LG Therma V AHUW096A3 Installation Manual

Air-to-water heat pump

Hide thumbs Also See for Therma V AHUW096A3:

Engineering product data book (116 pages)

Installation manual (87 pages)

Service manual (82 pages)

Table Of Contents

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

Table of Contents

Quick Links

Summary of Contents for LG Therma V AHUW096A3

Page 1 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 www.lg.com MFL68681810 Rev.04_062218 Copyright © 2017 - 2018 LG Electronics Inc. All Rights Reserved.
Page 2: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS PREFACE IMPORTANT SAFETY INSTRUCTIONS INSTALLATION PART GENERAL INFORMATION Model Information Model name and related information Parts and Dimensions Control Parts Control Panel Typical Installation Example Cycle Diagram Water cycle INSTALLATION OF OUTDOOR UNIT Conditions where Outdoor Unit is Installed Drill a Hole in the Wall Installation at Seaside Seasonal wind and cautions in winter...
Page 3: Table Of Contents
TABLE OF CONTENTS How to enter service setting Service setting Service contact Model information RMC version lnformation Open source license INSTALLER SETTING How to enter installer setting Installer setting 3 Minutes Delay Select Temperature Sensor Dry Contact Mode Central Control Address Pump test run Air cooling set temp.
Page 4: Preface
• Check points before starting operation are explained. 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.
Page 5: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS Read the precautions in this manual carefully before operating the unit. This symbol indicates that the Operation Manual should be read carefully. This symbol indicates that a service personnel should be handling this equipment with reference to the Installation Manual.
Page 6 IMPORTANT SAFETY INSTRUCTIONS • Always install a dedicated circuit and breaker. - Improper wiring or installation may cause fire or electric shock • Use the correctly rated breaker or fuse. - There is risk of fire or electric • Do not modify or extend the power cable. - There is risk of fire or electric shock.
Page 7 IMPORTANT SAFETY INSTRUCTIONS • A brazed, welded, or mechanical connection shall be made before opening the valves to permit refrigerant to flow between the refrigerating system parts. A vacuum valve shall be provided to evacuate the interconnecting pipe and/or any uncharged refrigerating system part.
Page 8 IMPORTANT SAFETY INSTRUCTIONS • Do not touch (operate) the unit with wet hands. - There is risk of fire or electric shock. • Do not place a heater or other appliances near the power cable. - There is risk of fire or electric shock. •...
Page 9 IMPORTANT SAFETY INSTRUCTIONS • Turn the main power on 6 hours ago before the product starting operation. - Otherwise, it may cause compressor damage. • Do not touch electric parts for 10 minutes after main power off. - There is risk of physical injury, electric shock. •...
Page 10 IMPORTANT SAFETY INSTRUCTIONS • The appliance shall be stored so as to prevent mechanical damage from occurring. • Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants.
Page 11 IMPORTANT SAFETY INSTRUCTIONS • Use a firm stool or ladder when cleaning or maintaining the unit. - Be careful and avoid personal injury. • Do not turn on the breaker or power under condition that front panel cabinet, top cover, control box cover are removed or opened.
Page 12: 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 Item Image Quantity Installation Indoor unit...
Page 13: 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 customize the range of the application. In this chapter, general information of is presented to identify the installation procedure.
Page 14: Model Name And Related Information
GENERAL INFORMATION Model name and related information Power Model Name Capacity Built-In Power Source Outdoor Unit Indoor Unit Electric Source Heating Cooling (Electric Heater(kW) (Unit) (kW) (kW) Phase Capacity Phase Capacity Heater) 5 kW 7 kW 9 kW 220-240 V~ 220-240 V~ 1Ø...
Page 15: Parts And Dimensions
GENERAL INFORMATION Parts and Dimensions Indoor unit(External) (unit : mm) Description Name Remark Control Panel Built-in Remote Controller...
Page 16 GENERAL INFORMATION Indoor unit(Internal) (unit : mm) 289.6 84.5 76 41...
Page 17 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 PCB and terminal blocks Cut-off power input to electric heater at 90 °C...
Page 18 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...
Page 19 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...
Page 20: Control Parts
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 ELB(optional)
Page 21: Control Panel
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 Back button When you move to the previous stage from the menu’s setting stage Up/down/left/right button When you change the menu’s setting value OK button When you save the menu’s setting value On/Off button...
Page 22 GENERAL INFORMATION Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring) (Indoor : Electric Heater 1Ø, Outdoor : 1Ø)
Page 23 GENERAL INFORMATION Wiring Diagram : Indoor and Outdoor Unit(Including Field wiring) (Indoor : Electric Heater 3Ø, Outdoor : 3Ø)
Page 24: Typical Installation Example
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 25 GENERAL INFORMATION CASE 2: Connecting DHW Tank Outdoor Indoor Outdoor Unit Indoor Unit M / F Hot water Fan coil unit Floor heating loop Radiator tank tank tank City water NOTE • DHW tank tank - It should be equipped with internal electric heater to generate sufficient heat energy in very cold season.
Page 26 GENERAL INFORMATION CASE 3: Connecting Solar thermal system Outdoor Indoor Outdoor Unit Indoor Unit M / F 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 27 GENERAL INFORMATION CASE 4: Connecting 2 Circuit [Room A] Main Zone zone (Low Temp.) Outdoor Indoor Outdoor Unit Indoor Unit Mix Kit Floor heating loop Floor heating loop Buffer Tank M / F [Room B] Additional zone (High Temp.) Radiator Radiator NOTE •...
Page 28 GENERAL INFORMATION CASE 5: Connecting 3 Party 3 Way V/V direction Boiler On : Boiler Off : Outdoor Indoor Outdoor Unit Indoor Unit Boiler Buffer Tank M / F Floor Floor Floor heating loop heating loop heating loop NOTE • DHW tank - 3rd Party Boiler - You can control the boiler automatically and manually by comparing the outside temperature and the set temperature.
Page 29: Cycle Diagram
GENERAL INFORMATION Cycle Diagram LIQUID SIDE Service Indoor Unit Valve Plate Heat Exchanger (3 way) Water. Out Outdoor Unit Heat Exchanger Water. In 4 way Pressure Valve GAS SIDE Sensor Service (Accessories) Valve (3 way) Accumulator Compressor Description Category Symbol Meaning Remarks Connector...
Page 30: Water Cycle
GENERAL INFORMATION Water cycle...
Page 31 - This system can include following components SOLAR : Solar panel, Sensors, Thermostats, Interim heat party accessory and Field installation THERMAL exchanger, Water pump, etc. (no connector) (sold separately) - To utilized hot water heated by SOLAR THERMAL SYSTEM SYSTEM, end-user must by LG AWHP Solar-Kit.
Page 32: 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 33: Installation At Seaside
INSTALLATION OF OUTDOOR UNIT Installation at Seaside CAUTION • Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced. • Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the product.
Page 34: Installation Of Indoor Unit
INSTALLATION OF INDOOR UNIT 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. In addition, considerations when installing accessories or 3rd party accessories are described, too.
Page 35 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. NOTE Use a flat-blade screwdriver or a coin to remove the remote control case. Step 2.
Page 36 INSTALLATION OF INDOOR UNIT Step 4. Detach the Installation sheet. Screw bolts at the hole marks on the wall. When screwing bolts, use M8 ~ M11 anchor bolts to secure hanging the indoor unit. NOTE Self drilling screw can be used as alternatives of M8 ~ M11 anchor bolts. But M8 ~ M11 anchor bolts are more preferred.
Page 37: Electrical Wiring
INSTALLATION OF INDOOR 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.
Page 38 INSTALLATION OF INDOOR UNIT Precautions when laying power wiring Use round pressure terminals for connections to the power terminal block. Power wire Round pressure terminal When none are available, follow the instructions below. - Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power wiring may cause abnormal heat.) - When connecting wiring which is the same thickness, do as shown in the figure below.
Page 39 INSTALLATION OF INDOOR 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. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with respectively: Ssc greater than or equal to the minimum Ssc value.
Page 40: Piping And Wiring For Outdoor Unit
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.
Page 41: Preparation For Piping
PIPING AND WIRING FOR OUTDOOR UNIT Preparation for Piping - Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure. - Use the de-oxidised copper as piping materials to install. Step 1. Cut the pipes and the cable. Copper - Use the accessory piping kit or the pipes Slanted Uneven Rough...
Page 42: Connecting Pipe To Indoor Unit
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 43 PIPING AND WIRING FOR OUTDOOR UNIT Step 2. Tightening Continuous - Align the center of the pipes and sufficiently tighten the flare nut by hand. - Tighten the flare nut with a wrench until the wrench clicks - Tightening torque is as following. Outside diameter Torque inch...
Page 44 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 45: Finalizing
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 Seal a small leakage of the refrigerant effects degrade of performance directly.
Page 46: 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. - Pressure in the system rises. - Operating current rises. - Cooling(or heating) efficiency drops. - Moisture in the refrigerant circuit may freeze and block capillary tubing. - Water may lead to corrosion of parts in the refrigeration system.
Page 47 PIPING AND WIRING FOR OUTDOOR UNIT Evacuation Indoor unit - Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit. Confirm the "Lo and Hi" knob of the manifold valve is open.
Page 48: Electrical Wiring
PIPING AND WIRING FOR OUTDOOR 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 49 PIPING AND WIRING FOR OUTDOOR UNIT Terminal Block Information Symbols used below pictures are as follows : - L, L1, L2 : Live (230 V AC) - N : Neutral (230 V AC) - BR : Brown , WH : White , BL : Blue , BK : Black Terminal Block 1 water ﬂow switching between energizing water...
Page 50 PIPING AND WIRING FOR OUTDOOR UNIT CAUTION You should separate the communication wiring, in case of communication wiring length is over 40M Shield Separation cable Power Supply Communication Wiring Connecting with Outdoor Unit Terminal block at outdoor unit Electric Heater Wiring CAUTION Power Cable Specification : The power cord connected to the outdoor unit should be complied with IEC 60245 or HD 22.4 S4(Rubber insulated cord, type 60245 IEC 66 or...
Page 51: Piping And Wiring For Indoor Unit
PIPING AND WIRING FOR INDOOR UNIT 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 52 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 53 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 54: Water Pump Capacity
PIPING AND WIRING FOR INDOOR UNIT Water pump Capacity The water pump us variable type which is capable to change flow rate, so it may be required to change default water pump capacity in case of noise by water flow. In most case, however, it is strongly recommended to set capacity as Maximum.
Page 55: Performance Curve
PIPING AND WIRING FOR INDOOR UNIT Performance curve Indoor : Electric Heater 1Ø, Indoor : Electric Heater 3Ø 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.
Page 56: Water Quality
PIPING AND WIRING FOR INDOOR UNIT Water Quality Water quality should be complied with EN 98/83 EC Directives. Detailed water quality condition can be found in EN 98/83 EC Directives. CAUTION • If the product is installed at existing hydraulic water loop, it is important to clean hydraulic pipes to remove sludge and scale.
Page 57: Water Volume And Expansion Vessel Pressure
PIPING AND WIRING FOR 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. If total water volume is changed because of installation condition, the pre-pressure should be adjusted to secure proper operation.
Page 58: 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 59 ACCESSORIES INSTALLATION Accessories supported by 3rd party Companies Item Purpose Specification To generate auxiliary heating energy Solar Heating System for water tank Heating-Only type (230 V AC) Thermostat To control by air temperature Cooling/Heating type (230 V AC with Mode selection switch) Mix Kit To use 2 Circuit...
Page 60: Before Installation
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. • Proper tools should be chosen for installation. •...
Page 61 ACCESSORIES INSTALLATION Direct Sun ray contact area Direct Sun ray contact area Connection cable (1.5m) (less than 15m) (1.5m) Thermostat Remote Air Temperature Sensor General Information The Heat Pump supports following thermostats. Type Power Operating Mode Supported Heating Only (3) Mechanical 230 V~ Heating / Cooling (4)
Page 62 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 63 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. Circuit The 2nd circuit is generally used to control the temperature of 2 rooms differently.
Page 64 ACCESSORIES INSTALLATION How to Wire 2 Circuit Follow below procedures Step 1 ~ Step 2. Step 1. Uncover front cover of the unit. Step 2. Find terminal block and connect wire as below (L) : Live signal from PCB to mix pump (N) : Neutral signal from PCB to mix pump MIXING VALVE PUMP...
Page 65: Central Controller
ACCESSORIES INSTALLATION Central Controller The product can communicate and control through the central controller. The following functions can be controlled in the central control linked state (Operation/Stop, Desired temperature, Hot water operation / stop, Warm water temperature, Full lock, Etc) How to Installation PI485 Fix the PI485 PCB as shown in below images.
Page 66: Dhw Tank And Dhw Tank Kit/Solar Thermal Kit
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 –...
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 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 Wire specification...
Page 69 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 Ⓐ at picture) Step 2.
Page 70 ACCESSORIES INSTALLATION Check Polarity 1Ø Electric Heater Model - Connect ELB(MCCB) port no. 1 to terminal block 3 port 3 - Connect ELB(MCCB) port no. 3 to terminal block 3 port 4 3Ø Electric Heater Model - Connect ELB(MCCB) port no. 1 to terminal block 3 port 1 - Connect ELB(MCCB) port no.
Page 71 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 unit PCB (symbol Ⓐ at the picture). The sensor wire should be passed through holes for sensor (symbol Ⓑ and Ⓒ...
Page 72 ACCESSORIES INSTALLATION How to Install Solar Thermal Kit Step 1. Check the diameter of pre-installed pipes. (symbol Ⓐ and Ⓑ) Step 2. If the diameter of pre-installed pipes is different from diameter of solar thermal kit, it is necessary to reduce or extend of pipe’s diameter. Step 3.
Page 73: Dry Contact
ACCESSORIES INSTALLATION Dry Contact LG Dry Contact is a solution for automatic control of AWHP 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 74: 2Way Valve
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.
Page 75: 3Way Valve
ACCESSORIES INSTALLATION 3Way Valve 3way valve is required to operate sanitary water tank. Role of 3way valve is flow switching between under floor heating loop and water tank heating loop. General Information supports following 3way valve. Type Power Operating Mode Supported Selecting “Flow A”...
Page 76: Air-Vent
ACCESSORIES INSTALLATION Final check • Flow direction : - Water should flow from water outlet of the unit to sanitary tank water inlet when sanitary tank heating is selected. - To verify the flow direction, check temperature at the water outlet of the unit and water inlet of sanitary water tank.
Page 77: Final Check
ACCESSORIES INSTALLATION Final check Check point Description - Check if the shut-off valves should be assembled with Connection of Water Water inlet and outlet pipe of the unit Inlet/Outlet - Check the location of the water inlet/outlet water pipe - Check the pressure of supplying water by using pressure gage inside the unit Hydraulic pressure - Pressure of Supplying water should be Under 3.0 bar...
Page 78: Configuration
CONFIGURATION CONFIGURATION 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. DIP Switch Setting CAUTION Turn off electric power supply before setting DIP switch •...
Page 79 CONFIGURATION DIP Switch Information Description Description Setting Setting Default Default As Master Role when central controller is equipped As Slave Unit + Outdoor unit is installed Unit + Outdoor unit + DHW tank Accessory installation is installed information Unit + Outdoor unit + DHW tank + Solar thermal system is installed...
Page 80 CONFIGURATION Option Switch 1 Description Description Setting Setting Default Default As Master MODBUS As Slave Common 3 party MODBUS Function SIEMENS Reserved Reserved Reserved Reserved Description Setting Default...
Page 81 CONFIGURATION NOTE 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 82 CONFIGURATION NOTE • 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 83: Service Setting
CONFIGURATION SERVICE SETTING How to enter service setting To enter the menu displayed at the bottom, you need to enter the service setting menu as follows. • In the menu screen, press [<,>(left/right)] button to select the setting category, and press [OK] button to move to the setting list.
Page 84: Service Contact
SERVICE SETTING Service contact Check and input the service center phone number that you can call when there is service issue. • In the service setting list, select the service contact point and press [OK] button to move to the detail screen.
Page 85: Model Information
SERVICE SETTING Model information Check product and capacity information to which the remote controller is connected. • In the service setting list, select model information category, and press [OK] button to move to the detail screen. • The unit capacity - 1kWh = 1kBtu * 0.29307 kWh is the result calculated based on Btu, There may be a small difference between calculated and actual capacity.
Page 86: Rmc Version Lnformation
SERVICE SETTING RMC version lnformation View the remote controller software version. • In the service setting list, select the RMC version information and press [OK] button to move to the detail screen...
Page 87: Open Source License
SERVICE SETTING Open source license View the remote controller’s open source license. • In the service setting list, select the open source license category, and press [OK] button to move to the detail screen.
Page 88: Installer Setting
It must be set by the installation specialist with the installation license, and if it is installed or changed without installation license, all problems caused will be the responsibility of the installer, and may void the LG warrenty. • In the menu screen, press [<,>(left/right)] button to select the setting category, and press [∧(up)] button for 3 seconds to enter the password input screen for the installer setting.
Page 89: Installer Setting
INSTALLER SETTING Installer setting • You can set the product user functions. • Some functions may not be displayed/operated in some product types. Function Description 3 Minutes Delay Factory use only Selection for setting temperature as air temperature or leaving Select Temperature Sensor water temperature or air+leaving water temperature Dry contact function is the function that can be used only when the...
Page 90: Th On/Off Variable, Cooling Air
INSTALLER SETTING Function Description TH on/off Variable, cooling Cooling air temperature TH On / Off Type setting air setting TH on/off Variable, cooling Cooling Water Outlet Temperature TH On / Off Type Water setting Pump setting in heating Set water pump on / off delay option in heating mode Pump setting in cooling Set water pump on / off delay option in cooling mode Water pump off After 20 consecutive hours, disable / enable the...
Page 91: 91 3 Minutes Delay
INSTALLER SETTING 3 Minutes Delay Temporarily eliminates the 3-minute delay function of the outdoor unit Comp - Factory use only • In the installer setting list, select 3 Minutes Delay category, and press [OK] button to move to the detail screen.
Page 92: Select Temperature Sensor
INSTALLER SETTING Select Temperature Sensor The product can be operated according to air temperature or leaving water temperature. The selection for setting temperature as air temperature or leaving water temperature is determined. • In the installer setting list, Select Temperature Sensor category, and press [OK] button to move to the detail screen.
Page 93: Dry Contact Mode
INSTALLER SETTING Dry Contact Mode Dry contact function is the function that can be used only when the dry contact devices is separately purchased and installed. • Change setting values using [<,>(left/right)] button. Value Auto manual NOTE For dry contact mode related detail functions, refer to the individual dry contact manual. What is dry contact? It means the contact point signal input when the hotel card key, human body detection sensor, etc.
Page 94: Central Control Address
INSTALLER SETTING Central Control Address When connecting the central control, set the central control address of the unit. • In the installer setting list, select Central Control Address category, and press [OK] button to move to the detail screen. NOTE Enter address code as hexadecimal value Front: Central Control Gr.
Page 95: Pump Test Run
INSTALLER SETTING Pump test run The pump test run is the function to test run by operating the water pump. This function can be used for air vents / flow sensors and others. • In the installer setting list, Pump Test run category, and press [OK] button to move to the detail screen.
Page 96: Air Cooling Set Temp
INSTALLER SETTING Air cooling set temp. Determine cooling setting temperature range when air temperature is selected as setting temperature. • In the installer setting list, select Air cooling set temp category, and press [OK] button to move to the detail screen. Value Default Range...
Page 97: Water Cooling Set Temp
INSTALLER SETTING Water cooling set temp Determine cooling setting temperature range when leaving water temperature is selected as setting temperature. • In the installer setting list, select water cooling set temp category, and press [OK] button to move to the detail screen. Value Default Range...
Page 98: Air Heating Set Temp
INSTALLER SETTING Air heating set temp. Determine heating setting temperature range when air temperature is selected as setting temperature • In the installer setting list, select Air heating set temp. category, and press [OK] button to move to the detail screen. Value Default Range...
Page 99: Water Heating Set Temp
INSTALLER SETTING Water heating set temp Determine heating setting temperature range when leaving water temperature is selected as setting temperature • In the installer setting list, select Water heating set temp. category, and press [OK] button to move to the detail screen. Value Default Range...
Page 100: Dhw Set Temp
INSTALLER SETTING DHW set temp Determine heating setting temperature range when DHW temperature is selected as setting temperature • In the installer setting list, select DHW set temp. category, and press [OK] button to move to the detail screen. Value Range Max.
Page 101: Screed Drying
INSTALLER SETTING Screed drying This function is a unique feature of AWHP that, when AWHP is installed in a new concrete structure, controls the specific temperature floor heating out temperature for a certain period of time to cure the floor cement. •...
Page 102 INSTALLER SETTING NOTE • During Screed drying operation, button input except for installer function and temperature display is restricted. • When the power is applied again after a power outage during product operation, the product operation state before power failure is remembered and the product is automatically operated.
Page 103: Heater On Temperature
INSTALLER SETTING Heater on temperature Depending on local climatic conditions, it is necessary to change the temperature condition in which electric heater turns on / off. • In the installer setting list, Heater on temperature category, and press [OK] button to move to the detail screen.
Page 104 INSTALLER SETTING NOTE • Heater on temperature Using Half capacity of electric heater : when DIP Switch No. 6 and 7 is set as ‘OFF-ON’ : - Example : If Heater on temperature is set as ‘-1’ and DIP switch No 6. and 7 is set as ‘OFF-ON’, then half capacity of electric heater will start operation when outdoor air temperature is below -1 °C and current leaving water temperature or room air temperature is much belower than target leaving water temperature or target room air temperature.
Page 105: Water Supply Off Temp. During Cooling
INSTALLER SETTING Water supply off temp. during cooling Determine leaving water temperature when the unit is turned off. This function is used for preventing condensation on the floor in cooling mode • In the installer setting list, select Water supply off temp. during cooling category, and press [OK] button to move to the detail screen.
Page 106 INSTALLER SETTING - Stop temp. : cut-off temperature. Stop temp. is valid when FCU is installed. - FCU : determines if FCU is installed or not. - Example : If Stop temp. is set as ‘10’ and FCU is ’Use’ and actually FCU is NOT installed in the water loop, the unit stop operation in cooling mode when the leaving water temperature is below 10 °C.
Page 107: Tank Disinfection Setting
INSTALLER SETTING 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. - Start time : Determining the time when the disinfection mode is running.
Page 108: Tank Setting 1
INSTALLER SETTING Tank setting 1 • In the installer setting list, select tank setting 1 category, and press [OK] button to move to the detail screen. Value Range Max outdoor temp 55~40 Min temp 30~1...
Page 109: Tank Setting 2
INSTALLER SETTING Tank setting 2 • In the installer setting list, select tank setting 2 category, and press [OK] button to move to the detail screen. Value Range Hysteresis Heating priority Floor heating / DHW...
Page 110 INSTALLER SETTING • 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. is set as ‘5’ and Max outdoor temp. is set as ’48’, then Session A (see the graph) will be started when the water tank temperature is below 45 °C….
Page 111: Heater Priority
INSTALLER SETTING Heater priority • Heater priority : determine electric heater and DHW 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. If Heater priority is set as ‘Boost heater only ON’, then electric heater is never turned on and only DHW tank heater is on and off according to control logic.
Page 112: Dhw Time Setting
INSTALLER SETTING DHW time setting Determine following time duration : operation time of DHW tank heating, stop time of DHW tank heating, and delay time of DHW tank heater operating. - Active time : This time duration defines how long time DHW tank heating can be continued. - Stop time : This time duration defines how long time DHW tank heating can be stopped.
Page 113: Th On/Off Variable, Heating Air
INSTALLER SETTING TH on/off Variable, heating air It is a function to adjust the heating air temperature Thermal On / Off temperature according to the field environment in preparation for heating or heating claim. • You can set the following setting values using [<,>(left/right)] button. Description Value TH On...
Page 114: Th On/Off Variable, Heating Water
INSTALLER SETTING TH on/off Variable, heating water It is a function to adjust the heating water temperature Thermal On / Off temperature according to the field environment in preparation for heating or heating claim. • You can set the following setting values using [<,>(left/right)] button. Description Value TH On...
Page 115: Th On/Off Variable, Cooling Air
INSTALLER SETTING TH on/off Variable, cooling air It is a function to adjust the cooling air temperature Thermal On / Off temperature according to the field environment in preparation for cooling or cooling claim. • You can set the following setting values using [<,>(left/right)] button. Description Value TH On...
Page 116: Th On/Off Variable, Cooling Water
INSTALLER SETTING TH on/off Variable, cooling water It is a function to adjust the cooling water temperature Thermal On / Off temperature according to the field environment in preparation for cooling or cooling claim. • You can set the following setting values using [<,>(left/right)] button. Description Value TH On...
Page 117: Pump Setting In Heating
INSTALLER SETTING Pump setting in heating • It is a function to help the water pump's mechanical life by putting the water pump's rest time • Installer setting function to set water pump operation / delay time option in heating mode •...
Page 118: Pump Setting. In Cooling
INSTALLER SETTING Pump setting. in cooling • It is a function to help the water pump's mechanical life by putting the water pump's rest time • installer setting function to set water pump operation / delay time option in cooling mode •...
Page 119: Forced Operation
INSTALLER SETTING Forced operation • If the product is not used for a long time, the product will be forced to operate to prevent pump failure and PHEX freezing • Water pump off After 20 consecutive hours, disable / enable the logic that drives the water pump by itself •...
Page 120: Cn_Cc
INSTALLER SETTING CN_CC It is the function to set the usage of the unit’s CN_CC port. • Change setting values using [<,>(left/right)] button Value Description When power is applied to the product, the unit when the contact point D/C Automatic is on in Dry Contact installed state recognizes Dry Contact installation D/C Not Installed Do not use (install) Dry Contact...
Page 121: Pump Frequency Setting (Rpm)
INSTALLER SETTING Pump frequency setting (RPM) It is a function to enable installer to control pump RPM of BLDC pump application model. • In the installer setting list, select Pump frequency setting(RPM) category, and press [OK] button to move to the detail screen. Value Description 500~3700 : RPM...
Page 122: Smart Grid(Sg)
INSTALLER SETTING Smart Grid(SG) It is the function to enable / disable the SG Ready function and to set the reference value at SG2 step. • In the installer setting list, select Smart Grid(SG) category, and press [OK] button to move to the detail screen.
Page 123: Seasonal Auto Temp
INSTALLER SETTING Seasonal auto temp It is the function to set the operation reference value in Seasonal Auto mode. • In the installer setting list, select Seasonal auto temp category, and press [OK] button to move to the detail screen. Function Description Range...
Page 124 INSTALLER SETTING In this mode, setting temperature will follow outdoor temperature automatically. This mode adds the cooling season function to the conventional weather dependent operation mode. Auto-Adjustable Leaving Outdoor Room Air Temp.(°C) Target Temp. Water Temp. Air Temp. Set point 1 30~20 57~39 Set point 5...
Page 125: Modbus Address
INSTALLER SETTING Modbus Address It is function to set the address of the Modbus device that is externally linked to the product. Modbus address setting function is available from indoor unit. • In the installer setting list, select Modbus Address , and press [OK] button to move to the detail screen.
Page 126: Cn_Ext
INSTALLER SETTING CN_EXT It is a function to control external input and output according to DI type set by customer using CN-EXT Port. • In the installer setting list, select CN-EXT Port category, and press [OK] button to move to the detail screen.
Page 127: Add Zone
INSTALLER SETTING Add Zone Function to set whether or not to use a installed 2nd circuit function using mixing kit. You can set valve closing time[sec] and hysteresis temperature[°C] on screen by yourself. Activating this function, It allows 2 zones(Room1, Room2) temperature to be controlled, separately.
Page 128: Use External Pump
INSTALLER SETTING Use External Pump This function can be set to control the external water pump. • In the installer setting list, select Use External Pump category, and press [OK] button to move to the detail screen. Value Not use...
Page 129: 3Rd Party Boiler
INSTALLER SETTING Party Boiler This function is to configure the 3rd party boiler to be controlled. If the status of this function is “Use”, you can choose control mode of boiler, Auto or Manual. If the mode of this function is set to “Manual”, you can set temperature of the boiler and hysteresis, respectively.
Page 130: Meter Interface
INSTALLER SETTING Meter Interface It is the function that can check the status of energy and power on screen. It collects and calculates power or calorie data to create data for energy monitoring and energy warning alarm pop-ups. This function can be activated in installer mode. There are 2 options, modbus address and unit, in this function.
Page 131 INSTALLER SETTING Pump Prerun/Overrun Pump Prerun operates to ensure sufficient flow before the compressor is operated. This is a function that allows heat exchange to work smoothly. Pump Overrun is a function to prevent water pump failure and to help mechanical life. If the water pump has been off for 20 hours, Water pump will operate for the set time...
Page 132: Data Logging
INSTALLER SETTING Data logging It is the function to set the operation reference value in Seasonal Auto mode. • In the installer setting list, select Data logging category, and press [OK] button to move to the detail screen. NOTE Error history lookup range: 50 Error history information Item: date, time, mode (including Off), set temperature, incoming temperature, outgoing temperature, room temperature, Hot water operation / stop, Hot water set...
Page 133: Password Initialization
INSTALLER SETTING Password Initialization It is the function to initialize (0000) when you forgot the password set in the remote controller. • In the installer setting list, select the password initialization setting category, and press [OK] button to move to the detail screen. •...
Page 134: Power Supply Blockage (Sg Ready)
INSTALLER SETTING Power Supply Blockage (SG Ready) The heat pump operated automatically by the power supply status signals from power supply companies. This function can respond to European countries’ special tariff for heat pump using on a smart grid. Power Supply Status Operating Mode 0:0 [Normal Operation] The heat pump works at maximum...
Page 135: Overview Settings
INSTALLER SETTING Overview settings Menu Structure Menu Sub function ............84 Service contact ............85 Model information ............86 RMC version lnformation ............87 Open source license Installer ............91 3 Minutes Delay ............92 Select Temperature Sensor ............93 Dry Contact Mode ............94 Central Control Address ............95 Pump Test run ............96...
Page 136 INSTALLER SETTING .............115 TH on/off Variable, cooling air .............116 TH on/off Variable, cooling water .............117 Pump setting in heating .............118 Pump setting. in cooling .............119 Forced operation .............120 CN_CC .............121 Pump frequency setting (RPM) .............122 Smart Grid(SG) .............123 Seasonal auto temp .............125 Modbus Address .............126...
Page 137: Commissioning
• Refrigerant leakage degrades the performance. If leakage found, Refrigerant leakage contact qualified LG air conditioning installation person. • While cooling operation, condensed dew can drop down to the bottom of the unit. In this case, prepare drainage treatment (for Drainage treatment example, vessel to contain condensed dew) to avoid water drop.
Page 138: Starting Operation
COMMISSIONING 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 Item Check Point •...
Page 139: Starting Operation Flow Chart
COMMISSIONING Starting Operation ﬂow chart START Check whether the power cable and Operate the unit in heating mode. communication cable are completely connected Does Test operation start? Is cold water discharged for * Check the load (In/Out Temp.) more than 3 minutes ? * Check pipe length and amount of refrigerant Is there any temperature...
Page 140: Troubleshooting
COMMISSIONING 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 • Set target temperature correctly. • Setting target temperature •...
Page 141 COMMISSIONING Troubleshooting for Error Code Code No. Description Cause Normal Condition • Resistance: 10 k at 25 centigrade Problem in remote room air sensor (unplugged) → for Remote room Problem in refrigerant (inlet side) sensor air sensor Problem in refrigerant (outlet side) sensor •...
Page 142 COMMISSIONING Display Title Cause of error Check point & Normal condition code • An instant over current in the U,V,W phase - Comp lock • Instant over current - The abnormal connection of U,V,W DC PEAK • Over Rated current •...
Page 143 COMMISSIONING Display Title Cause of error Check point & Normal condition code • Bad connection of connector PCB(Inverter) • Bad connection high pressure connector Sensor error of high Abnormal value of sensor • Defect of high pressure connector (Open/Short) pressure (Open/Short) •...
Page 144 COMMISSIONING Display Title Cause of error Check point & Normal condition code 1. Overload operation (Pipe clogging/Covering/EEV (HM**1M U*3) PCB(Inverter) input defect/Ref.overcharge) power current is over 48A(Peak) for AC input instant over 2. Compressor damage (Insulation damage/Motor 2ms. current error damage) (HM**3M U*3) PCB(Inverter) input (Matter of software)
Page 145 [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...

This manual is also suitable for:

Therma v ahnw16606a3

LG Therma V AHUW096A3 Installation Manual

Preface

Important Safety Instructions

Installation Part

General Information

Installation of Outdoor Unit

Installation of Indoor Unit

Piping and Wiring for Outdoor Unit

Piping and Wiring for Indoor Unit

Accessories Installation

Configuration

Service Setting

Installer Setting

Commissioning

Quick Links

Related Manuals for LG Therma V AHUW096A3

Summary of Contents for LG Therma V AHUW096A3

This manual is also suitable for:

Table of Contents