WXC R134a. Nominal Cooling Capacity from 224 to 692kW

Transcription

1 WXC R134a Nominal Cooling Capacity from 224 to 692kW FEATURES AND BENEFITS Range of 12 models. Higher capacity and higher EER from the same compressor. High EER, low sound power level and high reliability. Superior part load performance. Cleanable Condenser abd Cooler. Lower waterside pressure drop..

2 TABLE OF CONTENTS Page No. Identification Unit Features 3 Physical Specifications 4-5 Extended Performance Data 6-7 Dimensional Data 8-9 Typical Wiring 0-11 Unit Pressure Drops -13 IDENTIFICATION W X C 125 T - 5 S R Water Cooled Screw Compressor Chiller Nominal Tons 60, 85, 95, 115, 125, 160, 175 Two Compressors 95, 125, 145, 170, 195 Blank - One Compressor T - Two Compressors 5-50Hz S - Standard Q - Special R = R134a

3 UNIT FREATURES Vision2020i a flexible and advance programmable electronic controller designed specifically for the applications and precise control of Dunham-Bush Rotary Screw compressor chillers. The controller board is provided with a set of terminals that connected to various devices such as temperature sensors, pressure and current transducers, solenoid valves, compressors and fans contactors, control relays and etc. Three sizes of controller boards are provided to handle different number of input and output requirements: DB3-S small board, DB3-M medium board and DB3-L large board. The unit algorithm program and operating parameters are stored in FLASH-MEMORY that does not require a back-up battery. The program can be loaded through PC or programming key. Vision2020i controller is equipped with a user friendly terminal with a semi-graphic display and dedicated keys that provides easy access to the unit operating conditions, control set points and alarm history. Each unit s controller can be configured and connected to the local DBLAN network that allows multiple units sequencing control without additional hardware. The DBLAN is local area network made up of several chillers controller. Display and User Terminal Vision2020i controller is design to work with a user friendly back-lit 132 by 64 pixels DBG1 Semi-Graphic Display panel connected with controller through telephone cable. The user terminal allows displaying the unit working conditions, compressor run times, alarm history and modifying the parameters. The display also has an automatically self-test of the controller on system start-up. Multiple messages will be displayed by automatically scrolling from each message to the next. All of these messages are spelled out in English language on the display terminal. There are 15 dedicated buttons enable user to access information, base on the security level of the password. For more detail operation of the DBG1 Display Terminal, please refer to the Unit Operation Manual. Easily accessible measurements include: Leaving chilled water temperature Leaving chiller water temperature derivative Evaporator Pressure Condenser Pressure Compressor amp draw of each compressor Compressor elapsed run time of each compressor Compressor starts status Oil level sensor status Water temperature reset value Water flow switch status External start/stop command status Optional entering chilled water temperature, leaving and entering condenser water temperature are available. With this option the operator can quickly and accurately read all significant water temperatures and eliminate the need for often-inaccurate thermometers. Voltage readout is also offered as an optional feature. 3

4 PHYSICAL SPECIFICATION MODEL WXC 60-5SR 85-5SR 95-5SR 115-5SR 125-5SR 160-5SR NOMINAL CAPACITY (kw) MIN % UNIT CAPACITY REDUCTION 25% 25% 25% 25% 25% 25% EER COMPRESSOR MODEL (QTY) HSC1512 (1) HSC1709 (1) HSC1711 (1) HSC1811 (1) HSC1813 (1) HSC1816 (1) rev/min ELECTRICAL INFORMATION COMPR. RLA, EACH UNIT LRA, EACH MIN CIRCUIT AMPS MAX. ALLOW. FUSE SIZE EVAPORATOR MODEL B1R C1R D1R D2R J1R L1R WATER CONNECTION Victolic (INCH) NOMINAL WATER FLOW (l/s) NOMINAL PRESSURE DROP (kpa) CONDENSER MODEL A1R A2R A3R B1R H1R H4R WATER CONNECTION Victolic (INCH) NOMINAL WATER FLOW (l/s) NOMINAL PRESSURE DROP (kpa) GENERAL INFORMATION UNIT LENGTH (mm) UNIT WIDTH (mm) UNIT HEIGHT (mm) SHIPPING WEIGHT (kg) OPERATING WEIGHT (kg) APPROX. R134a REF. CHARGE (kg) Notes: 1.) Nominal capacity is based on standard condition, actual capacity depends on the specified operating conditions. 2.) Evaporator and condenser models are based on standard condition and are both 2 pass. Model might change for non-standard conditions or application. 4

5 PHYSICAL SPECIFICATION MODEL WXC 175-5SR 95T-5SR 125T-5SR 145T-5SR 170T-5SR 195T-5SR NOMINAL CAPACITY (kw) MIN % UNIT CAPACITY REDUCTION 25% 12.50% 12.50% 12.50% 12.50% 12.50% EER COMPRESSOR MODEL (QTY) HSC1817 (1) HSC1509 HSC1512 HSC 1512 HSC1709 HSC1711 (2) (2) HSC 1709 (2) (2) rev/min ELECTRICAL INFORMATION COMPR. RLA, EACH , UNIT LRA, EACH , MIN CIRCUIT AMPS MAX. ALLOW. FUSE SIZE EVAPORATOR MODEL L1R D3R J1R K1R L1R L2R WATER CONNECTION Victolic (INCH) NOMINAL WATER FLOW (l/s) NOMINAL PRESSURE DROP (kpa) CONDENSER MODEL H4R D1R H1R H2R H4R J1R WATER CONNECTION Victolic (INCH) NOMINAL WATER FLOW (l/s) NOMINAL PRESSURE DROP (kpa) GENERAL INFORMATION UNIT LENGTH (mm) UNIT WIDTH (mm) UNIT HEIGHT (mm) SHIPPING WEIGHT (kg) OPERATING WEIGHT (kg) APPROX. R134a REF. CHARGE (kg) Notes: 1.) Nominal capacity based on chilled water 12 C in, 7 C out, condenser water 30 in, 35 C out. 2.) Nominal capacity is based on standard condition, actual capacity depends on the specified operating conditions.. 3.) Evaporator and condenser models are based on standard condition and are both 2 pass. Model might change for non-standard conditions or application. 5

6 EXTENDED PERFORMANCE DATA for WXC (R134a) MODEL WXC 60-5SR 85-5SR 95-5SR 115-5SR 125-5SR 160-5SR 175-5SR 95T-5SR 125T-5SR LEAVING CHILLED WATER TEMP., C ENTERING CONDENSER WATER TEMPERATURE, C kwo kwi kwo Kwi kwo kwi Ratings based on 5.56 C water range in evaporator and 0.18m 2 / C/kW fouling factor. Interpolation between ratings is permissible but extrapolation is NOT. kwi is for compressor input. 6

7 EXTENDED PERFORMANCE DATA for WXC (R134a) MODEL WXC 145T-5SR 170T-5SR 195T-5SR LEAVING CHILLED WATER TEMP., C ENTERING CONDENSER WATER TEMPERATURE, C kwo kwi kwo kwi kwo kwi Ratings based on 5.56 C water range in evaporator and 0.18m 2 / C/kW fouling factor. Interpolation between ratings is permissible but extrapolation is NOT. kwi is for compressor input. 7

8 DIMENSIONAL DATA - ONE COMPRESSOR 8

9 DIMENSIONAL DATA - TWO COMPRESSORS 9

10 TYPICAL WIRING SCHEMATIC - TWO COMPRESSORS 10

11 TYPICAL WIRING SCHEMATIC - TWO COMPRESSORS 11

12 UNIT PREESSURE DROPS Evaporator 2 Pass - One Compressor 100 PRESSURE DROP - kpa. WXC 60-5SR WXC 85-5SR WXC 95-5SR WXC 115-5SR WXC 125-5CR WXC 160-5SR WXC 175-5SR WATER Water FLOW flow rate RATE - l/s - L/s Condenser 2 Pass - One Compressor 100 PRESSURE DROP - kpa. WXC 60-5SR WXC 85-5SR WXC 95-5SR WXC 115-5SR WXC 125-5CR WXC 160-5SR WXC 175-5SR WATER Water FLOW flow rate RATE - l/s - L/s 12

13 UNIT PREESSURE DROPS Evaporator 2 Pass - Two Compressors 100 WXC 125T-5SR WXC 145T-5SR PRESSURE DROP - kpa. WXC 170T-5SR WXC 195T-5SR WATER Water FLOW flow rate RATE - l/s - L/s Condenser 2 Pass - Two Compressors 100 WXC 95T-5SR WXC 125T-5SR PRESSURE DROP - kpa. WXC 145T-5SR WXC 170T-5SR WXC 195T-5SR WATER Water FLOW flow rate RATE - l/s - L/s 13

14 Manufacturer reserves the right to change any product specification without notice Dunham-Bush Ltd Downley Road Havant Hants PO9 2JD Tel Fax PDS-1000-C April