CIAT AQUACIATPOWER ILD-HE Series, Инструкция по эксплуатации

Страница: 6 / 56

2.1 Control system
AQUACIAT POWER chillers and heat pumps are equipped with
the CONNECT TOUCH control that serves as a user interface
and a configuration tool for controlling the chiller / heat pump
operation.
AQUACIAT
POWER
LD-ST chillers
and
AQUACIAT
POWER
ILD-ST
heat pumps are typically equipped with fixed speed fans, whereas
AQUACIAT POWER LD-HE chillers and AQUACIAT POWER ILD-HE
heat pumps use variable speed fans which reduce the unit energy
use during occupied and unoccupied periods, provide condensing
and evaporating pressure control and smooth fan start. The system
may also control fixed speed pumps or variable speed pumps with
a hydronic module.
IMPORTANT: The document may refer to optional
components and certain functions, options, or accessories
may not be available for the specific unit. Heating option
applies only to heat pumps and cooling-only units
equipped with a boiler.
2.2 System functionalities
The system controls the start-up of the compressors needed to
maintain the desired heat exchanger entering and leaving water
temperature. It constantly manages the operation of the fans in
order to maintain the correct refrigerant pressure in each circuit
and monitors safety devices that protect the unit against failure
and guarantee its optimal functioning.
2.3 Operating modes
The control may operate in three independent modes:
● Local mode: The unit is controlled by commands from the
user interface.
● Remote mode: The unit is controlled by dry contacts.
● Network mode: The unit is controlled by networks (Proprietary
Protocol). Data communication cable is used to connect the
unit to the proprietary protocol communication bus.
When the control operates autonomously (Local or Remote),
it retains all of its control capabilities but does not offer any
features of the Network.
CAUTION
Emergency stop! The Network emergency stop command
stops the unit regardless of its active operating type.
2.4 CONNECT TOUCH control system
● Allows users to control the unit via the CONNECT TOUCH
user interface.
● Provides web connectivity technology.
● Includes the trending functionality.
● Supports Enhanced Control Management (Connected
Services, Cristo Control, Power Control, Easy/Smart Control)
for multiple chillers/heat pump configuration.
● Provides direct BMS integration capabilities (Modbus RTU,
Modbus TCP/IP, BACnet/IP option or Lon option) .
2 - CONTROL OVERVIEW
AQUACIAT POWER EN-6