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INSTALLATION MANUAL
AIR
CONDITIONER
Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
Please retain this installation manual for future reference after reading it
thoroughly.
Air-to-Water Heat Pump
P/NO : MFL69676201
www.lg.com
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Table of Contents
Related Manuals for LG THERMAV AHNW16606B0
Summary of Contents for LG THERMAV AHNW16606B0
- Page 1 Please read this installation manual completely before installing the product. Installation work must be performed in accordance with the national wiring standards by authorized personnel only. Please retain this installation manual for future reference after reading it thoroughly. Air-to-Water Heat Pump www.lg.com P/NO : MFL69676201...
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Page 2: Table Of Contents
Air-to-Water Heat Pump Installation Manual TABLE OF CONTENTS IMPORTANT INFORMATION....................3 SYMBOLS.............................3 GENERAL .............................3 SAFETY WARNINGS AND INSTRUCTIONS ................4 OBLIGATIONS OF THE MANUFACTURER .................7 OBLIGATIONS OF THE INSTALLER DURING INSTALLATION ..........7 OBLIGATIONS OF THE USER .....................7 INSTALLATION PART ......................8 GENERAL INFORMATION ....................9 MODEL INFORMATION........................9 PARTS AND DIMENSIONS ......................10 INSTALLATION OF OUTDOOR UNIT ................12... -
Page 3: Important Information
Important information Important information The manual describes the process of installation and maintenance of the device. The installation and maintenance can only be performed by qualified personnel. Read the manual carefully before the in- stallation, this way you will be informed about the intended use, functionality and process of handling the device. -
Page 4: General
Important information General • Read Owner’s manual and Installation manual before installation. • Any remaking or replacement of original components of the device voids the manufacturer’s guarantee for safe and functional operation. The manufacturer is not responsible for the conse- quences and will not acknowledge claims for damages in these cases of undesignated and incor- rect use of the device. - Page 5 Important information • Electrical installations have to be inspected in accordance with regulations on the requirements for low voltage electrical installations in buildings by a qualified installer. • Connecting the devices power cable must be performed by a qualified electrician. The device must not be live during the procedure.
- Page 6 Important information immediately after operation. • If you touch the pipe or internal parts, you should be wear protection or wait time to return to nor- mal temperature. • Turn the main power on 6 hours ago before the product starting operation. •...
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Page 7: Obligations Of The Manufacturer
Important information Obligations of the manufacturer The manufacturer guarantees that the device is in accordance with current European directives and standards. The device is marked with the mark CE and it has all the necessary documentation. We reserve the right to make changes to the manual without prior notice. As manufacturer we do not take responsibility for the consequences arising from: •... -
Page 8: Installation Part
Installation Part Installation Part Thank you for choosing LG Electronics Air-to-Water Heat Pump Before starting installation, please make it sure that all parts are found inside the product box. INDOOR UNIT BOX Item Image Quantity Indoor unit INSTALLATION MANUAL CONDITIONER Installation Manual Please read this installation manual completely before installing the product. -
Page 9: General Information
General Information General Information With advanced inverter technology, is suitable for applications like under floor heating, under floor cooling, and hot water generation. By Interfacing to various accessories user can cus- tomize the range of the application. In this chapter, general information of is presented to identify the installation proce- dure. -
Page 10: Parts And Dimensions
General Information Parts and Dimensions Indoor unit Heating/Cooling Inlet Buffer tank Heating/Cooling Outlet Circulating pump Warm sanitary water Electric flow heater DHW - circulation TT3000 Controller Cold sanitary water - supply Condenser Gas pipe 5/8‘‘– refrigerant 3 Way Valve Liquid pipe 3/8‘‘– refrigerant DHW tank Mg. - Page 11 General Information Outdoor unit(External) Product Heating Capacity : 14kW U3 Chassis (unit:mm) Supporter Description Name Liquid-side Service Valve Gas-side Service Valve Air discharge Grill Installation Manual 11...
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Page 12: Installation Of Outdoor Unit
Installation of Outdoor Unit Installation of Outdoor Unit The outdoor unit of is installed outside to exchange heat with ambient air. Therefore, it is important to secure proper space around the outdoor unit and care for specific external conditions. This chapter presents a guide to install the outdoor unit, make a route to connect with the indoor, and what to do when installed around seaside. -
Page 13: Set Up And Connection Of The External Sensor
Installation of Outdoor Unit Set up and connection of the external sensor For controlling the heating according to the external temperature, it is necessary to install the exter- nal temperature sensor. The sensor must be set up in a shady spot. The sensor must not be set up above a window or door. -
Page 14: Installation At Seaside
Installation of Outdoor Unit Installation at Seaside CAUTION 1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced. 2. Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the product. -
Page 15: Installation Of Indoor Unit
Installation of Indoor Unit Installation of Indoor Unit General The device is installed according to capacity Heating/Cooling Inlet DHW – outlet Heating/Cooling Outlet DHW – circulation Electrical and communication connection DHW – inlet Connection to outdoor unit Gas pipe 5/8‘‘– refrigerant Connection to outdoor unit Liquid pipe 3/8‘‘–... -
Page 16: Location Of The Device
Installation of Indoor Unit Location of the device • It is obligatory to consider the minimal clearance from obstacles for ensuring unobstructed access for maintenance and service. • The location of the device has to be accessible with manual transport devices to ensure undis- turbed delivery of replacement parts and equipment for maintenance and servicing. - Page 17 Installation of Indoor Unit Minimal clearances of the external device from walls for seamless operation, maintenance and serv- icing. (unit:mm) The unit should be installed straightly upward. Installation Manual 17...
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Page 18: Connection With The Outdoor Unit
Installation of Indoor Unit Front panel removal Front panel removal First unscrew 2 screws of panel (A). Open the panel (A) towards yourself and pull up- ward. After this repeat the procedure for each panel.(B,C) Connection with the outdoor unit The connection between the indoor and outdoor unit is performed via refrigerant pipes and communi- cation line. - Page 19 Installation of Indoor Unit P16 Fill with waterproof polyurethane foam P20 Ribbed protective pipe min. ɸ 75 The ribbed protective pipe for the power Protective pipe for external sensors or cable depends on the dimension of the sup- communication cables ply cable Copper pipe Cu –...
- Page 20 Installation of Indoor Unit 1 Copper pipe 2 Copper pipe held downward 3 Beveler STEP 3: Inserting the screw nut • Remove the screw nut from the exterior unit. • Insert the screw nut into the pipe which has been cleaned. 1 Copper pipe 2 Screw nut STEP 4: Edging...
- Page 21 Installation of Indoor Unit STEP 5: Testing • Compare the edging of the pipe with the picture below. • In the case of damaged edging, cut the part off and repeat the edging procedure. 1 Circular edging of the pipe of the 4 Inclined edge same length.
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Page 22: Hydraulic Connection
Installation of Indoor Unit Hydraulic connection The dimensioning of circulation pumps, valves, safety elements and pipes has to be performed by the design engineer according to the heating/cooling capacity of the device. Before connecting the device, it is necessary to rinse the pipe system thoroughly and remove impuri- ties (solid particles, oils, greases ...). - Page 23 Installation of Indoor Unit Ball valve Pressure reducing valve Check valve Safety valve Expansion vessel Charging pipe Circulation pump Cold sanitary water Cold circulation water Warm sanitary water Adjusting the safety valve [bar] System pressure [bar] Volume of the DHW [L] Expansion vessel [L]* Setting the pressure for the expansion vessel for DHW Expansion vessel for DHW is factory filled to a precharge pressure p0 with dry nitrogen.
- Page 24 Installation of Indoor Unit Heating system For unobstructed and safe operation, it is important to have a heat accumulator with a minimal vol- ume of 40 l (integrated in the IDU). The accumulator is needed for hydraulic balancing, ensuring un- obstructed flow and defrosting.
- Page 25 Installation of Indoor Unit The heating system piping diagram Below you can find an example of the basic hydraulic scheme of the heating system. For other cir- cuits see The Hydraulic Circuit Diagram Catalogue. Scheme of the heating system in hydro modules with an integrated boiler The elements on the scheme are marked in the following manner: Legend of reading: Mark of the element...
- Page 26 Installation of Indoor Unit CONNECTING ELEMENTS MARK CHARACTERISTICS TERMINALS Return for heating Supply pipe for heating Processing unit Pipe safety thermostat KT-1 Spatial corrector KT-1 (can be used in all heating cycles) KT-2 Spatial corrector KT-2 (can be used in all heating cycles) Spatial Connector on PLC Q1-Q12...
- Page 27 Installation of Indoor Unit Charging of the heating system Thorough venting of the system has to be ensured. Otherwise, malfunctions in operation may occur. An expansion vessel of suitable dimensions must be fitted to the heating system. The expansion vessel must be dimensioned in accordance with standard EN 12828. For normal operation of the expansion vessel, it is necessary to perform proper adjustments of the vessel’s working pressure.
- Page 28 Installation of Indoor Unit Setting the pressure for the expansion vessel • Before filling the system with water, check and set the pressure P . The expansion vessel is factory set to the pressure specified on its data label. For correct operation of the system, set the pressure according to the equation below.
- Page 29 Installation of Indoor Unit Preparing the heating system Prepare the system according to one of the recommended hydraulic piping diagrams which is speci- fied by the manufacturer of the device. This is the only way to ensure reliable and effective operation of the device.
- Page 30 Installation of Indoor Unit In case of damage of the hydraulic components of the system, despite considering the listed guide- lines for permitted substance content in the heated water, we recommend installing an additional SpiroVent RV2 air (micro-bubble) venting system. The presence of micro bubbles in the system eventually forms larger bubbles which in time can cause corrosion of the system, system compo- nent malfunction and operation disturbance.
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Page 31: Electrical Connection
Installation of Indoor Unit Electrical connection Connect the indoor unit to the mains according to the instructions described in this chapter. • The final electrical connection can only be performed by the person authorized by the manufac- turer to ensure the correct and efficient operation of the device. IT IS STRICTLY PROHIBITED FOR UNAUTHORIZED PERSONS TO TAMPER WITH THE ELECTRICAL CONNECTION OF THE DEVICE. - Page 32 Installation of Indoor Unit Description of electrical connection board Input/output module MD1 Communication with outdoor unit (PI485) Power supply ~ 230 V / 12 V Connecting clips spatial corrector KT-1(2) RESET button (Thermal protection of the Place of grounding the plated (braided) electrical heater).
- Page 33 Installation of Indoor Unit Display - process module WM - connection with the WEB module Process module PLC (factory made). TE2 - connection with the input/output RQ2 - connection for resetting the alarm module (factory made). (factory made). TS - connection of the spatial corrector RQ1 - connection of the signal for reporting KT-1(2) (factory made) an alarm (optional).
- Page 34 Installation of Indoor Unit Proper functioning requires a connection between the terminal clip X5 on the internal unit and con- necting clips Bus_A [+] / Bus_B [-] / GND on the Gateway PI485 module (Modbus Converter) on the external device. ELEMENTS CONNECTING CHARACTERISTICS...
- Page 35 Installation of Indoor Unit Installation Manual 35...
- Page 36 Installation of Indoor Unit Connecting the internal control unit – TT3000 Connecting the device to the power source can only be performed by a qualified installer in a volt- age-free state! As part of connecting the internal control unit to the connecting clips X1…X7, connect the following cables: •...
- Page 37 Installation of Indoor Unit TW TX Ethernet Installation Manual 37...
- Page 38 Installation of Indoor Unit Make sure that all the cables are fed through the cable glands at the top of the unit. In order to ensure water tightness of the cable routing follow the below instructions: 1. Make a small hole in the thin rubber membrane for each cable. 2.
- Page 39 Installation of Indoor Unit Connection of power cable Connecting the device to the power source can only be performed by a qualified installer in a volt- age-free state! • The supply and communication cables have to be laid into the device and electrical cabinet through separate envisioned ducts and overflows which are installed before the cable clamp.
- Page 40 Installation of Indoor Unit In case of 1~230V; 50 Hz connection it is not allowed to connect a secondary bridge between L2 to L3 or L1 to L3 in order to have 3x2kW electrical heating capacity. Failure to comply may cause in- ternal overheating and fire hazard.
- Page 41 Installation of Indoor Unit Indoor unit Outdoor unit (PI485) Installation Manual 41...
- Page 42 Installation of Indoor Unit Electrical scheme 42 Air-to-Water Heat Pump...
- Page 43 Installation of Indoor Unit ELEMENT TERMINAL BLOCK DESCRIPTION L1, L2, L3, N, PE Power cable A5, GND Temperature sensor for external temperature Q11, N Cooling valve Q12, N, PE Additional external source Q7, N, PE Circulation pump of heating cycle 1 (optional) Q8, N, PE Circulation pump of heating cycle 2 (optional) N, Q9+, Q10-...
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Page 44: Connection Of The Spatial Corrector Kt-1 And Kt-2 (Accessories)
Installation of Indoor Unit Connection of the spatial corrector KT-1 and KT-2 (Accessories) Spatial corrector KT-1(2) is connected according to the circuit diagram below. It is necessary to en- sure the correct connection of the shielded cable to terminal blocks X6. ELEMENTS TERMINAL BLOCK MARK... - Page 45 Installation of Indoor Unit Pump capacity AHNW16606B0 Pump model : Yonos PARA RS 25/7.0 PWM1 Ku Selecting a water flowrate outside the curves can cause damage to or malfunction of the unit. Installation Manual 45...
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Page 46: Refrigerant Piping
Piping and Wiring for Outdoor Unit Procedures about refrigerant piping and electric wiring at the outdoor are described in this chapter. Most of procedures are similar to those of LG Air Conditioner. Refrigerant Piping Before starting refrigerant piping, constraints in pipe length and elevation should be examined. After resolv- ing all constraints, some preparations are required to proceed. - Page 47 Piping and Wiring for Outdoor Unit Preparation for Piping Preparation for piping is five steps. As main cause of refrigerant leakage is defects in flaring work, please carry out correct flaring work in the following steps. Step 1. Cut the pipes and the cable. •...
- Page 48 Piping and Wiring for Outdoor Unit Connecting Pipe to Indoor Unit Connecting pipe to the indoor unit is two steps. Read following directions carefully. Step 1. Pre-tightening. • Align the center of the pipes and sufficiently tighten the flare nut by hand. Indoor unit tubing Flare nut Pipings...
- Page 49 Piping and Wiring for Outdoor Unit Step 2. Tightening • Align the center of the pipes and sufficiently tighten the flare nut by hand. Continuous • Tighten the flare nut with a wrench until the wrench clicks • Tightening torque is as following. Outside diameter Torque inch...
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Page 50: Electrical Wiring
Piping and Wiring for Outdoor Unit Electrical Wiring Two kind of cables should be connected to the outdoor unit : One is ‘Power cable’, the other one is ‘Connecting cable’. Power cable is a cable which is used to supply external electricity to the outdoor unit. This cable is gen- erally connected between external power source (such as main electric power distribution panel of user’s house) and the outdoor unit. - Page 51 Piping and Wiring for Outdoor Unit Circuit Breaker Specification • Select a power source that is capable of supplying the current required by the AWHP. • Use a recognized circuit breaker between the power source and the unit. A disconnection device to adequately disconnect all supply lines must be fitted. •...
- Page 52 Piping and Wiring for Outdoor Unit After checking and confirming following conditions, start wiring work. 1. Secure dedicated power source for the Air-to-Water heat pump. The wiring diagram is present- ing related information. 2. Provide a circuit breaker switch between power source and the outdoor unit. 3.
- Page 53 Piping and Wiring for Outdoor Unit Connecting of the communication cable on the Outdoor Unit The communication cable is intended for communication between the external Gateway PI485(Modbus Converter) and the internal input/output module. Gateway PI485(Modbus Converter) is supplied by accessory. After you assemble Gateway PI485(Modbus Converter) on the C/box(Outdoor Unit), Connect Cables.
- Page 54 Piping and Wiring for Outdoor Unit < Diagram for Connecting Power cable & Communication cable > ❈ Field install PI485 (Modus Converter) Not in use GND (3) BUS-A (1) BUS-B (2) Communication cable 1(L) 2(N) 1(L) 2(N) Power cable Fuse Switch Power cable Outdoor Power...
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Page 55: Finalizing
Piping and Wiring for Outdoor Unit Finalizing After pipes are connected and electric cables are wired, pipe forming and some tests are remained. Especially, careful attention is required while proceeding leakage test because the leakage of the refrigerant effects degrade of performance directly. -
Page 56: Leakage Test And Evacuation
Piping and Wiring for Outdoor Unit Leakage test and Evacuation Air and moisture remaining in the refrigerant system have undesirable effects as indicated below. 1. Pressure in the system rises. 2. Operating current rises. 3. Cooling(or heating) efficiency drops. 4. Moisture in the refrigerant circuit may freeze and block capillary tubing. 5. - Page 57 Piping and Wiring for Outdoor Unit Evacuation 1. Connect the charge hose end described in the pre- Indoor unit ceding steps to the vacuum pump to evacuate the tubing and indoor unit. Confirm the "Lo and Hi" knob of the manifold valve Outdoor unit is open.
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Page 58: System Set-Up
System Set-Up System Set-Up To communicate with IDU & ODU, Installer has to set up dip switch. If not configured correctly, Improper operation can be expected. DIP Switch Setting Turn off electric power supply before setting DIP switch • Whenever adjusting DIP switch, turn off electric power supply to avoid electric shock. •... -
Page 59: Check Points, Maintenance And Troubleshooting
• There should be no apparently damaged parts inside the indoor unit. Parts inspection • Refrigerant leakage degrades the performance. If leakage found, contact qualified LG air conditioning installation person. Product Installation Refrigerant leakage • While cooling operation, condensed dew can drop down to the bot- tom of the indoor unit. -
Page 60: Care And Maintenance
Check Points, Maintenance and Troubleshooting Care and Maintenance The device must be visually inspected once a year. The electrical and hardware installation of the device have to be inspected. In the case of detected irregularities, contact the authorized technician. The servicing and maintenance of the device can only be performed by a person authorized by the manufacturer. - Page 61 Check Points, Maintenance and Troubleshooting Disturbances in the operation In case of a malfunction during the operation of the device the display of the internal unit displays “Caution, malfunction”. Find the malfunction in the manual. For error correction, call the installer who performed the installa- tion of the device.
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Page 62: Test Run
Check Points, Maintenance and Troubleshooting Test Run After professional installation, the authorized contractor has to perform the commissioning of the device. The commission can only be performed by a person authorized by the manufacturer! If the com- mission is performed by an unauthorized person, the warranty is not recognized. Management of the device must be performed in accordance with current instructions for use. - Page 63 [Representative] LG Electronics Inc. EU Representative Krijgsman 1, 1186 DM Amstelveen, The Netherlands [Manufacturer] LG Electronics Inc. EU Representative Krijgsman 1, 1186 DM Amstelveen, The Netherlands...