AIR COOLED LIQUID CHILLERS WCHAXT/Y-B SERIES (64-313TON)

Transcription

1 AIR COOLED LIQU CHILLERS WCHAX/Y-B SERIES (64 - ON)

2 INDEX Pag. General description Versions echnical features Factory fitted accessories Loose accessories Reference conditions Operating range echnical data Cooling capacity Heating capacity Water circuit pressure drops Evaporator water flow limits Correction factors Evaporator fouling factors corrections Refrigeration circuit diagram: Only cooling units Heat pump units Units with pump: echnical data Characteristic pump curves Dimensions and clearances Position of water connections Water circuit: General characteristics Water circuit diagram Weights Sound pressure level Microprocessor control system Wiring diagrams explanation Wiring diagrams Installation recommendations

3 GENERAL DESCRIPION Air cooled water chiller units, with axial fans for outdoor installation. he range consists of 0 models covering a cooling capacity from 5 to 0 kw (to 64 ON to ON). he units feature two independent circuits on both refrigerant and air side, allowing to perform maintenance activities in total safety without stopping the unit. VERSIONS: WCHAX/Y WCHAX/Y/WP - cooling only - reversible heat pump ECHNICAL FEAURES: Frame. Self-supporting galvanized steel frame further protected with polyester powder painting. Easy to remove panels allow access to the inside of the unit for maintenance and other necessary operations. Compressors. Screw semihermetic with built-in oil separator, suction filter, cranckcase heater, oil sight glass, thermal protection and hot gas shut off valves. Fans. Axial fans directly coupled to a three-phase electric motor with external rotor. A safety fan guard is fitted on the air flow discharge. Condenser. wo copper tube and aluminum finned coils. Evaporator. r. Shell and tube, with two indipendent refrigerant circuits and one water circuit. Electrical board. Includes: main switch with door safety interlock; fuses, overloadprotectionforcompressorsandthermocontactsforfans;interface relays and electrical terminals for external connections. Microprocessor for automatic control of the unit allowing continuous display of the operational status of the unit, control set and real water temperature and, in case of partial or total block of the unit, indication of security device that intervened. Electronic proportional device to decrease the sound level, with a continuous regulation of the fan speed. his device allows also the cooling functioning of the unit by external temperature till 0 C. Refrigerant circuit versions WCHAX/Y. Each unit includes two independent refrigerant circuits. Produced in copper tubing, all models have the following components: electronic expansion valve, economizer (except 0-B and 00-B models), filter-drier, level and humidity indicator, pressure transducer, high and low pressure switches (with fixed setting) and safety valve. FACO RY FIED ACCESSORIES: IM - Magnetothermic switches instead of fuses and thermal relays. RZ - Stepless regulation of the compressors to adjust the cooling capacity to the termic load of the system. CC - Pressostatic condensation control obtained by means of continuous adjustment of the fan rotation speed. B - Low temperature ki t, required in case the unit will work with evaporatorʼs outlet water temperature below 5 C. HR - Desuperheater with 0% heat recovery. HR/S - otal heat recovery serial connected for from 70% to 95% heat recovery, according to the working conditions. HR /P - Desuperheater with 00% heat recovery. X - Epoxy treated condensing coil fins. PU - Circulating pump inserted inside the unit. PD - Double circulating pump installed in the unit, working one in stand-by to the other; by every start request, the pump with the least number of working hours is activated first. RF - Cooling circuit shut off valves on liquid. FE - Evaporator heater with thermostatic control. SS - Soft start to reduce compressor starting current. WM - Web Monitoring: monitoring enables remote management of the system through communication protocols, GPRS/GSM/CP-IP. Authorized users have access to a dashboard display that provides critical system information from which the user can measure, manage and report as necessary. CP - Potential free contacts for remote alarm and control. LOOSE ACCESSORIES: MN- High and low pressure gauges for every refrigeration circuit. CR - Remotecontrolpaneltobe inserted in theroom forremote control of the unit, with the same functions as that inserted in the machine. IS - RS 485 serial interface for connection to controls and centralized supervision systems. RP - Coil protection guards in steel with cataphoresis treatment and painting. AG - Rubber vibration dampers to be inserted at the bottom of the unit to dampen possible vibrations due to the type of floor where the machine is installed. AM - Spring shock absorbers to be inserted at the bottom of the unit to dampen possible vibrations due to the type of floor where the machine is installed. FL - Flow switch is installed. to prevnt any water flow interruption. Refrigerant circuit versions WCHAX/Y/WP WP. he unit in heat pump version, in addition to the components of the only cooling unit, includes for each circuit: 4-ways reverse valve, liquid separaa- tor on the suction line, liquid receiver, check valves, pressure valve on compressor supply and liquid line shut-off valve. Water circuit. Includes: evaporator, temperature sensor, antifreeze sensor and water drain.

4 REFERENCE CONDIIONS All technical data, indicated on pages 5 e 6, refer to the following unit operating conditions: - cooling: entering water temperature C leaving water temperature 7 C ambient air on condenser 46 C. - heating: entering water temperature 40 C leaving water temperature 45 C ambient inlet air 7 C d.b., 6 C w.b. - sound pressure level (DIN 4565): measured in the free field conditions at m from the unit and at,5m from the ground. According to DIN sound pressure level (ISO 744): measured in free field conditions at m. As defined by ISO 744. he power supply is 400V/ Ph/50Hz; auxiliary supply is 0V/ Ph/ 50Hz. ORA ING RANGE Inlet water temperature Outlet water temperature Water thermal difference () Ambient air temperature Minimun chilled water outlet temperature with glycol mixture Max. operating pressure heat exchanger water side Cooling Heating C C 5* C 9 0 C 0** C -8* kpa ft WG 000 * Low temperature kit, required in case the unit will work with evaporatorʼs outlet water temperature below 5 C. ** his value can be reduced until -0 C with an optional accessory supplied prefabricated (CC). () In all cases the water range will have to re-enter within the reported limits on pag. 9.

5 ECHNICAL DA A MODEL Cooling: Cooling Capacity () Absorbed power () Cooling Capacity () Absorbed power () Heating: Heating capacity () Absorbed power () Compressors: Quantity Refrigerant Circuits Capacity steps Evaporator: Pressure drops () Pressure drops () Water connections Water volume Compressor: Unitary absorbed power () Unitary absorbed current () Unitary absorbed power () Unitary absorbed current () Oil charge Standard version: Fans Nominal power - fans Nominal current - fans Sound pressure level DIN () Sound pressure level ISO () Refrigerant charge R4a cooling only Refrigerant charge R4a heat pump Lenght Width Height ransport weight cooling only ransport weight heat pump units otal electrical consumption: Power supply Max. Current Starting current kw ON 54,9 67,4 8, 96,4 kw kw ON 64,0 78, 9,5 9 kw kw ON 65, 76, 90, 08 7 kw n n n l/s 9,,,66 6,0 8,68 gpm 46, 79,4 6,5 56,8 96, kpa ft WG,7,7 6, 6,7 7,7 l/s 0,75,4 5,7 8,6,64 gpm 70,4 08, 49, 95, 4,0 kpa ft WG 8,6 7,,6,,8 DN l gal 9, 9, 9, 9, 9, kw 46,0 5,0 6,0 74,5 8,5 A kw 8,6 4,8 5,0 6,5 70,0 A Kg m³/s 0,6,8,,,4 cfm n kw 8,0 8,0,0,0,0 A db(a) db(a) Kg Kg mm mm mm kg kg V/Ph/Hz < // > A A () Referential conditions at page 4. () Chilled water from to 7 C, air condenser 5 C

6 ECHNICAL DA A MODEL Cooling: Cooling Capacity () Absorbed power () Cooling Capacity () Absorbed power () Heating: Heating capacity () Absorbed power () Compressors: Quantity Refrigerant Circuits Capacity steps Evaporator: Pressure drops () Pressure drops () Water connections Water volume Compressor: Unitary absorbed power () Unitary absorbed current () Unitary absorbed power () Unitary absorbed current () Oil charge Standard version: Fans Nominal power - fans Nominal current - fans Sound pressure level DIN () Sound pressure level ISO () Refrigerant charge R4a cooling only Refrigerant charge R4a heat pump Lenght Width Height ransport weight cooling only ransport weight heat pump units otal electrical consumption: Power supply Max. Current Starting current kw ON kw kw ON kw kw ON kw n n n l/s gpm kpa ft WG l/s gpm kpa ft WG DN l gal kw A kw A Kg m³/s cfm n kw A db(a) db(a) Kg Kg mm mm mm kg kg V/Ph/Hz A A ,60 5,80,06 8,08 45,48 4,4 408,9 508, 60,6 70, , 8,7,,7 9, 4,7 9,5 6,5 4,4 5, 9,5 468, 579, 689, 86, ,7 4,5 7,7 0,4 0, ,,,,, 97,0 4,5 4,0 7,0 0, ,5 97,0 9,0 9,5 66, ,5 46,6 58, 70,0 76, ,0 6,0,0 5,0 5, < // > () Referential conditions at page 4. () Chilled water from to 7 C, air condenser 5 C

7 COOLING CAPACIY o ( C) AMBIEN AIR EMRA URE C kwf ONf kwe kwf ONf kwe kwf ONf kwe kwf ONf kwe kwf ONf kwe kwf ONf kwe 5 4 6,7 77, 60,0 8, 97 56,0 89, ,9 98, 7 48, , ,7 78, 8 6,0 84, 0 57,7 90,8 86 5,9 99, 75 49, , ,7 79, 60,0 9,8 8 5, , ,9 80, 66,0 86, 7 6,7 9, , , , , 8,4 9 68,0 87,5 5 64,0 9, , , , ,5 8, , 88, 66, 94,5 60, , , , 86, 56 7,8 9, 4 68,5 0 6, , , ,9 87, 66 75,6 94, 49 70, , 8 6, ,9 90 8,5 88,9 58 7, , , , 89,9 8 80,5 98, 67 75, ,9 4 66, , ,9 9,5 9 8, 98, 75 78, , , 8 60, ,7 9,5 0 85,9 99, 86 8, , , , , ,6 89 8, ,6 54 7, 8 8 6, , , , 76 78,5 6 74, , , , 74 77, , ,7 5 9, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , kwf: Cooling capacity (kw). ONf: Cooling capacity (ON). kwe: Power input (kw). o: Evaporator leaving water temperature ( in./out =5 K).

8 HEA ING CAPACIY a ( C) RH(%) CONDENSER INLE/OULE WA ER EMRA URE C 0/5 5/40 kwt ONt kwe kwt ONt kwe kwt ONt kwe ,9 64,4 88 5,5 70, ,0 76, ,0 65, 4 60,8 7, 6 6,4 78, 6,4 65,6 6 64, 7, ,0 66,0 4 66,5 7, 6 67, 80, ,7 66,7 5 7,9 7,5 54 7, 80, ,0 68,8 0 6,6 75, 6,4 8, , 69, 50 7, 75,9 5 7,7 8, 6 74, 69, 65 75,4 77, , 70, 74 77,9 77, 76 78,5 85, ,9 70, , 78, ,5 86, ,4 74,0 60 7,9 8,0 6 74,8 89, ,0 75, 95 8,9 84, 99 85,0 9, 08 87,6 77, 89,0 84, ,0 77, 4 9, 84,7 7 9,0 9, , 78, 5 99,8 86, , ,6 85,4 89,0 94, 6 89, ,5 87, , , , , , , , , , , , , a: Ambient air temperature dry bulb ( C) RH: Ambient air relative humidity (%) kwt: Heating capacity (kw) ONt: Heating capacity (ON). kwe: Power input (kw)

9 WA ER CIRCUI PRESSURE DROPS ft WG 66,6 kpa 00 P erdite di carico - Pressure drop s, 0,0 6,6, 0,0 6,6, 0, B 0-B 50-B 70-B 90-B 00-B 60-B 00-B 60-B 40-B 6,6 0, l/s 47,5 6,4 95, 6,8 58,5 7,7 7,0 475,5 64,0 79,5 09,5 gpm Water flow EVAPOR AORS WA ER FLOW LIMIS Model l/s 4,6 5,7 7, 7, 8,4 9, 0,5,9 4, 9,4 gpm 7,9 90,4,5,5, 45,8 66,4 04,5,5 07,5 l/s, 8, 0,6 0,6 4,7 8,5,9 9,8 47,4 59,5 gpm 0,8 88,5 6,5 6,5 9,5 45,7 5,5 60,8 75, 94, CORRECION FACORS If an unit is made to operate with a glycol-water solution, the following correction factors should be applied to any calculations. Ethylene glycol percent by weight (%) Freezing point ( C) Cooling capacity corr. factor Power input corr. factor Pressure drop corr. factor 0-4,5-9,5-5,5 -,5 -,5 0,975 0,95 0,9 0,9 0,88,0 0,995 0,990 0,985 0,975,0,04,08,4,0,05,,,6, Evaporator fouling factor corrections 0 Clean evaporator 0,44 x 0-4 (m² C/W) 0,88 x 0-4 (m² C/W),76 x 0-4 (m² C/W) f: capacity correction factors; fp: compressor power input correction factor; unit performances reported in the tables are given for the condition of clean exchanger (fouling factor = 0). For different fouling factors values, unit performances should be corrected with the correction factors shown above. 0,98 0,99 0,96 0,99 0,9 0,98

10 REFRIGERAR ION CIRCUI DIAGRAM WCHAX/Y 0-B and 00-B Only cooling units RM CA MV RM MHP MHP SPH SPS VP RC FD RLL RLL FD SPH SPS RC VP SPL P< MLP MC SF V V SF SPL P< MLP MC EW DESIGNA ION Condenser Evaporator Filter-drier Compressor High pressure guage (accessory ) Low pressure guage (accessory ) Axial fans Crank case heater Liquid line shut-off valve (accessory ) Discharge line Sight glass High pressure switch Low pressure switch Safety pressure gauges Pressure transmitter Safety valve Step regulation valve stepless (accessory ) Electronic expansion valve

11 REFRIGERAR ION CIRCUI DIAGRAM WCHAX/Y 0-B to90-b and 60-B to 40-B Only cooling units RM CA MV RM MHP SF FD RLL RLL FD SF MHP SPS SPS SPH VP RC SPH RC VP SPL P< MC ELE VE SCE SCE VE ELE P< SPL MC MLP V V MLP EW DESIGNA ION Condenser Electro valve (economizer) Evaporator Filter-drier Compressor High pressure guage (accessory) Low pressure guage (accessory) Axial fans Crank case heater Liquid line shut-off valve (accessory) Discharge line Heat exchanger (economizer) Sight glass High pressure switch Low pressure switch Safety pressure gauges Pressure transmitter Safety valve Step regulation valve stepless (accessory) Electronic expansion valve hermostatic valve (economizer)

12 REFRIGERAR ION CIRCUI DIAGRAM WCHAX/Y/WP 0-B to90-b and 60-B to 60-B Heat pump units V SCE VE ELE ELE VE V SCE FD FD SF RLL LR LR RLL SF MV CEC R R VP VPR MHP RM RC MC SPS SPH SCA SPS SPH MHPVPR RM RC MC VP SLG P< MLP SPL SPL P< MLP SLG DESIGNA ION Finned coil Check valve Filter-drier Liquid receiver Compressor High pressure guage (accessory) Low pressure guage (accessory) Axial fans Crank case heater 4-Way valve Liquid line shut-off valve Discharge line Water cooled exchanger Sight glass Liquid/gas separator High pressure switch Low pressure switch Safety pressure gauges Pressure transmitter Safety valve Step regulation valve stepless (accessory) Pressure valve Electronic expansion valve

13 REFRIGERAR ION CIRCUI DIAGRAM WCHAX/Y/WP 0-B and 00-B Heat pump units V V FD FD SF RLL LR LR RLL SF MV CEC R R VP VPR MHP RM RC MC SPS SPH SCA SPS SPH MHPVPR RM RC MC VP SLG P< MLP SPL SPL P< MLP SLG DESIGNA ION Finned coil Check valve Filter-drier Liquid receiver Compressor High pressure guage (accessory) Low pressure guage (accessory) Axial fans Crank case heater 4-Way valve Liquid line shut-off valve Discharge line Water cooled exchanger Sight glass Liquid/gas separator High pressure switch Low pressure switch Safety pressure gauges Pressure transmitter Safety valve Step regulation valve stepless (accessory) Pressure valve Electronic expansion valve

14 UNIS WIH PUMP echnical data MODELS Nominal power - pump Max. working pressure Head pressure () Expansion vessel volume () MODELS Nominal power - pump Max. working pressure Head pressure () Expansion vessel volume () kw,0 4,0 5,5 5,5 5,5 kpa ft WG kpa ft WG 58, 65,0 75,0 68, 56,7 l gal 9, 9, 9, 9, 9, kw 7,5 7,5 7,5 kpa ft WG kpa ft WG 6, 55,0 4,7 5, 46,7 l gal,,,,, Weight calculation: he weight in operation indicated below is composed of: - weight of the pump and pipework. he value is then to be added to the RANSPOR WEIGH of the machine referred to. he result is the total weight of the unit in opera- tion. his is a necessary detail to calculate the concrete base of the chiller and select antivibration mounts. Additional weight in operation and water connections MODELS Additional weight while funct. Kg Water connections DN Additional weight while funct. Kg Water connections DN MODELS Additional weight while funct. Kg Water connections DN Additional weight while funct. Kg Water connections DN () Referential conditions at page 4. () he expansion vessel on the units with single pump has a content of 4 lt (gal 6,).

15 UNIS WIH SORAGE ANK AND PUMPS Characteristic pump curves ft WG kpa ft WG kpa 9, 80 9, 80 80, B 80, B 66, ,6 00 5, 60 5, 60 40,0 0 40,0 0 6,6 80 6,6 80, 40, ,7 6,4 95, 6,8 58,5 90,,9 5,6 l/s gpm ,7 6,4 95, 6,8 58,5 90,,9 5,6 l/s gpm ft WG kpa 6,6 50 ft WG kpa 0, ,0 8, 66, B 70-B 90-B 9, 80 66, B 60-B00-B 50,0, ,0 0 6,6 50, , 58,5 7,7 7,0 96, 475,5 I/s gpm I/s 0 58,5 7,0 475,5 64,0 gpm ft WG kpa 0,0 60 9, 80 66, B 60-B 40,0 0, ,5 7,0 475,5 64,0 79,5 95,0 I/s gpm

16 A Y Y DIMENSIONS AND CLEARANCES Only cooling units X C X B View "X-X" 800 mm Y - Water connections. 500 mm 000 mm Clearance area 800 mm DIMENSIONS A mm B mm C mm

17 POSIION OF WA ER CONNECIONS IN OU D E F SANDARD CONFIGURAION: hydraulic connections on the left side panel view. On request, attacks on the right side (mirror dimensions). D mm E mm F mm

18 WA ER CIRCUI General characteristics Water circuit. Includes:evaporator,temperaturesensor,antifreezesensorandwaterdrain. PU - Water circuit with additional circulation pump. Includes: evaporator, temperature sensor, antifreeze sensor, circula- expansion vessel, safety valve and thermal relay. PD - Water circuit with additional double circulation pump. Includes: evaporator, temperature sensor, antifreeze sensor, double lines, expansion vessel, safety valve, check valve and thermal relais. WA ER CIRCUI DIAGRAM DESIGNA ION Gate valve Evaporator Flow switch Water manometer Double circulating pump Single circulating pump Intercepting valve Water drain Air vent Sensor for unit operation Antifreeze sensor Expansion vessel Safety valve (600 kpa - 00 ft WG)

19 WEIGHS X-X X K K K K6 K5 6xØ8 K4 40 X-X X K4 K8 K4 K9 X X X X K K7 K K8 K K6 X-X K5 K K K7 8xØ xØ8 900 K K5 500 K K6 500 X-X 5000 X K7 K6 K5 K4 K K K X-X K4 00 K 000 K 00 K X 000 K0 900 K9 4xØ8 900 K X K8 K7 K6 K5 K4 K K K 40 K X K5 000 K4 00 K 000 K 900 K 00 K0 900 K ORA ING WEIGH (Kg) K Kg K Kg K Kg K4 Kg K5 Kg K6 Kg K7 Kg K8 Kg K9 Kg K0 Kg K Kg K Kg K Kg K4 Kg K5 Kg K6 Kg ORA ING WEIGH (Kg) K Kg K Kg K Kg K4 Kg K5 Kg K6 Kg K7 Kg K8 Kg K9 Kg K0 Kg K Kg K Kg K Kg K4 Kg K5 Kg K6 Kg

20 he sound level values indicated in accordance with DIN 4565 in - ment is taken at m distance from the side of condensing coil and at a height of,5 m with respect to the base of the machine. On the noise levels that are indicated, a tolerance of +/- db(a) should be considered (according to DIN 4565). he values refer to a machine without pump. MODEL 49,5 50,0 50,5 50,5 5,0 5,0 5,5 54,0 54,0 54,5 6,5 6,5 6,5 6,0 6,5 6,0 67,0 67,5 68,0 68,5 7,0 7,5 7,5 7,5 75,0 75,5 75,5 76,0 77,0 77,0 7,5 74,0 74,0 74,0 75,0 76,0 77,0 78,5 79,0 79,5 7,5 7,5 7,5 7,5 74,0 74,5 75,5 76,0 77,0 77,5 7,0 7,0 7,5 7,5 7,0 7,5 7,5 74,0 75,0 74,5 68,5 69,0 69,0 69,5 70,0 70,0 70,5 7,0 7,5 7,0 5,5 5,0 5,5 5,5 5,0 54,0 55,0 55,5 56,0 56,5 MICROPROCESSOR CONROL SYSEM A microprocessor controls all the functions of the unit and allows any adjustments to be made. he set-points and operating parameters are set directly into the microprocessor. his type of microprocessor enables the adjustment of up to four compressors. It has a visual alarm signal, pushbuttons for the various functions, and offers a continuous control of the system as well as saving all the data in case of a cut in the power supply. hrough the display, one can input and have an indication of set values. Principal functions: indication of entering and leaving water temperature; - merical code; control of one or two pumps; at start-up; prestarting of the fans; hour counter of compressors in operation; automatic changeover of compressor and pump sequence; compressors start individually and not together; frost protection; remote on-off; operation signalling; manual operation; manual reset; electronic card for connection to management and service systems. Alarms: high and low pressure and overload on each compressor;. Accessories: electronic card for connection to management and service systems, remote display.

21 WIRING DIAGRAMS EXPLANA ION DESIGNA ION DISPLAY (USER INERFACE) REMOE DISPLAY * ECONOMIZER AUXILIARY CIRCUI FUSES COMPRESSOR FUSES CIRCUI PUMP FUSES SORAGE ANK HEAER FUSE FAN MOOR FUSES LIQU IJECION AUXILIARY CONACOR COMPRESSOR CONACOR PUMP CONACOR SORAGE ANK HEAER CONACOR IMER SWICH FAN MOOR CONACOR COMPRESSOR PUMP FAN MOOR COMPRESSOR CAPACIY SEPS FLOW SWICH HP SWICH CIRCUI MOOR PROECION COMPRESSOR LP SWICH CIRCUI SORAGE ANK/EVAPORAOR HEAER COMP. CRANKCASE HEAER EVAPORAOR HEAER PHASE SEQUENCE RELAY SED GOVERNOR ELECRICAL BOARD HEAER PIS HEAER COMPRESSOR OVERLOAD RELAY PUMP OVERLOAD RELAY ANIFREEZE SENSOR MICROPROCESSOR BY-PASS VALVE EXPANSION BOARD MAIN SWICH EMRAURE SENSOR LIQU LINE VALVE DISCHARGE LINE SENSOR SERIAL INERFACE * AMBIEN AIR EMRAUR SENSOR AMBIEN AIR EMRAUR HERMOSA AUXILIARY RASFORMER PRESSURE RANSDUCER LOW PRESSURE RANSMIER V PRESSURE RANSMIER ELECRICAL BOARD HERMOSA AUXILIARY RASFORMER REVERSE CYCLE VALVE CIRCUI * Loose accessory

22 4 L L L 9 B W G B W G + M B W G B W G + M POWER ELECRICAL DIAGRAM: WCHAX/Y 0-B to 40-B - Wiring diagram explanation at page ; - Dotted lines indicate optional electrical connections or to carry out during the installation. FC FC FV X: SG KC RC KC KC5 KC RC KC4 KC6 X: L L L U V W IN+ IN- RG LL L X: 0 SSC X: SSC 400V/50Hz/Ph/ RC L L L U V W IN+ IN- L L L U V W IN+ IN- RC4 Y- Y+ X: X: 4 0 0V S C 0V S C KV K MC MC L L L RV L L L RV MV MV CONROL ELECRICAL DIAGRAM: WCHAX/Y 0-B to 40-B - Wiring diagram explanation at page ; - Dotted lines indicate optional electrical connections or to carry out during the installation. SB COM COM C COM AI AI AI AI +VDC A GND AI +5V AI AI AI AI AI AI AI AI AI AI L L L FA RF KA Q Q FA RQ VQ KC KC R C R C FA R C R C 4 KA RESE PI RESE PI X: R C 44 R C PD PI 54 L N P H 69 P H P L 7 L 74 N PI 4 P H 8 P H P 8 R V 7 6 R V 5 4 R V R V L R V R V 4 R V 0 94 R KP 97 R KP 0 SA 04 0 SL A PL S M 08A PL S M E C E C 4 P C P C 6 6 C P 6 5 REV

23 L L L L L L L L L L L L L M + M POWER ELECRICAL DIAGRAM: WCHAX/Y 0 - Wiring diagram explanation at page ; - Dotted lines indicate optional electrical connections or to carry out during the installation. L L L KV KV KV4 KV5 KV6 KV7 L L L RV L L L RV4 L L L RV5 L L L RV6 MV MV4 MV5 MV6 L L L RV7 L L L RV8 L L L RV9 L L L RV0 L L L RV L L L RV L L L RV L L L RV4 MV7 MV8 MV9 MV0 MV MV MV MV4 FP FP FP FRA L L L KP R KRA KP R KP R MP MP MP RAC CONROL ELECRICAL DIAGRAM: WCHAX/Y 0-B to 40-B Wiring diagram explanation at page ; Dotted lines indicate optional electrical connections or to carry out during the installation. AO AO AO AO L N AO AO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO C NO NC C NO G Go R0 CANH CANL GND Y- Y+ D 0 0 MB MB 0 FA FA X: MD N MD L N 6 7 R 4A A A A 8 P C 4 P C P C 6 S C 0V K C K C K C S C K C 4 K C 5 K C 6 K V K V K V K V 4 K V 5 K V 6 K V 7 KRA KA X: ON/OFF 4A 4 A LARM EMERGENCY OFF D R EMOE DISPLA Y SD X5 B SV V V X5 B 0 SV 4 V V

24 B W G B W G + M B W G B W G + M POWER ELECRICAL DIAGRAM: WCHAX/Y/WP 0-B to 40-B - Wiring diagram explanation at page ; - Dotted lines indicate optional electrical connections or to carry out during the installation. FC FC FV X: SG KC RC KC KC5 KC RC KC4 KC6 X: L L L U V W IN+ IN- RG LL L X: 0 SSC X: SSC 400V/50Hz/Ph/ L U L V L W RC L U L V L W IN+ IN- IN+ IN- RC4 Y- Y + X: X: 0 4 0V SC 0V SC KV KV KV KV4 MC MC L L L RV L L L RV L L L RV L L L RV4 L L L RV5 L L L RV6 MV MV MV MV4 MV5 MV6 L L L RV7 MV7 CONROL ELECRICAL DIAGRAM: WCHAX/Y/WP 0-B to 40-B - Wiring diagram explanation at page ; - Dotted lines indicate optional electrical connections or to carry out during the installation. SB COM COM C COM AI AI AI AI +VDC A GND AI +5V AI AI AI AI AI AI AI AI AI AI AO AO AO AO L N AO AO L L L Y- Y + Y + FA RF 4 L L L KA Q KC KC FA KA RQ VQ R C R C I R C R C RESE PI RESE PI X: 4 4 C R 4 44 R C F L 5 5 P I 54 L N P H P H 7 7 L P 74 7 L N P I 8 8 P H R 4 V 6 5 R V 4 R V P L P H 44 R V R V 4 R V R V 0 9 R V R P K P R P K P SL SA 06 P 69 06A 7 70 L A 08 P S M L I S M V 4 4 V I ILQ ILQ P C 4 P C A A 8 P C A A P C 4

25 M M POWER ELECRICAL DIAGRAM: WCHAX/Y/WP 0-B to 40-B - Wiring diagram explanation at page ; - Dotted lines indicate optional electrical connections or to carry out during the installation. L L L FV FP FP X: 0 9 RG L L L U V W IN+ IN- X: Y- Y + KV4A KV5 KV6 KV7 L L L RV9 L L L RV0 L L L RV L L L RV L L L RV L L L RV4 L L L RV5 L L L RV6 MV9 MV0 MV MV MV MV4 MV5 MV6 MV7 KP R L L L MP KP R L L L MP CONROL ELECRICAL DIAGRAM: WCHAX/Y/WP 0-B to 40-B - Wiring diagram explanation at page ; - Dotted lines indicate optional electrical connections or to carry out during the installation. C NO C NO C C NO C NO C NO C NO C NO C NO C NO C NO C NO NO C NO C NO C NO C NO C NO C NO C NO C NO NO NC C NO G Go C A N CANH CANH CANL CANGND G N D D+ D- 0 0 MB 0 FA4 MD L N X5 V V SV E C E C K C K C K C K C 4 K V 5 KV4A K V 4 K V K V K V K V 6 K V 7 K A X: F O N/O F A LARM 4A E MERGENCY OF F SUMMER/WINER D J5 X: SD DR J5 REMOE DISPLAY X: SS 8 7 7A 8A 8B MODBUS O BMS SERIAL INERFACE FA5 MD X5 L B N 0 MB X: R0OHM CAN NEWORK V V SV

26 INSALL LAION RECOMMENDA IONS Location: - Strictly allow clearances as indicated in the catalogue. - Ensure there are no obstructions on the air suction and discharge side. - Locate the unit in order to be compatible with environmental requirements (sound level, integration into the site, etc.). Electrical connections: - Check the wiring diagram enclosed with the unit, in wich are always present all the instructions necessary to the electrical connections. - Supply the unit at least hours before start-up, in order to turn crank- case heaters on. Do not disconnect electrical supply during temporary stop periods (i.e. week-ends). - Before opening the main switch, stop the unit by acting on the suitable running switches or, if lacking, on the remote control. - Before servicing the inner components, disconnect electrical supply by opening the main switch. - he electrical supply line must be equipped with an automatic circuit breaker (to be provided by the installer). - Electrical connections to be done: hree-wire power cable + ground cable; - Optional electrical connections to be done: External interlock; Remote alarm signalling. Hydraulic connections: - Carefully vent the system, with pump turned off, by acting on the vent valves. this procedure is fundamental: little air bubbles can freeze the evaporator causing the general failure of the system. - Drain the system during seasonal stops (wintertime) or use proper mixtures with low freezing point. - Install the hydraulic circuit including all the components indicated in the recommended hydraulic circuit diagrams (expansion vessel, storage etc.). Start up and maintenance operations: - Strictly follow what reported in use and maintenance manual. All these operations must be carried on by trained personnel only.

27 U.S.A , North Central Expressway Suite 40, Dallas exas 75 Phone: Fax: westairind.com U.A.E. Dubai P. PO. Box 954 Phone: Fax: westairind.com All models, sizes, dimensions, and specifications are subject to change without prior notice. CAALOG # WCHAX/Y-B-0-0