Service Manual
Contents
1. Fig 7 2 7 4 1 Installing the Unit Directly On the Ceiling Fig 7 1 Select the installation location according to the above mentioned considerations and guidelines Mark 4 holes on the ceiling according to the unit s mounting bracket holes 10 Drill adequate holes and fix the long ceiling anchors 11 in position Lift up the unit onto the hanger anchors through the mounting brackets Insert four rubber shock absorbers on the four anchors as shown in Fig 7 1 Lock the assembly with the lock nut Should the unit be installed on a rigid surface stick four rubber absorbtion cushions on the four corners of the base In any mode of installation it is recommended to place under the unit an acoustic insulation sheet 9 7 5 Connecting the Water Piping Clearly identify the water supply piping An external safeguard device shall be connected to the water source to limit its output pressure in excess of atmospheric pressure to 6 bar Use flexible hoses 4 to connect the water piping according to Fig 7 3 For piping size see technical data tables Use only premium quality flexible hoses and make sure it withstands the system water pressure Note Ample pressure hoses must be installed in tall buildings 19 LINIGJUS Advanced air conditioning systems WS series e Connect the incoming water to the WATER IN connection and2. 15 LINIGJLIzS Advanced air conditioning systems WS series 7 INSTALATION INSTRUCTIONS 7 1 General All parts and accessories are packed and shipped with appropriate measure to ensure that everything is protected during transportation The installation team must be familiar with the installation requirements to exercise due care in handling and to prevent damage to the equipment The following instructions are in addition to any state and municipal regulations which may apply These instructions do not cover all features concerning HVAC installation or methods of procedure The appliance shall be installed in accordance with the national wiring regulations The installation must be performed in accordance with manufacturer s specifications using only approved piping original cables and original accessories Note The appliance is classified as a stationary class I motor operated appliance 7 2 Electrical Requirements e The appliance is stationary and shall be connected to the electrical supply by fixed wiring The air conditioner must be directly connected to an appropriate power supply Use only fuses as specified in the data tables Use only a single length power cable without extensions If the supply cord is damaged it must be replaced by a qualified electrician and in accordance with national wiring regulations e Cable and conduit entries shall be suitable for cables or conduits having maximum overall diameters o
3. Low pressure control ALFA 260U Room Thermostat CC1 ER NV CH NCI nv LRST T contro 220V TB1 Q1 lo Id IS w COMP 1 N 220V COMPRESSOR NO VOLT RELAY ON ON ON Pl 1 2 3 POWER UNIT ALFA SW1 DIP SWITCH1 ON HEAT PUMP WATER SENSOR EVAP COIL SENSOR RETURN AIR SENSOR HIGH PRESSURE LOW PRESSURE ALFA 123U Power switch unit CC Compressor contactor RV1 4 way valve MAIN POWER Cable 5715 155 25125 25 25 25 25 4 4 10 10 Cross Section Area mm 30 LINIGJUS Advanced air conditioning systems WS series 10 TROUBLESHOOTING GUIDE 10 1 Troubleshooting Notes Important Reset Once the unit has stopped due to failure restart is AA possible after resetting Reset the system by pressing ON OFF button on the room thermostat Call the technician for assistance should the failure be repeated A A Warning Always unplug the A C before performing cleaning or maintenance activities Note Check for broken wires and loose cable lugs first 10 2 Failure Code Troubleshooting m Display Possible Cause Corrective Action ER1 Short disconnected or faulty Check communication cable Replace communication cable cable if faulty Communication failure between display and power units Short disconnected or faulty Check return air sensor Replace ER2 room thermostat air sensor thermostat if faulty Room thermostat Sensor failure Unit continues running Short di
4. Unit must be charged according to the nameplate after localizing the gas leak Clean filters Disassemble plastic drain pipe from spout of evaporator drain pan Flush with clean water Replace the capacitor Replace the P C B assembly Replace the fan motor Replace faulty contactor Replace the compressor UNIQUI Advanced air conditioning systems 10 4 Poor Cooling Troubleshooting m Symptom Probable Cause Corrective Action Refrigerant flow failure Air circulation failure Freezing Conditions at Evaporator Coil Refrigerant gas shortage Excessive overcharging of refrigerant Gas leakage Clogging of strainer or capillary tube 4 Way valve is defective Solenoid 4 Way valve is defective Compressor is defective Air filter is clogged Air shutters are closed Clogged air filter Faulty capacitor Faulty fan motor Air discharge shutters are too closed Lack of refrigerant 35 WS Series Charge refrigerant gas Recharge gas Repair leakage Replace strainer Replace 4 Way valve Replace solenoid Replace compressor Clean air filter Open air discharge shutters Clean filter Replace capacitor Replace fan motor Open air discharge shutters Check for leaks and add refrigerant LINIGJLIzS Advanced air conditioning systems WS series 10 5 Poor Heating Troubleshooting Heat Pump m Symptom Probable Cause Correct
5. 11982 14285 15180 Heat Extraction Heating Btu h 31723 37124 40907 48768 51825 Power Supply V Ph Hz 230 1 50 230 1 50 400 3 50 400 3 50 400 3 50 Time Delay Fuse Amp C20 3xC16 3xC16 3xC16 Refrigerant Charge 1500 1600 2300 2600 2700 Dimensions LxWxH 1090x600x520 1290x600x520 1290x600x560 1370x700x560 1370x700x560 1 Design data for cooling Air entering temperature 27 C db 19 C wb and water inlet temperature 29 C Design data for heating Air entering temperature 21 C and water inlet temperature 20 C 2 Excluding electrical heating element 3 Net static pressure available at fan discharge at nominal capacity 4 Available also in 400 3 50 Cooling capacity 10 9 17232 58830 12 5 19715 67307 13 9 21978 75034 13205 45080 15708 53626 en v w N N Data applicable for R410A For additional information contact Unique ltd Product specifications are subject to change without notice Appearance of products may differ slightly from catalog 9 LINIGJUS Advanced air conditioning systems WS series 2 1 Technical Data Table WS Package Units continued WS 75 to WS 102 WS 120 and WS 144 ws 75 WS 85 WS 02 WS 20 WS 44 Le Btu h 74200 84500 143200 Power Watt 5573 6314 7601 8862 10646 f 2 Consumption Watt 6194 6883 8743 9930 11786 Operating Cooling Amp 3x14 9 3x16 2 3x18 2 3x22 4 3x31 1 i mp 3x16 9 3x18 3 3x21 2 3x26 0 3x35 3 90 3 92 3 90 3 92 3 94 C O
6. Cooling C O P Heating M Air Flow CFM Net Static Pressure S M Water Flow GPM Watt Heat Rejection Cooling Btu h 14133 Watt 3211 Heat Extraction Heating Btu h 10963 m wan e o o 9 1 Design data for cooling Air entering temperature 27 C db 19 C wb and water inlet temperature 29 C Design data for heating Air entering temperature 21 C and water inlet temperature 20 C 2 Excluding electrical heating element 3 Net static pressure available at fan discharge at nominal capacity 4 Available also in 400 3 50 Cooling capacity Wu Data applicable for R410A For additional information contact Unique ltd Product specifications are subject to change without notice Appearance of products may differ slightly from catalog 8 UNIQUI Advanced air conditioning systems WS series 2 1 Technical Data Table WS Package Units continued 1 Watt 10516 12449 13679 15700 17428 Btu h 35900 42500 46700 53600 59500 1 Watt 12390 14382 15847 18893 20240 Heating capacity UE u 42300 49100 54100 64500 69100 Consumption Watt 2689 3259 3553 4015 4550 3098 3508 3865 4608 5060 Operating Amp 17 7 18 1 3x8 1 3x10 0 3x10 5 Current Amp 13 9 22 3 3x9 7 3x11 7 3x12 4 Net Static Pressure 9 mm H O 3 91 3 82 3 85 3 91 3 83 4 00 4 10 4 10 4 10 4 00 2040 2550 2720 3060 3400 1200 1500 1600 1800 2000 3 8 M h 1 9 Water Flow GPM Watt Heat Rejection Cooling Btu h Watt 9292 10874
7. available upon request Reset and restart after failure Once the unit has stopped due to failure restart is possible after resetting Reset the system by pressing ON OFF button on the room thermostat Call the technician for assistance should the failure be repeated Restart time delay Compressor starting time delay is 1 min at first start and 3 5 min before each restarting Timer accuracy is 20 sec Evaporator fan control only for Heat Pump unit In cooling mode the fan runs continuously In heating mode the fan stops running 15 sec after compressor stop Evaporator fan control only for units with electrical heating elements In cooling mode the fan runs continuously In heating mode the fan stops running 40 sec after the heating elements are turned off Water temperature control only for Heat Pump unit Compressor stops if water temperature reaches below 4 C Compressor restart enabled at water temperature above 10 C Failure in water temperature sensor does not stop unit operation If failure occurs 3 times per hour and or holds for 1 full hour signal of failure ER8 will appear stable and On Off press for re start not allowed Re start only by shut off and switch on of power supply Heating control only for units with electrical heating elements The return air temperature sensor switches ON the first heating group at room temperature 1 C lower than the set temperature Heating is switched OFF at set point Second heatin
8. basic insulation This insulation may be provided by the sheath of the supply cord or by other means 16 LINIGJUS Advanced air conditioning systems WS series gt bp DD E The arrangement of the terminals or the length of the conductors between the cord anchorage and the terminals shall be such that the current carrying conductors become taut before the earth conductor if the cord slips out of the cord anchorage Conditional connection to power network provides not more than 0 09 ohm of power system impedance Important Means for disconnecting from the supply mains having a contact separation in all poles that provide full disconnection under overvoltage category III shall be incorporated in the fixed wiring and directly connected to the supply terminals in accordance with the wiring rules Important Means for disconnection from supply mains must be incorporated in the fixed wiring in accordance with the national wiring regulations Important The control wires between the main control box and the wall mounted thermostat utilize low voltage 12V DC The supply mains cable and control wire flat cable between the wall mounted thermostat Alfa 261 and electrical box shall be passed in separate different ducts and not in proximity to each other Note Main circuit breaker and power supply must always be ON in models that their compressor is equipped with oil heating element If disconnected make sure that powe
9. facilities for heating utilizing a 4 way reversing valve which switches the unit into heating mode In heating mode adequate temperature of the cooling water must be insured Alternatively electric heating elements can be used for heating In such configuration the units are equipped with additional protection elements Scope of supply includes package units and split condenser units Unique WS appliances are adequate for ambient temperature range of minimum 19 C and maximum 35 C and water input temperature range of minimum 16 C and maximum 35 C All Unique WS air conditioners are ISO 9001 2000 and CE certified THE STANDARDS INSTITUTION OF ISRAEL LINIGJUS Advanced air conditioning systems WS series 1 2 Manufacturing Options WS air conditioners are available in horizontal or vertical execution Standard layout includes SL SR FL and FR setup Additional configurations are available upon request SL SR LINIGJLIzS Advanced air conditioning systems WS series 1 3 Nameplate Information Technical information for a specific unit appears on the unit nameplate which is attached to the indoor and or the outdoor units The unit nameplate includes the following information UNIQUI Advanced air conditioning systems WS series 2 1 Technical Data Table WS Package Units Watt Btu h 1 Watt Heating capacity Btu h 14500 2 Consumption Heating Watt Operating Cooling Amp Current Heating A
10. strainer Check cooling tower or the cooling water source for proper operation a Check cooling tower or the cooling water source for proper operation b Heat exchanger is clogged Clean the heat exchanger or replace it oee troubleshooting guide section 10 3 item 4 oee troubleshooting guide section 10 3 item 7 Open air shutters Check water filter Check return air temperature sensor Replace sensor if faulty UNIQUI Advanced air conditioning systems 10 3 General Troubleshooting m Symptom A C fails to start Only indoor fan motor works although cooling or heating is desired Only fan motor is working No cooling and or heating take place No air supply at indoor unit 1 Probable Cause Power supply to unit not connected display is blank Fuse Blown display is blank Electric supply wall socket is defective The selected mode is on Fan Only or on Cool when heating is desired Temperature is set to a value which is too high in Cool mode Faulty compressor Overload safety device on compressor is cut out due to high temperature Compressor run capacitor is burnt Compressor winding shorted Indoor fan motor is blocked or turns slowly Indoor fan motor capacitor is burnt Indoor fan motor winding is burnt Clogged air filters 233 WS series Corrective Action Check for proper connection of power plugs in wall socket Check re
11. 09 WS series LUNIGJUS Advanced air conditioning systems 8 2 Terminal Box Location Single Phase Unit ONLY FOR WITS WITH ELEC TRCAL HEATING ELEMENTS Fig 8 2 393 WS series LUNIGJUS Advanced air conditioning systems 8 3 Terminal Box Location 3 Phase Unit e Lie e A e OS UNS S OF A SA TT 7 V XOU AUS DNA LSLIVE Ly A IITA HEATING ELEMENTS ONLY FOR UNITS WITH R ECTRCAL Fig 8 3 24 LINIGJU Advanced air conditioning systems WS series 9 Electrical Wiring Diagrams 9 1 Electrical Wiring Diagram Single Phase Cooling Only Model 260U D mM control 220V l RUN START cop Cop MAIN POWER COMPRESSOR control 220V 2 2 ON ON ON POWER UNIT ALFA 12 5U 1 2 3 DIP SWITCH1 2 3 OFF Pun wit coin nn mI ALFA PE j HPi Lin LPI 260U d MEE E 4 4 con CAP ee T EVAP RETURN HIGH PRESSURE LOW PRESSURE COIL SENSOR AIR SENSOR EVAPORATOR FAN HP High pressure control ALFA 123U Power switch unit LP Low pressure control ALFA 260U Room Thermostat CC Compressor contactor MAIN POWER Cable cro Sesion arce mae 5 25 25 8 8 o Ic cd 25 LINIGJUS Advanced air conditioning systems WS series 9 2 Electrical Wiring Diagram 3 Phase Cooling Only Model 260U 360 contro 220V NO VOL
12. 3x4 6 3x6 1 3x7 6 3x9 1 3x9 1 3x12 2 3x13 7 3x13 7 3x15 2 3x18 2 3x20 3 10 10 16 20 25 32 wsss ws 12 Dwsam 14 Dwswa v 9 Data applicable for R410A For additional information contact Unique ltd Product specifications are subject to change without notice Appearance of products may differ slightly from catalog 213 WS series LINIGJUS Advanced air conditioning systems 6 1 Refrigeration Cycle Cooling Only DX SELF ACTING FLOW LIMITING VALVE OPTION WATER GAS HEAT EXCHANGER WATER IN am HIGH PRESSURE SWITCH WS REFRIGERATION CYCLE COOLING ONLY WASHABLE AIR FILTER SUCTION COMPRESSOR ACCUMULATOR AIR IN j INDOOR COIL LOW PRESSURE SWITCH EXTERNAL EQWALIZER RS EXPANSION DEVICE COIL SENSOR a7 AIR OUT p CENTRIFUGAL FAN ELECTRICAL HEATER ELLEMENT 14 WS series LINIGJUS Advanced air conditioning systems NV3 1V9f3lilNio Q 8 amp LNO NIV YOSNAS 71109 6 2 Refrigeration Cycle Heat Pump 3gn L Adv Tlldvo HO J IVA NOISNVdX3 ANO 3AVA NOISNVdX3 HOS HOLIMS HOLIMS dH nsSdHd JYNSSIYd 3Z11VN03 WNYALXS MOT HOIL ag E NI H3LVM HIONVHOXZ T 1V3H gt S SVO MALVM y HOLVINNN99Y HOSSIHAWON O NI XIV D NOILONS van Z O ep O O YILT Z dv lt 318VHSVM m O z r lt LNO H31VM HOSN3S YALVM dWAd LV3H 41949 NOILVeH39Oldd38 SM
13. H2 Heaters contactor ALFA 260U Room Thermostat TS1 TS2 Safety thermostat ALFA 123U Power switch unit MAIN POWER Cable 55 55 25 25125 25 25 25 25 4 4 10 10 Cross Section Area mm 28 LINIIGCJL I WS series Advanced air conditioning systems 9 5 Electrical Wiring Diagram Single Phase with Heat Pump Model 260U 360 control 220V QM f TBI L1 RUN START cap cap MAIN POWER COMPRESSOR control 220V ON ON ON POWER UNIT ALFA b H Q O O O O CCllai C A2 N 220V 1 2 3 SW1 DIP SWITCH1 ON AIR NN 1 e 3 IN E N gt oi O T C N2XY 3x1 5 ale ae u 3 1 HERE EVAPORATOR FAN HP High pressure control LP Low pressure control ALFA 260U Room Thermostat i COMP CONTACTOR M RV1 o EL h BL mA m me 4 E A A com 7 CAP1 Es HEAT PUMP WATER SENSOR EVAP COIL SENSOR RETURN AIR SENSOR HIGH PRESSURE LOW PRESSURE ALFA 123U Power switch unit CC Compressor contactor RV1 4 way valve MAIN POWER Cable cro Sesion ace ae 525 25 8 e 8 Ic cd 29 360 Advanced UNIQUI WS Series air conditioning systems 9 6 Electrical Wiring Diagram 3 Phase With Heat Pump Model 260U TB1S QM MAIN POWER control 220V N 220V COMP CONTACTOR ZT N2XY 3x1 5 ALFA 260U EVAPORATOR FAN HP High pressure control LP
14. P 4 10 4 20 4 00 4 10 4 20 M h 4080 4760 5100 6800 8160 CFM 2400 2800 3000 4000 4800 mm H O 6 4 M h 3 9 GPM 17 3 Watt 27307 Btu h 93226 Watt 19201 Btu h 65554 Cooling capacity Heating capacity We Air Flow C Net Static Pressure Water Flow 19 6 31065 23 5 37244 43601 02591 106056 127150 148855 179545 V Ph Hz 400 3 50 400 3 50 400 3 50 400 3 50 mp 3xC20 3xC25 3xC40 1 Design data for cooling Air entering temperature 27 C db 19 C wb and water inlet temperature 29 C Design data for heating Air entering temperature 21 C and water inlet temperature 20 C 2 Excluding electrical heating element 3 Net static pressure available at fan discharge at nominal capacity 4 Available also in 400 3 50 27 6 33 2 Heat Rejection Cooling oi o KR BA o M Oo O Heat Extraction Heating Power Supply oe O on R gt Time Delay Fuse Water Piping in out Data applicable for R410A For additional information contact Unique ltd Product specifications are subject to change without notice Appearance of products may differ slightly from catalog 10 LINIGJUS Advanced air conditioning systems WS series 3 Technical data table WSC Water Source Console WSC 12 3281 11200 4247 14500 O Watt Btu h 1 Watt Power Watt Operating Amp Current Amp CFM Net Static Pressure 3 mm H20 M h Water Flow GPM Watt Heat Rejection Coolin
15. Service Manual WS SERIES PACKAGE UNITS And SPLIT SYSTEM WATER SOURCE AIR CONDITIONERS WITH R410A REFRIGERANT n en UNLU Advanced air conditioning systems LINIGJUS Advanced air conditioning systems WS series Contents SAFETY TIRS a bes ecuvewseesasees 4 1 INTRODUCTION ccccccccsccccccccccccccccccccccccccceccesceccecceccececcescesess 5 2 TECHNICAL DATA TABLES ccccccsoscccccccccccccccecceccceccecceccceccescs 8 3 WATER SOURCE CONSOLE UNITS cccccccccccccccccccccccccccccccecceccess 11 4 SPLIT CONDENSER UNITS cccccccccscccccccccccccccccceccecceccecescescecs 12 5 HEATING ELEMENT RECOMMENDATIONS ccccccccccccccccccccccccccs 13 6 REFRIGERATION CYCLE DIAGRAMS ccccccccccccccccccccccecccccceccece 14 7 INSTALLATION INSTRUCTIONS cccccccccscccceccecccccecccceccescesccecs 16 8 INSTALLING THE CONTROL SYSTEM AND CONNECTING POWER 22 9 ELECTRICAL WIRING DIAGRAMS ceeeeeeee eene eee ehe hene nnne 25 10 TROUBLESHOOTING GUIDE 4 2 31 11 CONTROL PROGRAMS and OPERATION INSTRUCTIONS 37 LINIGJUS Advanced air conditioning systems WS series SAFETY FIRST safe operation is UNIQUE s number one priority when designing products Please read all the safety information and the instructions completely prior to beginning the installation and operation of the unit UNIQUE products are designed for HVAC use Using this equipment for an
16. T RELAY COMP 1 MAIN POWER COMPRESSOR control 220V ON ON ON POWER UNIT ALFA T 12 U 1 2 3 DIP SWITCH1 2 3 OFF pong AIR O Q O O Q Q o O Q CC1 a A2 i i COMP CONTACTOR mi x ALFA 5 pU HP h 260U FRE 7 CAPI a I EVAP RETURN HIGH PRESSURE LOW PRESSURE COIL SENSOR AIR SENSOR I LAJ EVAPORATOR FAN HP High pressure control ALFA 123U Power switch unit LP Low pressure control ALFA 260U Room Thermostat CC Compressor contactor MAIN POWER Cable 5715 55 25 25 25 25 25 25 4 4 10 10 Cross Section Area mm 26 LINIGJU Advanced air conditioning systems WS series 9 3 Electrical Wiring Diagram Single Phase with Electrical Heating Elements Model 260U contro 220V N 220V QM TBI1 TB1SC1 L1 E COMP 0 RUN START 3 e cop cap LUNA 32 55 LUNA 2255 RED MAIN POWER HEATERI HEATERE 1 3kW 1 3k COMPRESSOR control 220V UNIT ALFA 123U ror DIP SWITCH1 2 3 OFF ond AIR gt LJ CCllai CHll4y CH Al Ae 4e e 1 i HEATER 1 HEATER 2 CONTACTO CONTACTOR CONTACTOR D p i THERMO SWITCH ALFA amp jb iM 1H HP h z Fes ea T 260U p I nr OEN man AY CAPI D og THERMO SWITCH 2 TS2 EVAP URN HIGH PRESSURE LOW PRESSURE T COIL SENSOR AR SENSOR EVAPORATOR FAN 60 3 C open 46t6 C close aut HP High press
17. aneously for 2 seconds display real temp continuously Fan speed select pushbutton Available speeds are Slow Medium High andAuto Selection pushbutton for mode of operation Available modes are Cooling Heating Auto and Fan Pushbutton for turning the unit on and off This pushbutton is also used for failure canceling Cooling operation indicator LED LED ON indicates that the unit is cooling LED Blinking indicates delayed cooling action LED OFF indicates no cooling demand This LED is ON in cooling and in Auto modes In the rest of the modes the LED is OFF This LED is ON in heating and in Auto modes In the rest of the modes the LED is OFF Heating operation indicator LED LED ON indicates that the unit is heating LED Blinking indicates delayed heating action LED OFF indicates no heating demand The first two digits display the set temperature Simultaneous pressing of both and buttons will display the actual room temperature Display of fan position A Fan in Auto F Unit in FAN mode YK High Speed v Medium Speed A Low Speed 30 LINIGJLIzS Advanced air conditioning systems WS series 40 Unique Engineering amp Air Conditioning Mitzpe Sapir Industrial Park P O B 13201 Tsur igal 44862 ISRAEL Tel 972 9 7498707 Fax 972 9 7498708 E mail unique unique eng co il WS SM EN V04 RO1 JAN 2010
18. ature The temperature may be adjusted within the range of 16 C and 30 C Use temperature setting pushbuttons to increase and decrease the temperature Cooling Mode In this mode the air conditioner cools dries and filters the air in the room The set temperature is maintained Heating Mode In this mode the air conditioner heats and filters the air in the room The set temperature is maintained Auto Cooling Heating Mode In this mode the air conditioner automatically selects the cooling or heating position according to room conditions and set temperature Auto Ventilation Mode In this mode the air conditioner automatically changes the speed of the fan in accordance with the room temperature At room temperature close to the set point the fan rotates at low speed while speed increases when room temperature is up Display shows A Fan Only Ventilation Mode The air conditioner maintains continuous air flow without cooling or heating Display shows E 20 N as UNIQUI Advanced air conditioning systems WS Series 11 3 Wall Mounted Thermostats 260U 1 Temp 2 Fan 3 Mode 4 On Off 5 Active Cool LED 6 Cooling LED T Heating LED 8 Active Heat LED 9 Display Temp 10 Display Fan Pos Temperature setting pushbuttons temp rise temp drop Continuous press on 2 buttons simultaneously will display momentarily real temp flashing Continuous press on 2 buttons simult
19. d LED on RST Controller wherever applicable If LED is OFF change RST wires If LED is ON check Phase voltage Reset automatic circuit breaker or replace line fuse Repair or replace wall socket Check if the room thermostat is on the desired mode If not select the correct mode refer to your User Manual Observe the temperature setting on the room thermostat Replace compressor owitch Off power and try again after one hour Replace compressor run capacitor Replace compressor Check voltage Repair wiring if necessary Check indoor fan wheel if tight on motor shaft Tighten if necessary Replace indoor fan motor capacitor Replace indoor fan motor Clean filters UNIQUI General Troubleshooting continued m Symptom Low Capacity Water accumulates and overflows from evaporator drain pan Indoor fan is not running at all Compressor motor is not running at all Probable Cause Lack of refrigerant causes ice formation on the evaporator coil in Cool mode Clogged air filters Drain pan pipe or hose is clogged or the spout of drain pan is clogged Failure in motor capacitor No voltage out of P C B assembly for fan motor Motor winding failure check resistance Failure in compressor motor magnetic contactor Compressor motor winding failure check resistance 204 Advanced air conditioning systems 1 WS series Corrective Action
20. ers guards and safety devices are correctly installed and in proper position Danger Failure to follow proper assembly and operational procedures may cause damage to equipment or personal injury LINIGJLIzS Advanced air conditioning systems WS series 1 INTRODUCTION This Service Manual provides comprehensive technical documentation for all models of UNIQUE WS split and packaged water source air conditioners The information contained in the manual is useful for application engineers architects system designers contractors and various level service and installation personnel The manual also contains information about the optional features offered by the UNIQUE WS series as well as helpful information on electrical wiring diagrams and refrigeration cycle diagrams for the various models Product specifications are subject to change without notice Appearance of products may differ slightly from manual images 1 1 Product Overview Unique WS air conditioners are operating with water cooled condensing unit and can be utilized in applications such as residential industrial and commercial buildings offices schools and other facilities The operation of Unique WS air conditioners is quiet and durable with low maintenance requirements and provides efficient year round cooling and heating The units are suitable for cooling tower installations ground water sources or open water circuits Unique WS air conditioners feature heat pump
21. essure failure of 5 seconds long shuts compressor After compressor delay 3 minutes if L P closed the unite returns to normal operation If L P still open re start the compressor and activates the fan in high speed After 1 minute if L P still opens the system shuts down and the displays show ER5 flashing Heating mode The fan operates in LOW speed for 5 minutes and then change to desire speed At low pressure failure of 5 seconds long shuts compressor After compressor delay 3 minutes If L P still open re start the compressor and activates the fan in desire speed After 1 minute if L P still open the compressor stops Fan stop after 20 seconds and the displays show ER5 flashing High pressure protection High pressure compressor protection Cooling mode At H P failure stop compressor after 1 second After compressor delay 3 minutes the unite returns to normal operation If failure occurs 3 times in 15 minutes the system shut down Signal ERG appears flashing Heating mode The fan operates in LOW speed for 5 minutes and then change to desire speed If the fan operate in LOW or MEDUM speed and H P failure occurs the speed switch to HIGH When fan speed is HIGH and H P contact open for 1 second the compressor stop After compressors delay 3 minutes the unit re starts the compressor If failure occurs 3 times in 15 minutes the system shut down Signal ER6 appears flashing 11 2 Modes of operation and uses Setting the Temper
22. f 14 mm and 16 mm 23 mm in USA and Canada respectively Introduction of conduit or cable does not reduce clearances below 2 mm for basic supplementary insulation and 2 mm for functional insulation e Supply cord shall not be lighter than each of the following a lower number in the code designation of the cord in IEC 60227 or IEC 60245 indicates a lighter type a Ordinary tough rubber sheathed cord code designation 60245 IEC 53 b Light polyvinyl chloride sheathed cord code designation 60227 IEC 53 e Nominal cross sectional area for conductors of supply cord cable for fixed wiring shall be 2 5 6 mm e Supply cord shall not be in contact with sharp points or edges of the appliance e The supply cord shall have a green yellow core that is connected to the earthing terminal of the appliance and to the earth contact of the outlet e Conductors of supply cords shall not be consolidated by lead tin soldering where they are subjected to contact pressure unless the clamping means is constructed so that there 1s no risk of bad contact due to cold flow of the solder e Mounting the cord to part of the enclosure shall not damage the insulation of the supply cord e Chord anchorages shall be arranged so that they are only accessible with the aid of a tool or shall be constructed so that the cord can only be fitted with the aid of a tool e The insulated conductors of the supply cord shall be additionally insulated from accessible metal parts by
23. g Btu h Watt Heat Extraction Heating Btu h Cooling capacity WU O0 O1 co 4140 5226 7827 14133 26721 3211 5647 10963 19280 V PhiHz 230 1 50 230 150 Design data for cooling Air entering temperature 27 C db 19 C wb and water inlet temperature 29 C Design data for heating Air entering temperature 21 C and water inlet temperature 20 C Excluding electrical heating element Net static pressure available at fan discharge at nominal capacity Available also in 400 3 50 O RON Data applicable for R410A For additional information contact Unique ltd Product specifications are subject to change without notice Appearance of products may differ slightly from catalog 1 LINIGJUS Advanced air conditioning systems WS series 4 Dimensions and Weights Split Condenser Units Refrigerant Tubing Model Eid Connections Water Inlet Weight Liquid Small Suction Large 4 4 5 g 5 8 5 s n 3 71 13 15 95 K 3 4 wser rsoxea0xs60 wr 7 r Data applicable for R410A For additional information contact Unique ltd Product specifications are subject to change without notice Appearance of products may differ slightly from catalog ND LINIGJLIzS Advanced air conditioning systems WS series 5 Heating Element Recommendations Heating 1 Ph Units Model Element Current Fuse Kw Amp Amp 0 3 Ph Units Current Amp Amp 3x2 2 3x3 1
24. g group is switched ON at room temperature 2 C lower than the set temperature Second heating group is switched OFF at 1 C under set point Evaporator coil temperature control Compressor stops at coil temperature below 0 C Compressor restart enabled at coil temperature above 8 C Failure in evaporator coil temperature sensor does not stop unit operation Return air temperature sensor hermostats include an incorporated build in temperature sensing element However an external sensor optional can be added In such case the operation of the unit is governed by the selected sensor The thermostat temperature setting range is 16 C to 30 C Failure in return air sensor will cause the compressor to run continuously If unit was set to AUTO operation mode the compressor will not run Air Flow protection only for units with electrical heating elements To protect the heating elements from overheating or from operating without flowing air A combination of differential pressure flow switch for heating elements larger then 12KW and temperature sensor immediately cut off the heating elements in case the temperature or air flow reaches the pre set protection values The fan continues running for additional 15 Sec B UN LINIGJLIzS Advanced air conditioning systems WS series Low pressure protection Low pressure compressor protection At each compressor re start the system ignores L P entrance For 2 minutes Cooling mode At low pr
25. ions elbows and branches must be properly designed We highly recommend seeking for expert advice on this matter e Use flexible sleeve to connect the ducting to the air conditioner 7 8 Connecting the Temperature Sensor Bulbs e See Fig 7 4 for identification e The temperature sensor bulbs are factory pre assembled e Incase of replacement make sure that the new bulb is fitted into the locating tube with touch fit A A A S fiff N 7 LL ND b JAE i M YZ 74 ay Pun So I Fig 7 4 2 LINIGJUS Advanced air conditioning systems WS series 8 INSTALLING CONTROL SYSTEM and CONNECTING POWER 8 1 Installing the Thermostat Fig 8 1 To WS electrical box Fig 8 1 e Remove the thermostat from the packaging e Install the in room wall mounted thermostat e Separate the front panel from the back panel by depressing the tongue lock located in the back part of the unit e Push the back panel out e Gently disconnect the data cable from its quick connect wiring harness e ine the back panel up against the wall or against any other flat surface onto which it is to be mounted Drill holes and use appropriate fixing screws to fasten the panel to its location e Locate the terminal box See Fig 8 2 and Fig 8 3 e Complete the electrical connections according to the electrical wiring diagrams e Reconnect the data cable and close back the cover of the thermostat to its base 2
26. ive Action Refrigerant flow Refrigerant gas 1 Charge refrigerant gas failure shortage Recharge gas Excessive overcharging of refrigerant Repair leakage Gas leakage Replace strainer Clogging of strainer or capillary tube Replace 4 Way valve 4 Way valve is defective Replace solenoid Solenoid 4 Way valve is defective Compressor is defective 7 Replace compressor Air circulation Air filter is clogged Clean air filter failure Air shutters are closed Open air discharge shutters Heating elements Oneor two hating stages 8 Check electrical heating elements failure are not operating resistance b Check contactors c Check the elements time delay fuse Refrigerant low Lack of water flow Check water filter pressure Mer LINIGJUS Advanced air conditioning systems WS series 11 CONTROL PROGRAMS and OPERATION INSTRUCTIONS 11 1 General Protection The air conditioner is protected by pressure and temperature sensors The sensors cut off the unit once extreme and dangerous conditions are detected The DISPLAY on the thermostat indicates the failure code as stipulated in the troubleshooting section Restart after power failure Back up memory keeps the working data Once power returns the air conditioner will restart and return to its saved data The unit can be modified to fail safe manual restart after power failure Start Stop Instructions for such modification are
27. r supply was ON for at least 6 hours before starting the unit Note The appliance is suitable for indoor use only Warning Failure to comply with these instructions may cause malfunction of the unit Important In case where an electrical valve for entering or exiting cooling water is being used verify that valve is open before the compressor starts _17 LINIGJUS Advanced air conditioning systems WS series 7 3 Typical WS Installation Fig 7 1 Rubber Shock Absorbers 2 Strainer 3 PTFE or Rubber ring 4 Flexible hose 5 Cut Off Valves 6 Rubber Joints Siphon T Connection and Drain Hose 18 A a NC 2 Y ys 7 Control Unit 8 Electrical cable 9 Acoustic Insulation 10 Hanger Mounting Brackets 11 Hanger Anchors 12 Air Vent Plug LINIGJLIzS Advanced air conditioning systems WS series 7 4 Unit Location and Installation Install the unit in a location with convenient access to the service panels air filter and control box See Fig 7 2 for minimum permissible distances to adjacent structures Protect the unit from any heat source Make sure that the unit is level For all models hanging installation is commonly used Installing the unit resting on a rigid surface is allowed Carefully plan the drainage hose path at a minimum slope of 296 avoiding sharp bends or water traps
28. sconnected or faulty Check evaporator coil sensor ER3 evaporator coil sensor Replace sensor if faulty Evaporator coil sensor failure Unit continues running Short disconnected or faulty Check water temperature sensor ERA water temperature sensor Replace sensor if faulty Only for Heat Pump Water temperature sensor failure Unit continues running oe e UNIQU Advanced air conditioning systems WS series Failure Code Troubleshooting continued iB Display Possible Cause Corrective Action Gas pressure too low Gas pressure too high Only for units with electrical heating elements Heating elements protection ER8 Only for Heat Pump Water temperature too cold ER9 Return air sensor is short circuited or disconnected Clogged air filter Faulty fan capacitor Faulty fan motor Air discharge shutters are too closed Lack of refrigerant Condenser cooling water is too cold Clogged water strainer Condenser cooling water too warm No water circulation in heat exchanger No air supply at indoor side Indoor fan is not running Air shutters are closed Lack of water or low water flow Short disconnected or faulty return air temperature sensor 205 Clean filter Replace capacitor Replace fan motor Open air discharge shutters Check for leaks and add refrigerant Check cooling tower or the cooling water source for proper operation Clean
29. the return water to the WATER OUT connection Use adequate thread sealant and also the supplied sealing ring 3 e The supplied strainer 2 must be installed on the WATER IN connection See Fig 7 1 Install the strainer with the drain plug facing down in a location with convenient service access e Complete the water piping installation and open the two cut off valves 5 Allow water to flow in and out the unit e Carefully open the air vent plug 12 Release all air from the system and close the plug back e Inspect all connections for water leaks It is common practice to leave open the two cut off valves 5 throughout the rest of the installation and occasionally inspect the piping for leaks CCE CT 1H Flexible tube to water Double fitting Connector Cupper adaptor system 1 1 2 1 1 2 11 2 screwing 1 1 2 i Water out WS Unit 120 144 A HEN Water out WS Unit 12 102 Flexible tube to water Rubber seal Cupper adaptor system 3 4 1 1 1 4 3 4 1 1 1 4 screwing 3 4 1 1 1 4 Fig 7 3 20 LINIGJUS Advanced air conditioning systems WS series 7 6 Connecting the Drain Hose Connect the supplied rubber siphon 6 to the drain hose connection See Fig 7 1 for details The T connection breather not supplied and the drain hose not supplied immediately follow the siphon 7 7 Connecting the Ducting Work e To obtain optimal results duct cross sections connect
30. ure control CC Compressor contactor LP Low pressure control CH1 CH2 Heaters contactor ALFA 260U Room Thermostat TS1 TS2 Safety thermostat ALFA 123U Power switch unit MAIN POWER Cable cross Sesion cen 5 25 25 8 e 8 c dc cd c BUR LINIGJUS Advanced air conditioning systems WS series 9 4 Electrical Wiring Diagram 3 Phase with Electrical Heating Elements Model 260U CH CC1 CH1 CH2 CH3 L E LT T NV CH NC1 NV 230V 230V 230V omron omron omron LRST T e D M control 220V TB1 QM TB1 Q1 a le Im I IS le x m N 220V NO VOLT RELAY COMP 1 0 Pa A l N N al 5 eT rl MAIN POWER COMPRESSOR x xl 4 N N N HEATER 1 HEATER 2 HEATER 3 1 3kW 5 1 3k Ww 1 3k Ww control 220V PE ON ON ON POWER UNIT ALFA pl 123U AR ON DIP SWITCH1 2 3 OFF tw Fl F2 F3 C Hi He S DUT S IN S 1 2 3 Q O Q Q Q O Q O Q C Q Q Q C CCilai CHilay CH Ae Ae N 220V i ER 1 HEATER 2 HEATER 3 12 I N gt o f C T C D gt N2XY 3x1 5 pee y L L COMP HEAT CONTACTOR CONTACTOR CONTACTOR CONTACTOR THERMO SWITCH 1 TS1 75 3 C open y F P P Rd man 4 com d MTS CAPI CX THERMO SWITCH 2 I TSe EVAP RETURN HIGH PRESSURE LOW PRESSURE T COIL SENSOR AIR SENSOR EVAPORATOR FAN 603 C open 4616 C close aut HP High pressure control CC Compressor contactor LP Low pressure control CH1 C
31. y other purpose or in a way not within the operation recommendations specified in this manual will void the warranty and may cause injury This manual is designed to provide comprehensive installation operation information for this UNIQUE product The table of contents provides a convenient overview of the information in this manual the equipment Follow recommended practices and safe operating practices Keep Follow Safety Instructions Carefully read all safety messages in this manual and on Safety Signs in good condition Replace missing or damaged Safety Signs Danger In plannig the location of the equipment take into consideration any areas that could present an unsafe situation Avoid power lines that could come into contact with the equipment Warning Electrical Safety To avoid electrical shock place equipment in a safe area use guards around control panels and always shut off and lock out control boxes when working on equipment In selecting electrical equipment to be used with the installation you must use equipment conforming to applicable local or international codes or regulations Important Check all equipment for warning danger and Caution Decals before equipment is operated Do not by pass or take shortcuts with electrical safety equipment Make sure electrical equipment is properly installed and grounded by a qualified electrician and that it meets and adheres to all local laws and codes Be sure cov
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