AIR-COOLED SCROLL CHILLERS WITH
GREENSPEED INTELLIGENCE 30RBM/30RBP 160-520
®
Features and advantages
Fast and easy installation
■■ Compact design
-- The AquaSnap units are designed to offer compact
dimensions for easy installation.
-- With a length of approximately 4.8 m for 520 kW and
a width of 2.25 m the units require minimum floor
space.
HEATING HEATING
■■ Condenser section with fixed speed fans (30RBM
models):
-- Optional low-speed fans (700 rpm) and compressor
enclosure to reduce full load noise level by 6 to 7dB(A)
-- Condenser coils in V-shape with an open angle,
allowing quieter air flow across the coil
-- Low-noise 4th generation Flying Bird fans, made of a
composite material (Carrier patent)
-- Rigid fan installation for reduced noise (Carrier patent).
■■ Condenser section with Greenspeed® variable-speed fans
(30RBP models recommended by Carrier for even quieter
operation):
-- Optional factory setting of the fan in low speed
together with compressors enclosure to reduce full
load noise level by 6 to 7 dB(A)
-- Exceptional acoustic signature during part-load
operation through smooth fan speed variation.
■■ Specific control functions or features to reduce noise level
during night or unoccupied periods:
-- Night time sound control with cooling capacity and
fan speed limitation
-- Low-noise scroll compressors with low vibration level
-- The compressor assembly is installed on an
independent chassis and supported by flexible antivibration mountings.
-- Dynamic suction and discharge piping support,
minimising vibration transmission (Carrier patent)
-- Acoustic compressor enclosure, reducing radiated
noise emissions (option).
COOLING
Low sound level
CONTROLS
■■ High unit full and part load energy efficiency and efficient
design of the water side:
-- Eurovent energy efficiency class A or B
-- Standardised Eurovent values in accordance with EN
14511-3:2013 EER up to 3.1 and ESEER up to 4.35
(30RBP version)
-- Multiple scroll compressors equipped with a highefficiency motor that permit exact matching of the
cooling capacity to the load
-- Electronic expansion device permitting operation at a
lower condensing pressure and improved utilisation
of the evaporator heat exchange surface (superheat
control)
-- Condenser with high-efficiency Novation® aluminum
micro channel heat exchangers and Greenspeed®
variable speed fans (30RBP version)
-- Low pressure drop brazed plate heat exchangers
(pressure drops < 45 kPa at Eurovent conditions).
■■ Specific control functions to reduce unit cooling energy
use during occupied and unoccupied periods:
-- Internal time schedules clock: Permits chiller on/off
control and operation at a second set point
-- Automatic water set-point offset based on outside air
temperature or room air temperature via an option
-- Floating high-pressure management
-- Variable-speed fan control
-- Cooling demand limitation.
■■ Greenspeed® variable-speed pump to reduce pumping
energy use up to 2/3 (option recommended by Carrier):
-- Elimination of the energy losses caused by the water
flow control valve by the electronic setting of the
nominal water flow
-- Energy savings during stand-by periods or part-load
operation by automatic water pump speed reduction.
Pump motor energy use varies as the cube of the
speed so that only 40% speed reduction can reduce
energy consumption by 80%
-- Improved unit part-load performance (SEER increased
SEER value with variable water flow following
EN14825).
Refer to hydronic option chapter for more information.
■■ Extra energy savings through multiple options:
-- Glycol free direct-expansion free cooling (Carrier
patent) on one or two refrigerant circuits or hydronic
free cooling (available in 2015)
-- Partial or total heat reclaim.
■■ Reduced maintenance costs
-- Fast diagnosis of possible incidents and their history
via the control
-- R-410A refrigerant is easier to use than other
refrigerant blends.
AIR TREATMENT
Very economical operation
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