Service Manual And Advanced air conditioning systems
Advanced air conditioning systems WS Series Contents SAFETY FIRST! ………………………………………………………………… 4 1. INTRODUCTION ……………………………………………………………….. 5 2. TECHNICAL DATA TABLES ……………...…………………………………. 8 3. WATER SOURCE CONSOLE UNITS ………………………………………... 11 4. SPLIT CONDENSER UNITS ..…………………………………………………. 12 5. HEATING ELEMENT RECOMMENDATIONS …………………………….. 13 6. REFRIGERATION CYCLE DIAGRAMS ……………………………………. 14 7. INSTALLATION INSTRUCTIONS …………………………………………... 16 8. INSTALLING THE CONTROL SYSTEM AND CONNECTING POWER...
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 any other purpose or in a way not within the operation recommendations specified in this manual will void the warranty and may cause injury.
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.
WS Series Advanced air conditioning systems 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.
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: MODEL Air-conditioner model name CLIMATE CLASS Class T1 – Standard conditions. VOLT/PHASE/Hz A/C power supply, for example: 400/3/50 = 400V/3 Phase/50 Hz. COS φ Power factor for the unit. FUSE Required fuse size, Amp.
WS Series Advanced air conditioning systems 2.1 Technical Data Table – WS Package Units H L W Model Cooling capacity Heating capacity (1) (1) Power (2) Consumption Operating (2) Current C.O.P WS-15 WS-22 WS-28 3795 4440 6419 8353 Btu/h 12950 15150 21900 28500 Watt 5833 6532 9754 10910 Btu/h 19902 22286 33279 37223 Cooling Watt 981 1139 1672 1993 Heating Watt 1144 1256 1840 2058 Cooling Amp. 6 6.5 9.1 10.7 Heating Amp. 6 6.4 8.9 10.9 Cooling 3.9 3.
WS Series Advanced air conditioning systems 2.1 Technical Data Table – WS Package Units (continued) H L W Model Cooling capacity Heating capacity (1) (1) Power (2) Consumption Operating (2) Current C.O.P WS-43 WS-48 WS-54 WS-61 10551 12749 14068 15826 17878 Btu/h 36000 43500 48000 54000 61000 Watt 14269 17087 18893 20720 23740 Btu/h 48686 58300 64463 70695 81000 Cooling Watt 2590 3129 3529 3857 4266 Heating Watt 2692 3224 3565 3985 4396 Cooling Amp 13.
WS Series Advanced air conditioning systems 2.1 Technical Data Table – WS Package Units (continued) H L L W WS-75 to WS-102 Model Cooling capacity Heating capacity (1) (1) Power (2) Consumption Operating (2) Current C.O.
WS Series Advanced air conditioning systems 3. Technical data table – WSC – Water Source Console H L W Model Cooling capacity Heating capacity (1) (1) Power (2) Consumption Operating (2) Current C.O.P WSC-15 WSC-22 WSC-28 3795 4440 6419 8353 Btu/h 12950 15150 21900 28500 Watt 5833 6532 9754 10910 Btu/h 19902 22286 33279 37223 Cooling Watt 981 1139 1672 1993 Heating Watt 1144 1256 1840 2058 Cooling Amp. 6 6.5 9.1 10.7 Heating Amp. 6 6.4 8.9 10.9 3.
WS Series Advanced air conditioning systems 4.
WS Series Advanced air conditioning systems 5. Heating Element Recommendations Model Heating Element Kw WS-12 1.5 WS-15 WS-22 1-Ph Units 3-Ph Units Current Amp. 6.8 Fuse Amp. 10 Current Amp. 3x2.2 Fuse Amp. 3x6 2 9.1 10 3x3.1 3x6 3 13.7 16 3x4.6 3x6 WS-28 4 18.2 20 3x6.1 3x10 WS-36 5 22.8 25 3x7.6 3x10 WS-43 6 27.3 32 3x9.1 3x16 WS-48 6 - - 3x9.1 3x16 WS-54 8 - - 3x12.2 3x16 WS-61 9 - - 3x13.7 3x16 WS-75 9 - - 3x13.
Advanced air conditioning systems 6.
Advanced air conditioning systems 6.
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.
Advanced air conditioning systems WS Series 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.
WS Series Advanced air conditioning systems 7.3 Typical WS Installation 5 11 12 3 2 10 3 6 8 9 4 1 7 Fig. 7-1 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 - 7. Control Unit. 8. Electrical cable. 9. Acoustic Insulation. 10. Hanger Mounting Brackets. 11. Hanger Anchors. 12. Air Vent Plug.
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.
WS Series Advanced air conditioning systems Connect the incoming water to the WATER IN connection and the return water to the WATER OUT connection. Use adequate thread sealant and also the supplied sealing ring (3). 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. Complete the water piping installation and open the two cut-off valves (5).
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 To obtain optimal results, duct cross sections, connections, elbows and branches must be properly designed. We highly recommend seeking for expert advice on this matter.
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 Remove the thermostat from the packaging. Install the in-room wall mounted thermostat: Separate the front panel from the back panel by depressing the tongue lock located in the back part of the unit. Push the back panel out. Gently disconnect the data cable from its quick connect wiring harness.
Advanced air conditioning systems 8.2 Terminal Box Location – Single Phase Unit N GR ONLY FOR UNITS WITH ELECTRICAL HEATING ELEMENTS Fig.
Advanced air conditioning systems 8.3 Terminal Box Location – 3 Phase Unit ONLY FOR UNITS WITH ELECTRICAL HEATING ELEMENTS Fig.
WS Series Advanced air conditioning systems 9. Electrical Wiring Diagrams 9.1 Electrical Wiring Diagram – Single Phase Cooling Only – Model 260U HP – High pressure control LP – Low pressure control CC – Compressor contactor WS Type 12 15 22 MAIN POWER Cable 2.5 2.5 2.
WS Series Advanced air conditioning systems 9.2 Electrical Wiring Diagram – 3 Phase Cooling Only – Model 260U HP – High pressure control LP – Low pressure control CC – Compressor contactor ALFA 123U – Power switch unit ALFA 260U – Room Thermostat WS Type 12 15 22 28 36 43 48 54 61 MAIN POWER Cable 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.
WS Series Advanced air conditioning systems 9.3 Electrical Wiring Diagram – Single Phase with Electrical Heating Elements – Model 260U HP – High pressure control LP – Low pressure control ALFA 260U – Room Thermostat ALFA 123U – Power switch unit WS Type 12 15 22 MAIN POWER Cable 2.5 2.5 2.
WS Series Advanced air conditioning systems 9.4 Electrical Wiring Diagram – 3 Phase with Electrical Heating Elements – Model 260U HP – High pressure control LP – Low pressure control ALFA 260U – Room Thermostat ALFA 123U – Power switch unit CC – Compressor contactor CH1, CH2 – Heaters contactor TS1, TS2 – Safety thermostat WS Type 12 15 22 28 36 43 48 54 61 MAIN POWER Cable 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.
WS Series Advanced air conditioning systems 9.5 Electrical Wiring Diagram – Single Phase with Heat Pump – Model 260U HP – High pressure control LP – Low pressure control ALFA 260U – Room Thermostat WS Type 12 15 22 MAIN POWER Cable 2.5 2.5 2.
WS Series Advanced air conditioning systems 9.6 Electrical Wiring Diagram – 3 Phase With Heat Pump – Model 260U HP – High pressure control LP – Low pressure control ALFA 260U – Room Thermostat ALFA 123U – Power switch unit CC – Compressor contactor RV1 – 4 way valve WS Type 12 15 22 28 36 43 48 54 61 MAIN POWER Cable 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.
WS Series Advanced air conditioning systems 10. TROUBLESHOOTING GUIDE 10.1 Troubleshooting Notes. Important! Reset: 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. Note: Check for broken wires and loose cable lugs first! Warning: Always unplug the A/C before performing cleaning or maintenance activities. 10.2 Failure Code Troubleshooting.
WS Series Advanced air conditioning systems Failure Code Troubleshooting (continued). Display 4 Possible Cause Corrective Action 1. Clogged air filter 1. Clean filter. 2. Faulty fan capacitor. 2. Replace capacitor. 3. Faulty fan motor. 3. Replace fan motor. 4. Air discharge shutters are too closed. 4. Open air discharge shutters. 5. Lack of refrigerant. 5. Check for leaks and add refrigerant. ER5 Gas pressure too low 6. Condenser cooling water is too cold. 5 1. Clogged water strainer. 1.
WS Series Advanced air conditioning systems 10.3 General Troubleshooting. Symptom 1 2 3 4 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 Probable Cause Corrective Action 1. Power supply to unit not connected (display is blank). 1. Check for proper connection of power plugs in wall socket.
WS Series Advanced air conditioning systems General Troubleshooting (continued). Symptom 5 Low Capacity. 6 Water accumulates and overflows from evaporator drain pan. 7 Indoor fan is not running at all. 8 Compressor motor is not running at all Probable Cause Corrective Action 1. Lack of refrigerant causes ice formation on the evaporator coil (in Cool mode). 1. Unit must be charged (according to the nameplate) after localizing the gas leak. 2. Clogged air filters. 2. Clean filters.
WS Series Advanced air conditioning systems 10.4 Poor Cooling Troubleshooting. Symptom 1 2 3 Refrigerant flow failure Air circulation failure. Freezing Conditions at Evaporator Coil Probable Cause Corrective Action 1. Refrigerant gas shortage. 1. Charge refrigerant gas. 2. Excessive overcharging of refrigerant. 2. Recharge gas. 3. Gas leakage. 3. Repair leakage. 4. Clogging of strainer or capillary tube. 4. Replace strainer. 5. 4-Way valve is defective. 5. Replace 4-Way valve. 6.
WS Series Advanced air conditioning systems 10.5 Poor Heating Troubleshooting (Heat Pump). Symptom 1 Refrigerant flow failure Probable Cause 1. Refrigerant gas shortage. Corrective Action 1. Charge refrigerant gas. 2. Recharge gas. 2. Excessive overcharging of refrigerant. 3. Repair leakage. 3. Gas leakage. 4. Replace strainer. 4. Clogging of strainer or capillary tube. 5. Replace 4-Way valve. 5. 4-Way valve is defective. 6. Replace solenoid. 6. Solenoid 4-Way valve is defective. 7.
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.
Advanced air conditioning systems WS Series 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 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. Low pressure protection: Low pressure compressor protection.
Advanced air conditioning systems WS Series 11.3 Wall Mounted Thermostats α 260U 1. Temp Temperature setting pushbuttons: (+) to increase and (-) decrease the temperature setting. Simultaneous pressing of both (+) and (-) buttons will display the actual room temperature. 2. Fan Fan speed select pushbutton. Available speeds are Slow, Medium, High and Auto. 3. Mode Selection pushbutton for mode of operation. Available modes are Cooling, Heating, Auto and Fan. 4.
Advanced air conditioning systems WS Series NOTES ……………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………… ………………………………………………………………………………………………………………………
Unique – Engineering & 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.
