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FORM NO.: 6U6K-B01E-NB-EN
SECTION 2 – PRODUCT DESCRIPTION
INTRODUCTION
YORK Air-Cooled Modular Chiller and Heat Pump provide
chilled water or (and) hot water for all air conditioning
applications using central station air handling or terminal
units. They are completely self-contained and are designed
for outdoor (roof or ground level) installation. Each complete
packaged unit includes hermetic scroll compressors, a liquid
cooler, air cooled condensers, a charge of refrigerant R410A
and a weather resistant microprocessor control center, all
mounted on a welded steel base.
The units are completely assembled with all interconnecting
refrigerant piping and internal wiring, ready for field
installation.
Prior to delivery, the packaged unit is pressure-tested,
evacuated, and fully charged with Refrigerant-R410A and oil.
After assembly, a complete operational test is performed with
water flowing through the cooler to assure that the refrigeration
circuit operates correctly.
The unit structure is heavy-gauge, galvanized steel. This
galvanized steel is coated with baked-on powder paint, which,
when subjected to ISO 9227 500 hour, salt spray testing, yields
a minimum ISO 10289 rating of "6". Corrosion resistant wire
mesh grills and lower panels are added to protect the condenser
coil from incidental damage and restrict unauthorized access to
internal components.
All exposed power wiring is routed through liquid-tight, UV-
stabilized, non-metallic conduit.
The unit conforms with the essential requirements of the
following relevant EC directives:
•
Pressure Equipment Directive 2014/68/EU
•
EMC Directive 2014/30/EU
•
Machinery Directive 2006/42/EC
•
Ecodesign Directive (2009/125/EC)
•
Energy Label Directive 2010/30/EU
GENERAL SYSTEM DESCRIPTION
JOHNSON CONTROLS
Cooke Industries - Phone: +64 9 579 2185
Compressor
Each unit has a DC (direct current) inverter scroll compressor
which is driven directly by an external driver, located next to
the control panel. The compressor is capable to run at the speed
of 40 to 110 Hz. Standard sound insulation includes an acoustic
blanket and a sheet metal enclosure.
The unit also has fixed speed, hermetic, scroll compressors.
High efficiency is achieved through a controlled orbit and the
use of advanced scroll geometry. The compressors incorporate
a compliant scroll design in both the axial and radial direction.
All rotating parts are statically and dynamically balanced. A
large internal volume and oil reservoir provides greater liquid
tolerance. Compressor crankcase heaters are also included for
extra protection against liquid migration.
Refrigerant Circuits
One or two independent refrigerant circuits are provided on
each unit. Each circuit uses copper refrigerant pipe formed on
computer controlled bending machines to reduce the number of
brazed joints resulting in a reliable and leak resistant system.
Each circuit shall incorporate all components necessary for the
designed operation including: a suction accumulator, a liquid
receiver, a four way reversing valve, service valves, pressure
relief valves, an oil separator (only available for inverter
system), a bi-flow electrical expansion valve. Suction lines shall
be covered with closed-cell insulation.
Electronic Expansion Valve
Electronic Expansion Valve works as throttle device. The valve
supports automatic adjustment of refrigerant flow rate and makes
the system work under optimized conditions for the purpose of
fast cooling or heating, precise temperature control and energy
saving. It permits operation at both low temperatures and
comfort cooling applications without a capacity loss or derate at
either condition (Factory mounted).
Evaporator (Heat Exchanger)
The compact, high efficiency Brazed Plate Heat Exchanger
(BPHE) is constructed with 316 stainless steel corrugated
channel plates with a filler material between each plate. It offers
Email: sales@cookeindustries.co.nz
SECTION 2 – PRODUCT DESCRIPTION
Web: www.cookeindustries.co.nz
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