VARIABLE-SPEED WATER-COOLED LIQUID CHILLERS
30XW-V 580-1710
Controls
Remote management (standard)
Touch Pilot control
The 30XWHV also communicates with other building
management systems via optional communication gateways.
A connection terminal allows remote control of the 30XWHV by
wired cable:
-- A digital input allows verification of condenser water
flow (the flow switch must be supplied by the installer).
This function is required to control operation of the
condenser pumps.
-- Start/stop: opening of this contact will shut down the
unit
-- Dual set-point: closing of this contact activates a
second set-point (example: unoccupied mode)
-- Demand limit: closing of this contact limits the
maximum chiller capacity to a predefined value
-- Operation indication: this volt-free contact indicates
that the chiller is operating (cooling load) or that it is
ready to operate (no cooling load)
-- Alarm indication: this volt-free contact indicates the
presence of a major fault that has led to the shutdown of one or several refrigerant circuits.
AIR TREATMENT
■■ New innovative smart control for variable-drive screwcompressor chillers. With the ultimate touch screen interface
the Touch Pilot includes:
-- An intuitive and user-friendly interface. Concise and
clear information is available in local languages.
-- Complete menu, customised for different users (end
user, service personnel or Carrier engineers).
-- Safe operation and unit setting: password protection
ensures that unauthorised people cannot modify any
advanced parameters.
-- General access without password to the most
important operating parameters.
-- Touch Pilot combines intelligence with operating
simplicity. For optimum energy efficiency the control
constantly monitors all machine parameters and
precisely manages the operation of compressors,
electronic expansion devices and of the evaporator and
condenser water pumps.
■■ Energy management
-- Internal time schedule clock: controls chiller on/off
times and operation at a second set-point
-- Set-point reset based on the return water temperature
-- The DCT (Data Collection Tool) records the alarms
history to simplify and facilitate service operations.
Operating limits
Minimum Maximum
Evaporator
Entering temperature at start-up
-
35.0°C
Leaving temperature during operation
3.3°C*
20.0°C
Entering/leaving temperature difference at full load
2.8 K
11.1 K
Entering temperature at start-up
13.0°C**
-
Leaving temperature during operation
19.0°C**
50.0°C
Entering/leaving temperature difference at full load
2.8 K
11.1 K
Condenser
*
**
Options 5/6 not available
For lower condenser temperatures, a water flow control valve must be installed at the
condenser (two-way or three-way). Please refer to option 152 to ensure the correct
condensing temperature.
Notes:
Ambient temperatures: During storage and transport of the units (including by container) the minimum and maximum permissible temperatures are -20°C and 72°C (and
65°C for option 200).
For more precise details refer to the unit selection program.
55
Cond enser leaving water temperature, °C
30XW-V
50
45
40
35
30
25
20
15
0
5
10
15
20
Evaporator leaving water temperature, °C
From approx. 50% to full load
Part load limit approx. 50%
Minimum load limit
For more precise details please refer to the unit selection program.
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A
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R
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1
6
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1
7
269
CONTROLS
Touch Pilot operator interface
HEATING HEATING
The 30XWHV is equipped with an RS485 serial port that
offers multiple remote control, monitoring and diagnostic
possibilities. Carrier offers a vast choice of control products,
specially designed to control, manage and supervise the
operation of an air conditioning system. Please consult your
Carrier representative for more information.
COOLING
Units with Touch Pilot control can be easily accessed from
the internet, using a PC with an Ethernet connection. This
makes remote control quick and easy and offers significant
advantages for service operations.