Water-cooled Screw Chiller WZY SERIES Cooling & Heating Johnson Controls - Hitachi Air Conditioning New Pier Takeshiba South Tower 1-16-1, Kaigan Minato-ku, Tokyo 105-0022, JAPAN The specifications of this catalog may change without prior notice to allow Hitachi Cooling & Heating to incorporate the latest innovations for its customers. The information contained in this catalog is merely informative. Hitachi Cooling & Heating declines any responsibility in the broadest sense, for damage, direct or indirect, arising from the use and / or interpretation of the recommendations in this catalog. Find the products Hitachi Cooling & Heating with the best service and conditions at your Hitachi Distributor.

Keep up with progress Incorporate proprietary cutting-edge technology In 1972 we manufactured the first semi-hermetic twin-screw compressor in refrigeration areas. In addition to high efficiency, optimized refrigeration cycle, greater accuracy and higher stability our new water-cooled chillers adopt G-type semi-hermetic twin-screw compressors with the auxiliary functions such as heat pumps, cooling, total heat reclaiming and etc. The water-cooled chiller is designed to cover a broad range of applications from air conditioning of buildings to cooling of factories such as airports, hospitals, schools...

INDEX 05 Product Description 15 The Unit Dimensional Data 18 The Unit Foundation Figure

PRODUCT – DESCRIPTION PRODUCT – FEATURES MODEL CODE 1. Adopt R134a environmental refrigerant without any destruction to ozone layer. 2. High efficiency units reduce electric energy consumption so as to lower the CO² discharge and greenhouse effect. 3. The whole series comply with RoHS directive. +5% Export Machine; Not for Interrnal Continuous capacity control Cooling mode: water cooled Operating cost HIGH EFFICIENCY AND ECO-FRIENDLY Cooling capacity (RT) F: R134a Refrigerant RCU: Cooling Only type TECH INNOVATION AND CUTTING-EDGE DESIGN UNIT STRUCTURE WZY SERIES OPERATION RANGE Each compressor...

UNIT DESCRIPTION In 1972 we manufactured the first semi-hermetic twin-screw compressor in refrigeration areas. Until now we have delivered more than 200000 Hitachi twin-screw compressors to countries around the world. WZ Series adopt the latest Hitachi G-type compressors, which provides greater service to clients. Refrigerant inlet Refrigerant drainage outlet Centrifugal oil separator (155-520RT is installed externally,) Screw rotor INDEPENDENTLY DEVELOPED HITACHI R134A REFRIGERANT G-TYPE SEMI-HERMETIC TWIN-SCREW COMPRESSOR Accurate measurement. Advanced 3D positioning measurement technology....

REFRIGERANT CIRCUIT ADVANCED MICROCOMPUTER CONTROL SYSTEM Each compressor can operate independently, with good standby application, including exhaust check valve, safety valve, pipe ball valve, filter, service valve, pressure switch, pressure sensor, thermistor and etc. ACCORDING WITH RoHS Ecological Eco-friendly Harmless “Management Measures for the Limited use of Harmful Substances in Electrical and Electronic Products” is the official standard in China which is issued in January 2016 and implemented at July 1st 2016, is also called Chinese RoHS. It’s intended to reduce and limit lead, cadmium,...

INTELLIGENT – CONTROL ACCURATE UNIT CONTROL COMPLETE PROTECTIONS CONTINUOUS CAPACITY CONTROL The combination of Microcomputer Control System and Continuous Compressor Technology makes continuous capacity control and temperature adjustment more stable, partial load regulation more accurate. BALANCED COMPRESSOR OPERATION Multiple compressors automatically balance operating time by each of themselves. CENTRALIZED-CONTROL SYSTEM SATISFYING INTELLECTUAL USAGE NEEDS (WATER COOLED) No.1 One unit connects with another 8 units through H-LINK at most. MODBUS-RTU IS ALTERNATIVE, WHICH CAN CONNECT WITH THE...

WATER CHILLING/HEAT PUMP - GROUND WATER CONDITION Groundwater Heat Pumps, GWHPs: Using groups of pumping wells to draw ground water. Using the secondary heat transfer or directly sending water to chilling/heat pump. After extracting or releasing heat, the water will be sent back. WZY SERIES WATER CHILLING/HEAT PUMP - SURFACE WATER CONDITION Using direct or indirect heat exchange to take water from seas, rivers, lakes or reservoir as cold and heat sources. In order to avoid erosion or blocking, indirect heat exchange is recommended. And a heat exchange shall be used. WATER CHILLING/HEAT PUMP -...

Electrical Control Box Electrical Control Box Compressor Chilled Water Outlet Cooling Water Inlet Evaporator Chilled Water Outlet Chilled Water Inlet Chilled Water Inlet Cooling Water Outlet Cooling Water Inlet Cooling Water Outle

RCUF100/125WZY UNIT FOUNDATION FIGURE Drainage Channel Pipe Side Drainage Channel Pipe Side Foundation Bolt Cement Mortar Concrete Front Side – RCUF155/210/260WZY UNIT FOUNDATION FIGURE Drainage Channel Drainage Channel Front Side Foundation Bolt Pipe Side Cooling Water Inlet Cement Mortar Chilled Water Inlet Cooling Water Outlet Chilled Water Out

RCUF310/365/420/470/520WZY UNIT FOUNDATION FIGURE PREPARATORY – WORK ROLLING TRANSPORT The unit is settled on the frams Drainage Channel Put multiple rolling poles in the same size under the units, and every pole needs to support the two timber frames and keep balance. Rolling Poles (above 6) Foundation Bolt Drainage Channel ANGLE OF INCLINATION The angle cannot be greater than 15 degrees. If ＞15 degrees, the unit may fall down. Front Side Pipe Side Cement Concrete Mortar Timber Frames Horizontal Line SLING ATTENTIONS 1. Check and Guarantee if the unit is fixed with lifting hock. The sling angle...