SAMURAI SERIES AIR COOLED WATER CHILLERS -SCREW TYPE …documentatie.hdkl.nl/Koudwatermachines/TECHNICAL... · SAMURAI SERIES AIR COOLED WATER CHILLERS-SCREW TYPE- ... Service Space

Installation, operation andmaintenance instructions.Design information.

RCUE180~450AG2B

Technical Catalogue

SAMURAI SERIES

AIR COOLED WATER CHILLERS

-SCREW TYPE-

AG2B

Specifications in this manual are subject to change without notice in order that HITACHI may bring the latest innovations to their customers.

Whilst every effort is made to ensure that all specifications are correct, printing errors are beyond Hitachi’s control; Hitachi cannot be held responsible for these errors.

Contents

Technical Catalogue

5TCGB0054 rev.0 - 08/2010

Important Notice

Features and Benefits

Operation Instructions

Name of parts

Preparation Initial Check

Installation

Test Running

Controler Adjustment

Self-Inspection Functions

Control System

Maintenance

Troubleshooting

General Specifications

Drawings

Model Selection

Application Data

Components Data

1234567891011121314151617

7

Contents

TCGB0054 rev.0 - 08/2010

Technical Catalogue

Contents

1. Important Notice ............................................................................................................... 11

2. Features and Benefits ......................................................................................................132.1. Unit picture .............................................................................................................................................. 14

2.2. Control ..................................................................................................................................................... 15

2.3. LCD Control Panel ................................................................................................................................... 16

2.4. Compressor ............................................................................................................................................. 16

2.5. Fan motor ................................................................................................................................................ 19

2.6. Electronic expansion valve ...................................................................................................................... 19

3. Operation Instructiions......................................................................................................213.1. Hitachi Air-Cooled Water Chillers ............................................................................................................ 22

4. Name or Parts ..................................................................................................................234.1. Structure drawing .................................................................................................................................... 24

5. Preparation Inital Check ...................................................................................................275.1. Initial check .............................................................................................................................................. 28

5.2. Placing The Unit ...................................................................................................................................... 29

5.3. Gravity centre .......................................................................................................................................... 30

5.4. Service Space and Foundation ............................................................................................................... 31

5.5. Transportation .......................................................................................................................................... 33

6. Installation ........................................................................................................................376.1 Handle installation .................................................................................................................................... 38

6.2. Electrical Wiring ....................................................................................................................................... 38

6.3 Water piping .............................................................................................................................................. 42

6.4. Typical common water piping .................................................................................................................. 43

6.5. Minimum internal system water volume .................................................................................................. 44

6.6. Water control ........................................................................................................................................... 44

6.7. BMS gateways ......................................................................................................................................... 45

6.8. Remote controllers .................................................................................................................................. 51

7. Test Running .....................................................................................................................577.1. Preparation .............................................................................................................................................. 58

7.2. Test Running ............................................................................................................................................ 58

7.3. Instructions After Test Running ................................................................................................................ 58

8. Controller adjustment .......................................................................................................598.1. Control System ........................................................................................................................................ 60

8.2. Control Adjustment .................................................................................................................................. 69

TCGB0054 rev.0 - 08/20108

Contents

Technical Catalogue

Contents (Cont.)

9. Self-Inspection functions ..................................................................................................799.1. Alarm Screen ........................................................................................................................................... 80

9.2. Alarm Indication ....................................................................................................................................... 80

9.3. Normal Indication ..................................................................................................................................... 82

9.4. Function for indication of operation condition .......................................................................................... 82

10. Control System ...............................................................................................................8310.1. Standard operation sequence RCUE180, 210, 240AG2B ..................................................................... 84

10.2. Standard operation sequence RCUE280, 320, 350, 400, 450AG2B ..................................................... 85

11. Maintenance ...................................................................................................................8711.1. Components........................................................................................................................................... 88

11.2. Lubrication ............................................................................................................................................. 88

11.3. Deposit ................................................................................................................................................... 88

11.4. Cleaning Method .................................................................................................................................... 89

11.5. Winter Shutdown.................................................................................................................................... 91

11.6. Spring Start-Up ...................................................................................................................................... 91

11.7. Part Replacement .................................................................................................................................. 91

11.8. Refrigeration Cycle ................................................................................................................................ 91

11.9. Refrigerant Cycle Diagram of Hitachi Air-Cooled Water Chiller (RCUE210, 280, 320, 400AG2B) ........................................................................................................ 92

11.10.Refrigerant Cycle Diagram of Hitachi Air-Cooled Water Chiller (RCUE180, 240, 350, 450AG2B) with ECONOMIZER. ........................................................................ 93

11.11. Compressor Removal .......................................................................................................................... 94

11.12. Safety and protection control ............................................................................................................... 95

11.13. Normal Operating Pressure ................................................................................................................. 96

11.14. Test Running And Maintenance Record ............................................................................................... 97

11.15. Daily Operating Records ...................................................................................................................... 98

11.16. Servicing for R407C Refrigerant System ............................................................................................. 99

12. Troubleshooting ............................................................................................................10112.1.Procedures for trouble .......................................................................................................................... 102

13. General Specifications..................................................................................................10513.1. General Data ....................................................................................................................................... 106

13.2. Options ................................................................................................................................................ 108

14. Drawings.......................................................................................................................10914.1. Dimensional drawing ............................................................................................................................110

14.2. Wiring Diagram .....................................................................................................................................111

15. Model Selection ............................................................................................................12115.1. Selection Example ............................................................................................................................... 122

15.2. Performance Table............................................................................................................................... 123

15.3. Electrical Data .................................................................................................................................... 127

15.4. Sound Data .......................................................................................................................................... 128

9

Contents

TCGB0054 rev.0 - 08/2010

Technical Catalogue

16. Application Data............................................................................................................12916.1. Working Range .................................................................................................................................... 130

16.2. Part Load Performance ....................................................................................................................... 131

16.3. Ethylene Glycol Application ................................................................................................................. 132

17. Components Data.........................................................................................................13517.1. Compressor ......................................................................................................................................... 136

17.2. Condenser and Condenser Fan .......................................................................................................... 136

17.3. Water Cooler ........................................................................................................................................ 137

Contents (Cont.)

TCGB0054 rev.0 - 08/201010

Contents

Technical Catalogue

¡ Unit code list

NOTE:

MODEL CODIFICATION Please check by model name your unit type, its abbreviation and reference number in this technical catalogue.

RCUE-AG2B SERIES

Unit Code Unit Code

RCUE180AG2B 8E181073 RCUE320AG2B 8E321073




3~

RCUE180AG2B

Unit type

Capacity (HP) SeriesR407C refrigerant

Air cooledMade in Europe

Large compressor

Important Notice

Technical Catalogue

11. I m p o r t a n t N o t i c e

TCGB0054 rev.0 - 08/2010 11

1. Important Notice .......................................................................................................... 11

Contents

Important Notice

Technical Catalogue

TCGB0054 rev.0 - 08/201012

− HITACHI pursues a policy of continuing improvement in design and performance of Products. The right is therefore reserved to vary specifications without notice.

− HITACHI cannot anticipate every possible circumstance that might involve a potential hazard. − No part of this manual may be reproduced without written permission. − Signal words (DANGER, WARNING and CAUTION) are used to identify levels of hazard seriousness.

Definitions for identifying hazard levels are provided below with their respective signal words.

DANGER:Immediate hazards which WILL result in severe personal injury or death.

WARNING:Hazards or unsafe practices which COULD result in severe personal injury or death.

CAUTION:Hazards or unsafe practices which COULD result in minor personal injury or product or property damage.

NOTE:Useful information for operation and/or maintenance.

− If you have any questions, contact your contractor or dealer of HITACHI. − This instruction gives a common description and information for this air-cooled water Chiller which you

operate as well as for other models. − This air-cooled water Chiller has been designed for the following temperatures. Operate the air-cooled water

Chiller within this range.

Working Range for RCUE-AG2B

Maximum Minimum

Ambient Temperature (ºC) 46 -15

Chilled WaterOutlet Temperature (ºC)

15 5 (-10)*

(*) In case of low water outlet temperature option

− These instructions should be considered as a permanent part of the water Chiller equipment and should remain with the unit.


Technical Catalogue

2

2. F e a t u r e s a n d B e n e f i t s

TCGB0054 rev.0 - 08/2010 13

2. Features and Benefits .................................................................................................132.1. Unit picture .............................................................................................................................................. 14

2.2. Control ..................................................................................................................................................... 15

2.3. LCD Control Panel................................................................................................................................... 16

2.4. Compressor ............................................................................................................................................. 16

2.5. Fan motor ................................................................................................................................................ 19

2.6. Electronic expansion valve ...................................................................................................................... 19

Contents


Technical Catalogue

TCGB0054 rev.0 - 08/201014

2.1. Unit picture

2.210mm shorter

New Model: 10,560 mm

Previous Model: 12,790 mm

HITACHI is a world leader in technology and with continual product research and development, which offers screw type Air Cooled Chillers from 439 kW to 1166 kW.

¡ New product line

The new product line increases capacity range of the HITACHI Air Cooled Water Chillers to cover the market requirements up to 1,2MW with the new RCUE450AG2B unit.

¡ Compact installation

The last modifications of air side heat exchanger dimensions and the new designs for refrigerant distribution to each pass have allowed reducing up to 20% of the length.

Comparison with 350HP

Cooling capacity range

1166 kW439 kW

112 kW 1030kW

2.230 mm shorter


Technical Catalogue

2

TCGB0054 rev.0 - 08/201015

2.2. ControlHITACHI Controls have been developed to achieve the best performance of the units and the interaction with the user.

¡ Many functions

− Current limiter

− Forced compressor load control

− 2 different temperatures setting

− Various fan speed control

− Memory data in alarm

− Automatic restart after power failure

− Output signal for free cooling application

− External thermostat operation, etc…

¡ Precise temperature control

Combinations of “Continuous Capacity Control Compressor” and “HITACHI’s unique electronic controls” enable the Chiller to control outlet water temperature precisely, independent of cooling load.

This control benefits not only Air-conditioning but also industrial process use.

Stop Control:Temperature Band 7ºC

Load up 1

Continuous Control:Temperature Band 2ºC Neutral Band

Load up 2

Wat

er O

utle

t Tem

pera

ture

------- Conventional Step ControlHitachi Continuous Capacity Control____


Technical Catalogue

TCGB0054 rev.0 - 08/201016

2.3. LCD Control PanelHITACHI AG2B series are equipped with a friendly user liquid crystal display (LCD), which shows the data of the unit and allows the settings of several parameters for optimizing the performance of the unit depending on the specific applications.

¡ LCD Panel options

− Compressor load

− Status information for each fan

− Discharge pressure and suction pressure information

− Several water and refrigerant temperature information

− Compressor current consumption information

− Setting options to specify installation conditions in order to optimize the chiller performance

2.4. CompressorThe HITACHI Samurai range incorporates the latest development of Hitachi’s screw compressor technology with the Hitachi’s Continuous Capacity Control.


Technical Catalogue

2

TCGB0054 rev.0 - 08/201017

¡ Twin screw compressor

By having so few moving parts, it has become highly reliable with very low noise level and low vibration.

¡ Principle of compression

ReciprocatingScrew

AM

PLI

TUD

E (µ

m)

Time (second)

LOW VIBRATION

Suction Port

Discharge Port


Technical Catalogue

TCGB0054 rev.0 - 08/201018

¡ Continuous capacity control

HITACHI´s Continuous Capacity Control system uses advanced electronic controls to position the infinitely variable slide valve within each compressor.

This modulation allows exact load control and accurate chilled water temperature without the need for expensive inverters.

¡ Energy Saving

Thanks to Continuous Capacity Control, 15~20% energy saving is possible compared with current step control systems due to the following:

The cooling load can be more closely matched

Continuous Capacity Control takes advantage of high efficiency part load performance.

Frequent compressor starts and stops are eliminated.

continuous capacity control

Cooling capacity (%)

Mot

or in

tup

(%)

Part Load performance

Cooling load = continuous capacity control

Coo

ling

load

%

Time (Hour)

Step Control


Technical Catalogue

2

TCGB0054 rev.0 - 08/201019

2.5. Fan motor

¡ DC Fan Motor with Outstanding Efficiency

The DC fan motor greatly improves efficiency compared to conventional products using an AC motor. Furthermore, air blasts are reduced by controlling the rotation speed of the fan.

PWM (pulse width modulation) concept of speed control

The switching element (a power MOSFET) switches back and forth at a frequency of several tens of kHz. This controls the ON//OFF duty rate per cycle and thus changes the voltage applied to the fan motor to control the rotation speed.

¡ Low Sound

Hitachi uses high technology to achieve the lowest sound. The new two bladed propeller, rather than four bladed, achieves a reduction of noise level, increases air flow volume, and at the same time provides an important reduction of motor power input

2.6. Electronic expansion valveThese units are equipped with an electronic expansion valve to provide sophisticated control under any temperature condition.

The electronic expansion valve provides reduced electrical power consumption compared to the classical system.

Mot

or E

ffici

ency

(%)

DC Motor

Efficiency increased by 40% (motor input halved)

AC Motor

Revolutions per minute (rpm)


Technical Catalogue

3

3. O p e r a t i o n I n s t r u c t i o n s

TCGB0054 rev.0 - 08/2010 21

3. Operation Instructions .................................................................................................213.1. Hitachi Air-Cooled Water Chillers ............................................................................................................ 22

Contents


Technical Catalogue

TCGB0054 rev.0 - 08/201022

3.1. Hitachi Air-Cooled Water Chillers

¡ Previous starting check

− Before starting, see chapter 6.1. Electrical Wiring and 7.2 Test running.

NOTE: Due to safety reasons, it is recommended to operate the unit remotely with the doors of the electrical box closed.

¡ Starting

− Open the water inlet and outlet valves

− Switch on handle on the electric box to electrical power supply (white lamp inside electrical panel in ON)

− Start the cycle operation locally, by pressing white ON button on the panel, or remotely by the provided actuator (green lamp inside the electrical panel is ON)

− Compressor will start to run approximately 3 minutes after switch ON (if desired check setting configuration to increase compressor starting delay. Chapter 8)

− Ensure that the displayed data in LCD are within the working range (consult to the HITACHI technical service)

− Set the desired water temperature on LCD.

¡ Stop the unit

− Compressors operation is switch off by pressing black button “OFF” inside the electrical panel.

NOTE:OFF function is always available in both, local and remote control mode.

¡ Performance

− Specific installation conditions (load, location, ambient temperature, water, etc…) could require adjusting the water temperature control in order to optimize the chiller performance. (See water system control setting on Chapter 8).

¡ Alarms and cautions

− In case of abnormal chiller performance check alarms or caution indications on LCD.

− When some alarms occur yellow lamp is ON and LCD is red colored. Check troubleshooting for details in Chapter 9

¡ Periodical checking

1. Check the power supply

2. Check abnormal sound or vibrations

3. Check that the unit amperage is within the range by any ammeter in the LCD

4. Check that water circuit parameters are within the range

5. Check that refrigerant circuit parameters are within the range

Power on (green)Alarm OM (ambar)

Compressor and refrigerant cycle (white)Switch off button (black)

Switch on button (white)

Name of parts

Technical Catalogue

4

4. N a m e o f p a r t s

TCGB0054 rev.0 - 08/2010 23

4. Components of Chiller .................................................................................................234.1. Structure drawing .................................................................................................................................... 24

Contents

Name of parts

Technical Catalogue

TCGB0054 rev.0 - 08/201024

4.1. Structure drawing

¡ HITACHI Air-Cooled Water Chiller unit (Example of 2 compressors Chiller) (Complementary drawing)N°

Nam

eN°

Nam

e

1C

ompr

esso

r10

Ele

ctro

nic

Exp

ansi

on V

alve

2W

ater

Coo

ler

11Li

quid

Lin

e S

top

Valv

e

3C

onde

nser

12Fi

lter D

rier

4E

lect

rical

Box

13Li

quid

Sig

ht G

lass

5P

ower

Wiri

ng S

uppl

y14

Sol

enoi

d Va

lve

(onl

y fo

r 180

, 240

, 350

, 450

HP

)

6Fa

n15

Eco

nom

izer

(onl

y fo

r 180

, 240

, 350

, 450

HP

)

7C

heck

Val

ve

16H

igh

Pre

ssur

e S

witc

h

8O

il S

ight

Gla

ss17

Pre

ssur

e re

lief v

alve

9O

pera

tion

Sw

itch

Air

Out

let

Air

Out

let

Air

Out

let

Air

Out

let

Air

Out

let

Air

In

let

Air

Out

let

Air

Out

let

Air

Out

let

Wat

er

Inle

tW

ater

O

utle

tW

ater

In

let

Wat

er

Out

let

Air

In

let

Sid

e Vi

ew

Name of parts

Technical Catalogue

4

TCGB0054 rev.0 - 08/2010 25

¡ HITACHI Air-Cooled Water Chiller unit (Example of 2 compressors Chiller)

Detail of PIPE Assy structure.

Electrical box detail (A)

Air Outlet

Air Outlet Air Outlet

Air Outlet Air Outlet

Air Inlet

Air Inlet

Air Inlet

Air Inlet

Rear view Front view

Preparation initial checkTechnical Catalogue

5

5. P r e p a r a t i o n I n i t i a l C h e c k

TCGB0054 rev.0 - 08/2010 27

5. Preparation Inital Check ..............................................................................................275.1. Initial check .............................................................................................................................................. 28

5.2. Placing The Unit ...................................................................................................................................... 29

5.3. Gravity centre .......................................................................................................................................... 30

5.4. Service Space and Foundation ............................................................................................................... 31

5.5. Transportation.......................................................................................................................................... 33

5.5.1. Transportation by rigging ................................................................................................................................. 335.5.2. Transportation by Roller .................................................................................................................................. 365.5.3. Declining the Unit During Transportation. ....................................................................................................... 36

Contents

Preparation initial check

Technical Catalogue

TCGB0054 rev.0 - 08/201028

5.1. Initial check

¡ Required Materials

Measure and architectural information regarding installation location

¡ Installation Location

Confirm that the final installation location is provided with convenient piping and wiring work. Strong water runoff should be avoided.

This unit must be installed in restricted area not accessible to the general public. Install the unit on a roof or in an area where people, except service engineer, can not touch the unit.

¡ Installation Space

Check for obstacles which restrict condenser Air flow or hamper maintenance work in the space specified.

¡ Foundation

Check to ensure that the foundation is flat, level and sufficiently strong, taking into account the maximum foundation gradient (Fig. 2) and the unit weight balance. Confirm elevation provision for the unit on a solid base with an iron frame or concrete curbs shown in chapter 5.4.

In order to obtain proper clearance beneath the unit for either rooftop or on-the-ground installation, where foundation bolts should be sunk into concrete. Additionally, for on-the ground installation, provide a gravel or concrete space around the condenser Air intake in order to avoid Airflow obstruction due to grass or other vegetation.

¡ Unit

Check to ensure that the unit has been transported without damage. File a damage claim with the transportation companies if mishandling due to transportation company negligence is suspected.

¡ Transportation

Secure the route to the final installation location by confirming the dimensions, (Refer to the “Unit General Data” in Catalogue).

DANGER:If leakage is detected, stop the unit and contact the installer or service shop. Do not use a naked fire near the refrigerant gas. If a naked fire is utilised near the refrigerant gas, refrigerant is turned into a harmful phosgene compound.

WARNING:This unit is operated with refrigerant R407C, which is non-flammable and non-poisonous. However, refrigerant itself is heavier than the atmosphere so that a floor is covered with refrigerant gas if refrigerant is leaked. Therefore, keep good ventilation to avoid choke during servicing.

CAUTION:Check to ensure that valves are correctly opened. If not opened, serious damage will occur to the compressor due to an abnormal high pressure.This unit controls air flow for condenser during low ambient temperature.Due to this control, avoid the strong wind hits the unit directly. In such a case, put buffer plate around the unit.


5

TCGB0054 rev.0 - 08/2010 29

5.2. Placing The Unit

¡ Tools and Instruments

Pincers, Wrenches, Facilities to Transport and Place The Unit.

¡ Transportation

Transport the unit as close to the final installation location as practical before unpacking is accomplished. Provide adequate facilities to place the unit on the foundation, with sufficient consideration given to those individuals performing the installation.

¡ Unpacking

Follow the instructions marked on the packing.

NOTE:The height of the wall shall be smaller than that of the unit cabinet. When the unit is installed at a location where the unit is encircled with walls and obstruction of free Air circulation is suspected, construction with HITACHI regarding the operation space is recommended.

3000mm Overhead Air Clearance

h1 ≤ h2

h1

h2


Technical Catalogue

TCGB0054 rev.0 - 08/201030

¡ Maximum Foundation Gradient

The unit should be installed in an upright position within the gradient shown in next figure.

15 mm

30 mm

5.3. Gravity centre

¡ Air-Cooled Water ChillerCentre of Gravity

Control panel

Centre of Gravity

RCUE 180, 210, 240AG2B

RCUE 280, 320, 350, 400, 450AG2B


5

TCGB0054 rev.0 - 08/2010 31

Centre of Gravity

Control Panel

ModelRCUE-AG2B

180 210 240 280 320 350 400 450

Location Weight distribution (Kg)

1 663 786 800 678 690 697 841 8582 742 793 820 696 716 730 772 8033 255 318 344 214 234 248 278 3054 290 332 346 281 293 300 349 3665 663 786 800 286 299 305 355 3726 742 793 820 192 211 225 249 2777 255 318 344 757 778 792 838 8688 290 332 346 536 548 555 677 6949 678 690 697 841 85810 696 716 730 772 80311 214 234 248 278 30512 281 293 300 349 36613 286 299 305 355 37214 192 211 225 249 27715 757 778 792 838 86816 536 548 555 677 694

Operating Weight(Kg) 3900 4458 4620 7280 7538 7704 8718 9086

Location of Centre of Gravity (mm)

Dimension A 2355 2825 2845 5300 5305 5310 6460 6470Dimension B 975 975 975 975 975 975 975 975

5.4. Service Space and Foundation

RCUE 180 AG2B

Vibration-proof Rubber mat(12 positions)

Bottom Frame

8-Ø26(Mounting holes)


Technical Catalogue

TCGB0054 rev.0 - 08/201032

RCUE210, 240 AG2B


Bottom Frame


RCUE280,320, 350AG2B


Bottom Frame



5

TCGB0054 rev.0 - 08/2010 33

RCUE400, 450AG2B


Bottom Frame


Detail of foundation

Bottom Frame

Foundation Bolt

Rubber Bush

(OPTION)

Steel Plate

Concrete

Washer

Vibration-Proof Rubber Mat (1 mat per position)

(OPTION)

Nut

(M20)

(1 mm)

5.5. Transportation5.5.1. Transportation by rigging

Hook wire cables and apply field-supplied spreader bars on the top of the unit (see figure below) to prevent the unit panels from damage due to cable scratches. The unit should remain in an upright position even during rigging. The wire cable to rig the unit shall be three times stronger than the unit weight. Check to ensure that the rigging bolts are tightly fixed to the unit. The rigging angle shall be less than 60° as shown. The weight of the unit is indicated on the unit label.

DANGER:Do not stand below the unit when rigging.

CAUTION:Put clothes between wires and the unit to avoid damages.

WARNING:Follow strictly the lifting method shown by the drawing attached to the unit.


Technical Catalogue

TCGB0054 rev.0 - 08/201034

¡ RCUE180AG2B

Rigging holes

Electrical box

Spreader Bar(Field supplied)

Lifting bracket(Field supplied)

A Detail

¡ RCUE210,240AG2B

Rigging holes

Electrical box



A Detail


5

TCGB0054 rev.0 - 08/2010 35

¡ RCUE280,320,350AG2B

Rigging holes

Electrical box



A Detail

¡ RCUE400,450AG2B

Rigging holes

Electrical box



A Detail


Technical Catalogue

TCGB0054 rev.0 - 08/201036

5.5.2. Transportation by Roller

When rolling the unit, put equal-sized rollers every 1 meter under the base frames. Each roller must carry both the outer frames, and must be suited to balance the unit (see the centre of gravity in page chapter 5.3).

5.5.3. Declining the Unit During Transportation.

WARNING:Do not decline the unit more than an angle of 15º as shown in the figure during transportation. If declined more than an angle of 15º, the unit may fall down.

Installation

Technical Catalogue

6

6. I n s t a l l a t i o n

TCGB0054 rev.0 - 08/2010 37

6. Installation ...................................................................................................................376.1 Handle installation .................................................................................................................................... 38

6.2. Electrical Wiring ....................................................................................................................................... 38

6.3 Water piping ............................................................................................................................................. 42

6.4. Typical common water piping .................................................................................................................. 43

6.5. Minimum internal system water volume .................................................................................................. 44

6.6. Water control ........................................................................................................................................... 44

6.7. BMS gateways......................................................................................................................................... 45

6.7.1. HARDC70-CE1 (OP) - Lon Works interface. .................................................................................................. 456.7.2 HC-A32MB - ModBus interface ........................................................................................................................ 49

6.8. Remote controllers .................................................................................................................................. 51

6.8.1. CSC-5S – Central Station ............................................................................................................................ 51 6.8.2. CSNET Web – Computer central control ..................................................................................................... 54

Contents

Installation

Technical Catalogue

TCGB0054 rev.0 - 08/201038

6.1 Handle installation

6.2. Electrical Wiring

¡ Tools and Instruments

One Set of Wiring tools and Electrical Tester (Clamp Meter)

¡ Schedule Check

DANGER: − This unit must be installed in a restricted area not accessible to the general public.

− Before obtaining access to terminals, all supply circuits must be disconnected. Switch OFF main switch (M.I) for any work inside electrical box.

− Keep electrical box cover closed 2 min. after switching power off (to discharge the capacitors). Do not switch power ON before connecting the earth protection conductor to “PE” terminal (residual leakage current).

− It is recommended that the main switch be locked in the “OFF“ position, to prevent against accidental supply of power during equipment servicing.

NOTE: − Electrical connection must be done by professional installers.

− Electrical wiring must comply with national and local codes. Contact your local authority in regards to standards, rules, regulations, etc.

1x 2x 3x 6x

Electrical box door

Installation

Technical Catalogue

6

TCGB0054 rev.0 - 08/2010 39

¡ General check

− Check that the earth wire is securely connected, tagged and locked in accordance with national and local codes.

− The following diagram and tables show the Hitachi recommendation for the power supply circuit protections and cables types. Ensure that the field-supplied electrical components (main power switches, circuit breakers, wires, connectors and wire terminals) have been properly selected according to the electrical data indicated. Make sure that they comply with national and regional electrical codes.

− Check periodically the electrical connection tightening

− Make sure that the power supply voltage is within ±10% of the rated voltage.

− Make sure that power supply has an impedance low enough to warranty not reduce the starting voltage more than 85% of the rated voltage.

− Check that power terminals L1, L2, L3 and N (R, S, T and N) are correctly connected to the MI terminals. Check terminals tightening and correct phase connection

¡ Main Power Wiring Procedures

CB – Thermal and Magnetic Circuit Breaker according to 60947-4. C Type for Motor protection trip curve. Fixed Breaking Capacity according the table in next page.

EF – Alternatively, Electric Fuses according to EN 60269-2 could be used instead of CB. Use recommended CB values on the table in next page.

ELB – Earth Leakage Breaker according to EN 61008 and based on TN-S earth protection system.

NOTE:For other earth protection systems check regulations for the most proper ELB value

Maximum allowed electric leakage current according to the following table (RMS at 50Hz).

ELB must be A Class. “si” super-immunized earth leakage protection without tripping delay (no S type)

Earth protection system should not have a total resistance higher than 100Ω The maximum trip time for 300 mA should be 0.3s. Earth resistance should be improved if ELB trip time at 0.3s is not ensured.

Installation

Technical Catalogue

TCGB0054 rev.0 - 08/201040

Cable sizes: Copper with XLPE insulation according to IEC 60364-2-52 considering the following installation type:

3 single core loaded cable in a perforated tray and laid in flat formation.(Table A.52-12, method F-6)

Bus Bar: Non insulated copper bus bars according to EN 13601. Considering max. temp. of 65ºC on the bar.

¡ Recommended valves

CB (EF) ELB - Is Cable Bus Bar Cable Bus Bar

4 poles 4 poles recommended maximum

[A] [mA] [mm2] [mm*mm] [mm2] [mm*mm]

400 300 150 30x10 2*185 2*32x6

630 300 240 30x10 2*185 2*32x6

630 300 240 30x10 2*185 2*32x6

630 300 240 30x10 2*240 2*50x5

630 300 240 30x10 2*240 2*50x5

800 300 2*150 40x10 2*240 2*50x5

1000 300 2*185 40x10 2*240 2*50*6

1000 300 2*185 40x10 2*240 2*50*8

NOTE:The indicated values are the recommended values considering installation type described previously. In any case, follow local or national regulations.Recommended cables and bus bars are selected considering CB tripping value. Proposed CB tripping values are fixed standard rated values available on the market. If using variable CB which allows an accurate tripping value setting (based on maximum unit current and maximum staring current in electrical data on chapter 15) then, lower cable or bus bars sizes could be selected.Depending on the installations type, cable trays, maximum allowed temperature and other factors, different cables or bus bar types and sizes could apply.

De = the external diameter of a multi-core cable

Installation

Technical Catalogue

6

TCGB0054 rev.0 - 08/2010 41

¡ Control Wiring

− Connect the interlock wiring and control wiring between the unit terminals and the magnetic switches for the water pumps, according to next figure or the wiring label. The main connection terminal N is required.

NOTE:1. All the settings shall be performed before Power ON.

2. Remote/Local Change over Switch on Operation Switch shall be set to “Remote”. 3. Terminals 1~n57 are for 1~ 230V 50Hz

Terminals A~D are for DC24V Terminals E~F are H-LINK (Low signal)

¡ Available functions:

Low signals (<50V)

− Remote control– terminals A~D (see setting on LCD in chapter 8.2.2)

− Remote control by Hitachi controllers or gateways (H-LINK) – terminals E,F

230 V signals (see setting on PCBa in chapter 8.2.2)

− Remote control – terminals 5~13 (see setting PCBa in chapter 8.2.2)

− Night sift mode operation Option – terminals 22, 24

− 2nd setting temperature activation – terminals 23, 24 (see temperature setting on LCD in chapter 8.2.2)

− External thermostat Option– terminals 25, 24

− Fan Operation activation Option – terminals 26,24

− Water Protection Switch Option (DPSW or Flow SW Options) – terminals 33, 34

− Force Compressor Load Option (thermo off, hold, load down, load up) – terminals n50~n53 (n: 1,2)

− Fan Operation Caution – terminals n54, n55 (n: 1,2)

− Free Cooling Option – terminals 156, 157

Low voltage

Remote Control

RUN/STOP

SIGNAL

ALARM

SIGNAL DC24V

ALARM

LAMPPump Interlock

Pump Operation

In case of remote control operation this wire shall be removed

R Phase

R PhaseNeutral

2 cycles

Remote Control Switch (Option)

In case of individual indication without Remote Control Switch

Customer wiring Setting of low voltage control

Force Compressor Load

Only used for some options:

- Diff. water pressure swiitch

- Flow switch

Night Shift Mode

(OPTION)

2nd. setting temperature (OPTION)

External Therm. Oper.

(OPTION)

Fan Operat Forced Mode

(OPTION)

Only used for

-Diff. water PSW

- Flow switch (options)

Forced CompressorLoad Operation

Caution LampFan operat.

Free CoolingOutput signal(Only cycle nº1)

Installation

Technical Catalogue

TCGB0054 rev.0 - 08/201042

6.3 Water piping

¡ When Piping Connections are performed:

1. Connect all pipes as close as possible to the unit, so that disconnection can be easily performed when required.

2. Connect the Water Coolers in the same unit to the same common Water Piping.3. It is recommended for the piping of the chilled water inlet and outlet that flexible joints be utilised, so that

vibration will not transmit.4. Whenever permissible, sluice valves should be utilised for water piping, in order to minimise flow

resistance and to maintain sufficient water flow.5. Proper inspection should be performed to check for leaking parts inside and outside the system, by

completely opening the chilled water inlet and outlet valves to the water cooler. Additionally, equip valves to the inlet and outlet piping. Equip an air purge cock on the inlet piping and a drain cock on the outlet piping. The cock handle should be removed so that the cock can not be opened under normal circumstances. If this cock is opened during operation, trouble will occur due to water blow-off.

6. Sufficiently perform insulation to keep the chilled water piping cool and to prevent sweating of the piping.7. Under the condition where the ambient temperature is low in winter, there is a case where equipment

and piping will become damaged during the shutdown periods at night, because the water in the pump or piping will be frozen. To prevent freezing of the water, it is effective to operate the pumps. HITACHI Chiller has the pump ON/OFF operation control (see wiring diagram) water from piping. Additionally, in a case where measures such as water draining are difficult, utilise antifreeze mixture of ethylene glycol type or propylene glycol type.

8. The common water pipes (Inlet/Outlet) are field supplied (only for RCUE 180~400AG2B). Typical pipe working examples are indicated on page 15. It is not necessary to install any sensor in these common pipes for standard models.

Number of connections for models:

Models Water Inlet Water OutletRCUE 180, 210, 240AG2B 1 1RCUE 280, 320, 350, 400, 450AG2B 2 2

NOTE:Common Water Piping connecting each cooler is prepared as Option.

CAUTION:This product is equipped with plate type heat exchanger. In the plate heat exchanger, water flows through a narrow space between the plates. Therefore, there is a possibility that freezing may occur if foreign particles or dust are clogged. In order to avoid this clogging, 20 mesh water strainer shall be attached at the inlet of chilled water piping near the product. In case of punching metal type strainer, mesh hole size shall be Ø 1.5mm or less. Never use the salt type antifreeze mixture, because it possesses strong corrosion characteristics, and water equipment will be damaged.

Pressure Gauge

Strainer

Flexible Joint

Valve

Installation

Technical Catalogue

6

TCGB0054 rev.0 - 08/2010 43

CAUTION:In case of connecting some units to the same water piping, design the water piping so that the water distribution to each unit is equal (refer to figure below) Imbalance of water distribution may cause a serious damage like a water freezing in the heat-exchanger.

6.4. Typical common water piping

RCUE280, 320, 350, 400, 450AG2B

a b Flange sizeConnecting

pipe diameter (mm)

RCUE280AG2BRCUE320AG2BRCUE350AG2B

10240 4745 6” 168.3

RCUE400AG2BRCUE450AG2B

12640 5945 8” 219.1

Chiller Unit

Water Pump

Heat Load Side

Dim

Model

Installation

Technical Catalogue

TCGB0054 rev.0 - 08/201044

6.5. Minimum internal system water volumeTo ensure the cooling operation at least 5 minutes without interruption, the internal chilled water volume in the piping system should be greater than the minimum volume as shown below.

Model RCUE-AG2B 180 210 240 280 320 350 400 450

Minimum Internal Water Volume 1,21 1,45 1,60 2,04 2,20 2,41 2,90 3,21

NOTE:Minimum internal system water volume written avobe is for standard ON/OFF differential.In case of changing ON/OFF differential, minimum internal water volume changes as following percentage.

Inlet ON/OFF Differential (set by Dip-switch 5, 3&4pins) 4°C 3°C 2°C 1°C

Minimum Internal Water Volume 50% 67% 100% 200%

To prevent frequent ON/OFF for no load or extremely low load operation, system internal water volume shall be more than above table.ON/OFF cycles shall be maximum 6 times per hour. (minimum 5 minutes operation and minimum 5 minutes thermostat OFF)

6.6. Water control

CAUTION:When industrial water is applied for chilled water and condenser water, industrial water rarely causes deposits of scales or other foreign substances on equipment. However, well water or river water may in most cases contain suspended solid matter, organic matter, and scales in great quantities. Therefore, such water should be subjected to filtration or softening treatment with chemicals before application as chilled water.It is also necessary to analyse the quality of water by checking pH, electrical conductivity, ammonia ion content, sulphur content, and others, and to utilise industrial water only if problem is encountered through these checks.

The following is the recommended standard water quality.

ItemChilled Water System Tendency (1)

Circulating Water (20 °C Less than) Supply Water Corrosion Deposits of Scales

Standard Quality pH (25 °C) 6.8 ~ 8.0 6.8 ~ 8.0

Electrical Conductivity (mS/m) (25°C)µS/cm (25 °C) (2)

Less than 40 Less than 400


Chlorine Ion (mg CI¯/I) Less than 50 Less than 50

Sulphur Acid Ion (mg SO42¯/I) Less than 50 Less than 50

The Amount of Acid Consumption (pH 4.8) (mg CaCO3/I)


Total Hardness (mg CaCO3 /I) Less than 70 Less than 70

Calcium Hardness (mg CaCO3 /I) Less than 50 Less than 50

Silica L (mg SIO2 /I) Less than 30 Less than 30

Reference Quality Total Iron (mg Fe/I) Less than 1.0 Less than 0.3

Total Copper (mg Cu/I) Less than 1.0 Less than 0.1

Sulphur Ion (mg S2¯/I) It shall not be detected.

Ammonium Ion (mg NH4+/I) Less than 1.0 Less than 0.1

Remaining Chlorine (mg CI/I) Less than 0.3 Less than 0.3

Floating Carbonic Acid (mg CO2/I) Less than 4.0 Less than 4.0

Index of Stability 6.8 ~ 8.0 -

NOTE:The mark “” in the table means the factor concerned with the tendency of corrosion or deposits of scales.The values shown in “ ” are for reference only according to the former unit.

Installation

Technical Catalogue

6

TCGB0054 rev.0 - 08/2010 45

6.7. BMS gateways

NOTE:The mark “” in the table means the factor concerned with the tendency of corrosion or deposits of scales.The value showed in “ ” are for reference only according to the former unit.

6.7.1. HARDC70-CE1 (OP) - Lon Works interface.

¡ General Features − Gateway interface with BMS LonWorks systems (installations with intelligent BMS control).

− With the HARC-70CE1 connection to a H-LINK network, it is possible to control 4 setting points and 7 monitoring points of up to 4 chillers.

− With the HARC-70CE1 OP connection to a H-LINK network, it is possible to control 4 setting points and up to 44 monitoring points of one chiller unit.

− The HARC-70CE1 (OP) remote controls offer the option of self-checking their own status.

¡ SystemThe following figure shows the internal configuration of the BMS connection used by the

HARC-70CE1(OP).

CAUTION:Make sure that the shielded cable is earthed.

There are two options for water chillers:

- HARC-70CE1

- HARC-70CE1 OP

The HARC-70CE1 OP is a LonWorks interface designed for cases where only the control of the units is required and there is no need for unit operation monitoring.

The HARC-70CE1 allows the control of up to 4 water chiller addresses

Monitoring equipment


Chiller unit 1

Chiller unit 1

Chiller unit 2

Chiller unit 3

Chiller unit 4

HARC-70CE1 OP

ModBus ModBus

Installation

Technical Catalogue

TCGB0054 rev.0 - 08/201046

¡ HARC-70CE1 (OP) Specifications

− Hardware specifications

Element Specification

Power supply 1~ 230V 50Hz

Energy consumption 10W (max.)

External dimensions Width: 170 mm, height: 75 mm, depth: 80 mm (Installed inside the box)

Weight 0.6 kg

Installation conditions Indoor

Temperature conditions 0~45 °C

Humidity conditions 10~80% (No dew)

− Telecommunications specifications for water chillers


Communication unit Water chillers

Communications cable Non polar, twisted and shielded 2 cable system

Telecommunications system Half-duplex telecommunications

Synchronous system Asynchronous communication system

Telecommunications speed 9,600 bps

Cable length 1,000 m (total length)

Connection quantityHARC-70CE1 type: Maximum of 4 chiller addressesHARC-70CE1 OP type: Maximum of 1 chiller address

− Telecommunication specifications for the upper system


Communication unit Upper monitoring equipment

Transmission protocol LonTalk (*) protocol

Access method Persistent CSMA/CD system planned

Coding system Differential Manchester Code

Telecommunications speed 78,000 bps

Maximum cable length 500 m (total bus length)

(*) “LonTalk” is an “Echelon Corporation” trademark in the USA and other countries.

Installation

Technical Catalogue

6

TCGB0054 rev.0 - 08/2010 47

¡ Control Signal

Control OperationON/OFF Chiller All HARC’S

Outlet Water Setting All HARC’S

State Monitoring

ON/OFF All HARC’S

Chilled Water Outlet Setting All HARC’S

Chilled Water Outlet Temperature All HARC’S

Chilled Water Inlet Temperature. All HARC’S

Alarm Codes All HARC’S

Operation Status All HARC’S

Discharge Pressure 1,2 Only HARC OP

Suction Pressure 1,2 Only HARC OP

Discharge Temperature 1,2 Only HARC OP

Suction Temperature 1,2 Only HARC OP

Compressor Status (ON/OFF) 1,2 Only HARC OP

Outlet Water Temp. 1 Only HARC OP

Water Temp. In Evap. Backside 1 Only HARC OP

¡ Installation

a. Space requirements

NOTE:- Bear in mind the safety summary warnings when selecting the installation site.- The installation site should be located in a place with an earthing connection.

Space required for the installation

b. Installation procedure 1. Install the HARC-70CE1 in an earthed metal box, bearing in mind the following HARC-70CE1 dimensions for

the box that it will be installed in.

POW

IRP PACCONTROL SYSTEM G/W

170

162

72 807

75

8

After opening

DOWN

UP

Identification number NEURON CHIP at the back of the cover

After opening

Terminals cover

Installation

Technical Catalogue

TCGB0054 rev.0 - 08/201048

2. Secure the HARC-70CE1 in accordance with the following instructions, depending on if it is mounted with screws or DIN rails.

170 44162

72 (87)2-M4

(170)

40(8

7)

Screw mounting DIN rail mounting

Central rail DIN line

c. Electrical Wiring

CAUTION:- All wiring work must be done in accordance with local regulations and the instructions of the electricity company.- A qualified electrician should carry out the electrical wiring.- Adjust the electrical leakage detector switch in accordance with local regulations.

1. The HARC-70CE1 should be installed between the power supply, the monitoring equipment, the water chiller and the earth connection.

2. Wiring connection

Nº Description Wire size

1~230V 50Hz power supply wiring (field supplied) 2 mm2 shielded

Connection with chiller, H- Link (field supply) 0.75 mm2 twisted-pair cablewith a maximum length of 1000 m

Connection wire with upper system (field supplied)

Installation

Technical Catalogue

6

TCGB0054 rev.0 - 08/2010 49

6.7.2 HC-A32MB - ModBus interface

¡ General features − Gateway interface with BMS ModBUS systems (installations with intelligent control or BMS). − With the HC-A32MB connection to a H-LINK network, it is possible to control 4 setting points and 16 monitoring

points. − With the HC-A32MB it can be controlled up to 8 AG2B chillers

¡ System

The following figure shows the internal configuration of the BMS connection used by the

HC-A32MB



Chiller unit 1

Chiller unit 1

Chiller unit 2

Chiller unit 3

Chiller unit 4

HARC-70CE1 OP

ModBus ModBus

CAUTION:Make sure that the shielded cable is earthed

¡ HC- A32MB SpecificationsHardware Specifications

Item SpecificationsPower supply 1~ 230 V ±10% 50Hz

Consumption 25 W (maximum)

Outer dimensions Width: 143 mm, Depth: 302 mm, Height: 76 mm

Weight 1.75 kg

Assembling conditions Indoors (in a control panel or desktop)

Ambient temperature 0~40 °C

Humidity 20~85% (Without condensation)

MODBUSItem SpecificationsK5 Serial Port RS485 (3 Pins connector) - MODBUS Protocol

Communication line Twisted pair cable. Polarity

Communicatrion system Half-duplex, multipoint serial connection

Communication method Non parity or odd/even parity selection. Data lenght: 8 bits - 1 stop bit

Baud rate transmission 19200/9600 Baud

Length max. 1200 m according EIA-485

H-LINKItem SpecificationsCommunication with HITACHI PACKAGED/CHILLER

Communication line Twisted pair shielded cable, non polarity

Communications system Half-duplex

Communication method Asynchronous

Speed of transmission 9600 Bauds

Length of wiring 1000 m maximum (total length of HLINK I/O bus)

Maximum number of HC-A32MB 8 HC-A32MB/H-LINK SYSTEM (PACKAGED)1 HC-A32MB/H-LINK SYSTEM (CHILLER)

Please use it correctly according to the following “CAUTION ON USE.”

Installation

Technical Catalogue

TCGB0054 rev.0 - 08/201050

¡ Control signal

Control Operation

ON/OFF Setting order

Mode setting order

Cool/Heat setting temperature

Central setting

State Monitoring

Exist

Chiller Adress

ON/OFF Status

Mode Status

COOL setting temperature status

HEAT setting temperature status

Intel temperature

Outlet temperature

Ambient temperature

Unit operation condition

Alarm code for general Chiller Alarm

Alarm code for cycle alarm

¡ Installation

a. Space requierements

NOTE:Bear in mind the safety summary warnings when the installation site.The installation site should be located in place with an earthing connection.

Keep free grated area for ventilation and cable connection

b. Installation procedure

Perform the following procedure:

1 Remove the rubber supports

2 Unscrew the 4 screws from the top cover and remove it

3 Attach the box to the rear vertical board from the inside with M4 screws (not provided) and place 3 mm washers on the outside to separate the box from the wall.

4 Reinstall the top cover. Be careful to position it correctly.

Installation

Technical Catalogue

6

TCGB0054 rev.0 - 08/2010 51

The dimensions of the Screw Mounting are showed in previous point.

c. Electrical wiring

Nº Connection Cable Specifications

1~ 230V 50Hz 25W Power supply wiring(With protection circuit)

Select wires accordiong local regulatrions(recommended minimum 1.5 mm² H05RN-F)

Connection with chiller, H-Link(field supplied)

Communication cables for the connection of HC-A32MB to an Hitachi installation. Twisted-pair shielded cable 0.75mm²

Connection wire with upper system(field supplied)

6.8. Remote controllers6.8.1. CSC-5S – Central Station

¡ General features:

− 8 chiller and 8 CSC-5S central remote control addresses can be connected on each H-LINK

− Up to 8 central remote controls (CSC-5S) can be connected to a H-LINK.

− Basic functions, heat/cold mode and temperature setting.

− When a problem occurs, an alarm code will immediately be displayed with detailed information about the error.

− A standard external input terminal is included for possible connection to a timer.

− The external signals control the following functions

- Start/Stop.

- Operation mode (Cooling/Heating).

- Temperature setting (Cold/Heat).

NOTE:AG2 chillers higher than 240HP uses 2 H-LINK addresses, so maximum 4 chillers higher than 240HP (AG2 series) can be controlled by 1 CSC-5S.

Installation

Technical Catalogue

TCGB0054 rev.0 - 08/201052

¡ CSC-5S Specifications

Unit operating indicator Individual control indicator Multiple unit control indicator Timer indicator Emergency stop indicator Operation indicator for each unit Demand indicator “No Function” indicator, in the even of a malfunction

Operation mode indication Indicates the operation mode selected for the indicated group: “Cool” (cooling), “Heat” (heating) and “H.RCV” (heat recovery) (not available).

Run indicator (red pilot).

“RUN/STOP” button .

“MODE” button (operation mode selection).

“A/C H.STRG” button (air-conditioning/heat storge).

“TIMER” button (timer selection).

“OPTION” button Used for selecting the different options.

Botón “GROUP” (para ajuste de grupos).

“MODE” button (button for changing display).

“TEMP” button (for setting groups).

“CHECK” button Used for service tasks.

“RESET” button (reset).

“UNIT SELECTION” button.

Temperature setting indicator Inlet/outlet temperature indicator “ABNML” alarm indicator “LOCAL” local indicator

¡ Installationa. Space requirements

Take note of the maximum admissible cable length between units and the control as well as between the units themselves, as shown in the following table:

Cable section 0.3mm² ≥0.75mm²

Cable length 30m 2 mm2 shielded

If several control units are to be installed in a vertical position, leave a distance of at least 50 mm between them to allow the front cover to be opened and to insert the tool for removing the control from its housing.

53

83.5

120

120

15

20

RUN/STOP UNIT SELECTION

EMG. STOP

MULTI

INDVDL

INLET

OUTLET

SET

TEMP.

TEMP.

PR. MPa

CHECKABNMLLOCAL

At least 50 mm

MODE CHANGE A/C H.STRG

TIMER OPTION GROUP

TEMP

CHECK

RESETDISP. MODE

RUN/STOP UNIT SELECTION

EMG. STOP

MULTI

INDVDL

INLET

OUTLET

SET

TEMP.

TEMP.

PR. MPa

CHECKABNMLLOCAL

Model: CSC-5S

Installation

Technical Catalogue

6

TCGB0054 rev.0 - 08/2010 53


1. Insert the flat headed screwdriver's tip info the grooves on the boltom of the bracket. Push and turn the screwdriver.Remove the part of the remote control linked to the power supply part, as shown in the following figure:

Central control

BraketGroove

Screwdriver

Groove

Braket

Screwdriver

Groove

Braket

2. Connect the power supply part to the control box, as shown below.

NOTE:Do not lay the power supply cable and the remote control cable in the same conduit

Power supply wire

Power supply part

Screws

Control cableControl box

3. Connect the control unit part to the power supply part. Position the top first and then the bottom.


CAUTION:- Do not position all the signal cables together with the power supply cable and other signal cables. The noise caused by these

cables could lead to the malfunction of the remote control and chiller unit. If the signal cables are next to the power cables and any other signal cables, maintain a distance of at least 15 cm between the signal cables and other cables, or pass the signal cables through a metal conduit which is earthed at one end.

- If the power supply cable is accidentally connected to the terminal board for the transmission signal and voltage is applied, the fuse will blow to protect the printed circuit board. In this case, this remote control can operate without the fuse, if pin no. 2 of DSW3 is set to the ON position.

- If the PSC-A1T remote control's timer is used, set the same address no. for the remote control and the timer.- Make sure that the wiring is correct (do place the signal cables together with the electricity cables). Incorrect wiring could cause

the remote control to malfunction- Before installing the wiring, switch off the power supply to the air conditioning system and central control unit.- Installing the wiring while the central control power supply is switched on may cause the central control unit to malfunction.

Electrical connection of the CSC-5S central remote control with the PSC-A1T timer

NOTE:- Up to 8 PSC-A64S central control units and one CSC-5T timer can be connected to one H-Link.- When installing the timer on an RPK unit, first disable the wireless remote control and then connect a different remote control.

The timer can then be connected to the other remote.

Outdoor units (up to a max. of 8 units)

Outdoor units (up to a max. of 8 units)PSC-A1T CSC-5T

Twisted pair cable1P-0,75 mm²(max. 100 m)

Accessory cable(1 m) Power source

220 or 240VcaTo TB2 of another remote control

ConnectorTerminal

NOTE:Always use 0.75 mm2 twisted pair cable.- Use the field supply cable for connection if the CSC-5S central remote control is used together with the PSC-A1T.- The maximum total length of the wiring for all units is 1000 metres.

6.8.2. CSNET Web – Computer central control

¡ General features

− CSNET WEB is an independent centralised control system which can control an H-LINK communication line. When it is connected to a system with package units, it can control up to 160 indoor units and up to 8 water chillers.

− CSNET WEB uses JAVA technology to control and monitor remotely operation of the installation.

− Can be connected to a Local Area Network through its Ethernet port. After configuring the network, the system will be accessible from any site in the company’s network.

− TIMER which is easier to program the calendar. It can memorize up to 4 years of programming and lets you choose an annual timer independently for each unit and day.

− Building layout view.

Installation

Technical Catalogue

6

TCGB0054 rev.0 - 08/2010 55

¡ System

The following figure shows the different connection of CSNET WEB

Air conditioning unit



Remote PC

Company’s LAN

Remote PC

Remote PC

Remote PC Remote PC

Firewall

Internet . . .

CSNET WEB

Firewall

Ethernet

¡ CSNET Web Specifications Hardware specifications

Elements Specifications

Alimentació de potència AC 230 V 1~ ±10% (50Hz)Consumption 20W (maximum)External dimensions Width: 240 mm, Length: 204 mm, Alt: 74,5 mmWeight 1,94 kgInstallation conditions Indoors (in a control panel, table-top)Ambient temperature 0~40 °CHumidity 20~85% (Sense condensation)

Specifications for communication with the unitsElements Specifications

Communication with H-LINK (H-LINK II compatible) (1)Communication cable Dos fils, sense polaritatCommunication system Half-duplexCommunication method AsíncronTransmission speed 9600 BaudsCable length Maximum 1000 m (total length)Number of units Up to 64 outdoor units and 160 indoor units or up to 8 water chillers (1)

Communication specifications with a local area network

Elements Specifications

Remote computer Processor at 100 MHz, 256 MB RAM, 200 Mb free and disc space. Windows 200 or higher, with Java Runtime Environment (2) version 6 Update 3 or higher Installed (included in the CD-ROM)

(1) Either package units or water chillers only can be connected in an H_LINK communication line. Mixed connection of package units and water chillers is not permited(2) Java(R) is a registered trade mark of Sun Microsystems

Installation

Technical Catalogue

TCGB0054 rev.0 - 08/201056

¡ Installation

a. Space requirements

Make sure that there is sufficient space around the CSNET WEB (a minimum of 50 mm) for heat to dissipate properly (see “Installation procedure”). If the equipment is installed vertically, situate the power feed below and the control outputs above.


1 Remove the rubber base pads

2 Remove the 4 screws from the cover and take it off

3 Secure the box to the vertical back plate from inside with M5 screws (not supplied), using 3 mm washers outside to separate the box from the wall.

4 Replace the cover. Be careful to position the top correctly.

AC IN

3m

m


Nº Connection Cable Specifications

Transmission cable for the units (H-Link)

Twisted pair cable1P-0.75 mm². Without polarity.Insulated and earned at one end.To select the type of cable, see the Outdoor Unit Installation and Operation Manual.

LAN line

Category 5 or above LAN cable − A cross-over cable is needed for direct

connection to a PC. − A direct cable is needed for connection

to a comercial distributor (Hub)

Network cable 2 phases + earth

AC 230V 1~50HzMake sure that the cable used complies with local regulations and that both the plug and socket are correctly earthed

After making the connections, replace the cover

NL

LAN

CSNET WEB

Plug, power base andearthing should complywith local regulations

Local area

Network

Air conditioning units

12

3

Test Running

Technical Catalogue

7

7. Te s t R u n n i n g

TCGB0054 rev.0 - 08/2010 57

7. Test Running ................................................................................................................577.1. Preparation .............................................................................................................................................. 58

7.2. Test Running ............................................................................................................................................ 58

7.3. Instructions After Test Running ................................................................................................................ 58

Contents

Test Running

Technical Catalogue

TCGB0054 rev.0 - 08/201058

7.1. Preparation

¡ Tools and instruments − High Pressure Compound Gauge. Low Pressure Compound Gauge. Electrical

Tester and General Tools. − Remove the foreign particles and substances from the water piping, without going

through the water coolers and clearing the water strainer filter before running. Check to ensure that no foreign particle and substance exists in the water piping.

7.2. Test Running

Test running should be performed as follows:1. Fully open the liquid lined stop valve on chiller.

2. Switch on Main Switch (M.I.) to electrical power supply.

3. Check that compressor fuses are not blown. Check that also fuses protecting power fans and control circuit are not blown.

4. Check correct phase connection. Each rotation direction of two rotors in the compressor is fixed so that a reversal phase protection device is equipped. However, the rotation direction should be checked as follows: Confirm that phases R/L1, S/L2 and T/L3 are correctly connected. If not, the compressors do not start due to the activation of the reverse phase protection in chiller control. Switch off electrical power into the power supply cables and exchange two of the three phases on the Main Switch terminals at the field connection side of the unit.

5. Switch on the field-supplied water pump. Check the correct pump operation.

6. Check to ensure that the chilled water flows sufficiently.

7. Operate other auxiliary equipment such as fan coil units and air handling units and check they operate properly.

8. Compressor oil should be heated before compressor starting. Keep 12h compressor crankcase heater operating before compressor starting every time after long time of chiller power off.

9. Set the desired water temperature on the LCD.

10. Depress the “ON” push button. The condenser fans will start to operate and the compressor will be started. (The minimum and standard starting delay time is 3 minutes, for more delay check Chapter 8).

11. Check the rotation direction of the condenser fans.

12. Check to ensure that the water temperature control works properly.

13. Check to ensure that the control and protection devices work properly.

7.3. Instructions After Test Running

When the test running is completed, please instruct customers about operation and periodic maintenance methods before leaving the unit, by using this manual. A special attention is required to the following caution:

CAUTION:Do not cut off the power source switch during the operating season. When the power source switch is cut off, the oil heater for screw compressor is not energised, and the compressor might be damaged due to oil foaming at starting.When the operation season starts after long disconnection of the power source switch, please turn on the power source switch 12 hours before starting operation.

CAUTION:Switch On the main power switch, and energise the oil heater for 12 hours before start-up, to sufficiently warm the oil.Check to ensure that valves are correctly opened. If not opened, serious damage will occur to the compressor due to an abnormally high pressure.

DANGER:Switch OFF main interruptor (M.I) for any work inside Electrical Box.

CAUTION:When the unit is wired according to the HITACHI standard wiring shown on the wiring label. Switch ON the main power switch, and energise the oil heater for 12 hours before start-up to sufficiently warm the oil.

NOTE:A loud sound occurs when this compressor is stopped after the normal operation. However, this sound indicates no abnormalities and stops within a few seconds by the activation of the check valve. This sound is due to the reverse rotation of the screw rotors, resulting from the pressure difference between the discharge and the suction pressure.Each compressor may show the different valves of running current due to individual capacity control for each compressor. This is not abnormal.

Controller Adjustment

Technical Catalogue

8

8. C o n t r o l l e r A d j u s t m e n t

59TCGB0054-rev0-08/2010

Contents

8. Controller adjustment ..................................................................................................598.1. Control System ........................................................................................................................................ 60

8.1.1. Capacity Control........................................................................................................................................... 608.1.2. Control Panel ............................................................................................................................................... 608.1.3. Control Structure .......................................................................................................................................... 68

8.2. Control Adjustment .................................................................................................................................. 69

8.2.1. Unit Factory Settings .................................................................................................................................... 698.2.2. Unit Configuration Details ............................................................................................................................ 71


Technical Catalogue

TCGB0054-rev0-08/201060

8.1. Control SystemElectrical Operation Controls of HITACHI Water Chillers are as follows.

8.1.1. Capacity Control

All models are equipped with an unloading system for each compressor, in order to adjust the cooling capacity and to provide precise temperature control for the chilled water, coupled with electronic thermostats.

Electrical Operation Controls advanced HITACHI Water Chillers are as follows.

Wat

er o

utle

t tem

pera

ture

Hitachi Continuous Capacity Control

Continuous Control

Load up 1

Load up 2

Neutral band

Check Water Control Configuration parameters on Chapter 8.2

8.1.2. Control Panel

¡ Operation buttons and lamps

ON switch, OFF switch, Power Supply Lamp, Operation Lamp, Alarm Lamp, Operation/Alarm Indicator for each refrigerant cycle and check switch are mounted in the Control Panel. The Control Panel is located at a position where easy access is available.

Time


Technical Catalogue

8

61TCGB0054-rev0-08/2010

¡ LCD (Liquid Control Display)

Operation and configuration unit data can be checked in LCD

Initial Screen

(2 sec.)

Initial Screen

(1 sec.)

Initial Screen

2010.03.10 20:15

PUMP STATEUNIT STATECOOLINGLOCAL

MENU W Temp Set OP. Info

STOPSTOP

<OP Info>

<W Temp Set>

<MENU>

OP. Info Screen

W Temp Set Screen

Menu Screen

Initial Screen

< 8 > <MENU>

MENU

SETTING UNIT INFO ALARM LOG CAUTION LOG

Bilingual SERVICE MENU

<SETTING>

<CAUTION LOG>

<UNIT INFO>

<ALARM LOG>

<BILINGUAL>

<SERVICE MENU>

Setting Screen

Unit Info Screen

Alarm Log Screen

Caution Screen

Bilingual Screen

Service Menu Screen


Technical Catalogue

TCGB0054-rev0-08/201062

MENU

< 8 ><SETTING>

Setting Screen

W Temp Set CT Set

Optional Function

Optional Function Screen

< 8 > <W Temp Set>

W Temp Set Screen 1/3 CT Set Screen

CW OUTTemp Set

12.0º C

SET

0 A 30 min

No. 1CT Time

No. 1CT Set

SET

< t > < t >

W Temp Set Screen 2/3Modify Data:

or + SETON/OFF Dif

2º C 2º C 1º C 1º C

N.Zone BandStop Temp Band

Load Up 2 Band

< t >

W Temp Set Screen 3/3

Load Up 1Time

10 sec

SET

2 sec 2 sec 30 sec

Load Up 2Time

Load DownTime

Interval

<Optional Function>

<CT Set>

< 8 >


Technical Catalogue

8

63TCGB0054-rev0-08/2010

Setting Screen

< 8 > <Optional Function>

Optional Function Screen 1/4

SET

Temp. Disp.

Disable Pulse Enable

DC24V Input

RemoteON/OFF

PeriodicPump OP.

Enable

< t > 


ON

Pump OP. in ON/OFF Cont.

Pump Feed Back Waiting Time

1 minUnlimited

< t > 


Amb TempAdjustment

Min Cap. Limit

2 StepTH OFF

DisableDisableDisable

< t > 


TH OFFCW IN Temp

NO 12.0ºC Modify Data: or + SET

< 8 >


Technical Catalogue

TCGB0054-rev0-08/201064

MENU

< 8 > <UNIT INFO>

Unit Info Screen 1/8 Unit Info Screen 8/8

No. 1 Cycle

STOP

ROM No. LCD: 1272 CPU: 0034

FAN Statusfor FAN No.5 for FAN No.6

No Connectionfor FAN No.8for FAN No.7

No Connection

No Connection No Connection

< t > < No. 1 Cycle > < t >


CW IN Temp 999.9ºC

Ta 999.9ºC

OP. Load 0%

Order FAN Hz

0 HzRear Side

0.0ºCPipe Side 999.9ºC

CW OUT Temp

FAN Statusfor FAN No.2No Connectionfor FAN No.4No Connection

for FAN No.1No Connectionfor FAN No.3No Connection

< t > < t >


Temp Liquid

0.0 ºC

T Cooler IN

0.0ºCTs

0.0ºC

Td

0.0ºC

Pd

0.00 MPa

Ps

0.00 MPa

TdSH

0.0 ºC

TdºSH

0.0 ºC

Load Order

Min Cap.LimitNO

< t > < t >


Exp V PulseMain 10 Pulse

Main 20 Pulse

Economizer0 Pulse

Cooler BP0 Pulse

Forced L. -

Night ShiftNO

Protec. Cont. Status



COMP Hr COMPCurrent

0 A MAIN: 0000SUB: 0000

ROM No.

Period0.0 Hr

Start Freq.0cnt

Accum0.0 Hr



< 8 >


Technical Catalogue

8

65TCGB0054-rev0-08/2010

MENU

< 8 > <ALARM LOG>

Alarm Log Screen 1/5 Alarm Log Screen 5/8

No . 10 No . 9 0000.00.00 00:00 0000.00.00 00:00



No . 2 No . 1 0000.00.00 00:00 0000.00.00 00:00(...)



MENU

< 8 > <CAUTION LOG>

Caution Log Screen 1/5 Caution Log Screen 5/5

No . 10 No . 9 2000.00.00 00:00 2010.03.10 20:19

Failure of AmbTemp THM (CN6)

CPU-I/O PCBTransM Error



No . 2 No . 1 2000.00.00 00:00 2010.02.11 00:38

CPU-I/O PCBTransM Error

Failure of AmbTemp THM (CN6)

(...)



MENU

< 8 > <BILINGUAL>

Bilingual Screen

Bilingual

EnglishModify Data:

or + SET

< 8 >

< 8 >


Technical Catalogue

TCGB0054-rev0-08/201066

MENU

< 8 > <SERVICE MENU>(only first time)

Password Screen (only the first time)

1 2 3

4 5 AC

0

DEL

6

7 8 9Input PasswordPassword

To enter in the Service Menu, please contat to HITACHI Costumer Service

Initial Screen

< 8 > <W Temp Set>

W Temp Set Screen 1/4 W Temp Set Screen 4/4

CW OUT Temp Set

12.0ºC



Load Up 1 Time

Load Up 2 Time

Load Down Time

Interval

30 sec2 sec2 sec10 sec(...)



Modify Data: or + SET


Technical Catalogue

8

67TCGB0054-rev0-08/2010

Initial Screen

< 8 > <OP. Info>

OP Info Screen

No. 1 cycle

STOP

< 8 > <Nº.1 Cycle>

OP Info - No. 1 Cycle Screen 1/2

Ta999.9ºC

CW IN999.9ºC

Pd0.00 WPa

Td 0.0ºC

Ts 0.0ºC

Ps0.00 Mpa

CW OUT999.9º C

Op. Load 0%

< t >

OP Info - Nº. 1 Cycle Screen 2/2

COMP HrAccum 0.0 Hr

Period 0.0 Hr

COMP Current 0 A

< 8 >


Technical Catalogue

TCGB0054-rev0-08/201068

8.1.3. Control Structure

Printed Circuit BoardA micro-processor, relays and electronic components are mounted on the Printed Circuit Board. Increased reliability is assured due to the elimination of mechanical parts and wires. This board contains various functions by applying micro-processor as follows:

− Screw Compressor Cycling Protection Circuit. The electronic timer of the screw compressor cycling protection (ccp) connected in the compressor control circuit delays the screw compressor restarting period for approximately three (3) minutes for No.1 compressor and four (4) minutes for No.2 compressor.

− Electronic Expansion Valves and Variable Fan Speed Control. This series include electronic expansion valves control and variable fan speed motor for better performance and efficiency.

− Electronic Thermostat Circuit. The electronic thermostat senses chilled water outlet temperature, and operate capacity control solenoid valves of HITACHI screw compressor.

− Screw Compressor Reversing Protection Circuit. This circuit is composed of a reverse-phase protection device, preventing reverse operation of the screw compressor, because the screw compressor definitely cannot be operated in the wrong direction due to the misconnection of the main power phases.

− Restart after Power-Failure. In case that a power failure shorter than 2 seconds occurres, compressors can be restarted automatically within 3 minutes after power supply.


Technical Catalogue

8

69TCGB0054-rev0-08/2010

8.2. Control Adjustment

¡ Switch Position Table

SWITCH POSITION

ONOFF ON

ONOFF OFF

8.2.1. Unit Factory Settings

Table 1

MODELSTANDARD SETTING PCBa

(DSW 1) (DSW 2) (DSW 3) (DSW 4) (DSW 5) (DSW 6) (RSW 1)

RCUE 180AG2B

RCUE 210AG2B

RCUE 240AG2B

RCUE 280AG2B

RCUE 320AG2B

RCUE 350AG2B

RCUE 400AG2B

RCUE 450AG2B

Table 2 Table 3 Table 4

MODELSTANDARD SETTING PCBe

MODELSTANDARD SETTING PCBc

MODELLCD

(DSW2) (DSW200) (DSW7) (DSW8) (DSW9) CT

PCBe n1 RCUE 180AG2B RCUE 180AG2B 279









Technical Catalogue

TCGB0054-rev0-08/201070

Table 5

MODELSTANDARD SETTING PCBd1 STANDARD SETTING PCBd2

(DSW 1) (DSW 2) (DSW 3) (DSW 1) (DSW 2) (DSW 3)

RCUE 180AG2B

ON

ON

ON

__ __ __

RCUE 210AG2BON

__ __ __

RCUE 240AG2BON

____

__

RCUE 280AG2BON

ON

ON

ON

RCUE 320AG2BON ON

RCUE 350AG2BON ON

RCUE 400AG2BON ON

RCUE 450AG2BON ON


Technical Catalogue

8

71TCGB0054-rev0-08/2010

8.2.2.UnitConfigurationDetails

¡ PCBa Settings

Nº Dip Switch Description

Self checking mode

PSW1 PSW2

Consult to HITACHI Customer Service for self checking mode functions

High cut check

PSW3 PSW4

Fan stop for High Pressure cut checking

Manual defrost

PSW5 PSW6Manual defrost. Not available

Pump operation

SW1

ON

OFF

Manual Pump OperationStandard: OFF

Local/Remote changeover switch

SW2

LOCAL

REMOTE

Local/Remote Control:Standard: RemoteLocal: This mode allows unit ON/OFF from buttons in electrical box.

NOTE: OFF functions are available in both modes.

Cool/Heat changeover switch

SW3

COOL

HEAT

Cooling Mode: StandardHeating Mode: Not available


Technical Catalogue

TCGB0054-rev0-08/201072


Manual set A

DSW1

Cycle 1 disabled Cycle 1 enabled

Cycle 2 disabled Cycle 2 enabled

~ Not available (DSW1-3, 4: All OFF)

Number of cycles configuration.

Pin Cycle PCB

1 1 cycle

2 2 cycles

H-Link address

Pin Address Pin Address

000 100

001 101

010 110

011 111

Manual set B

DSW2

Cooling only models Not available

Not available Continuous capacity control

Standard Not available

Standard Enabling Low Water Temperature Opt.



Refrigerant 407C Not available

Water Outlet temperature control Water Inlet temperature control

Air cooled Not available


Master

Not available

Compressor starting delay:

DSW3

Pin Time

1 23 min. 3 min. option: Standard

1 26 min.

1 210 min.

1 230 sec. 30 sec. configuration is just for testing without

compressor connection

PIN 3: European power supply (ON, Standard)PIN 4: Not available


Technical Catalogue

8

73TCGB0054-rev0-08/2010


Optional Function B:

DSW4

Low Water Temperature Opt. range:

Pin Tº

- 5 ºC

- 10 ºC

NOTE: Only available when DSW2-4 (PCBa) is ON.

Not available European models

Optional Function C:

DSW5

Power failure recovery Not available

Thermo OFF time setting Not available


Remote control by H-LINK disabled (Only monitoring data allowed)

Remote control by H-LINK (To apply with H-LINK control devices)

Optional Function D:

1 2 3 4 5

DSW6

DSW6 not available


Technical Catalogue

TCGB0054-rev0-08/201074

¡ PCBc Settings


External H-Link terminal set

DSW7

H-Link end resistance OFF (Standard)

H-Link end resistance ON

NOTE: Switch ON when using H-LINK devices

Standard H-Link fuse short-circuit

Internal H-Link terminal set

DSW8

H-Link end resistance OFF H-Link end resistance ON (Standard)

Standard H-Link fuse short-circuit

DSW9

DSW9 - Not available


Technical Catalogue

8

75TCGB0054-rev0-08/2010

¡ PCBd Settings


DSW1

Disable DC Fan 1~8 Enable DC Fan 1~8

DSW2

Number of cycles configuration

Pin Cycle PCB Nº

1 1st. cycle

2 2nd. cycle

Unit Model

Pin Model Power Pin Model Power

N.A. 180/350

280 210/400

320 240/450

Not available European models

Other settings not available (DSW2-7~8: All OFF)

DSW3

Automatic expansion valve 1 (standard) Manual expansion valve 1




Other settings not available (DSW3-6~8: All OFF)


Technical Catalogue

TCGB0054-rev0-08/201076

¡ PCBEn Settings


DSW200

Address settings

Pin Address PCBe

01 1/5

03 2/6

05 3/7

07 4/8

DSW2

European Power supply (Standard configuration)


Technical Catalogue

8

77TCGB0054-rev0-08/2010

¡ LCD Factory SettingsWater temperature configuration:

LCD Screen Description

W Temp Set (Screen 1)

CW OUTTemp Set

7.0º C

SET

Water temperature setting

Optional 2nd temperature setting

, . Not available


SETON/OFF Dif

2º C 2º C 1º C 1º C

N.Zone Band Stop Temp Band

Load Up 2 Band

Temperature band for compressor re-start

Neutral band

Temperature for thermo-OFF

Temperature band for Load Up 2 Mode


Load Up 1Time

10 sec

SET

2 sec 2 sec 30 sec

Load Up 2Time

Load DownTime

Interval

SV up frequency for Load Up Mode 1

SV up frequency for Load Up Mode 2

SV down frequency for Load Down Mode

Internal period for Load Mode

¡Watertemperaturecontrolconfiguration

Current Protection configuration:


0 A 30 min

No. 1CT Time

No. 1CT Set

SET

Current sensor protection for cycle 1 (Check PCB Factory Settings table 4)

CT protection time for cycle 1

Current sensor protection for cycle 2 (Check PCB Factory Settings table 4)

CT protection time for cycle 2

Neutral band


Technical Catalogue

TCGB0054-rev0-08/201078

Optional Functions configuration:


Optional Function (Screen 1)

SETTemp. Disp.

Disable Pulse Enable

DC24VInput

RemoteON/OFF

PeriodicPump OP.

Enable

Water temperature displayed at Initial Screen

Input signal mode for remote control ON/OFF

Remote control mode

Periodical Pump operation in winter time at low ambient temperature.


ON

Pump OP.in ON/OFF Cont.

Pump Feed Back Waiting Time

1 minUnlimited

Pump operation linked to chiller operation (TB terminals 3 and 4)

Pump feedfack signal

Time for pump feedback


Amb TempAdjustment

Min Cap. Limit

2 StepTH OFF

DisableDisableDisable

Ambient temperature adjustment

Not available

Thermo off in 2 steps (for 2 cycles models only)


TH OFFCW IN Temp

NO 12.0ºC

Additional thermo off condition by Water Inlet Temperature

Self-Inspection FunctionsTechnical Catalogue

9

9. S e l f - I n s p e c t i o n F u n c t i o n s

79TCGB0054 rev.0 - 08/2010

9. Self-Inspection functions .............................................................................................799.1. Alarm Screen ........................................................................................................................................... 80

9.2. Alarm Indication ....................................................................................................................................... 80

9.3. Normal Indication..................................................................................................................................... 82

9.4. Function for indication of operation condition .......................................................................................... 82

Contents


Technical Catalogue

TCGB0054 rev.0 - 08/201080

9.1. Alarm ScreenIf the unit is operated under abnormal conditions, an alarm code (refer to the table below) is indicated and the LCD Alarms Screens. The "Alarm" lamp will be lighted and LCD Screen is lighted in red.

9.2. Alarm Indication7-Segment on PCBa shows the Alarm code as follows:

Self-Inspection FunctionsTechnical Catalogue

9

81TCGB0054 rev.0 - 08/2010

CodeContentNo.1

CycleNo.2Cycle

Activation of High Pressure Switch

Activation of Low Pressure Protection Control

Excessively Low Pressure

4 4 Activation of fan Internal Thermostat (Option)

5 5Activation of Thermal Relay for Compressor orMalfunction of Auxiliary Relay ARn

6 6 Activation of Discharge Gas Thermistor

7 7 Activation of Compressor Internal Thermostat

9 9 Excess Low Temperature of Cooler Inlet Refrigerant

t t Activation of Suction Gas Thermistor

03 03 Transmission Error between Main PCB and I/O PCB

05 05 Phase Abnormally

Failure of Water Outlet Thermistor (Only for 2 cycle unit)

3 3 Activation of Freeze Protection Control (More than 2 Cycle Unit)

4 4 Excessively High Water Temperature

Failure of Cooler inlet Refrigerant Thermistor (Open / Short)

3 3 Failure of Discharge Gas Thermistor (Open / Short)

4 4 Failure of Thermistor set before Expansion Valve

5 5 Failure of Water Outlet Thermistor (Rear side of Water Cooler)

6 6 Failure of Suction Gas Thermistor (Open / Short)

7 7 Failure of Discharge Gas Pressure Sensor (Open / Short)

8 8 Failure of Suction Gas Pressure Sensor (Open / Short)

f0 f0 Incorrect Setting of Fan Number

f f Fan Inverter Rotation Abnormally *1

f f Activation of Fan Inverter Over Current Protection Control *1

f3 f3 Fan Inverter Phase Abnormally *1

f4 f4Error Communication between Inverter PCB and Control or Fan Control PCB *1

f5 f5 Inverter Power Supply Abnormally *1

“”-”” : Flickering , *1 : Right side segment shows Fan No.


Technical Catalogue

TCGB0054 rev.0 - 08/201082

CodeContentNo.1

CycleNo.2Cycle

00 Failure of Auxiliary Relay for starting.

0505 Phase Abnormally

0303Error Communication between Chiller and Remote Controller (If CSC-5S is connected.)

Failure of Water Inlet Temperature Thermistor

Failure of Water Outlet Thermistor. (Only for Single Cycle Unit)

33 Activation of Freeze Protection Control (Only for Single Cycle Unit)

44 Alarm of Excessively High Water Temperature

Failure of Ambient Temperature Thermistor (Open / Short)

5p5p No Feedback Signal from Water Pump

4040 Incorrect Operation

6e6eAlarm of Water Failure(Differential Pressure Switch or Flow Switch Option)

APAP Activation of Additional Protection Device

P5 P5 Retry Operation (by Alarm Cx-6x or Cx-7x, x: Cycle No.)

P6 P6 Retry Operation (by Alarm Cx-9x or Cx-Lx, x: Cycle No.)

FP7 fP7 Retry Operation (More Than 3 Fans Retry at The Same Time)

FP8 fP8 Retry Operation (by Alarm Fx-41 or Fx-51, x: Cycle No.)

“”-”” : Flickering , *1 : Right side segment shows Fan No.

9.3. Normal Indication

If the unit is operated under a normal operation condition, the operation code (refer to the table below) is indicated on 7-Segment LED’s of the control panel.

CodeContentNo.1

CycleNo.2Cycle

88 88 Power Supply, After Stoppage

Cooling Operation

f f Stoppage by Thermo-OFF

44 Pump Operation, Warning of Pump Feedback

t t Activation of Current Limiter

E0 E0 Initializing Electronic Expansion Valve

9.4. Function for indication of operation condition

The Control adjustments and the navigation into LCD are described in the Chapter 8.1.2.

Control System

Technical Catalogue

10

10. C o n t r o l S y s t e m

83TCGB0054 rev.0 - 08/2010

10. Control System ..........................................................................................................8310.1. Standard operation sequence RCUE180, 210, 240AG2B .................................................................... 84

10.2. Standard operation sequence RCUE280, 320, 350, 400, 450AG2B .................................................... 85

Contents

Control System

Technical Catalogue

TCGB0054 rev.0 - 08/201084

10.1. Standard operation sequence RCUE180, 210, 240AG2B

Con

trol

Sta

ge

Con

trol

Dev

ices

Star

ting

Con

trol

Cap

acity

Con

trol

Safe

ty D

evic

esSh

ut D

own

Mai

n P

ower

S

witc

hM

IO

FFO

N-

--

--

--

--

--

--

--

ON

ON

ON

OFF

Ope

ratio

n S

witc

hP

BS

--

ON

--

--

--

--

--

--

-O

FFO

NO

FF-

-

Con

trolle

rLo

ad U

p-

--

--

!!

--

--

-!

--

--

--

Neu

tral

--

--

--

-(

--

--

-(

-(

--

-Lo

ad D

own

--

--

--

--

!!

--

--

--

--

-S

afet

y D

evic

esN

o.1

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

OP

NC

LSC

LSC

LSC

LSC

LSC

hille

d W

ater

Pum

pC

PU

EO

FFO

FFO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

FFO

FFP

ower

S

uppl

y In

dica

tor

OFF

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

OFF

Ope

ratio

n In

dica

tor

OFF

OFF

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

ON

OFF

OFF

OFF

Ala

rm

Indi

cato

rO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

NO

FFO

FFO

FFO

FFO

FF

Oil

Hea

ter

CH

1O

FFO

NO

NO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

NO

FFO

FFO

FFO

FFO

NO

NO

FFO

NO

NO

FF

Com

pres

sor M

otor

MC

1S

TAD

LTD

LTD

LTD

LTD

LTD

LTS

TAD

LTD

LTS

TA/D

LTO

FFO

FFD

LTO

FFO

FFO

FF(U

LD)

(ULD

)(U

LD)

(FLD

)(F

LD)

(ULD

)(U

LD)

OFF

(ULD

)(U

LD)

(ULD

)(U

LD)

OFF

OFF

(ULD

)O

FFO

FFO

FF15

%15

%15

~99%

100%

100%

15~9

9%15

%15

%15

~99%

15~9

9%15

~100

%15

~99%

Fan

Mot

orM

F11~

14O

FFO

FFO

N

OFF

OFF

ON

OFF

OFF

OFF

Sol

enoi

d Va

lve

SV

11O

FFO

FFO

NO

NO

NO

FFO

FFO

FFO

FFO

FFO

NO

NO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFS

V12

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

SV

13O

FFO

FFO

FFO

FFO

FFO

NO

NO

FFO

FFO

FFO

FFO

FFO

NO

FFO

FFO

FFO

FFO

FFO

FFO

FFTi

me

Sch

edul

e

CLS

: Clo

seO

PN

: Ope

nS

TA: S

tar

DLT

: Del

taU

LD: U

nloa

dFL

D: F

ull L

oad

!: C

hang

ing

Com

pres

sor L

oad

(: K

eepi

ng C

ompr

esso

r Loa

d

3 m

in5

s

30 s

10 s

Min

imum

3 m

inut

es

10.2. Standard operation sequence RCUE280, 320, 350, 400, 450AG2B

Con

trol

Sta

ge

Con

trol

Dev

ices

Star

ting

Con

trol

Cap

acity

Con

trol

Safe

ty D

evic

esSh

ut D

own

Mai

n P

ower

S

witc

hM

IO

FFO

N-

--

--

--

--

--

--

--

--

-O

NO

NO

NO

FFO

pera

tion

Sw

itch

PB

S-

-O

N-

--

--

--

--

--

--

--

-O

FFO

NO

FF-

-

Con

trolle

rLo

ad U

p-

--

--

--

!!

--

--

-!

--

--

--

Neu

tral

--

--

--

--

-(

--

--

-(

-(

--

-Lo

ad D

own

--

--

--

--

--

!!

--

--

--

--

-

Saf

ety

Dev

ices

No.

1C

LSC

LSC

LSC

LSC

LSC

LSC

LSC

LSC

LSC

LSC

LSC

LSC

LSC

LSC

LSC

LSC

LSO

PN

OP

NC

LSC

LSC

LSC

LSC

LSN

o.2

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

CLS

OP

NC

LSC

LSC

LSC

LSC

LSC

hille

d W

ater

P

ump

CP

UE

OFF

OFF

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

Pow

er S

uppl

y In

dica

tor

OFF

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

OFF

Ope

ratio

n In

dica

tor

OFF

OFF

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

ON

OFF

OFF

OFF

Ala

rm In

dica

tor

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

OFF

Oil

Hea

ter

CH

1O

FFO

NO

NO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

NO

FFO

FFO

FFO

FFO

NO

NO

NO

FFO

NO

NO

FFC

H2

OFF

ON

ON

ON

ON

OFF

OFF

OFF

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

OFF

OFF

ON

ON

OFF

ON

ON

OFF

Com

pres

sor M

otor

MC

1O

FFO

FFO

FFS

TAD

LTD

LTD

LTD

LTD

LTD

LTD

LTD

LTO

FFS

TAD

LTD

LTS

TA/D

LTO

FFO

FFO

FFD

LTO

FFO

FFO

FF(U

LD)

(ULD

)(U

LD)

(ULD

)(U

LD)

(FLD

)(F

LD)

(ULD

)(U

LD)

(ULD

)(U

LD)

(ULD

)(U

LD)

(ULD

)15

%15

%15

%15

%15

~99%

100%

100%

15~9

9%15

%15

%15

~99%

15~9

9%15

~100

%15

~99%

MC

2O

FFO

FFO

FFO

FFO

FFS

TAD

LTD

LTD

LTD

LTD

LTD

LTO

FFS

TAD

LTD

LTS

TA/D

LTS

TA/D

LTO

FFO

FFD

LTO

FFO

FFO

FF(U

LD)

(ULD

)(U

LD)

(FLD

)(F

LD)

(ULD

)(U

LD)

(ULD

)(U

LD)

(ULD

)(U

LD)

(ULD

)(U

LD)

15%

15%

15~9

9%10

0%10

0%15

~99%

15%

15%

15~9

9%15

~99%

15~1

00%

15~1

00%

15~9

9%

Fan

Mot

orM

F11~

16O

FFO

FF

ON

O

FFO

FFO

FFO

NO

FFO

FFO

FFM

F21~

26O

FFO

FFO

N

OFF

OFF

ON

OFF

OFF

OFF

Sol

enoi

d Va

lve

SV

11O

FFO

FFO

NO

NO

NO

NO

NO

FFO

FFO

FFO

FFO

FFO

NO

NO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFS

V12

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

SV

13O

FFO

FFO

FFO

FFO

FFO

FFO

FFO

NO

NO

FFO

FFO

FFO

FFO

FFO

NO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFS

V21

OFF

OFF

ON

ON

ON

ON

ON

OFF

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

SV

22O

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

NO

NO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFO

FFS

V23

OFF

OFF

OFF

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

Tim

e S

ched

ule

CLS

: Clo

seO

PN

: Ope

nS

TA: S

tar

DLT

: Del

taU

LD: U

nloa

dFL

D: F

ull L

oad

!: C

hang

ing

Com

pres

sor L

oad

(: K

eepi

ng C

ompr

esso

r Loa

d

3 m

in5

s5

s

30 s

60 s

10 s

Min

imum

3 m

inut

esTh

e C

ompr

esso

r whi

ch s

tarte

d fin

ally

will

be

rest

arte

d fir

st

Maintenance

Technical Catalogue

11

11. M a i n t e n a n c e

TCGB0054 rev.0 - 08/2010 87

11. Maintenance ..............................................................................................................8711.1. Components .......................................................................................................................................... 88

11.2. Lubrication ............................................................................................................................................. 88

11.3. Deposit ................................................................................................................................................... 88

11.4. Cleaning Method .................................................................................................................................... 89

11.5. Winter Shutdown ................................................................................................................................... 91

11.6. Spring Start-Up ...................................................................................................................................... 91

11.7. Part Replacement .................................................................................................................................. 91

11.8. Refrigeration Cycle ................................................................................................................................ 91

11.9. Refrigerant Cycle Diagram Of Hitachi Air-Cooled Water Chiller (RCUE210, 280, 320, 400AG2B) ........................................................................................................ 92

11.10. Refrigerant Cycle Diagram Of Hitachi Air-Cooled Water Chiller (RCUE180, 240, 350, 450AG2B) with ECONOMIZER......................................................................... 93

11.11. Compressor Removal .......................................................................................................................... 94

11.12. Safety and protection control ............................................................................................................... 95

11.13. Normal Operating Pressure ................................................................................................................. 96

11.14. Test Running And Maintenance Record .............................................................................................. 97

11.15. Daily Operating Records ...................................................................................................................... 98

11.16. Servicing for R407C Refrigerant System ............................................................................................. 99

Contents

Maintenance

Technical Catalogue

TCGB0054 rev.0 - 08/201088

The unit should be periodically inspected according to the same items as those described in the paragraph titled“Test Running”. In order to ensure dependable performance and long life operation, the following additional items should be given for particular attention.

11.1. Components

¡ Compressor

The semi-hermetic screw compressor requires periodic maintenance, including replacement of parts. See the HITACHI Service Handbook for Screw Compressors, for details.

¡ Air-cooled Condenser

Inspect the condenser and remove any accumulated dirt from the coil, at regular intervals. Other obstacles such as growing grass and pieces of paper, which might restrict Air flow, should also be removed.

¡ Electrical Equipment

Always pay careful attention to working voltage, amperage and phase balance. Check for faulty contact caused by loosened terminal connections, oxidised contacts, foreign matter, and others.

¡ Control and Protective Devices

Do not readjust the settings in the field unless the setting is maintained at the point other than the point listed in the table on chapter 8.

11.2. Lubrication

¡ Compressor

The compressors are charged at the factory with the correct oil listed on the compressor nameplate. It is not necessary to add oil, if the refrigerant cycle remains sealed.

¡ Fan Motor

Bearing of all fan motors are pre-lubricated. Lubrication is not required.

11.3. DepositLime and other minerals in the chilled water tend to deposit on surfaces of plates over a long period of operation. As deposits of these minerals increase, excessive lower operation pressure are detected, indicating evidence of deposits on the water cooler.

CAUTION:Cleaning of plate type heat exchangers shall be performed by specialists. Please contact your contractor or dealer of HITACHI.Clean the water strainer filter periodically according to its clogging degree.

WARNING:This product is equipped with plate type heat exchangers. In the plate type heat exchanger, water flows through a narrow space between plates. Therefore, there is a possibility that freezing may occur if foreign particles or dust are clogged. In order to avoid this clogging, provide a 20 mesh water strainer at the inlet of the chilled water piping near to the product. If clogging in the plate type heat exchanger occurs seriously, this will cause insufficient cooling performance or local freezing in the plate type heat exchanger. It is strongly recommended that the heat exchanger is cleaned at the same time when the filter is cleaned.Pay attention to the following caution and normal cleaning method. For details, contact your Hitachi installer.

WARNING:If a fire accidentally occurs, turn OFF the main switch and use an extinguisher for an oil fire and an electric fire.Do not operate the unit near flammable gases such aslacquer, paint oil, etc. to avoid a fire or an explosion.Turn OFF the main switch when electrical box covers are removed for setting the temperature. Do not operate the unit without fixing panels.

DANGER:Switch OFF main interruptor (MI) for any work inside electrical box.Keep electrical box cover closed 2 min. after switching power off (to discharge the capacitors)

CAUTION:Perform periodical maintenance according to the “INSTRUCTIONS” to maintain the unit in a good condition.Do not touch the parts at the discharge gas side by hand, since the pipes at the discharge side are heated by refrigerant and the temperature becomes higher than 100 °C.Do not utilise this unit for cooling or heating of drinking water or food. Comply with local codes and regulations.Turn OFF all the main switches if refrigerant leakage or chilled water leakage occurs. Also, if the unit can not be stopped by the control switch, turn OFF all the switches for power source.

Maintenance

Technical Catalogue

11

TCGB0054 rev.0 - 08/2010 89

CAUTION:Correctly select cleaning agent depending on scales in the plate type heat exchangers. The cleaning chemicals are different depending on fouling degree.This plate type heat exchanger is made of stainless steel. Do not use a cleaning agent containing hydrochloric acid or fluorine compound. If used, the heat exchanger will be damaged, resulting in refrigerant leakage.After cleaning with cleaning agent, clean inside of water piping including the heat exchangers by using clean water. Perform water treatment (preventive treatment) in order to prevent the water circuit from corrosion or re-adhering of scales after cleaning.In the case that a cleaning agent is used, adjust concentration of the cleaning agent, cleaning period and temperature according to the scale degree.

In the case that acid cleaning is performed, neutralisation treatment is required after cleaning. Treatment for neutralisation fluid should be performed by a waste fluid contractors.The cleaning agent and neutralising agent have erosiveness and stimulativeness against eyes, skin, mucous membrane etc. Therefore use protection tools (protection glasses, protection gloves, protection shoes, protection cloth, protection mask, etc.) in order not to absorb or touch these agents during this cleaning work.

11.4. Cleaning Method

N° Name N° Name1 Chiller Unit 6 Waste Fluid Tank2 Chilled Water / Inlet Piping 7 Cleaning Water Tank3 Acid-resistant Type Water Pump 8 Hose4 Hose 9 Chilled Water / Outlet Piping5 Diluted Cleaning Fluid

Water Refrigerant

Maintenance

Technical Catalogue

TCGB0054 rev.0 - 08/201090

1. Installation of Cleaning Circuit

− Stop the water Chiller unit. − Stop the circulating water pump. − Disconnect the connections at the chilled water inlet and install a circulating water circuit by using an acid-

resistant type water pump.

2. Check of Circulating Circuit

− Pour water in the cleaning tank and operate the acid-resistant type water pump. − Check to ensure that no water leakage exists. − Check to ensure that the water hose is firmly fixed. − Check to ensure that the cleaning agent will not damage equipment near the water Chiller even if bubbles

occur and touch them. − Check to ensure that good ventilation is available. − Check to ensure that no abnormal sound occurs.

3. Cleaning Work

− Discharge water in the water circuit of the air conditioning system. − Supply diluted cleaning fluid from the cleaning water tank by operating the acid-resistant pump. − Circulate the cleaning fluid for an appropriate period of time (the operating time should be determined

according to the type of cleaning agent, concentration and fouling degree).

4. Waste Fluid

− Stop the acid-resistant pump. − Put the waste fluid into the waste fluid tank. − Supply water into the cleaning tank and operate the pump for water cleaning. − Put the cleaning water into the waste fluid tank as same as the waste fluid. − Measure pH degree by using a pH test sheet and neutralise the waste fluid by gradually adding neutralising

agent. − After neutralisation ask a waste fluid treatment contractors to handle it.

5. Neutralisation Treatment in the Water Piping

− Put water into the cleaning tank. − Operate the acid-resistant pump after Air-purging. − Measure the pH degree and gradually add neutralising agent until the pH reaches pH = 7. − Operate the pump for a specified period of time for neutralisation. − Discharge the used water. − Operate the circulating pump and clean the circuit with water until no fouling fluid is observed.

6. Re-starting

− Reconnect the water piping as they were so that the water Chiller can operate. − After cleaning, perform water treatment (preventive treatment) in order to prevent the water circuit from

corrosion.

N° Name1 Saturation Line of R407C2 Area Requiring Cleaning

Suc

tion

Gas

Pre

ssur

e

Chilled Water Outlet Temperature (ºC)

Maintenance

Technical Catalogue

11

TCGB0054 rev.0 - 08/2010 91

11.5. Winter ShutdownWhen shutting down the unit for winter, clean the inside and outside of the cabinet, and dry the unit. Pump down the refrigerant to the condenser and close the liquid outlet stop valves. This unit should be covered during shutdown, in order to protect it from dust and environmental conditions. Be sure to tighten the packing glands and the cap nuts of the valves.

Remove the drain plug and drain all residual water from the water cooler piping systems, as such water may freeze during the cold season. It is very helpful to supply brine (anti-freezer) to the piping systems.

11.6. Spring Start-UpAfter any extended shutdown period, prepare the unit for operation as follows.

1. Thoroughly inspect and clean the unit.

2. Clean the water piping lines and the strainer.

Inspect the pump and other auxiliary equipment in the piping line.

3. Tighten all wiring connections and access panel.

CAUTION:When the main switch for this unit has been at the OFF position for an extended period of time, it should be switched ON at least 12 hours before start-up, so that oil in the compressor discharge casing may be warmed enough, to prevent oil foaming by the oil heater during start-up.

11.7. Part ReplacementReplacement of parts should be undertaken by ordering from the HITACHI Spare Parts List.

CAUTION:Do not replace with spare parts which are not the equivalent.

11.8. Refrigeration Cycle

¡ Strainer

Check for clogging each time when the refrigeration cycle is opened.

¡ Refrigerant Charge

Inspect the refrigerant charge of the system by checking the discharge and suction pressures. Perform a leakage test, if any leakage is suspected, and always perform such a test after a refrigeration cycle component is replaced. When refrigerant charge is required, follow the following instructions given for two cases:

1. When Refrigerant Gas Completely Leaked. Before charging the entire cycle must be completely evacuated and dehydrated. A gauge manifold or equivalent piping preparation shown in the next page is recommended as a convenient procedure regarding both charging and evacuation.

- Fully open all the stop valves.

- Connect the evacuation line to the check joints of the high and the low pressure sides.

- Completely evacuate the entire cycle with a vacuum pump.

- Charge refrigerant to the refrigeration cycle by weighing the charging cylinder. The proper refrigerant charge is listed on the nameplate.

- When charging by weight is stopped due to high ambient temperature, close the valve and operate the unit after circulating the chilled water through the water cooler and installing a jumper on the low pressure switch, if required.

2. When Only Additional Refrigerant is Required. Connect a gauge manifold to check joint of low pressure side, and connect a charge cylinder to gauge manifold. Operate the unit after circulating the chilled water and install a jumper on the low pressure switch, if required. Repeat the following procedure until pressure becomes proper (refer to page 58).

- Charge the gas refrigerant a little slowly into refrigeration cycle from check joint for low pressure.

- Check the pressure after refrigeration cycle becomes stable.

Maintenance

Technical Catalogue

TCGB0054 rev.0 - 08/201092

11.9. Refrigerant Cycle Diagram of Hitachi Air-Cooled Water Chiller (RCUE210, 280, 320, 400AG2B)

Option

Option

Option

GaugeManifold

Flange ConnectionFlare ConnectionSolder ConnectionRefrigerant Cycle

Charging Evacuation

Unit side

Chilled water inlet

Chilled water outlet

Electrical box

Option

No. Name No. Name1 Compressor 16 Compressor Dual Safety Valve (Option)

2 Air-Cooled Condenser 17 Stop Valve

3 Water Cooler 18 Thermistor (Suction, THMsn)

4 Filter Drier 19 Thermistor (Discharge, THMdn)

5 Electronic Expansion Valve 20 Thermistor (Evaporation, THMr2n)

6 Check Valve 21 Thermistor (Cooler water inlet, THMwi)

7 Stop Valve 22 Thermistor (Cooler water outlet, THMwon)

8 High Pressure Switch 23 Thermistor (Cooler water outlet, THMwon1)

9 Pressure Sensor (Low) 24 Thermistor (Ambient, THMa)

10 Pressure Sensor (High) 25 Thermistor (Liquid, THMI)

11 Pressure Relief Valve A High Pressure Gauge

12 Sight Glass B Low Pressure Gauge

13 Compressor Safety Valve (Option) C Stop Valve

14 Stop Valve (Option) D Charging Cylinder

15 Stop Valve (Option) E Vacuum Pump

NOTE:R407C shall be charged by LIQUID.

Maintenance

Technical Catalogue

11

TCGB0054 rev.0 - 08/2010 93

11.10. Refrigerant Cycle Diagram of Hitachi Air-Cooled Water Chiller (RCUE180, 240, 350, 450AG2B) with ECONOMIZER.

Option

Option Option

GaugeManifold

Flange ConnectionFlare ConnectionSolder ConnectionRefrigerant Cycle

Charging Evacuation

Unit side

Chilled water inlet

Chilled water outlet

Electrical Box

Option

No. Name No. Name1 Compressor 19 Thermistor (Discharge, THMdn)

2 Air-Cooled Condenser 20 Thermistor (Evaporation, THMr2n)

3 Water Cooler 21 Thermistor (Cooler water inlet, THMwi)

4 Filter Drier 22 Thermistor (Cooler water outlet, THMwon)

5 Electronic Expansion Valve 23 Thermistor (Cooler water outlet, THMwon1)

6 Check Valve 24 Thermistor (Ambient, THMa)

7 Stop Valve 25 Thermistor (Liquid, THMI)

8 High Pressure Switch 26 Pressure Switch

9 Pressure Sensor (Low) 27 Solenoid Valve

10 Pressure Sensor (High) 28 Capillary Tube

11 Pressure Relief Valve 29 Economiser

12 Sight Glass 30 Strainer

13 Compressor Safety Valve (Option) 31 Silencer

14 Stop Valve (Option) A High Pressure Gauge

15 Stop Valve (Option) B Low Pressure Gauge

16 Compressor Dual Safety Valve (Option) C Stop Valve

17 Stop Valve D Charging Cylinder

18 Thermistor (Suction, THMsn) E Vacuum Pump

NOTE:R407C shall be charged by LIQUID.

Maintenance

Technical Catalogue

TCGB0054 rev.0 - 08/201094

CAUTION:Do not charge OXYGEN, ACETYLENE or other flammable and poisonous gases into the refrigeration cycle when performing a leakage test or an airtight test. These types of gases are extremely dangerous, because explosion can occur. It is recommended that compressed air or nitrogen is charged for these types of tests.Mineral deposits on water cooler plates act as thermal insulators, and also act as resistance against water flow, causing a decrease of the water flow running through them, and resulting in a decreasing of the cooling capacity. Deposits on the plates should be inspected at regular intervals. Experience with the water Chiller will dictate accurate inspection intervals. These deposits should be removed by circulating diluted acid through the water passes after the water has been drained. As water in different localities contains different minerals, different acids are required, depending upon the thickness of the deposits.This unit is equipped with an operation hour meter. In the case that the total operation time reaches 24,000 hours or 3 years pass after installation, exchange the bearings of the compressor. For details, refer to the Service Handbook for HITACHI Screw Compressors.For R407C refrigerant system, charge the refrigerant with liquid condition to avoid its composition change.

11.11. Compressor Removal

¡ When Removing the Compressor

Remove the compressor while completing the following procedures.

1. Collect all refrigerant into a condenser before this work.

2. Turn off the switch DSW3 of the PCB in the magnetic switch box in order not to operate the compressor except for the cycle.

3. Circulate the chilled water sufficiently through the water cooler, and operate the water Chiller for 10 minutes, and check to ensure that the oil level is maintained at a stable condition.

4. Stop the water Chiller and completely close the liquid stop valve.

5. Operate the water Chiller after circulating water through the water cooler.

6. Stop the water Chiller when the low pressure reaches at approximately 0.05 MPa. Do not operate at a pressure lower than 0.05 MPa. If operated, it will cause a damage to the compressor.

7. Wait for several minutes. If the low pressure increase up to 0.45 to 0.5 MPa, repeat the above procedures 5 and 6 four or five times.

8. Turn OFF the power supply to the unit.

9. After these works above, almost all refrigerant can be collected in the condenser.

10. Recover the rest of refrigerant from the water cooler and the compressor.

11. Remove the bolts on the discharge and suction flanges of the compressor.

12. Remove all the wiring of the compressor.

13. Remove the bolts fixing the compressor.

14. Remove the compressor.

NOTE:For removing the compressor a special kit is available under request. Contact Hitachi distributor.

Maintenance

Technical Catalogue

11

TCGB0054 rev.0 - 08/2010 95

11.12. Safety and protection controlThe safety and protective devices are equipped with the unit to ensure dependable and long life operation.Their functions should be carefully noted, and field adjustment is not recommended, if the setting is maintained at the point listed in the table.

¡ Compressor protection1. Fuse and thermal relay equipped in the control box cut out each compressor operation when the current to the compressor exceeds the setting2. The internal thermostat embedded in the motor winding cuts out each operation, when the temperature exceeds the setting3. The oil heater in the compressor prevents from oil foaming during cold starting. This heater warms the oil, while the compressor is stopped

¡ Refrigeration Cycle1. The high pressure switch and low pressure control protect against excessive discharge pressure and exceedingly low suction pressure. The switch and control cut out compressor operation when discharge pressure or suction pressure is abnormal.2. The pressure relief valve is equipped on discharge gas line. When high pressure exceeds the setting, gas refrigerant will be discharged to prevent abnormal high pressure

¡ Condenser Fan Motor ProtectionFuse and internal thermostat are equipped The internal thermostat embedded in fan motor winding cut out fan operation and compressor operation, when the temperature of the motor winding exceeds the setting

¡ Water CoolerPump interlock, freeze protection thermostat, low pressure control and suction gas thermostat can protect water cooler against water cooler freezing

Model RCUE – AG2B 180 210 240 280 320 350 400 450For Compressor High Pressure Switch Manual Reset, Non-Adjustable ( One Switch for Each Compressor Motor )

Cut - Out MPa 2,8 2,8 2,8 2,8 2,8 2,8 2,8 2,8 Low Pressure Control Control Electronic Control

Cut - Out MPa 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05Internal Thermostat for Compressor Manual Reset, Non-Adjustable ( One Switch for Each Compressor Motor )

Cut - Out °C 115 115 115 115 115 115 115 115Cut - In °C 93 93 93 93 93 93 93 93

Compressor Motor(380-415V / 50Hz) ( 3 Fuses for Each Compressor )

Fuse A 355 400 500 315 315 355 400 500Manual Reset, Adjustable ( One Three-Phase Set for Each Compressor Motor )

Thermal Relay A 187 220 248 157 167 187 220 248Manual Reset, Adjustable ( One Three-Phase Set for Each Compressor Motor )

Oil Heater ( One Heater for Each Compressor Motor ) Capacity W 150 150 150 150 150 150 150 150Discharge Gas TemperatureControl ( One for Each Circuit )

Cut - Out °C 140 140 140 140 140 140 140 140CCP Timer Non-Adjustable ( One Timer for Each Compressor Motor ) Setting Timer S 180 180 180 180 180 180 180 180 Star - Delta S 5 5 5 5 5 5 5 5 Unloading During Starting S 30 30 30 30 30 30 30 30For Control Circuit Fuse A 6 6 6 6 6 6 6 6For Refrigerant Circuit Pressure Relief Valve ( One for Each Circuit )

Setting Pressure MPa 3 3 3 3 3 3 3 3Freeze Protection Control ( One for Each Water Cooler )

Cut - Out °C 2 2 2 2 2 2 2Fan Motor (380-415V / 50Hz) ( 3 Fuses for Each Circuit ) Fuse A 32 40 40 32 32 32 40 40

( One Fuse for Each Fan ( Both DC Fan and AC Fan ) ) Fuse A 12,5 12,5 12,5 12,5 12,5 12,5 12,5 12,5

Manual Reset, Adjustable ( One Protector for Each Fan ( Both DC Fan and AC Fan ) )

Maintenance

Technical Catalogue

TCGB0054 rev.0 - 08/201096

11.13. Normal Operating Pressure

Check to ensure that Chiller is operating within the working range as shown below, after at least 15 minutes operation.

Standard Working Range

Chilled Water Outlet Temperature (ºC)

Condenser Air Inlet Temperature (ºC)

Suc

tion

Gas

Pre

ssur

e D

isch

arge

Gas

Pre

ssur

e

Standard Working Range

Conditions:-Compressor: 100% Load-Condenser Fans: 12 or 16 fans

running each cycle

CAUTION:Periodical MaintenancePerform periodical maintenance according to the “INSTRUCTIONS” to maintain the unit in a good condition.FireIf a fire accidentally occurs, turn OFF the main switch and use an extinguisher for an oil fire and electric fire.Flammable GasesDo not operate the unit near the flammable gases such as lacquer, paint, oil, etc. to avoid a fire or an explosion.Service Panels and Electrical Box CoverTurn OFF the main switch when service panels or electrical box covers are removed for setting the temperature. Do not operate the unit without fixing panels.Heated PipeDo not touch the parts at discharge gas side by hand, since the pipes at the discharge side are heated by refrigerant and temperature becomes higher than 100ºC.UseDo not utilise this unit for cooling of drinking water or food. Comply with local codes and regulations.FailureTurn OFF all the main switches if refrigerant leakage or chilled water leakage occurs. Also, if the unit can not be stopped by the control switch, turn OFF all the switches for power source.Activation of Safety DeviceIn the case that one of safety devices is activated and unit is stopped, remove the cause of the stoppage and restart the unit. The protection devices are utilised to protect the unit from an abnormal operation. Therefore, if one of safety devices is activated, remove the cause by referring the “Troubleshooting” in the “INSTRUCTION” or call the local agency.FuseUtilise a fuse with specified capacity. Do not use a steel wire or a copper wire instead of a fuse. If an incorrect wire is utilised, a serious accident such as a fire will occur.Safety DevicesDo not make a short-circuit at the protection line. If a short-circuit is made, a serious accident will occur.Setting of Safety devicesDo not change the setting of safety devices, if changed, a serious accident will occur. Do not touch any electrical parts except for the operation switches during the operation. Do not press the button on the magnetic switch. If pressed, a serious accident will occur.

NOTE:For removing the compressor a special kit is available under request. Contact Hitachi distributor.

Maintenance

Technical Catalogue

11

TCGB0054 rev.0 - 08/2010 97

11.14. Test Running And Maintenance Record

MODEL: RCUE MFG. NO.

COMPRESSOR MFG. NO.

CUSTOMER NAME AND ADDRESS DATE

Is there adequate water flow for the water cooler?

Has all water piping been checked for leakage?

Has the unit been operated for at least twenty minutes?

Check Ambient Temperature:

ºC

Check Chillerd Water Temperature:

Inlet ºC Outlet ºC

Check Water Flow:

m3/h

Check Suction Line Temperature and Superheat:

Suction Line Temperature ºC ºC ºC ºC

Superheat deg deg deg deg

Check Pressure:

Discharge Pressure MPa MPa MPa MPa

Suction Pressure MPa MPa MPa MPa

Check Running Current:

A A A A

Check Voltage for System:

R-S, S-T, T-R= V V V

Has the unit been checked for refrigerant leakage?

Is the unit clean inside and outside?

Are all cabinet panels free from rattling?

Maintenance

Technical Catalogue

TCGB0054 rev.0 - 08/201098

11.15. Daily Operating Records

Model:

Date:

Weather:

Time of Operation : Start, Stop. (Operation hour: )

Sampling Time

Compressor Number

Term

Ambient Temperature DB ºC

WB ºC

Compressor High Pressure MPa

Low Pressure MPa

Voltage V

Current A

Chiller Water Temperature Inlet ºC

Outlet ºC

Current for Chilled Water Pump A

NOTES:

Maintenance

Technical Catalogue

11

TCGB0054 rev.0 - 08/2010 99

11.16. Servicing for R407C Refrigerant System

¡ Refrigerant

This R407C refrigerant is HFC type so that it has a feature of no ozone depletion. If it is mixed with another refrigerant, the serious changing would occur on its character. Therefore notice the following point when handling this refrigerant.

1. Charge the refrigerant in LIQUID condition and NOT in GAS. As “R407C” is geotropic mixed refrigerant, if gas charging is performed, only the easy vaporising refrigerant would be charged into the system and the difficult vaporising one would be remained in the charge cylinder.

The cylinder, gauge equipped manifold and charge hose are only used for R407C refrigerant.

Adjust the cylinder setting to charge in liquid.

¡ Refrigerant Oil

UX300, which R407C refrigerant is easy to blend into it, is used for this system. The other oil is prohibited to use, so that not to be mixed with another kind of oil at the maintenance and service work. This oil is very hygroscopic.

Therefore minimum humidity handling is necessary.

¡ Servicing Equipment

When servicing R407C system, servicing equipment such as Charging Cylinder, Charging Hose, Vacuum Pump and so on, shall not be mixed with R22 equipment to avoid R407C composition change.

Troubleshooting

Technical Catalogue

12

12. Tr o u b l e s h o o t i n g

TCGB0054 rev.0 - 08/2010 101

12. Troubleshooting .......................................................................................................10112.1.Procedures for trouble .......................................................................................................................... 102

Contents

Troubleshooting

Technical Catalogue

TCGB0054 rev.0 - 08/2010102

12.1.Procedures for trouble

¡ The following table shows efficient checking procedures for trouble.

Fault Possible Cause Check/Corrective Action

Condenser Fan Does Not Operate

Current to Unit is Shut Off 1. Reset the power supply line to the unit.

Fuse for Operation Circuit is Blown Out or Faulty Contact

1. Check for shorted components.2. Check for loose connection. Tighten or

replace. If necessary.Contactor Holding Coil is Burned Out or Faulty Contact 1. Find the causes, and repair or replace.

Tripped Overcurrent Relay 1. Remove the causes, and reset the overcurrent relay.

Low Voltage 1. Check the voltage of unit rating.

Shorted Motor or Terminals. 1. Check the motor and terminals. Repair or replace, if necessary.

Compressor Does Not Operate

Condenser Fan is Not Operating 1. Remove all causes of inoperative fan.

Interlock Circuit for Chilled Water Pump is Open1. Check the pump contactor. Repair or replace, if

necessary.2. Check for the faulty pump.

Electrical Protective Devices Are Tripped. 1. Remove the causes, and reset the “ON” button. See the following causes.

Incorrect Wiring Connection for Compressor Power Source

1. Interchange two of three terminals R, S and T at the main power source terminals.

Compressor Stops on High Pressure Switch

Excessively High Discharge Pressure 1. See “High Discharge Pressure”

Malfunction of High Pressure Switch 1. Readjust the setting or replace, if defective.

Compressor Stops on Overcurrent Relay

Excessively High Discharge Pressure and Suction Pressure

1. See “High Discharge Pressure” and “High Suction Pressure”.

High or Low Voltage, Single-Phase or Phase Imbalance

1. Check the power supply line and contactors. Repair, if necessary.

Loose connection 1. Tighten the loose electrical connection or repair, if necessary.

Faulty Compressor Motor 1. Check the compressor motor. Repair or replace, if necessary.

Faulty Overcurrent Relay 1. Replace it, if necessary.

Troubleshooting

Technical Catalogue

12

TCGB0054 rev.0 - 08/2010 103

¡ The following table shows efficient checking procedures for trouble.

Fault Possible Cause Check/Corrective Action

Compressor Stops on Freeze Protection Control.

Excessively Low Chilled water Outlet Temperature 1. Check for excessively low setting of the chilled water setting knob.

Defective Thermistor 1. Check for malfunction of the thermistor. Replace, if necessary.

Shortage of Chilled Water Flow 1. Check the rotation of the pump.

Air in water Circuit 1. Purge air.

Compressor Stops on Internal Thermostat or Discharge Gas Temperature Control.

High or Low Voltage, Single-Phase or Phase Imbalance

1. Check the power supply line and contactor. Repair, if necessary.

Excessive Superheat 1. Check for refrigerant leakage.

Defective Element 1. Check the contact of the internal thermostat during the cold condition.

Excessive High Discharge Pressure and Low Suction Pressure

1. See “High Discharge Pressure” and “Low Suction Pressure”.

Insufficient Cooling

High Discharge Pressure or Low Suction Pressure 1. See “High Discharge Pressure” and “Low Suction Pressure”.

Improper Thermostat Setting 1. Readjust the setting.

Defective Unload Mechanism 1. Adjust unload mechanism. Repair or replace unloaded parts, if necessary.

Noisy CompressorSlugging Due to Liquid Flooding Back to Compressor

1. Check the superheat of suction gas. Check the position of Expansion Valve coil. Repair or replace if necessary.

Worn parts 1. Check for the sound of internal parts. Replace the compressor, if necessary.

Miscellaneous Noise Loose Fixed Screw 1. Tighten the screws of all parts.

Unloaded Does not Function

Trouble with the Thermistor 1. Adjust the setting temperature.2. Replace the thermistor.

Trouble with the Solenoid Valve 1. Check the coil in the solenoid valve.2. Check oil passage for clogging.

Worn Unloader Mechanism 1. Check the unloaded system parts in the compressor.

High Discharge Pressure

High Condenser Air Temperature or Insufficient Air Flow Through the Condenser

1. Check the fan operation.2. Check for coil clogging; clean, if necessary.

Defective Check Valve or partially Closed Liquid Line Valve

1. Check the valves and strainer. Replace, if necessary.

Overcharged Refrigerant 1. Adjust the refrigerant quantity.Air or Non-Condensable Gas in the Refrigerant Cycle. 1. Purge the gas from the refrigerant cycle.

Suction Pressure is Higher than Standard 1. See “High Suction Pressure”.

Low Discharge Pressure

Extremely Cold Condenser Air 1. Check the ambient Temperature.

Insufficient Refrigerant Charge 1. Add Refrigerant.

Leakage from the Compressor Discharge Valve 1. Replace the valves. Replace the compressor, if required.

Suction Pressure is Lower than Standard 1. See “ Low Suction Pressure”

High Suction PressureHigh Inlet Temperature of Chilled Water 1. Check the insulation of the piping.

2. Check the installation specifications.

Excessive Opening of Expansion Valve 1. Check the position of Expansion Valve coil, or replace, if defective.

Low Suction Pressure

Low Inlet Temperature of Chilled Water 1. Check the installation specifications.

Improperly controlled Expansion Valve or Faulty Valve

1. Check the position of Expansion Valve coil. Repair or replace, if necessary.

Insufficient Refrigerant Charge 1. Add Refrigerant.

Excessive Oil in the Water Cooler 1. Purge Oil.

Scales on Water Cooler Plates 1. Clean the plates.

General SpecificationsTechnical Catalogue

13

13. G e n e r a l S p e c i f i c a t i o n s

TCGB0054 rev.0 - 08/2010 105

13. General Specifications.............................................................................................10513.1. General Data ....................................................................................................................................... 106

13.2. Options ................................................................................................................................................ 108

Contents


Technical Catalogue

TCGB0054 rev.0 - 08/2010106

13.1. General Data

Model RCUE180AG2B RCUE210AG2B RCUE240AG2B RCUE280AG2B

Electrical Power Supply - 3N~ 400V 50Hz

Cooling Capacity kW 439 528 583 742

Total Power Input kW 151 182 201 252

EER - 2.91 2.90 2.90 2.94

ESEER 3.70 3.69 3.69 3.74

Outer Dimension

Height mm 2,430 2,430 2,430 2,430

Width mm 1,950 1,950 1,950 1,950

Depth mm 5,420 6,620 6,620 10,560

Cabinet Colour - Natural Grey (Munsell code 1.0Y8.5/0.5)

Net Weight kg 3,850 4,400 4,550 7,200

Compressor Type - Semi-Hermetic Screw Type

Models - 130ASCA-Z 170ASCA-Z 170ASCA-Z 130ASCA-Z

Quantity - 1 1 1 2

Oil Heater W 150 150x2

Capacity Control- Continuous Capacity Control

% 15 ~ 100

Water Cooler Type - Brazing Plate Type

Condenser Type - Multi-Pass Cross Finned Tube

Fan Motor (pole) kW 0.38 (8)

Quantity - 12 16 16 24

Refrigerant Type - R407C

Flow Control - Electronic Expansion Valve

Number of Independent Circuits - 1 1 1 2

Oil Type - UX300

Water pipe Connection - 4” Victaulic (1xInlet / 1xOutlet) 4” Victaulic (2xInlet / 2xOutlet)

Control System - Micro-Processor Control

Control Display - LCD

Chilled Water Outlet Temperature °C (-10) 5 ~ 15

Condenser Air Inlet Temperature °C -15 ~ 46

Permissible Water Pressure Max. MPa 1.0

Safety and Protection Devices -

Reverse Phase Protection, Fuse and Thermal Relay for Compressor, Internal Thermostat for Compressor, Compressor Oil Heater, Fuse and Internal Thermostat for Fan Motor, Control Circuit Fuse, High Pressure Switch, Low Pressure Control, High Pressure Relief Valve, Discharge Gas Temperature Control, Suction Gas Temperature Control, Freeze Protection Control and Compressor Operation Hour Meter.

NOTE:The nominal cooling capacities are based on the European Standard EN14511.- Chilled Water Inlet/Outlet Temperature : 12/7 °C- Condenser Inlet Air Temperature: 35 °C

General SpecificationsTechnical Catalogue

13

TCGB0054 rev.0 - 08/2010 107

Model RCUE320AG2B RCUE350AG2B RCUE400AG2B RCUE450AG2B

Electrical Power Supply - 3N~ 400V 50Hz

Cooling Capacity kW 801 878 1056 1166

Total Power Input kW 265 302 364 402

EER - 3.02 2.91 2.90 2.90

ESEER 3.84 3.70 3.69 3.69

Outer Dimension

Height mm 2,430 2,430 2,430 2,430

Width mm 1,950 1,950 1,950 1,950

Depth mm 10,560 10,560 12,960 12,960

Cabinet Colour - Natural Grey (Munsell code 1.0Y8.5/0.5)

Net Weight kg 7,450 7,600 8,600 8,950

Compressor Type - Semi-Hermetic Screw Type

Models - 130ASCA-Z 130ASCA-Z 170ASCA-Z 170ASCA-Z

Quantity - 2 2 2 2

Oil Heater W 150×2

Capacity ControlStep Continuous Capacity Control

% 15 ~ 100

Water Cooler Type - Brazing Plate Type

Condenser Type - Multi-Pass Cross Finned Tube

Fan Motor (pole) kW 0.38 (8)

Quantity - 24 24 32 32

Refrigerant Type - R407C

Flow Control - Electronic Expansion Valve

Number of Independent Circuits - 2 2 2 2

Oil Type - UX300

Water pipe Connection - 4” Victaulic (2×Inlet / 2×Outlet)

Control System - Micro-Processor Control

Control Display - LCD

Chilled Water Outlet Temperature °C (-610) 66755 ~ 15

Condenser Air Inlet Temperature °C -15 ~ 46

Permissible Water Pressure Max. MPa 1.0

Safety and Protection Devices -

Reverse Phase Protection, Fuse and Thermal Relay for Compressor, Internal Thermostat for Compressor, Compressor Oil Heater, Fuse and Internal Thermostat for Fan Motor, Control Circuit Fuse, High Pressure Switch, Low Pressure Control, High Pressure Relief Valve, Discharge Gas Temperature Control, Suction Gas Temperature Control, Freeze Protection Control and Compressor Operation Hour Meter

NOTE:The nominal cooling capacities are based on the European Standard EN14511.- Chilled Water Inlet / Outlet Temperature : 12/7 °C- Condenser Inlet Air Temperature: 35 °C


Technical Catalogue

TCGB0054 rev.0 - 08/2010108

13.2. OptionsFollowing table shows options:

( mark shows available)Specifications Standard Option Remarks

GeneralLow Noise Option

Super Low Noise Option

Low Ambient Fan Control (-15ºC)

Low WaterTemperature

Outlet Temperature: 0~4ºC(Low1)

Outlet Temperature: -1~-5ºC(Low2)

Outlet Temperature: -6~-10ºC(Low3)

Compressor Compressor Enclosure

ControlSystem

Circuit Breaker Protection n.a. For Each Compressor and FanFan Circuit Breaker Protection n.a. For each FanCurrent Limiter

Main Isolator Switch

Local/Remote Changeover Switch

Individual Alarm By Alarm CodeOperation Hour Meter

Pressure Sensor (High and Low)

Pump Freeze Protection Operation Pump ON/OFF OperationPump Operation Circuit Pump ON/OFF ContactNon Voltage Contact for Remote indication Pump, Operation, AlarmDC24V External Control Level or pulseShort Period Power OFF Protection

Power Failure Recover Control

2 Different Temperature Setting For Heat Storage ApplicationRemote Control Operation (Field Supplied) AC 220-240VBMS Control (HARC-70CE1 /OP; HC-A32MB) LON-WORKS, MODBUSRemote Controller (CSC-5S; CSNET WEB)

Power Meter Option Kit for CSNET WEB

Numbered Cables

Output ON/OFF Signal for Free Cooling

Condenser

Guard Net (Unit both sides)

Rear Guard Net

Coated Fin

Copper Fin

RefrigerationCycle

Independent Circuit

Discharge Valve

Suction Valve

Compressor Safety Valve

Compressor Dual Safety Valve

Dual Safety valve

Pressure Display (High and Low) Standard:Display on LCD Panel

Suction Pipe Insulation

Heat Recovery n.a.

Water Cooler

PED Certificate (97/23/EC) PED: PressureEquipment Directive

10 bar Water Pressure

PN 16 Flange With Companion FlangeDifferential Water Pressure Switch

Water Flow Switch (Field Install)

Water Cooler Heater

Common Water Pipe

Water Pressure Port Inlet / OutletWater Strainer

Others

Witness Test

Foundation Rubber Mats

Anti-vibration Springs

Wooden Crate

All painted unit

Lower Guard Net

Drawings

Technical Catalogue

14

14. D r a w i n g s

TCGB0054 rev.0 - 08/2010 109

14. Drawings..................................................................................................................10914.1. Dimensional drawings ..........................................................................................................................110

14.1.1. RCUE 180~450AG2B ..................................................................................................................................110

14.2. Wiring Diagram .....................................................................................................................................111

14.2.1. Model RCUE 180AG2B~450AG2B (POWER CIRCUIT) .............................................................................11114.2.2. Model RCUE 280AG2B~RCUE 450AG2B (Power Circuit) ..........................................................................11214.2.3. Model: RCUE180AG2B - RCUE210AG2B - RCUE240AG2B (Control Circuit) ...........................................11314.2.4. Model: RCUE280AG2B - RCUE320AG2B - RCUE350AG2B

- RCUE400AG2B - RCUE450AG2B (Control Circuit) .........................................................................11414.2.5. Model RCUE180~450AG2B (Fan Box) ........................................................................................................11514.2.6. Main Printed Circuit Board (Master) .............................................................................................................11614.2.7. Relays Printed Circuit Board ........................................................................................................................11714.2.8. Costumer Wiring of Control Circuit ...............................................................................................................11814.2.9. Parts list .......................................................................................................................................................119

Contents

Drawings

Technical Catalogue

TCGB0054 rev.0 - 08/2010110

14.1. Dimensional drawing

14.1.1. RCUE 180~450AG2BM

odel

ab

cd

ef

180A

G2B

2580

5100

1550

821

0,24

0AG

2B31

8063

0021

5028

0,32

0,35

0AG

2B25

8051

4010

240

1550

1550

1640

0,45

0AG

2B31

8063

4012

640

2150

2150

Air

inle

tA

ir in

let

Air

inle

tA

ir in

let

Air

inle

t

Air

inle

t

Air

inle

tA

ir in

let

Air

inle

t

(Mou

ntin

g ho

les)

Air

outle

t

(Mou

ntin

g ho

les)

(Ø 1

14.3

Wel

ding

con

nect

ion)

(4B

Vic

taul

ic c

onne

ctio

n)

Drawings

Technical Catalogue

14

TCGB0054 rev.0 - 08/2010 111

14.2. Wiring Diagram14.2.1. Model RCUE 180AG2B~450AG2B (POWER CIRCUIT)

2 cy

cles

mod

els

only

With

Com

pres

sor H

arne

ss

(2 cycles models only)

(2 c

ycle

s m

odel

s on

ly)

210/

240/

400/

450H

P O

nly

Drawings

Technical Catalogue

TCGB0054 rev.0 - 08/2010112

14.2.2. Model RCUE 280AG2B~RCUE 450AG2B (Power Circuit)

400H

P/ 4

50H

P O

nly

With

Com

pres

sor

H

arne

ss

Drawings

Technical Catalogue

14

TCGB0054 rev.0 - 08/2010 113

14.2.3. Model: RCUE180AG2B - RCUE210AG2B - RCUE240AG2B (Control Circuit)

Drawings

Technical Catalogue

TCGB0054 rev.0 - 08/2010114

14.2.4. Model: RCUE280AG2B - RCUE320AG2B - RCUE350AG2B - RCUE400AG2B - RCUE450AG2B (Control Circuit)

Drawings

Technical Catalogue

14

TCGB0054 rev.0 - 08/2010 115

FAN

MO

TOR

FAN

MO

TOR

FBO

X

Fan

Har

ness

Pow

er

Fan

Har

ness

Ctrl

.

FAN

MO

TOR

FBO

X

Fan

Har

ness

Pow

er

Fan

Har

ness

Ctrl

. DC

Fan

Cab

leC

ontro

l

14.2.5. Model RCUE180~450AG2B (Fan Box)

Drawings

Technical Catalogue

TCGB0054 rev.0 - 08/2010116

S D

etai

l(2

80~4

50H

P U

nits

onl

y)

for 2

cyc

les

(for 1

Cyc

le U

nits

onl

y)

All

units

For 2

cyc

les

unit

(28

0~45

0HP

)

Wat

er P

ress

ure

Sw

itch

Opt

ion

For 2

cy

cles

uni

ts

14.2.6. Main Printed Circuit Board (Master)

Drawings

Technical Catalogue

14

TCGB0054 rev.0 - 08/2010 117

B d

etai

l

180,280,320,350HP Units only

A D

etai

l: on

ly 2

40, 4

50H

P U

nits

C

oil c

onne

ctio

n fo

r CM

C (d

)

Not

e: D

oubl

e co

il ac

tivat

ion

Onl

y fo

r 1 c

ycle

Uni

ts

240,280,400,450HP

Units only

(for 1,2 cycles)

(for 2 cycles)

Onl

y fo

r PC

Bd1

14.2.7. Relays Printed Circuit Board

Drawings

Technical Catalogue

TCGB0054 rev.0 - 08/2010118

14.2.8. Costumer Wiring of Control Circuit

NO

TES

:

1. A

ll th

e se

tting

sha

ll be

per

form

ed b

efor

e P

ower

ON

.

2. R

emot

e/Lo

cal C

hang

e ov

er S

witc

h O

n O

pera

tion

Sw

itch

shal

l be

set t

o”R

emot

e”.

3.Te

rmin

als

1

~/n

57

ar

e fo

r 1~2

30V

50H

z

Te

rmin

als

A

~D

a

re fo

r DC

24V.

Te

rmin

als

E

~F

a

re H

-LIN

K (L

ow s

igna

l).

2 C

ycle

s

Neu

tral

R P

hase

In c

ase

of re

mot

e co

ntro

l ope

ratio

n th

is w

ire s

hall

be re

mov

ed

R P

hase

Rem

ote

Con

trol S

witc

h (R

SW

-A) (

Opt

ion)

Pum

p O

pera

tion

Pum

pIn

terlo

ck

ALA

RM

LA

MP

A

LAR

M

SIG

NA

LD

C24

VR

UN

/STO

P S

IGN

AL

Nig

ht S

hift

M

ode

(OP

TIO

N)

2nd.

Set

ting

Tem

pera

ture

(OP

TIO

N)

E

xter

nal

Ther

m. O

per.

(O

PTI

ON

)

Fan

Ope

rat

Forc

ed M

ode

(OP

TIO

N)

In c

ase

of in

divi

dual

Indi

catio

n w

ithou

t Rem

ote

Con

trol S

witc

hC

ostu

mer

Wiri

ng

ON

LY U

SE

D F

OR

- DIF

F. W

ATE

R P

SW

- FLO

W S

WIT

CH

(O

PTI

ON

S)

ON

LY U

SE

D F

OR

SO

ME

OP

TIO

NS

:- D

IFF.

WAT

ER

PR

ES

SU

RE

SW

ITC

H- F

LOW

SW

ITC

H

Forc

e C

ompr

esso

rLo

ad O

pera

tion

Cau

tion

Lam

pFa

n O

pera

t.

Fre

e C

oolin

g O

utpu

t Sig

nal

(Onl

y cy

cle

nº1)

SE

TTIN

G O

F LO

W V

OLT

AG

E C

ON

TRO

L

Forc

e C

ompr

esso

r Loa

d

LOW

VO

LTA

GE

RE

MO

TE C

ON

TRO

L

Drawings

Technical Catalogue

14

TCGB0054 rev.0 - 08/2010 119

14.2.9. Parts list(n=1~N)

Mark Name Remark Mark Name Remark

TB ASSY Terminal board Assy FSW Water Flow Switch OptionMI Main Interrruptor (Switch) n= 1~2 CNn1~n2c Connectors on Connector Support n= 1~2

NFn1,n2,n01~16 Noise Filters (PCB or ring cores) n= 1~2 ARR,H,FnAuxiliar Relay (Remote Control, Econ, Fan Op.) n= 1~2

ORCn Over Current Relay for Compressor n= 1~2 Pdn /Psn Discharge / suction pressure sensor n= 1~2CMCn Compressor Main Contactor n= 1~2 WP Water Switch (DPSW or FSW Option) OptionCMCDn Delta Connection Compessor Contactor n= 1~2 DPSW Differential Water Pressure Switch OptionCMCsn Star Connection Compressor Contactor n= 1~2 PSHn High Pressure Switch n= 1~2CMFn1,n2 Fan Motor Contactor n= 1~2 PSWn Pressure Switch for Economizer n= 1~2SVn1~n6 Slide Valve for Compressor Load Control n= 1~2 SVEn Solenoid Valve for Economizer n= 1~2SPn1~n6 Solderless Splice n= 1~2 CLn Caution Lamp for Fan Operation n= 1~2THMWON Water Temp. in evaporator backside n= 1~2 LY, LG, LW Lamp (Yellow, Green, White)THMdn Discharge Thermistor n= 1~2 RL,OL1,2 Alarm and Operation Lamps OptionTHMSn Suction Thermistor n= 1~2 CTn Current transformer (Current Sensor) n= 1~2THMIn Liquid Themistor n= 1~2 EHn Electric Heater on Cooler n= 1~2PCBc,dn Printed Circuit Board (main, cycle) n= 1~2 LCD Liquid Cristal DisplayPCBen1~n8 Fan Module PCB (DC Fan motors) n= 1~2 SCn Power Source 24V DCPCBa Configuration Setting PCB DPB Door Push Button

CCBn Connector on Copper Bar n= 1~6 PB1,2 Push Button for Local ON/OFF White/Black

PFCn1~n3 Protection Fuse Compressors n= 1~2 SR1,2 Button for Remote ON/OFF OptionPFFn1~n3 Protection Fuse for Fan n= 1~2 ITCn Compressor Internal Thermostat n= 1~2EF1~3,R,S,T Electric Fuse 6A ITFn5,n8 Fan Internal Thermostat n= 1~2FF (a)n1,n8 Fan Fuses (AC or DC Fans) n= 1~2 MVn1~n3 Electronic Expansion Valve n= 1~2MCn Motor Compressor n= 1~2 N1~N3 Blue Neutral TerminalsMF(dc/ac)n1~n8 Fan Motor (DC/AC) n= 1~2 TBOXcn Terminal Board on Compressor BOX n= 1~2MFF n Motor Fan inside E.BOX n= 1~2 TBOX Terminal Boxes for Fan ConnectionsCHn Crankcase Heater on Compressor n= 1~2 CEn1~n7 Connector n= 1~2BAR TBn Neutral Bar TB n= 1~2 SW1~7 Switches

CAn1~n8 AC Capacitors (for AC Fans) n= 1~2 CMP Operation signal from pump contactor (feedback)

TF1~7 Transformer Option TRP Thermal Relay Protection for pump

n:1~n

Model N

RCUE180, 210, 240AG2B 1

RCUE280, 320, 350,400, 450AG2B 2

Model Selection

Technical Catalogue

15

15. M o d e l S e l e c t i o n

TCGB0054 rev.0 - 08/2010 121

15. Model Selection .......................................................................................................12115.1. Selection Example ............................................................................................................................... 122

15.2. Performance Table .............................................................................................................................. 123

15.3. Electrical Data .................................................................................................................................... 127

15.4. Sound Data.......................................................................................................................................... 128

Contents

Model Selection

Technical Catalogue

TCGB0054 rev.0 - 08/2010122

15.1. Selection Example

1. Determine the system requirements

Condenser Air Inlet Temperature: 30 °CChilled Water Outlet Temperature: 7 °CChilled Water Inlet Temperature: 12 °CCooling Load: 450 kW

2. Select Model and Read the Performance

From the cooling capacity table, model RCUE180AG2B can be selected with the following performance.

Cooling Capacity: 466,9 kWChilled Water Flow Rate: 80,3 m³/hWater Cooler Pressure Drop: 54,5 kPaCompressor Input Power: 130,6 kW

3. Correct the Data

− Flow Rate When the water Inlet/Outlet temperature difference is not 5°C, correct the flow rate by the following formula:

Corrected Flow Rate =

5(°C) × Tabulated Flow Rate (CFR)Given Temp. Difference(°C)

The corrected Flow Rate must be confirmed to be within the working range.

− Cooling Capacity and Compressor Input. When the fouling factor is taken into consideration, the cooling capacity and the compressor input will be different from the value indicated in the cooling capacity table.

Corrected Capacity = Kfc × CAP

Corrected Input = Kfi × IPT

CAP: Tabulated Cooling CapacityIPT: Tabulated Compressor InputKfc: Capacity Correction FactorKfi: Compressor Input Correction Factor

Fouling Factor m2h°C/kcal(m2°C/kW)

Kfc Kfi

0 1.00 1.00

0.00005 (0.044) 1.00 1.00

0.0001(0.088) 0.99 1.01

4. Water Pressure Drop

− Water pressure drop is given by the following formula

PD = α x Qβ

PD: Pressure Drop (kPa)Q: Water Flow (m³/h)α,β β Parameters (table below)

Model: RCUE-AG2B α β

180 0.0133 1.8961210 0.0101 1.8982240 0.0080 1.9006280 0.0057 1.8938320 0.0044 1.8948350 0.0036 1.8961400 0.0027 1.8982450 0.0021 1.9006

Model Selection

Technical Catalogue

15

TCGB0054 rev.0 - 08/2010 123

15.2. Performance Table

ABT COTRCUE180AG2B RCUE210AG2B RCUE240AG2B RCUE280AG2B

CCAP CFR CPD IPT CCAP CFR CPD IPT CCAP CFR CPD IPT CCAP CFR CPD IPT25,0 5,0 452,3 77,8 51,3 116,7 544,0 93,6 55,8 139,5 600,7 103,3 53,7 155,3 764,5 131,5 58,5 192,0

6,0 467,4 80,4 54,6 118,1 562,2 96,7 59,3 141,2 620,7 106,8 57,2 157,1 790,0 135,9 62,2 194,3 7,0 482,5 83,0 58,0 119,4 580,3 99,8 63,0 142,8 640,8 110,2 60,7 158,9 815,5 140,3 66,1 196,5 8,0 497,6 85,6 61,5 120,8 598,5 102,9 66,8 144,5 660,8 113,7 64,4 160,8 841,0 144,7 70,1 198,8 9,0 512,7 88,2 65,1 122,2 616,6 106,1 70,7 146,1 680,9 117,1 68,2 162,6 866,5 149,0 74,2 201,1

10,0 527,8 90,8 68,8 123,6 634,8 109,2 74,7 147,8 700,9 120,6 72,0 164,4 892,1 153,4 78,3 203,3 11,0 542,9 93,4 72,5 124,9 652,9 112,3 78,8 149,4 720,9 124,0 76,0 166,2 917,6 157,8 82,6 205,6 12,0 558,0 96,0 76,4 126,3 671,1 115,4 83,1 151,1 741,0 127,5 80,1 168,1 943,1 162,2 87,0 207,9 13,0 573,1 98,6 80,4 127,7 689,2 118,5 87,4 152,7 761,0 130,9 84,2 169,9 968,6 166,6 91,6 210,1 14,0 588,2 101,2 84,4 129,1 707,4 121,7 91,8 154,3 781,1 134,3 88,5 171,7 994,1 171,0 96,2 212,4 15,0 603,2 103,8 88,6 130,5 725,5 124,8 96,3 156,0 801,1 137,8 92,9 173,6 1019,6 175,4 100,9 214,6

30,0 5,0 437,0 75,2 48,1 127,7 525,6 90,4 52,2 152,7 580,4 99,8 50,3 169,9 738,6 127,0 54,8 210,1 6,0 452,0 77,7 51,2 129,1 543,6 93,5 55,7 154,4 600,2 103,2 53,7 171,8 763,9 131,4 58,4 212,5 7,0 466,9 80,3 54,5 130,6 561,6 96,6 59,2 156,1 620,1 106,7 57,1 173,7 789,2 135,7 62,1 214,8 8,0 481,9 82,9 57,9 132,0 579,6 99,7 62,9 157,8 640,0 110,1 60,6 175,6 814,5 140,1 65,9 217,2 9,0 496,9 85,5 61,3 133,4 597,6 102,8 66,6 159,5 659,8 113,5 64,2 177,5 839,8 144,4 69,9 219,5

10,0 511,8 88,0 64,9 134,8 615,6 105,9 70,5 161,2 679,7 116,9 68,0 179,4 865,1 148,8 73,9 221,8 11,0 526,8 90,6 68,5 136,3 633,6 109,0 74,5 162,9 699,6 120,3 71,8 181,3 890,4 153,1 78,1 224,2 12,0 541,8 93,2 72,2 137,7 651,6 112,1 78,5 164,6 719,5 123,7 75,7 183,2 915,7 157,5 82,3 226,5 13,0 556,7 95,8 76,1 139,1 669,6 115,2 82,7 166,3 739,3 127,2 79,7 185,1 941,0 161,8 86,7 228,9 14,0 571,7 98,3 80,0 140,5 687,6 118,3 87,0 168,0 759,2 130,6 83,9 187,0 966,3 166,2 91,1 231,2 15,0 586,6 100,9 84,0 141,9 705,6 121,4 91,4 169,7 779,1 134,0 88,1 188,9 991,5 170,5 95,7 233,5

35,0 5,0 410,1 70,5 42,6 138,1 493,3 84,8 46,3 165,1 544,6 93,7 44,6 183,7 693,2 119,2 48,6 227,2 6,0 424,6 73,0 45,5 139,5 510,6 87,8 49,4 166,8 563,8 97,0 47,6 185,7 717,6 123,4 51,9 229,6 7,0 439,0 75,5 48,5 141,0 528,0 90,8 52,7 168,6 583,0 100,3 50,8 187,6 742,0 127,6 55,3 232,0 8,0 453,4 78,0 51,6 142,5 545,4 93,8 56,0 170,4 602,2 103,6 54,0 189,5 766,4 131,8 58,8 234,4 9,0 467,9 80,5 54,7 143,9 562,7 96,8 59,5 172,1 621,4 106,9 57,3 191,5 790,8 136,0 62,4 236,8

10,0 482,3 83,0 58,0 145,4 580,1 99,8 63,0 173,9 640,6 110,2 60,7 193,4 815,2 140,2 66,1 239,2 11,0 496,8 85,4 61,3 146,9 597,5 102,8 66,6 175,6 659,7 113,5 64,2 195,4 839,7 144,4 69,9 241,6 12,0 511,2 87,9 64,7 148,3 614,9 105,8 70,4 177,4 678,9 116,8 67,8 197,3 864,1 148,6 73,8 244,1 13,0 525,7 90,4 68,2 149,8 632,2 108,7 74,2 179,1 698,1 120,1 71,5 199,3 888,5 152,8 77,7 246,5 14,0 540,1 92,9 71,8 151,3 649,6 111,7 78,1 180,9 717,3 123,4 75,3 201,2 912,9 157,0 81,8 248,9 15,0 554,6 95,4 75,5 152,7 667,0 114,7 82,1 182,6 736,5 126,7 79,1 203,2 937,3 161,2 86,0 251,3

40,0 5,0 383,2 65,9 37,5 151,5 460,9 79,3 40,7 181,2 508,9 87,5 39,2 201,6 647,7 111,4 42,7 249,3 6,0 397,1 68,3 40,1 153,1 477,7 82,2 43,6 183,0 527,4 90,7 42,0 203,7 671,2 115,5 45,7 251,9 7,0 411,1 70,7 42,8 154,6 494,4 85,0 46,5 184,9 545,9 93,9 44,8 205,7 694,8 119,5 48,8 254,4 8,0 425,0 73,1 45,6 156,2 511,2 87,9 49,5 186,7 564,4 97,1 47,7 207,8 718,3 123,6 52,0 256,9 9,0 438,9 75,5 48,5 157,7 527,9 90,8 52,7 188,6 582,9 100,3 50,7 209,8 741,9 127,6 55,3 259,5

10,0 452,8 77,9 51,4 159,2 544,7 93,7 55,9 190,4 601,4 103,4 53,8 211,9 765,4 131,7 58,6 262,0 11,0 466,8 80,3 54,5 160,8 561,4 96,6 59,2 192,3 619,9 106,6 57,0 213,9 788,9 135,7 62,1 264,6 12,0 480,7 82,7 57,6 162,3 578,2 99,4 62,6 194,1 638,4 109,8 60,3 216,0 812,5 139,7 65,6 267,1 13,0 494,6 85,1 60,8 163,9 594,9 102,3 66,1 196,0 656,9 113,0 63,7 218,0 836,0 143,8 69,3 269,6 14,0 508,6 87,5 64,1 165,4 611,7 105,2 69,7 197,8 675,4 116,2 67,1 220,1 859,6 147,8 73,0 272,2 15,0 522,5 89,9 67,5 167,0 628,4 108,1 73,3 199,6 693,9 119,3 70,7 222,1 883,1 151,9 76,9 274,7

43,0 5,0 367,1 63,1 34,5 159,6 441,5 75,9 37,5 190,9 487,5 83,8 36,1 212,4 620,4 106,7 39,4 262,6 6,0 380,7 65,5 37,0 161,2 457,9 78,8 40,2 192,8 505,6 87,0 38,7 214,5 643,4 110,7 42,2 265,2 7,0 394,3 67,8 39,6 162,8 474,2 81,6 43,0 194,7 523,6 90,1 41,4 216,6 666,5 114,6 45,1 267,9 8,0 407,9 70,2 42,2 164,4 490,6 84,4 45,8 196,6 541,7 93,2 44,2 218,7 689,5 118,6 48,1 270,5 9,0 421,5 72,5 44,9 166,0 507,0 87,2 48,8 198,5 559,8 96,3 47,0 220,8 712,5 122,5 51,2 273,1

10,0 435,2 74,8 47,7 167,6 523,4 90,0 51,8 200,4 577,9 99,4 49,9 222,9 735,5 126,5 54,4 275,7 11,0 448,8 77,2 50,6 169,1 539,8 92,8 54,9 202,3 596,0 102,5 52,9 225,1 758,5 130,5 57,6 278,3 12,0 462,4 79,5 53,5 170,7 556,1 95,7 58,1 204,2 614,1 105,6 56,0 227,2 781,5 134,4 61,0 280,9 13,0 476,0 81,9 56,5 172,3 572,5 98,5 61,4 206,1 632,1 108,7 59,2 229,3 804,6 138,4 64,4 283,5 14,0 489,6 84,2 59,6 173,9 588,9 101,3 64,8 208,0 650,2 111,8 62,5 231,4 827,6 142,3 68,0 286,2 15,0 503,2 86,6 62,8 175,5 605,3 104,1 68,3 209,9 668,3 115,0 65,8 233,5 850,6 146,3 71,6 288,8

Where,ABT: Condenser Air Inlet Temperature (°C)COT: Chilled Water Outlet Temperature (°C)CCAP: Cooling Capacity (kW)

CFR: Chilled Water Flow Rate at 5°C (m3/h)CPD: Water Cooler Pressure Drop (kPa)IPT: Compressor Input Power (kW)

Conversion Multiplier:1 kW = 860 kcal/h

= 3412 Btu/h 1 kPa = 0.102 mAq

Model Selection

Technical Catalogue

TCGB0054 rev.0 - 08/2010124

Performance Table (cont.)



6,0 369,7 63,6 35,0 166,6 444,7 76,5 38,0 199,2 491,0 84,5 36,6 221,7 624,9 107,5 39,9 274,2 7,0 383,1 65,9 37,5 168,2 460,8 79,3 40,7 201,2 508,8 87,5 39,2 223,8 647,6 111,4 42,7 276,8 8,0 396,5 68,2 40,0 169,9 476,9 82,0 43,4 203,1 526,6 90,6 41,8 226,0 670,2 115,3 45,6 279,5 9,0 410,0 70,5 42,6 171,5 493,1 84,8 46,3 205,0 544,4 93,6 44,6 228,2 692,9 119,2 48,6 282,2

10,0 423,4 72,8 45,3 173,1 509,2 87,6 49,2 207,0 562,2 96,7 47,4 230,3 715,6 123,1 51,6 284,8 46,0 5,0 350,9 60,4 31,7 167,7 422,1 72,6 34,4 200,5 466,0 80,2 33,2 223,1 593,1 102,0 36,2 275,9

6,0 364,2 62,6 34,0 169,3 438,1 75,3 37,0 202,5 483,7 83,2 35,6 225,3 615,6 105,9 38,8 278,6 7,0 377,5 64,9 36,4 171,0 454,1 78,1 39,6 204,4 501,4 86,2 38,1 227,5 638,1 109,8 41,5 281,3 8,0 390,9 67,2 38,9 172,6 470,1 80,9 42,3 206,4 519,1 89,3 40,7 229,6 660,6 113,6 44,4 284,0 9,0 404,2 69,5 41,4 174,2 486,1 83,6 45,0 208,3 536,7 92,3 43,4 231,8 683,1 117,5 47,3 286,7

10,0 417,5 71,8 44,1 175,9 502,1 86,4 47,9 210,3 554,4 95,4 46,1 234,0 705,6 121,4 50,2 289,4




= 3412 Btu/h 1 kPa = 0.102 mAq

Model Selection

Technical Catalogue

15

TCGB0054 rev.0 - 08/2010 125




6,0 852,8 146,7 56,5 205,2 934,8 160,8 54,6 236,1 1124,3 193,4 59,3 282,4 1241,4 213,5 57,3 314,2 7,0 880,4 151,4 60,0 207,5 965,0 166,0 58,0 238,9 1160,6 199,6 63,0 285,7 1281,5 220,4 60,8 317,8 8,0 907,9 156,2 63,6 209,9 995,2 171,2 61,5 241,6 1196,9 205,9 66,8 288,9 1321,6 227,3 64,5 321,5 9,0 935,4 160,9 67,4 212,3 1025,4 176,4 65,0 244,4 1233,2 212,1 70,7 292,2 1361,7 234,2 68,3 325,2 10,0 963,0 165,6 71,2 214,7 1055,6 181,6 68,7 247,1 1269,6 218,4 74,7 295,5 1401,8 241,1 72,1 328,8 11,0 990,5 170,4 75,1 217,1 1085,7 186,7 72,5 249,9 1305,9 224,6 78,8 298,8 1441,9 248,0 76,1 332,5 12,0 1018,1 175,1 79,1 219,5 1115,9 191,9 76,4 252,6 1342,2 230,9 83,0 302,1 1482,0 254,9 80,2 336,1 13,0 1045,6 179,8 83,2 221,9 1146,1 197,1 80,3 255,4 1378,5 237,1 87,3 305,4 1522,1 261,8 84,3 339,8 14,0 1073,1 184,6 87,4 224,3 1176,3 202,3 84,4 258,2 1414,8 243,3 91,7 308,7 1562,2 268,7 88,6 343,5 15,0 1100,7 189,3 91,7 226,7 1206,5 207,5 88,5 260,9 1451,1 249,6 96,2 312,0 1602,3 275,6 93,0 347,1

30,0 5,0 797,4 137,1 49,8 221,9 874,0 150,3 48,1 255,4 1051,2 180,8 52,2 305,4 1160,7 199,6 50,4 339,9 6,0 824,7 141,8 53,0 224,4 903,9 155,5 51,2 258,3 1087,2 187,0 55,6 308,8 1200,5 206,5 53,7 343,6 7,0 852,0 146,5 56,4 226,9 933,9 160,6 54,5 261,1 1123,2 193,2 59,2 312,2 1240,2 213,3 57,1 347,4 8,0 879,3 151,2 59,9 229,3 963,8 165,8 57,8 264,0 1159,2 199,4 62,8 315,6 1279,9 220,1 60,7 351,2 9,0 906,6 155,9 63,5 231,8 993,7 170,9 61,3 266,8 1195,2 205,6 66,6 319,0 1319,7 227,0 64,3 355,0 10,0 933,9 160,6 67,1 234,3 1023,6 176,1 64,8 269,7 1231,2 211,8 70,4 322,4 1359,4 233,8 68,0 358,8 11,0 961,2 165,3 70,9 236,7 1053,6 181,2 68,5 272,5 1267,2 218,0 74,4 325,8 1399,2 240,7 71,9 362,6 12,0 988,5 170,0 74,8 239,2 1083,5 186,4 72,2 275,3 1303,2 224,1 78,5 329,2 1438,9 247,5 75,8 366,3 13,0 1015,8 174,7 78,7 241,7 1113,4 191,5 76,0 278,2 1339,2 230,3 82,6 332,6 1478,7 254,3 79,8 370,1 14,0 1043,1 179,4 82,8 244,2 1143,4 196,7 80,0 281,0 1375,2 236,5 86,9 336,0 1518,4 261,2 84,0 373,9 15,0 1070,4 184,1 86,9 246,6 1173,3 201,8 84,0 283,9 1411,1 242,7 91,3 339,4 1558,1 268,0 88,2 377,7

35,0 5,0 748,3 128,7 44,1 239,9 820,2 141,1 42,6 276,1 986,5 169,7 46,3 330,2 1089,3 187,4 44,7 367,4 6,0 774,6 133,2 47,1 242,5 849,1 146,0 45,5 279,1 1021,3 175,7 49,4 333,7 1127,6 194,0 47,7 371,3 7,0 801,0 137,8 50,2 245,0 878,0 151,0 48,5 282,0 1056,0 181,6 52,6 337,2 1166,0 200,6 50,8 375,2 8,0 827,4 142,3 53,4 247,5 906,9 156,0 51,5 284,9 1090,7 187,6 56,0 340,7 1204,4 207,2 54,1 379,1 9,0 853,7 146,8 56,6 250,1 935,8 161,0 54,7 287,9 1125,5 193,6 59,4 344,2 1242,7 213,8 57,4 383,0 10,0 880,1 151,4 60,0 252,6 964,7 165,9 57,9 290,8 1160,2 199,6 62,9 347,7 1281,1 220,3 60,8 386,9 11,0 906,4 155,9 63,4 255,2 993,6 170,9 61,3 293,7 1195,0 205,5 66,6 351,2 1319,5 226,9 64,3 390,8 12,0 932,8 160,4 67,0 257,7 1022,5 175,9 64,7 296,6 1229,7 211,5 70,3 354,7 1357,8 233,5 67,9 394,7 13,0 959,1 165,0 70,6 260,3 1051,3 180,8 68,2 299,6 1264,5 217,5 74,1 358,2 1396,2 240,1 71,6 398,6 14,0 985,5 169,5 74,3 262,8 1080,2 185,8 71,8 302,5 1299,2 223,5 78,0 361,7 1434,6 246,7 75,4 402,5 15,0 1011,9 174,0 78,2 265,4 1109,1 190,8 75,5 305,4 1334,0 229,4 82,0 365,2 1472,9 253,3 79,2 406,4

40,0 5,0 699,2 120,3 38,8 263,3 766,4 131,8 37,5 303,1 921,8 158,5 40,7 362,4 1017,8 175,1 39,3 403,2 6,0 724,6 124,6 41,5 266,0 794,3 136,6 40,1 306,2 955,3 164,3 43,5 366,1 1054,8 181,4 42,0 407,3 7,0 750,0 129,0 44,3 268,7 822,1 141,4 42,8 309,2 988,8 170,1 46,5 369,8 1091,8 187,8 44,9 411,4 8,0 775,4 133,4 47,2 271,3 850,0 146,2 45,6 312,3 1022,3 175,8 49,5 373,5 1128,8 194,2 47,8 415,5 9,0 800,9 137,7 50,2 274,0 877,8 151,0 48,4 315,4 1055,8 181,6 52,6 377,2 1165,8 200,5 50,8 419,7 10,0 826,3 142,1 53,2 276,7 905,7 155,8 51,4 318,5 1089,3 187,4 55,8 380,8 1202,8 206,9 53,9 423,8 11,0 851,7 146,5 56,4 279,4 933,6 160,6 54,4 321,6 1122,8 193,1 59,1 384,5 1239,8 213,2 57,1 427,9 12,0 877,1 150,9 59,6 282,1 961,4 165,4 57,6 324,7 1156,3 198,9 62,5 388,2 1276,8 219,6 60,4 432,0 13,0 902,5 155,2 62,9 284,7 989,3 170,2 60,8 327,7 1189,8 204,6 66,0 391,9 1313,8 226,0 63,8 436,1 14,0 927,9 159,6 66,3 287,4 1017,1 174,9 64,1 330,8 1223,3 210,4 69,6 395,6 1350,8 232,3 67,2 440,2 15,0 953,3 164,0 69,8 290,1 1045,0 179,7 67,4 333,9 1256,8 216,2 73,3 399,3 1387,7 238,7 70,8 444,3

43,0 5,0 669,8 115,2 35,8 277,3 734,1 126,3 34,5 319,2 883,0 151,9 37,5 381,7 975,0 167,7 36,2 424,7 6,0 694,6 119,5 38,3 280,1 761,4 131,0 37,0 322,4 915,7 157,5 40,2 385,5 1011,1 173,9 38,8 429,0 7,0 719,4 123,7 41,0 282,9 788,6 135,6 39,5 325,6 948,5 163,1 42,9 389,3 1047,3 180,1 41,4 433,2 8,0 744,3 128,0 43,7 285,6 815,8 140,3 42,2 328,8 981,2 168,8 45,8 393,1 1083,5 186,4 44,2 437,4 9,0 769,1 132,3 46,5 288,4 843,1 145,0 44,9 331,9 1014,0 174,4 48,7 396,9 1119,6 192,6 47,1 441,6 10,0 794,0 136,6 49,4 291,1 870,3 149,7 47,7 335,1 1046,8 180,0 51,8 400,7 1155,8 198,8 50,0 445,9 11,0 818,8 140,8 52,3 293,9 897,5 154,4 50,5 338,3 1079,5 185,7 54,9 404,5 1192,0 205,0 53,0 450,1 12,0 843,7 145,1 55,4 296,7 924,8 159,1 53,5 341,5 1112,3 191,3 58,1 408,3 1228,1 211,2 56,1 454,3 13,0 868,5 149,4 58,5 299,4 952,0 163,7 56,5 344,6 1145,0 196,9 61,4 412,1 1264,3 217,5 59,3 458,6 14,0 893,4 153,7 61,7 302,2 979,3 168,4 59,6 347,8 1177,8 202,6 64,8 415,9 1300,5 223,7 62,5 462,8 15,0 918,2 157,9 65,0 304,9 1006,5 173,1 62,8 351,0 1210,5 208,2 68,2 419,7 1336,6 229,9 65,9 467,0




= 3412 Btu/h 1 kPa = 0.102 mAq

Model Selection

Technical Catalogue

TCGB0054 rev.0 - 08/2010126




6,0 674,6 116,0 36,3 289,5 739,4 127,2 35,0 333,2 889,4 153,0 38,0 398,5 982,0 168,9 36,7 443,4 7,0 699,1 120,2 38,8 292,3 766,3 131,8 37,4 336,5 921,6 158,5 40,7 402,3 1017,6 175,0 39,2 447,7 8,0 723,5 124,4 41,4 295,1 793,1 136,4 40,0 339,7 953,9 164,1 43,4 406,2 1053,2 181,2 41,9 452,0 9,0 748,0 128,7 44,1 298,0 819,9 141,0 42,6 343,0 986,1 169,6 46,2 410,1 1088,8 187,3 44,6 456,3 10,0 772,5 132,9 46,9 300,8 846,7 145,6 45,2 346,2 1018,4 175,2 49,1 414,0 1124,5 193,4 47,4 460,6

46,0 5,0 640,3 110,1 32,8 291,4 701,9 120,7 31,7 335,4 844,2 145,2 34,4 401,0 932,1 160,3 33,2 446,2 6,0 664,6 114,3 35,2 294,2 728,5 125,3 34,0 338,7 876,2 150,7 36,9 405,0 967,4 166,4 35,6 450,6 7,0 688,9 118,5 37,7 297,1 755,1 129,9 36,4 341,9 908,2 156,2 39,5 408,9 1002,8 172,5 38,2 454,9 8,0 713,1 122,7 40,3 299,9 781,7 134,5 38,9 345,2 940,2 161,7 42,2 412,8 1038,1 178,6 40,8 459,3 9,0 737,4 126,8 42,9 302,8 808,3 139,0 41,4 348,5 972,2 167,2 45,0 416,7 1073,5 184,6 43,4 463,6 10,0 761,7 131,0 45,6 305,6 834,9 143,6 44,1 351,7 1004,2 172,7 47,8 420,6 1108,8 190,7 46,2 468,0




= 3412 Btu/h 1 kPa = 0.102 mAq

Model Selection

Technical Catalogue

15

TCGB0054 rev.0 - 08/2010 127

15.3. Electrical Data

ModelUnit Main Power

ApplicableInstantaneous

Voltage (V)

Commpressor Motor

CondenserFan Motor

MaximumUnit

Current

STC*2

UnitMaximumSTC*1 RNC IPT RNC IPT

Ph (V) (Hz) Maximum Minimum (A) (A) (kW) (A) (kW) (A) (A)

RCUE180AG2B 3+N 400 50 440 360 416 234 141 13.8 10,0 322 429RCUE210AG2B 3+N 400 50 440 360 540 280 169 16.8 13,4 385 556RCUE240AG2B 3+N 400 50 440 360 540 311 188 16.8 13,4 426 556RCUE280AG2B 3+N 400 50 440 360 416 385 232 27.6 20,0 534 502RCUE320AG2B 3+N 400 50 440 360 416 406 245 27.6 20,0 562 502RCUE350AG2B 3+N 400 50 440 360 416 468 282 27.6 20,0 643 502RCUE400AG2B 3+N 400 50 440 360 540 559 337 33.6 26,8 770 651RCUE450AG2B 3+N 400 50 440 360 540 622 375 33.6 26,8 853 651

RNC: Running Current(A)STC: Starting Current(A)IPT: Electric Power Input(kW)Hz: Frequency(Hz)Ph: Nº of phases

NOTE:1. This data is based on the following conditions...Chilled Water Inlet/Outlet Temperature: 12/7°C, Ambient Temperature: 35°C.2. The “Maximum Unit Current” shown in the above table is the maximum total unit running current at the following conditions.

Supply Voltage: 90% of the rated voltage, Unit Capacity: 100% at max. operating conditions3. The power supply cables must be sized to cover this maximum current value.4. Starting Current (*1,*2) means as follows.

*1:First Compressor Starting Current*2:Unit Maximum Starting Current, when Last Compressor starts.

5. Compressor motor is star-delta starting.

Model Selection

Technical Catalogue

TCGB0054 rev.0 - 08/2010128

15.4. Sound Data

ModelSound Power Level (dB)

Frequency Band (Hz)Overall

63 125 250 500 1000 2000 4000 8000RCUE180AG2B 97 95 90 88 86 79 69 65 90RCUE210AG2B 99 97 92 90 88 81 71 67 92RCUE240AG2B 99 97 92 90 88 81 71 67 92RCUE280AG2B 100 98 93 91 89 82 72 68 93RCUE320AG2B 100 98 93 91 89 82 72 68 93RCUE350AG2B 100 98 93 91 89 82 72 68 93RCUE400AG2B 102 100 95 93 91 84 74 70 95RCUE450AG2B 102 100 95 93 91 84 74 70 95

NOTES:1. The sound pressure is based on the following conditions:

− 1 meter from the control panel surface, and 1.5 meter from the floor level − Voltage of the power source is 380 V − The above data are measured in an anechoic chamber, so that reflected sound should be taken into consideration in the

field.2. Operating conditions are as follows:

− Water Inlet/Outlet Temperature 12/7ºC, Ambient Temperature 35ºC, all fans running.

Application Data

Technical Catalogue

16

16. A p p l i c a t i o n D a t a

TCGB0054 rev.0 - 08/2010 129

16. Application Data.......................................................................................................12916.1. Working Range .................................................................................................................................... 130

16.2. Part Load Performance ....................................................................................................................... 131

16.2.1. Model: RCUE180AG2B~ RCUE450AG2B .................................................................................................. 131

16.3. Ethylene Glycol Application ................................................................................................................. 132

Contents

Application Data

Technical Catalogue

TCGB0054 rev.0 - 08/2010130

16.1. Working Range

¡ Air-cooled Water Chiller units RCUE-AG2B

Item Description Remark

Power Supply

Working Voltage 90%~110% of Rated Voltage

Voltage Imbalance Within ±3% Deviation from Each Voltage at Compressor Terminals

Starting Voltage Higher than 85% of Rated VoltageAmbient Temperature -15 ~ 46ºC

Water Outlet Temperature

Standard 5 ~ 15ºC Water

Low Water Temperature Option

4 ~ 0ºC (Low 1) -1 ~ -5ºC (Low2)-6 ~ -10ºC (Low3)

Ethylene glycol

Maximum Permissible Water Pressure 1.0 MPaHumidity ≤50% (40ºC) (1)

Altitude ≤1000 m (1)

(1) Minimum working range requeriments according to EN60204-1. In case of different working range conditions, ask conformity to HITACHI Distributor.)

¡ Water Flow Range

MODEL RCUE AG2B 180 210 240 280 320 350 400 450

Water Flow Rangem3/h 47.2 56.8 62.7 79.8 86.1 94.4 114 125

m3/h 126 151 167 213 230 252 303 334

Application Data

Technical Catalogue

16

TCGB0054 rev.0 - 08/2010 131

16.2. Part Load Performance

16.2.1. Model: RCUE180AG2B~RCUE450AG2B

AmbientTemperature

(°C)Performance

Compressor Load15~99%

FULL LOAD

43

Capacity 18 20 25 30 40 50 60 70 75 80 89

Input 24 26 31 36 45 54 65 79 87 96 117

COP 74 76 80 84 89 92 92 89 87 83 76

40

Capacity 19 20 25 30 40 50 60 70 75 80 90 94

Input 24 25 30 34 42 51 60 71 77 84 102 110

COP 79 80 85 89 95 99 100 98 97 95 88 85

35

Capacity 20 25 30 40 50 60 70 75 80 90 100

Input 23 27 31 38 45 53 61 66 72 84 100

COP 87 92 97 105 111 114 114 113 112 107 100

30

Capacity 21 25 30 40 50 60 70 75 80 90 100 106

Input 23 26 29 35 42 48 55 59 63 73 86 95

COP 91 97 103 113 120 125 127 127 126 123 117 112

25

Capacity 22 25 30 40 50 60 70 75 80 90 100 110

Input 22 24 26 32 37 42 48 52 56 65 78 95

COP 100 105 114 127 137 143 145 144 143 138 129 116

20

Capacity 22 25 30 40 50 60 70 75 80 90 100 110

Input 21 22 25 29 34 38 44 46 50 57 65 77

COP 107 113 122 137 148 156 161 162 162 159 153 143

:Standard Condition (Ambient: 35°C, Water Inlet/Outlet: 12/7°C, Full Load)

NOTE:1. Capacity: Cooling Capacity (kW) Input: Total Input Power (Compressor + Fans) (kW) COP: Capacity/Input (kW/kW)2. Operating Conditions: Chilled Water Outlet Temperature: 7°C Water Flow Rate: Constant Condenser Fan: All Fans Running3. Above Table shows the percentage of Capacity, Input and COP based on the standard condition. Therefore, each value can be calculated as below example:

Example: Model RCU1E180AG2B

Standard Condition Ambient: 30°C, Capacity 70%Capacity: 439 kW Capacity: 439 × 0.70 = 307 kWInput: 151 kW Input: 151 × 0.55 = 83 kWCOP: 2.91 COP: 2.91 × 1.27= 3.70 kW

Application Data

Technical Catalogue

TCGB0054 rev.0 - 08/2010132

16.3. Ethylene Glycol Application

¡ Low Ambient Application

Under the condition where the ambient temperature is low in winter, there is a case where the unit and piping will become damaged by freezing during the shutdown periods.

To prevent freezing, it is effective to operate the pump. This Chiller has the pump ON/OFF operation control to avoid freezing. This control become available by connecting Pump Operation circuit. (See Wiring Diagram).

Additionally, in a case where measures such as water raining are difficult, utilise antifreeze mixture of ethylene glycol.

Below table shows the ethylene glycol percentage suggested for the different temperature values.

The table also shows the correction factors, since unit with antifreeze mixture have a slight different performance compared with no glycol.

Example:

− Cooling Capacity with ethylene glycol = Kc × Cooling Capacity without ethylene glycol

− Input Power, Flow Rate and Pressure Drop is calculated in the same way as Cooling Capacity

(Water Outlet Temperature: 5 ~ 15°C)

Minimum Ambient Temperature °C -3 -7 -13 -22

Required Ethylene Glycol Percentage wt% 10 20 30 40

Cooling Capacity Correction Factor Kc 0.99 0.98 0.97 0.96

Input Power Correction Factor Ki 1.00 0.99 0.99 0.98

Flow Rate Correction Factor Kf 1.00 1.01 1.04 1.08

Pressure Drop Correction Factor Kp 1.04 1.11 1.18 1.29

¡ Low Water Temperature Application (Option)

When utilising water less than 5 °C, antifreezing mixture of ethylene glycol shall be input to the water system.

Low water temperature Option is categorised 3 level depending on water outlet temperature.

Therefore, please specify the level when ordering .

Freeze Protection Thermostat has been set in the factory.

Table shows Required Ethylene Glycol percentage for each category.

1. Category

Category Outlet Water Temp. (°C)

Required Ethylene

Glycol (wt%)

Ethylene Glycol

Freezing Temp. (°C)

Low 1 4 ~ 0 20 -7

Low 2 -1 ~ -5 30 -13

Low 3 -6 ~ -10 40 -22

NOTE:Freeze Protection Thermostat is the electronic control, but non-adjustable.

Application Data

Technical Catalogue

16

TCGB0054 rev.0 - 08/2010 133

For the performance, Each value can be given by using following table.

Performance

EthyleneGlycol

(wt%)

OutletWaterTemp.

(°C)

Flow Rate Correction

Factor

(Kf)

Pressure Drop Correction

Factor

(Kp)

Ambient Temperature(°C)

25 30 35 40 43CAP IPT CAP IPT CAP IPT CAP IPT CAP IPT(%) (%) (%) (%) (%) (%) (%) (%) (%) (%)

20

4 1.011 1.15 98 82 93 90 87 97 81 106 78 112

3 1.012 1.16 94 81 89 89 83 96 77 106 75 111

2 1.013 1.17 92 81 86 88 80 96 75 105 72 111

1 1.013 1.18 88 80 82 87 77 95 72 104 69 110

0 1.014 1.19 86 79 80 87 75 94 70 103 66 109

30

-1 1.034 1.30 83 78 78 86 73 94 68 103 64 109

-2 1.035 1.32 80 78 75 86 71 93 65 102 62 108

-3 1.037 1.34 78 77 74 85 68 92 63 102 60 108

-4 1.037 1.36 75 77 71 85 66 92 61 101 58 107

-5 1.038 1.38 74 76 69 84 64 91 59 101 57 106

40

-6 1.073 1.50 71 76 66 84 61 91 57 100 55 106

-7 1.075 1.52 69 75 64 83 59 91 55 100 52 106

-8 1.076 1.54 66 75 61 83 58 90 53 100 50 105

-9 1.076 1.56 63 75 59 83 55 90 51 99 48 105

-10 1.077 1.58 61 74 57 82 53 90 49 99 46 105

NOTE:1. CAP: Cooling Capacity, IPT: Compressor Input2. Capacity and Compressor Input show the percentage of the standard condition Standard condition: Ambient 35°C, Water Inlet/Outlet 12/7°c3. Water Flow Rate and Pressure Drop can be calculated by the Correction Factor Kf and Kp.4. Example: a) Model: RCUE180AG2B b) Standard Condition: Capacity 439kW, Compressor Input 141kW c) Outlet/Inlet Water Temperature -3/2°C, Ambient Temperature 30°C - Ethylene glycol: 30% - Capacity = 439*0.74=325 kW, Compressor Input = 141*0.85=112 kW - Water Flow(m³/h) = Kf*Capacity(kW)*0.86 ∆T (∆T=Inlet Temp.-Outlet Temp.) = 1.037*325*0.86/(2-(-3)) = 58.0 m³/h - Pressure Drop = Kp*Pressure Drop(water) = 1.34*0.0133*58.0 1.849

= 29,3 kPa where, Pressure Drop(water)= α × Qβ : see “Chapter 15.1”

Components Data

Technical Catalogue

17

17. C o m p o n e n t s D a t a

TCGB0054 rev.0 - 08/2010 135

17. Components Data....................................................................................................13517.1. Compressor ......................................................................................................................................... 136

17.2. Condenser and Condenser Fan .......................................................................................................... 136

17.3. Water Cooler ....................................................................................................................................... 137

Contents

Components Data

Technical Catalogue

TCGB0054 rev.0 - 08/2010136

17.1. Compressor

Model 130ASC-Z 170ASC-ZType Semi-HermeticRevolution rpm 2880Displacement m3/h 470.7 591.1Capacity Control % 100~15Pneumatic Pressure

High Side MPa 3.0Low Side MPa 2.0

Motor Type Special Squirrel Cage Three-Phase Motor

Starting Method Star-Delta StartingNominal Output kW 128.0 160.7Poles 2Insulation E

Oil Name JAPAN ENERGY, FREOL UX300Charge Litre 13 15

Net Weight kg 1160 1200

17.2. Condenser and Condenser Fan

Model RCUE-AG2B 180 210 240 280 320 350 400 450

Air

Hea

t Exc

hang

er

Type Multi-Pass Cross Finned tube

Piping

Material Copper Tube

Outer Diameter mm 9.53 9.53 9.53 9.53 9.53 9.53 9.53 9.53

Rows 4/4 3/4 4/4 3/4 4/4 4/4 3/4 4/4

FinMaterial Aluminium

Pitch mm 2.2/2.2 2.1/2.2 2.2/2.2 2.1/2.2 2.2/2.2 2.2/2.2 2.1/2.2 2.2/2.2

Number of condenser 8 8 8 16 16 16 16 16

Maximum Operating Pressure

MPa 3.0

Fan

Fan

Type Direct-Driven Propeller Fan

Quantity 12 16 16 24 24 24 32 32

Outer diameter 644 644 644 644 644 644 644 644

Revolution 990 990 990 990 990 990 990 990

Air Flow m3/min 2660 3600 3600 5320 5320 5320 7200 7200

Motor

Type Drip-proof type enclosure

Starting Method Direct-On-Line Starting

Nominal Output kW 0.38 0.38 0.38 0.38 0.38 0.38 0.38 0.38

Quantity 12 16 16 24 24 24 32 32

Poles 8 8 8 8 8 8 8 8

Components Data

Technical Catalogue

17

TCGB0054 rev.0 - 08/2010 137

17.3. Water Cooler

Type A B C D E

Dimensions

Height (H) mm 875 875 875 875 875

Width (W) mm 386 386 386 386 386

Depth (D) mm 353 399 445 519 589

Maximum Permissible Pressure

Refrigerant Side

MPa 1.8 1.8 1.8 1.8 1.8

Water Side MPa 1.0 1.0 1.0 1.0 1.0

Internal Volume Refrigerant Side

Litre 42.6 48.6 54.6 64.2 73.2

Water Side Litre 43.2 49.2 55.2 64.8 73.8

Material Stainless Steel

Cooling Operation

Dimension

Water In

Refrigerant Out

Refrigerant In

Water Out

Model RCUE-AG2B 180 210 240 280 320 350 400 450

Water Cooler Brazed Type Plate Heat Exchanger

Type (Quantity) C (1) D (1) E (1) A (2) B (2) C (2) D (2) E (2)

TCGB0054 rev.0 - 08/2010 - Printed in Spain

Hitachi is participating in the EUROVENT Certification Programme.Products are as specified in the EUROVENT Directory of CertifiedProducts (up to 600 kW)

Hitachi Air Conditioning Products Europe, S.A. is certified with:ISO 9001 by AENOR; Spain for its Quality Management accordancewith the standardISO 14001 by AENOR, Spain for its Environmental Managementsystems accordance with the standard.

Hitachi units certifies that our product have fulfilled EU consumersafety, health and environmental requirements.

Hitachi Air Conditioning Products Europe, S.A.Ronda Shimizu,1 - Políg. Ind.CanTorrella08233Vacarisses (Barcelona) España

Documents

SAMURAI SERIES AIR COOLED WATER CHILLERS -SCREW TYPE …documentatie.hdkl.nl/Koudwatermachines/TECHNICAL... · SAMURAI SERIES AIR COOLED WATER CHILLERS-SCREW TYPE- ... Service Space