AIR-COOLED LIQUID CHILLERS 30RBS 039-160
■■ Integrated hydronic module (option)
-- Centrifugal low or high-pressure water pump (as
required), based on the pressure loss of the hydronic
installation
Hydronic module
-- Single or dual water pump (as required) with operating
time balancing and automatic changeover to the
back-up pump if a fault develops
-- Water filter protects the pump against circulating
debris
-- Pressure measurement, using two pressure
transducers and allowing indication of water flow rate,
water pressure and lack of water.
-- High-capacity membrane expansion tank ensures
pressurisation of the water circuit
-- Overpressure valve, set to 4 bar
-- Speed variator on the pumps (option) to ensure the
correct flow rate, based on the system requirements
-- Thermal insulation and frost protection down to
-2 0°C, using an electric resistance heater (see table of
options)
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7
-- Optional variable-speed pump for economical
operation
-- The control algorithm adjusts the water flow rate
based on the actual system requirements and
obsoletes the need for the control valve at the unit
outlet.
■■ Increased energy efficiency at part load
-- Eurovent energy efficiency class (in accordance with
EN14511-3:2013) C and D in cooling mode and B
and C in heating mode.
-- The refrigerant circuit includes several compressors
connected in parallel. At part load, around 99% of
the operating time, only the compressors that are
absolutely necessary operate. At these conditions the
compressors operating are more energy efficient, as
they use the total condenser and evaporator capacity.
-- The electronic expansion device (EXV) allows
operation at a lower condensing pressure (EER, COP
and ESEER optimisation).
-- Dynamic superheat management for better utilisation
of the water heat exchanger surface.
■■ Reduced maintenance costs
-- Maintenance-free scroll compressors
-- Fast diagnosis of possible incidents and their history
via the Touch Pilot Junior control
-- R410A refrigerant is easier to use than other
refrigerant blends.
Environmentally balanced
■■ Non-ozone depleting R410A refrigerant
-- Chlorine-free refrigerant of the HFC group with zero
ozone depletion potential
-- Very efficient - gives an increased energy efficiency
ratio (EER, COP and ESEER)
-- 50% reduction in the refrigerant charge through the
use of micro-channel heat exchangers for the cooling
only units (30RBS)
■■ Leak-tight refrigerant circuit
-- Brazed refrigerant connections for increased leaktightness
-- Reduction of leaks due to reduced vibration levels and
elimination of capillary tubes (TXVs)
-- Verification of pressure transducers and temperature
sensors without transferring refrigerant charge.
101
HEATING HEATING
Easy and fast installation
Economical operation
AIR TREATMENT
■■ Compressors
-- Low-noise scroll compressors with low vibration level
-- The compressor assembly is installed on an
independent chassis and supported by anti-vibration
mountings
-- Dynamic suction and discharge piping support,
minimising vibration transmission (Carrier patent).
■■ Condenser (30RB)/air section
-- Vertical condenser coils
-- Protection grilles on anti-vibration mountings to
protect the heat exchanger against possible shocks
(optional on 30RB 039-160).
-- Low-noise latest-generation Flying Bird IV fans, made
of a composite material (Carrier patent) are now even
quieter and do not generate intrusive low-frequency
noise
-- Rigid fan installation for reduced start-up noise
(Carrier patent).
■■ Physical features
-- The unit has a small footprint and a low height
(1330 mm) allowing it to blend in with any architectural
styles.
-- The unit is enclosed by easily removable panels,
covering all components (except air heat exchangers
and fans).
■■ Simplified electrical connections
-- A single power supply point without neutral
-- Main disconnect switch (option 70) with high trip
capacity
-- Transformer for safe 24 V control circuit supply
included
■■ Fast commissioning
-- Systematic factory operation test before shipment
-- Quick-test function for step-by-step verification of the
instruments, electrical components and motors.
CONTROLS
Quiet operation
COOLING
Features and advantages