherm module is factory
wired and tested prior to shipment. Each module includes
a compressor, a brazed plate evaporator, a brazed plate
condenser, a source/sink brazed plate heat exchanger, and
controls. The controls operate as a distributed master
control system that allows each slave microprocessor to
operate its own temperature sensors if the master
microprocessor fails.
Component Description
Every chiller/heater is comprised of four basic
components: compressor, condenser, expansion valve,
and evaporator.Each PolyTherm Chiller/Heater module
contains one or more of these primary refrigeration
components.
continue to operate, to allow for variable flow and, on each
condenser and source/sink heat exchanger operating as a
condenser, to control head pressure. The fluid
connections to each heat exchanger use roll grooved
couplings for service convenience and ease of installation.
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