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Sequence of Operations
This manual describes a typical water-cooled chiller/heater
system with few, if any, optional components or devices
attached:
Description
Simultaneous heating and cooling modules are built for
single point power supply connection to a central
distribution block inside the power distribution panel and
incorporates circuit breaker overload protection for each
module. Electrical supply to each module consists of
flexible conduit from the power distribution panel. No
electrical connection to a module carries the load of only
that module. The electrical supply conduit is factory
assembled and shipped with each module for field
connection into the power distribution panel.
The simultaneous heating and cooling system is designed
to operate in heating mode, cooling mode, or
simultaneous heating and cooling based on the system
demand by opening and closing electronic diverting
valves on the evaporators, condensers and source/sink
heat exchanger.
When in cooling mode, the diverting valves direct the load
chilled fluid to the evaporator and simultaneously direct
the source/sink fluid to the brazed plate heat exchanger
operating as a condenser.
When in heating mode, the diverting valves direct the load
heating fluid to the condenser and the source/sink fluid to
the source/sink brazed plate heat exchanger as refrigerant
has been redirected such that it operates as an evaporator.
When in simultaneous heating and cooling mode, the
diverting valves direct the load heating fluid to the
condenser and the load cooling fluid to the evaporator.
Electronic valves on the brazed plate source/sink heat
exchanger outlet modulate to control refrigeration head
pressure. Electronic valves on the evaporator and
condenser outlet also allow for variable flow.
ARTC-SVX005A-EN
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