LG THERMA V Installation Manual
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LG THERMA V Installation Manual

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1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 1
INSTALLATION MANUAL
AIR-TO-WATER
HEAT PUMP
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.
Original instruction
[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared
Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands
[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu,
Changwon-si, Gyeongsangnam-do, KOREA
For more information, Refer to the CD or LG Web site (www.lg.com).
P/NO : MFL68681810
www.lg.com

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  • Page 1 [Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands [Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA For more information, Refer to the CD or LG Web site (www.lg.com). www.lg.com P/NO : MFL68681810...

  • Page 2: Table Of Contents

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 2 Air-to-Water Heat Pump Installation Manual TABLE OF CONTENTS PREFACE..........................5 1. SAFETY PRECAUTION....................6 WARNING .............................6 INSTALLATION WARNING .....................6 OPERATION WARNING ......................7 CAUTION ............................9 INSTALLATION CAUTION ......................9 OPERATION CAUTION ......................9 2. INSTALLATION PART ....................10 INDOOR UNIT BOX ........................10 OUTDOOR UNIT BOX ........................10 3.
  • Page 3 GENERAL CONSIDERATION....................50 TERMINAL BLOCK INFORMATION ..................51 CONNECTING WITH OUTDOOR UNIT ................52 ELECTRIC HEATER WIRING ....................52 8. ACCESSORIES INSTALLATION...................53 ACCESSORIES SUPPORTED BY LG Electronics ...............53 ACCESSORIES SUPPORTED BY 3rd PARTY COMPANIES ..........53 BEFORE INSTALLATION ......................54 THERMOSTAT ..........................54 GENERAL INFORMATION ....................54 HOW TO WIRE THERMOSTAT ....................55 FINAL CHECK........................56...
  • Page 4 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 4 HOW TO INSTALL DHW TANK.....................58 HOW TO INSTALL DHW TANK KIT ..................59 HOW TO WIRE DHW TANK HEATER ..................61 HOW TO INSTALL SOLAR THERMAL KIT................62 DRY CONTACT...........................62 REMOTE TEMPERATURE SENSOR..................62 3WAY VALVE ..........................63 HOW TO WIRE 3WAY VALVE....................63 FINAL CHECK........................63 2WAY VALVE ..........................64...

  • Page 5: Preface

    Chapter 10 • Troubleshooting, maintenance, and error code list are presented to correct problems. REMARK : ALL CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. TO GET THE LATEST INFORMATION, PLEASE VISIT LG ELECTRONICS WEB SITE. Installation Manual 5...

  • Page 6: Safety Precaution

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 6 Safety Precautions 1. Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

  • Page 7: Operation Warning

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 7 Safety Precautions • Do not install the unit on a defective installation stand. - It may cause injury, accident, or damage to the unit. • Be sure the installation area does not deteriorate with age. - If the base collapses, the unit could fall with it, causing property damage, unit failure, and personal injury.
  • Page 8 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 8 Safety Precautions • Do not touch refrigerant pipe and water pipe or any internal parts while the unit is operating or immediately after operation. - There is risk of burns or frostbite, personal injury. •...

  • Page 9: Caution

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 9 Safety Precautions CAUTION Installation • Always check for gas (refrigerant) leakage after installation or repair of unit. - Low refrigerant levels may cause failure of unit. • Keep level even when installing the unit. - To avoid vibration or water leakage.

  • Page 10: Installation Part

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 10 Installation Part 2. 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...

  • Page 11: General Information

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 11 General Information 3. 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 customize the range of the application. In this chapter, general information of is presented to identify the installation procedure.
  • Page 12 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 12 General Information Model name and related information Model Name Capacity Built-In Electric Power Source Power Source Heater(kW) (Electric Heater) (Unit) Outdoor Unit Indoor Unit Heating(kW) Cooling(kW) AHUW056A3 AHUW076A3 AHUW096A3 AHNW16606A3 6(3+3) 220-240 V ~ 50 Hz 220-240 V ~ 50 Hz AHUW126A3 12.0...

  • Page 13: Typical Installation Example

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 13 General Information Typical Installation Example CAUTION is installed with pre-existing boiler, the boiler and should not be operated together. If entering water temperature of is above 55°C, the system will stop operation to prevent mechanical damage of the product. For detailed electric wiring and water piping, please contact authorized installer.

  • Page 14: Case 2

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 14 General Information CASE 2: Connecting DHW Tank Outdoor Indoor Outdoor Unit Indoor Unit Hot water Fan coil unit Floor heating loop Radiator tank City water Note: • DHW tank - It should be equipped with internal electric heater to generate sufficient heat energy in very cold season.

  • Page 15: Case 3

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 15 General Information CASE 3: Connecting Solar thermal system Outdoor Indoor Outdoor Unit Indoor Unit Solar heat source Hot water Fan coil unit Floor heating loop Radiator tank City water Note: • DHW tank - It should be equipped with internal electric heater to generate sufficient heat energy in very cold season.

  • Page 16: Cycle Diagram

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 16 General Information Cycle Diagram LIQUID SIDE Service Indoor Unit Valve Plate Heat (3 way) Exchanger Water. Out Outdoor Unit Heat Exchanger Water. In Pressure 4 way Sensor Valve GAS SIDE Service (Accessories) Valve (3 way) Accumulator...

  • Page 17: Water Cycle

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 17 General Information Water cycle Installation Manual 17...
  • Page 18 : Solar panel, Sensors, Thermostats, party accessory and Field installation SOLAR THER- Interim heat exchanger, Water pump, etc. (no connector) (sold separately) MAL SYSTEM - To utilized hot water heated by SOLAR THERMAL SYSTEM, end-user must by LG AWHP Solar-Kit. 18 Air-to-Water Heat Pump...

  • Page 19: Parts And Dimensions

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 19 General Information Parts and Dimensions Indoor unit(External) (unit: mm) Description Name Remark Control Panel Built-in Remote Controller Installation Manual 19...

  • Page 20: Indoor Unit(Internal)

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 20 General Information Indoor unit(Internal) 289.6 84.5 76 41 (unit:mm) 20 Air-to-Water Heat Pump...
  • Page 21 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 21 General Information Description Name Remark Leaving Water Pipe Male PT 1 inch Entering Water Pipe Male PT 1 inch Refrigerant Pipe Ø9.52mm Refrigerant Pipe Ø15.88mm Water Pump Max Head 9.5 / 7 / 6 m Safety Valve Open at water pressure 3 bar Control Box...

  • Page 22: Outdoor Unit(External)

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 22 General Information Outdoor unit(External) Product Heating Capacity : 12kW,14kW,16kW U3 Chassis (unit:mm) Supporter Description Name Liquid-side Service Valve Gas-side Service Valve Air discharge Grill 22 Air-to-Water Heat Pump...
  • Page 23 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 23 General Information Product Heating Capacity : 5kW,7kW,9kW U4 Chassis (unit:mm) Supporter Description Name Liquid-side Service Valve Gas-side Service Valve Air discharge Grill Installation Manual 23...

  • Page 24: Control Parts

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 24 General Information Control Parts Control Box : Indoor Unit 1Ø Electric Heater Model 3Ø Electric Heater Model Description Name Remark Terminal blocks The terminal blocks allow easy connection of field wiring Unit ELB The ELB protects the unit against overload or short circuit Water tank heater The ELB protects the water tank heater in sanitary water tank...

  • Page 25: Control Panel

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 25 General Information Control Panel Operation display window Back button On/Off Button OK Button Up/Down/Left/Right Button Operation display window Operation and Settings status display When you move to the previous stage from the menu’s Back button setting stage Up/down/left/right button...

  • Page 26: Wiring Diagram : Indoor And Outdoor (Incl. Field Wiring)

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 26 General Information Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring) (Indoor : Electric Heater 1Ø, Outdoor : 1Ø) 26 Air-to-Water Heat Pump...
  • Page 27 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 27 General Information Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring) (Indoor : Electric Heater 3Ø, Outdoor : 3Ø) Installation Manual 27...

  • Page 28: Installation Of Outdoor Unit

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 28 Installation of Outdoor Unit 4. 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 29: Installation At Seaside

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 29 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 30: Installation Of Indoor Unit

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 30 Installation of Indoor Unit 5. Installation of Indoor Unit The indoor unit of is installed inside where terminal of under floor water pipe cycle and refrigerant pipe from the outdoor unit are accessible at the same time. In this chapter conditions for installation place is described.

  • Page 31: Mounting To Wall

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 31 Installation of Indoor Unit Mounting to Wall Step 1. Disconnect the remote control case from the front panel and disconnect the remote control cable. CAUTION After installation is completed, return the remote control to its original state. Use a flat-blade screwdriver or a coin to remove the remote control case.

  • Page 32: Water Volume And Water Pump Capacity

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 32 Installation of Indoor Unit Self drilling screw can be used as alternatives of M8 ~ M11 anchor bolts. But M8 ~ M11 anchor bolts are more preferred. Step 5. Hang the indoor unit at the supporting plate. Water volume and pump capacity The water pump is BLDC, so it may be required to change default water pump speed in case of noise by water flow.
  • Page 33 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 33 Installation of Indoor Unit AHNW16606A3, AHNW16809A3 Pump model : PY-122NDDD3 Performance test based on standard ISO 9906 with pre-pressure 2.0bar and liquid temperature 20°C. WARNING Selecting a water flowrate outside the curves can cause damage to or malfunction of the unit. Installation Manual 33...

  • Page 34: Pressure Drop

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 34 Installation of Indoor Unit Pressure Drop When installing the product, install additional pump in consideration of the pressure loss and pump performance. If flow-rate is low, overloading of product can occur. Product pressure Rated flow-rate Pump Head [m] drop [m]...

  • Page 35: Water Volume And Expansion Vessel Pressure

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 35 Installation of Indoor Unit Water Volume and Expansion Vessel Pressure Inside expansion vessel is included which is 8 liter capacity with 1 bar pre-pressure. That means, according to the volume-pressure graph, total water volume of 230 liter is supported as default.

  • Page 36: Water Quality

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 36 Installation of Indoor Unit Water Quality Water quality should be complied with EN 98/83 EC Directives. Requirement for resolved chemical ingredients is following table. Detailed water quality condition can be found in EN 98/83 EC Directives.

  • Page 37: Piping And Wiring For Outdoor Unit

    6. 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 resolving all constraints, some preparations are required to proceed.

  • Page 38: Preparation For Piping

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 38 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.

  • Page 39: Connecting Pipe To Indoor Unit

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 39 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.
  • Page 40 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 40 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 •...
  • Page 41 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 41 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 generally connected between external power source (such as main electric power distribution panel of user’s house) and the outdoor unit.

  • Page 42: Circuit Breaker Specification

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 42 Piping and Wiring for Outdoor Unit Point for attention regarding quality of the public electric power supply This equipment complies with respectively: - EN/IEC 61000-3-12 (1) provided that the short-circuit power Ssc is greater than or equal to the minimum Ssc value at the interface point between the user's supply and the public system.

  • Page 43: Wiring Procedure For Power Cable And Connecting Cable

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 43 Piping and Wiring for Outdoor Unit Wiring Procedure for Power Cable and Connecting Cable Step 1. : Disassemble the side panel from the outdoor unit by loosing screws. Step 2. : Connect Power cable to Main Power Terminal and Connecting cable to Control Terminal, respectively.

  • Page 44: Finalizing

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 44 Piping and Wiring for Outdoor Unit CAUTION The Power cord connected to the unit should be selected according to the following specifications . 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 45: Leakage Test And Evacuation

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 45 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.

  • Page 46: Evacuation

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 46 Piping and Wiring for Outdoor Unit Evacuation 1. Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit. Indoor unit Confirm the "Lo and Hi" knob of the manifold valve is open.

  • Page 47: Piping And Wiring For Indoor Unit

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 47 Piping and Wiring for Indoor Unit 7. Piping and Wiring for Indoor Unit Procedures about water piping and electric wiring at the indoor unit are described in this chapter. Water piping and water circuit connection, water charging, pipe insulations will be shown for water piping procedures.
  • Page 48 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 48 Piping and Wiring for Indoor Unit WARNING Installing shut-off valve • While assembling two shut-off valves, that are found inside ‘AWHP Installation Kit (AET69364401)’, pop sound will be heard when valve is open or close by rotating handles. It is normal condition because the sound is due to leakage of charged nitrogen gas inside the valve.

  • Page 49: Water Charging

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 49 Piping and Wiring for Indoor Unit Water Charging For water charging, please follow below procedures. Step 1. Open all valves of whole water circuit. Supplied water should be charged not only inside the indoor unit, but also in the under floor water circuit, sanitary water tank circuit, FCU water circuit, and any other water circuits controlled by the product.

  • Page 50: Electrical Wiring

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 50 Piping and Wiring for Indoor Unit Electrical Wiring General Consideration Followings are should be considered before beginning indoor unit wiring. • Field-supplied electrical components such as power switches, circuit breakers, wires, terminal boxes, etc should be properly chosen with compliance with national electrical legislation or regulation.

  • Page 51: Terminal Block Information

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 51 Piping and Wiring for Indoor Unit Terminal Block Information Symbols used below pictures are as follows : - L, L1, L2 : Live (230V AC) - N : Neutral (230V AC) - BR : Brown , WH : White , BL : Blue , BK : Black Terminal Block 1 water flow switching between energizing water...

  • Page 52: Connecting With Outdoor Unit

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 52 Piping and Wiring for Indoor Unit CAUTION You should separate the communication wiring, in case of communication wiring length is over 40M Shield cable Separation Power Supply Communication Wiring Connecting with Outdoor Unit Terminal block at outdoor unit Electric Heater Wiring CAUTION...

  • Page 53: Accessories Installation

    In this chapter, specifications about supported 3rd party accessories and how to connect to is introduced. It is noted that this chapter only deal with 3rd party accessories. For accessories supported by LG Electronics, please refer to installation manual of each accessories. Accessories supported by LG Electronics...

  • Page 54: Before Installation

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 54 Accessories Installation Before Installation WARNING Followings should be kept before installation • Main power must be turned off during installing 3rd party accessories. • 3rd party accessories should be comply with supported specification. •...

  • Page 55: How To Wire Thermostat

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 55 Accessories Installation How to wire thermostat Follow below procedures Step 1 ~ Step 5. Step 1. Uncover front cover of the unit and open the control box. Step 2. Identify the power specification of the thermostat. If it is 220-240 V~, go to Step 3. Step 3.

  • Page 56: Final Check

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 56 Accessories Installation Final check • DIP switch setting : Set DIP switch No. 8 to ‘ON’. Otherwise, the unit can not recognize the thermostat. • Remote Controller : - ‘Thermostat’ text is displayed on the remote controller. - Button input is prohibited.

  • Page 57: Dhw Tank And Dhw Tank Kit/Solar Thermal Kit

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 57 Accessories Installation DHW Tank and DHW Tank Kit/Solar Thermal Kit To establish DHW circuit, 3way valve and DHW tank kit is required. If solar thermal system is pre- installed at the installation field, solar thermal kit is required to interface solar thermal system – to – DHW tank –...

  • Page 58: How To Install Dhw Tank

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 58 Accessories Installation How to Install DHW Tank For more detail information about installing DHW tank, please refer installation manual provided with DHW tank. PHS02060310(LGRTV200E) / PHS03060310(LGRTV300E) PHS02060320(LGRTV200VE) / PHS03060320(LGRTV300VE) (unit : mm) 58 Air-to-Water Heat Pump...

  • Page 59: How To Install Dhw Tank Kit

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 59 Accessories Installation How to Install DHW Tank Kit Fellow bellow procedures Spet 1 ~ Step 6 Step 1. Find magnetic switch and ELB(MCCB) in the kit. Fit them into the indoor unit control box with enclosed a braket and screws.(symbol Ⓐ...
  • Page 60 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 60 Accessories Installation Relay contactor ELB(MCCB) port no. port no. assignment assignment Note: Some models are using MCCB instead of ELB Step 6. Find DHW tank sensor. Connect it to ‘CN_TH4’ (Red Connector) of the indoor unit PCB (symbol Ⓐ...

  • Page 61: How To Wire Dhw Tank Heater

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 61 Accessories Installation How to Wire DHW Tank Heater Step 1. Uncover heater cover of the DHW tank. It is located side of the tank. Step 2. Find terminal block and connect wires as below. Wires are field-supplied item. (L) : Live signal from PCB to Heater (N) : Neutral signal from PCB to Heater WARNING...

  • Page 62: How To Install Solar Thermal Kit

    Water Tank Dry Contact LG Dry Contact is a solution for automatic control of air conditioning system at the owner's behest. In simple words, it's a switch which can be used to turn the unit On/Off after getting the signal from external sources like key-in lock, door or window switch etc specially used in Hotel rooms.

  • Page 63: 3Way Valve

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 63 Accessories Installation 3Way Valve How to Wire 3Way Valve Follow below procedures Step 1 ~ Step 2. Step 1. Uncover front cover of the indoor unit and open the control box. Step 2. Find terminal block and connect wire as below. WARNING •...

  • Page 64: 2Way Valve

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 64 Accessories Installation 2Way Valve 2way valve is required to control water flow while cooling operation. Role of 2way valve is to cut off water flow into under floor loop in cooling mode when fan coil unit is equipped for cooling operation. General Information supports following 2way valve.

  • Page 65: Conditions If Accessories Are Installed

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 65 Accessories Installation Conditions if Accessories are Installed This section describes conditions about installation place where accessories are installed. Detailed installation for accessories (including supported accessory specification, wiring, PCB setting for accessory configuration, etc) will be dealt in separated chapter. Thermostat CAUTION 1.

  • Page 66: Dhw Tank And Dhw Tank Kit / Solar Thermal Kit

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 66 Accessories Installation DHW Tank and DHW Tank Kit / Solar Thermal Kit Installing DHW tank requires following considerations : • DHW tank should be located at the flat place. • Water quality should be complied with EN 98/83 EC Directives. •...
  • Page 67 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 67 Accessories Installation WARNING Installing recirculation pump When is used with DHW tank, it is STRONGLY recommended to install recirculation pump to prevent flooding out cold water at the end of hot water supply and to stabilize the water temperature inside DHW tank - The recirculation pump should be operated when DHW demand is not required.

  • Page 68: System Set-Up

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 68 System Set-Up 9. System Set-Up is designed to satisfy various installation environment, it is important to set up system correctly. If not configured correctly, improper operation or degrade of performance can be expected.

  • Page 69: Dip Switch Information

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 69 System Set-Up DIP Switch Information Description Setting Default As Master Role when central controller is equipped As Slave Indoor unit + Outdoor unit is installed Indoor unit + Outdoor unit + DHW tank Accessory installation is installed information...
  • Page 70 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 70 System Set-Up Emergency Operation • Definition of terms - Trouble : a problem which can stop system operation, and can be resumed temporally under limited operation without certificated professional's assist. - Error : problem which can stop system operation, and can be resumed ONLY after certificated professional's check.
  • Page 71 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 71 System Set-Up • Duplicated trouble : Option trouble with slight or heavy trouble - If option trouble is occurred with slight (or heavy) trouble at the same time, the system puts higher priority to slight (or heavy) trouble and operates as if slight (or heavy) trouble is occurred.

  • Page 72: Installer Setting

    LG warrenty. h Installer setting password Main screen ’...

  • Page 73: Summary

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 73 System Set-Up Summary • You can set the product user functions. • Some functions may not be displayed/operated in some product types. Test Description Disable 3 minute Delay Factory use only Remote sensor active Connection information about remote air sensor Celsius / Fahrenheit Switching Display temperature in Celsius or Fahrenheit...

  • Page 74: Common Setting

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 74 System Set-Up Common Setting • 3 Minutes Delay Factory use only. • Remote sensor active If user connects remote air sensor to control the product by room air temperature, the connection information should be notified to the product. Note : If remote air sensor is connected but this function code is not set correctly, the product can not be controlled by room air temperature.

  • Page 75: Temperature Range Setting

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 75 System Set-Up Temperature range setting • Air cooling set temp. Determine cooling setting temperature range when air temperature is selected as setting temperature. Only available when remote air temperature sensor is connected. •...

  • Page 76: Temperature Control Parameter Setting

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 76 System Set-Up Temperature Control Parameter Setting • Heater on temperature Using Half capacity of electric heater : when DIP Switch No. 6 and 7 is set as ‘OFF-ON’ : - Heater on temperature : outdoor air temperature where half capacity of electric heater starts operation.
  • Page 77 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 77 System Set-Up • Seasonal auto mode Weather dependent mode in heating and cooling, auto change over in heating, cooling and DHW only depending on the pre-set interval of temperature. - Change the mode to auto mode - Priority in scheduler (In scheduling, it could be to change mode) - 4 outdoor temp.
  • Page 78 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 78 System Set-Up • Tank disinfection setting 1, 2 Disinfection operation is special DHW tank operation mode to kill and to prevent growth of viruses inside the tank. - Disinfection active : Selecting enable or disable of disinfection operation. - Start date : Determining the date when the disinfection mode is running.
  • Page 79 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 79 System Set-Up • Tank setting 1, 2 Descriptions for each parameters are as following. - Min temp. : temperature gap from Max outdoor temp. - Max outdoor temp. : maximum temperature generated by AWHP compressor cycle. - Example : If Min temp.
  • Page 80 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 80 System Set-Up • Heater priority - Heater priority : determine electric heater and sanitary tank heater on and off. - Example : If Heater priority is set as ‘Main+Boost heater ON’, then electric heater and DHW tank heater are on and off according to control logic.

  • Page 81: 10. Check Points, Maintenance And Troubleshooting

    • Refrigerant leakage degrades the performance. If leakage found, Product Installation Refrigerant leakage contact qualified LG air conditioning installation person. • While cooling operation, condensed dew can drop down to the bottom of the indoor unit. In this case, prepare drainage treatment Drainage treatment (for example, vessel to contain condensed dew) to avoid water drop.

  • Page 82: Maintenance

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 82 Check Points, Maintenance and Troubleshooting Maintenance To assure best performance of , it is required to perform periodical check and maintenance. It is recommended to proceed following check list for once a year. CAUTION Turn off the power before proceeding maintenance Category...

  • Page 83: Troubleshooting

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 83 Check Points, Maintenance and Troubleshooting Troubleshooting operates not properly or it does not start operation, please check following list. CAUTION Turn off the power before proceeding troubleshooting Troubleshooting for Problem while Operation Problem Reason Solution...

  • Page 84: Troubleshooting For Error Code

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 84 Check Points, Maintenance and Troubleshooting Troubleshooting for Error Code Code Description Cause Normal Condition Problem in remote room air sensor • Resistance: 10 kΩ at 25 centigrade (unplugged) → for Problem in refrigerant (inlet side) sensor Remote room air sensor Problem in refrigerant (outlet side) sensor •...

  • Page 85: Airborne Noise Emission

    1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 85 Check Points, Maintenance and Troubleshooting Airborne Noise Emission The A-weighted sound pressure emitted by this product is below 70 dB. • The noise level can vary depending on the site. The figures quoted are emission level and are not necessarily safe working levels. Whilst there is a correlation between the emission and exposure levels, this cannot be used reliably to determine whether or not further precautions are required.
  • Page 86 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 86 86 Air-to-Water Heat Pump...
  • Page 87 1,MFL68681810,영영 2017. 7. 1. 영영 12:55 Page 100...

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