Controls
Pro-Dialog+ control
Pro-Dialog+ combines intelligence with operating
simplicity. The control constantly monitors all machine
parameters and precisely manages the operation of
compressors, expansion devices, fans and of the water
heat exchanger water pump for optimum energy efficiency.
Pro-Dialog+ interface
\\MAINMENU\STATUS
CAPB_T
DEM_LIM
SP
CTRL_PNT
EMSTOP
0
100
4.2
-28.9
dsable
%
%
°C
°C
Circuit B Total Capacity
START/STOP
ENTER
HEATING
PRO-DIALOG+
■■ Energy management
-- Seven-day internal time schedule clock: Permits unit
on/off control and operation at a second set point
-- Set point reset based on the outside air temperature
or the return water temperature or on the water heat
exchanger delta T
-- Master/slave control of two units operating in parallel
with operating time equalisation and automatic
change-over in case of a unit fault.
-- Change-over based on the outside air temperature
■■ Integrated features
-- Night mode: Capacity and fan speed limitation for
reduced noise level
■■ Ease-of-use
-- The new backlighted LCD interface includes a manual
control potentiometer to ensure legibility under any
lighting conditions.
-- The information is displayed clearly in English, French,
German, Italian and Spanish (for other languages
please consult Carrier)
-- The Pro-Dialog+ navigation uses intuitive tree-
structure menus, similar to the Internet navigators.
They are user-friendly and permit quick access
to the principal operating parameters: number
of compressors operating, suction/discharge
pressure, compressor operating hours, set point, air
temperature, entering/leaving water temperature.
436
Remote operating mode with
volt-free contacts (standard)
A simple two-wire communication bus between the
RS485 port of the AquaSnap and the Carrier Comfort
Network 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 on these products.
-- 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)
-- Alert indication: This volt-free contact indicates the
presence of a minor fault
-- Alarm indication: This volt-free contact indicates the
presence of a major fault that has led to the shutdown of the unit
-- User safety: This contact can be used for any
customer safety loop, closing of the contact
generates a specific alarm
-- Out of service: This signal indicates that the unit is
completely out of service
-- Unit capacity: This analogue output (0-10 V) gives an
immediate indication of the unit capacity
-- Compressor operation: This contact signals that the
compressor is in operation.
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7