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Accessories Installation

44

Air-to-Water Heat Pump

5. Accessories Installation

can interface to various accessories to extend its functionality and to improve user

convenience. In this chapter, accessories and how to connect to is introduced.

See the chapter 7 for a dip-switch settings and installer settings.

For accessories supported by LG Electronics, please refer to installation manual of each accessories.

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.
• Never do installation with wet hands.

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Summary of Contents for AHBW Series

Page 1: ...stallation 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 TYPE Air to Water Heat Pump MODEL AHBW A0 AHBW H0 P NO MFL62567801 ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH ΕΛΛΗΝΙΚΆ PORTUGUESE ...

Page 2: ... PARTY COMPANIES 9 TYPICAL INSTALLATION EXAMPLE 10 CASE 1 10 CASE 2 11 CASE 3 12 CYCLE DIAGRAM 13 REFRIGERANT CYCLE 13 WATER CYCLE 14 PARTS AND DIMENSIONS 18 CONTROL PARTS 21 CONTROL BOX 21 REMOTE CONTROLLER 24 WIRING DIAGRAM INCL FIELD WIRING 27 3 INSTALLATION OF UNIT 28 CONDITIONS WHERE UNIT IS INSTALLED 28 GENERAL CONSIDERATIONS 28 TRANSPORT 29 WATER VOLUME AND PUMP CAPACITY 29 WATER QUALITY 30...

Page 3: ...RMOSTAT 45 FINAL CHECK 46 SANITARY WATER TANK AND SANITARY WATER TANK KIT 48 INSTALLATION CONDITION 48 HOW TO INSTALL SANITARY WATER TANK 50 HOW TO INSTALL SANITARY WATER TANK KIT 51 HOW TO WIRE SANITARY WATER TANK HEATER 51 DRY CONTACT 52 REMOTE TEMPERATURE SENSOR 53 3WAY VALVE 54 GENERAL INFORMATION 54 HOW TO WIRE 3WAY VALVE 54 FINAL CHECK 55 AIR VENT 55 WATER VOLUME AND EXPANSION VESSEL PRESSUR...

Page 4: ... STARTING OPERATION 75 MAINTENANCE 76 TROUBLESHOOTING 77 TROUBLESHOOTING FOR PROBLEM WHILE OPERATION 77 TROUBLESHOOTING FOR ERROR CODE 78 REMARK ALL CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE TO GET THE LATEST INFORMATION PLEASE VISIT LG ELECTRONICS WEB SITE www lgservice com ...

Page 5: ... This symbol indicates the possibility of death or serious injury This symbol indicates the possibility of injury or damage to properties only n Installation Be sure not to do Be sure to follow the instruction Do not use a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock For electrical work contact the dealer seller a qualifi...

Page 6: ...ctric shock Turn the main power off when cleaning or maintaining the unit There is risk of electric shock Take care to ensure that nobody could step on or fall onto the unit This could result in personal injury and unit damage Do not allow water to run into electric parts There is risk of fire failure of the unit or electric shock Do not store or use flammable gas or combustibles near the unit The...

Page 7: ...d damage the neighborhoods It may cause a problem for your neighbors Use two or more people to lift and transport the unit Avoid personal injury Safety Precautions n Operation Do not lay on the cooled floor for long time when the unit is in cooling operation This could harm to your health Do not use the unit for special purposes such as preserving foods works of art etc It is a consumer unit not a...

Page 8: ... installation Model name and related information tested under Eurovent Heating condition water temperature 30 C 35 C at outdoor ambient temperature 7 C 6 C tested under Eurovent Cooling condition water temperature 23 C 18 C at outdoor ambient temperature 35 C 24 C Unit Capacity Power Source Unit Heating kW Cooling kW AHBW036H0 3 1 Ø 220 240 V 50 Hz AHBW056A0 4 99 4 99 1 Ø 220 240 V 50 Hz AHBW076A0...

Page 9: ...ter heating or floor heating Heating Only type 1 Ø 230 V or 1 Ø 24V Cooling Heating type 1 Ø 230 V or 1 Ø 24 VAC with mode selection switch 3 wire SPDT Single Pole Double Throw type 1 Ø 230 V Item Purpose Model Sanitary water tank install kit Remote air sensor Dry contact Sanitary water tank To operate with sanitary water tank To control by air temperature To receive on off external signal To gene...

Page 10: ...or High temperature Room thermostat field supply 2way valve field supply By pass valve field supply Low temperature Expansion tank Strainer Mesh 1 mm 1 mm Remote controller E T Electric heater E H S R Air vent A Typical Installation Example Note Room thermostat Type of thermostat and specification should be complied with chapter 6 of installation manual 2way valve It is important to install 2way v...

Page 11: ...y pass valve Field supply Low temperature Expansion tank Air vent Strainer mesh 1 mm 1 mm Remote controller E T Electric heater E H A S R Note Electric heater Type of electric heater and specification should be complied with chapter 6 of installation manual Sanitary water tank It should be equipped with internal electric heater to generate sufficient heat energy in very cold season 3way valve Type...

Page 12: ...alve Field supply 3way valve Field supply By pass valve Field supply Low temperature Expansion tank Field supply Air vent Strainer mesh 1 mm 1 mm Field supply Remote controller E T Electric heater E H A S R Note 3way valve Type of 3way valve and specification should be complied with chapter 6 of installation manual Sanitary water tank It should be equipped with internal electric heater to generate...

Page 13: ... Side Inside of Monobloc Product PHE EXP Tank E Heater Strainer F Switch are not provided in product EXP TANK Under floor Heating Radiator City Water Shower W TANK 3WAY V V_1 Unit Monobloc B HT Field Installation Th11 Remote Room Temperature Sensor accessory LG Supply Accessory Sanitary water tank is installed Sanitary water tank kit is necessary Basic Installation Field installation parts are not...

Page 14: ...t PHE Fan Coil Unit Under floor Heating Radiator 3WAY V V_1 2WAY V V Unit Monobloc Field Installation Th11 Remote Room Temperature Sensor accessory LG Supply Accessory Solar thermal system is connected Solar thermal kit is necessary Sanitary water tank is installed Sanitary water tank kit is necessary Basic Installation Field installation parts are not provided in product City Water Shower W Tank ...

Page 15: ...TH3 Th8 and Th9 are connected at 6 pin type connector CN_TH3 Th9 Interim water temperature sensor Th10 Leaving water temperature sensor Th11 Remote air temperature sensor CN_ROOM Optional accessory sold separately Model PQRSTA0 EXP TANK Expansion tank no connector Absorb volume change of heated water E HT Electric Heater CN_E HEAT A CN_E HEAT B Heating capacity is divided into two level partial ca...

Page 16: ...h is leaving from unit Flow direction switching between under floor and water tank CN_3WAY A 3rd party accessory and field installation sold separately SPDT type 3way valve is supported 3WAY V V_2 Flow control for water which is heated and circulated by SOLAR THERMAL SYSTEM Flow direction switching between SOLAR THERMAL SYSTEM and W TANK CN_3WAY B 3rd party accessory and Field installation sold se...

Page 17: ...scharge pipe temperature sensor Th6 Condenser temperature sensor CN_TH1 Description is expressed based on cooling mode Th6 and Th7 are connected at 4 pin type connector CN_TH1 TH7 Air temperature sensor Outdoor Th8 Entering water temperature sensor CN_TH3 Th8 and Th9 are connected at 6 pin type connector CN_TH3 Th9 Leaving water temperature sensor Th11 Remote air temperature sensor CN_ROOM Optiona...

Page 18: ... party accessory and field installation sold separately SPDT type 3way valve is supported 3WAY V V_2 Flow control for water which is heated and circulated by SOLAR THERMAL SYSTEM Flow direction switching between SOLAR THERMAL SYSTEM and W TANK CN_3WAY B 3rd party accessory and Field installation sold separately SPDT type 3way valve is supported W_PUMP 2 External Water Pump CN_W PUMP B 3rd party ac...

Page 19: ...pe 2 Leaving water pipe PT 25 4mm Female type 3 Strainer Filtering and stacking particles inside circulating water 4 Top cover 5 Control box PCB and terminal blocks 6 Plate heat exchanger Heat exchange between refrigerant and water 7 Water pump 8 Pressure gage Indicates circulating water pressure 9 Safety valve Open at water pressure 3 bar 10 Compressor ...

Page 20: ...water pipe PT 25 4mm Female type 3 Strainer Filtering and stacking particles inside circulating water 4 Top cover 5 Control box PCB and terminal blocks 6 Plate heat exchanger Heat exchange between refrigerant and water 7 Water pump 8 Pressure gage Indicates circulating water pressure 9 Safety valve Open at water pressure 3 bar 10 Compressor ...

Page 21: ... 3 4 5 6 7 Description No Name Remarks 1 Entering water pipe PT 25 4 mm Male type 2 Leaving water pipe PT 25 4 mm Male type 3 Top cover 4 Control box PCB and terminal blocks 5 Plate heat exchanger Heat exchange between refrigerant and water 6 Water pump 7 Compressor ...

Page 22: ... 3 2 1 Description No Name Remarks 1 Main PCB assembly 1 This PCB controls the functioning of the unit 2 Main PCB assembly 2 This PCB controls the cycle parts of the unit 3 Terminal block The terminal blocks allow easy connection of field wiring 4 Cord clamp Control Parts ...

Page 23: ...is 4 3 2 1 Description No Name Remarks 1 Main PCB assembly 1 This PCB controls the functioning of the unit 2 Main PCB assembly 2 This PCB controls the cycle parts of the unit 3 Terminal block The terminal blocks allow easy connection of field wiring 4 Cord clamp ...

Page 24: ...36H0 Description No Name Remarks 1 Main PCB assembly 1 This PCB controls the functioning of the unit 2 Main PCB assembly 2 This PCB controls the cycle parts of the unit 3 Terminal block The terminal blocks allow easy connection of field wiring 4 Cord clamp 2 1 3 4 ...

Page 25: ...y not be operated and displayed No Name 1 Display 2 Change Temperature Button 3 Water Heating Enable Disable Button 4 Power Button 5 Operation Mode Selection Button 6 Temperature Setting Mode Button 7 Temperature View Mode Button 8 Function Setting Button 9 Programming Button 10 Direction Button Up Down Left Right 11 Set Clear button 12 ESC Button ...

Page 26: ...General Information 26 Air to Water Heat Pump Wiring Diagram Including Field Wiring AHBW0 6A0 ...

Page 27: ...General Information Installation Manual 27 ENGLISH Wiring Diagram Including Field Wiring AHBW1 6A0 ...

Page 28: ...General Information 28 Air to Water Heat Pump Wiring Diagram Including Field Wiring AHBW 8A0 ...

Page 29: ...General Information Installation Manual 29 ENGLISH Wiring Diagram Including Field Wiring AHBW036H0 ...

Page 30: ...ation are minimum Select a place so that the warm air and noise from the unit do not disturb neighbors The surface of the ground or the structure must be strong enough to bear the weight of the unit Transport The unit should be transported to the final installation site on a wooden pallet The unit should be transported by means of a lift truck or dray Installation Conditions More than 300mm Fence ...

Page 31: ...f the unit Operation cutoff range 12 kW 14 kW 16 kW 5 kW 7 kW 9 kW The water pump is three speed adjustable Maximum Medium Minimum so it may be required to change default water pump speed in case of noise by water flow In most case however it is strongly recommended to set speed as Maximum Water pump speed To secure enough water flow rate do not set water pump speed as Min It can lead unexpected f...

Page 32: ...20 μg l Nitrate 50 mg l Nitrite 0 50 mg l Pesticides 0 10 μg l Pesticides Total 0 50 μg l Polycyclic aromatic hydrocarbons 0 10 μg l Selenium 10 μg l Tetrachloroethene and Trichloroethene 10 μg l Trihalomethanes Total 100 μg l Vinyl chloride 0 50 μg l If the unit is installed at existing hydraulic water loop it is important to clean hydraulic pipes to remove sludge and scale Installing sludge stra...

Page 33: ...to upper and right side please set up after removing remote controller cable guide groove h Remove guide groove with long nose Reclamation to the surface of the wall Upper part guide groove Right part guide groove 3 Please fix remote controller upper part into the setup board attached to the surface of the wall as the picture below and then connect with setup board by pressing lower part Please co...

Page 34: ...hen installing the wired remote controller do not bury it in the wall It can cause damage in the temperature sensor Do not install the cable to be 50m or above It can cause communication error When installing the extension cable check the connecting direction of the connector of the remote controller side and the product side for correct installation If you install the extension cable in the oppos...

Page 35: ...ler box should be installed in a place away from direct sunlight high humidity and direct supply of cold air to maintain proper space temperature Install the remote controller about 1 5 m above the floor in an area with good air circulation at an average temperature Do not install the remote controller where it can be affected by Drafts or dead spots behind doors and in corners Hot or cold air fro...

Page 36: ...not to be exposed to the sea wind 3 Select a well drained place It should be strong enough like concrete to prevent the sea wind from the sea The height and width should be more than 150 of the unit It should be keep more than 700 mm of space between unit and the windbreak for easy air flow CAUTION Sea wind Sea wind Sea wind Windbreak Sufficient measures are required in a snow area or severe cold ...

Page 37: ...four steps Before starting wiring check if wire specification is suitable and read following directions and cautions VERY carefully Wire specification Power cable specification The power cord connected to the unit should be complied with IEC 60245 or HD 22 4 S4 Rubber insulated cord type 60245 IEC 66 or H07RN F Round pressure terminal Power wire Terminal specification of power cable and related ca...

Page 38: ...om the attack of wild animal For example mice s wire attacking or frog s entering into the unit may cause critical electrical accident All power connections should be protected from dew condensation by thermal insulation All electrical wiring should comply with national or local electrical legislation or regulation The ground should be connected exactly Do not earth the unit to the copper pipe ste...

Page 39: ...ALVE A THERMOSTAT Default 230V AC 11 1 L BR 12 2 N BL 13 3 BK 14 L1 BR 15 L2 WH 16 N BL 17 L BR 18 N BL 19 L1 WH 20 L2 BK energizing water pump for solar thermal system water flow switching between under floor heating and sanitary water tank heating water flow switching between using solar thermal heating and skipping solar thermal heating turn on or off sanitary water tank heater 3WAY VALVE B WAT...

Page 40: ...ater tank electric heater Power supply for Indoor unit and communication Connection for thermostat 230V AC or 24V AC Supporting type Heating only or Heating Cooling OUTDOOR UNIT THERMOSTAT Default 230V AC 11 1 L BR 12 2 N BL 13 3 BK 14 15 16 17 L BR 18 N BL 19 L1 WH 20 L2 BK energizing water pump for solar thermal system water flow switching between under floor heating and sanitary water tank heat...

Page 41: ...the name plate 7 Confirm that the cable thickness is as specified in the power sources specification Particularly note the relation between cable length and thickness 8 Provide an ELB electric leakage breaker when the installation place is wet or moist 9 The following troubles would be caused by abnormal voltage supply such as sudden voltage increasing or voltage drop down Chattering of a magnetic...

Page 42: ...void dust entering When cutting or welding the pipe always be careful that inner section of the pipe should not be defective For example no weldments or no burrs are found inside the pipe Drain piping should be provided in case of water discharge by the operation of the safety valve This situation can be happened when the internal pressure is over 3 0 bar and water inside the unit will be discharg...

Page 43: ...umid environment do not set leaving water temperature below 18 C Water condensation on the radiator While cooling operation cold water may not flow to the radiator If cold water enters to the radiator dew generation on the surface of the radiator can be occurred Drainage treatment While cooling operation condensed dew can drop down to the bottom of the unit In this case prepare drainage treatment ...

Page 44: ...ed See the chapter 7 for a dip switch settings and installer settings For accessories supported by LG Electronics please refer to installation manual of each accessories 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 45: ...ere external thermal influence may be applied such as above heating radiator or open window 1 Some electro mechanical type thermostat has internal delay time to protect compressor In that case mode change can takes time more than user s expectation Please read thermostat manual carefully if the unit does not response quickly 2 Setting temperature range by thermostat can be different with that of t...

Page 46: ...ating ON or Heating OFF signal according to user s heating target temperature 4 hermostat generates both Heating ON or Heating OFF and Cooling ON or Cooling OFF signal according to user s heating and cooling target temperature Choosing heating cooling thermostat Heating cooling thermostat must have Mode Selection feature to distinguish operation mode Heating cooling thermostat must be able to assi...

Page 47: ... wire as below After connecting go to step 5 Mechanical type thermostat Do not connect wire N as mechanical type thermostat does not require electric power supply Do not connect external electric loads Wire L and N should be used only for operation electric type thermostat Never connect external electric loads such as valves fan coil units etc If connected Main PCB Assembly 1 can be seriously dama...

Page 48: ...Cooling signal from thermostat to PCB H Heating signal from thermostat to PCB Step 5 Find terminal block and connect wire as below Mechanical type thermostat Do not connect wire N as mechanical type thermostat does not require electric power supply Do not connect external electric loads Wire L and N should be used only for operation Electric type thermostat Never connect external electric loads su...

Page 49: ...emperature is only used to control electric heater on off condition The unit does not turn on off according to the setting temperature at the remote controller It turns on off according to the thermostat signal Following features are NOT permitted when thermostat is installed Operating mode cooling heating weather dependent selection Time scheduling Operation On Off 58 78 0 16 57 58 78 0 16 57 58 ...

Page 50: ...ted at the flat place Water quality should be complied with EN 98 83 EC directives As this water tank is sanitary water tank indirect heat exchange do not use anti water freezing treatment like ethylene grycol It is highly recommend to wash out inside of the sanitary water tank after installation It ensures generating clean hot water Near the sanitary water tank there should be water supply and wa...

Page 51: ...ler to determine when the recirculation pump should turn on and turn off is required The operating duration time of the recirculation pump is calculated as follow Duration time minute k V R k 1 2 1 5 is recommended If distance between pump and tank is far then choose high number V Volume of sanitary water tank liter R Water flow rate of pump liter per minute which is determined by pump performance...

Page 52: ... install sanitary water tank For more detail information about installing sanitary water tank please refer installation manual provided with sanitary water tank PHS02060310 LGRTV200E PHS020K0310 LG2RTV200 PHS02060320 LGRTV200VE PHS03060320 LGRTV300VE unit mm ...

Page 53: ... block in the water tank kit BR BL 3 L 4 N How to install sanitary water tank kit Follow below procedures Step 1 Step 5 Step 1 Uncover the water tank kit and locate it on the wall Step 2 Connect the water tank kit to the main power like the below figure 2 Step 3 Connect the water tank kit to the Main PCB assembly1 like the below figure 2 Step 4 Connect power cord of sanitary tank heater It is loca...

Page 54: ...Hotel rooms How to Install Dry Contact Connect CN_DRY with Control Unit To apply power source through Dry Contact PCB Dry Contact Dry contact Controller CN CC DRY CONTACT PCB DRY CONTACT PCB INPUT AC 220V LG does not supply this section LG does not supply this section 4 4 3 3 2 2 1 1 2 2 1 1 RY1 RY2 CN_DRY N L Operation Display Error Check Display Dry contact Controller CN_DRY 4 3 2 4 3 2 1 1 2 2 ...

Page 55: ...arately set the option code of the attached controller on the indoor unit In detail refer to installer setting mode Step 4 The Connection wire does not matter if you change the color of the wire because of non polar Fixing screws 60mm Fixing the Remote Sensor 2 1 1 Choose the place where the average temperature can be measured for the indoor unit operates 2 Avoid direct sunlight 3 Choose the place...

Page 56: ...f Live1 for selecting Flow A Live 2 for selecting Flow B and Neutral for common 2 Flow A means ʻwater flow from the unit to under floor water circuit ʼ 3 Flow B means ʻwater flow from the unit to sanitary water tank ʼ How to wire 3way valve Follow below procedures Step 1 Step 2 Step 1 Uncover front cover of the unit and open the control box Step 2 Find terminal block and connect wire as below W Li...

Page 57: ...ry 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 If correctly wired these temperatures should be almost equivalent if thermal insulation of water pipe is well performed Noise or water pipe vibration while 3way valve operation Due to surging effect or cavitation effect noise or water pipe vibration can ...

Page 58: ... 0 7 0 3 Adjusting pre pressure of expansion vessel is as following Step 1 Refer Volume Height table If installation scene is belong to Case A go to Step 2 Otherwise if it is Case B do nothing pre pressure adjustment is not required Otherwise if it is Case C go to Step 3 Step 2 Adjust pre pressure by following equation Pre pressure bar 0 1 H 0 3 bar where H difference between unit and the highest ...

Page 59: ... up system correctly If not configured correctly improper operation or degrade of performance 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 General information OFF ON 1 2 3 4 5 6 7 8 OFF is selected ON is selected ...

Page 60: ...ter tank Solar thermal system is installed Emergency operation Level 4 4 High temperature cycl e Low temperature cycle External water pump installation information 5 External water pump is NOT installed 5 External water pump is installed Selecting electric heater capacity 6 7 Step 2 capacity is used Electric heater is not used 6 7 6 7 Step 1 capacity is used Thermostat installation information 8 8...

Page 61: ...assified two levels according to the seriousness of the problem Slight Trouble and heavy trouble Slight trouble Sensor trouble Heavy trouble Compressor cycle trouble Option trouble a problem is found for option operation such as water tank heating In this trouble the troubled option is assumed as if it is not installed at the system Emergency operation level When system met trouble it stops operat...

Page 62: ... 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 Therefore sometimes sanitary water heating can be impossible in emergency operation mode When sanitary water is not warming up while emergency operation please check whether the sanitary water sensor and related wiring are connected well or not...

Page 63: ...installer and any installation or change that is carried out by a non certificated person should be responsible for the results In this case free service cannot be provided 58 58 78 78 0 16 0 16 57 57 1 Function Code Value Press Function Setting button for 3 seconds to enter the installer setting mode When you enter the installer setting mode initially function code is displayed on the bottom of t...

Page 64: ...escription Factory use only Value 1 Note Default 01 Range Value 2 Note Default Range 3 Function Remote air sensor connection Description Connection information about remote air sensor Value 1 Note 01 Remote air sensor is not connected and not used 02 Remote air sensor is connected and used Default 1 Range 01 02 Value 2 Note Default Range 4 Function Celsius Fahrenheit switching Description Display ...

Page 65: ... when central controller is installed If thermostat is used value should be changed from 2 to 1 Value 1 Note Default 00 Range 00 FF Value 2 Note Default Range 11 Function Setting air temperature in cooling mode Description Adjusting range of Setting Air Temperature in cooling mode Value 1 Note Upper limit of setting range Default 30 C Range 24 30 C Value 2 Note Lower limit of setting range Default...

Page 66: ...mperature for Sanitary water heating Description Adjusting range of Setting Sanitary Tank Leaving Water Temperature in sanitary water heating mode Value 1 Note Upper Limit of setting range Default 50 C Range 50 80 C Value 2 Note Lower Limit of setting range Default 40 C Range 30 40 C 18 Function Screed drying mode Description After installing water pipes for under floor heating user can select scr...

Page 67: ...ting range Default 10 C Range 20 05 C Value 2 Note Lower Limit of setting range Default 15 C Range 10 20 C 24 Function Setting indoor air temperature range for weather dependent operation Description Setting indoor Max Min temperature for weather dependent operation Value 1 Note Upper limit of setting range Default 21 C Range 20 30 C Value 2 Note Lower limit of setting range Default 16 C Range 16 ...

Page 68: ...gap from target sanitary water temperature This value is required to frequent ON and OFF of water tank heater Default 03 C Range 02 04 C Value 2 Note Determining heating demand priority between sanitary water tank heating and under floor heating Default 00 Range 00 01 Only available when Sanitary Water Tank is installed the disinfection mode will not be operated although Value 1 of Code 26 is set ...

Page 69: ... also regarded as time gap between sanitary tank heating cycle Value 3 Note Default Range 20 95 min step 5 min 20 min This time duration defines how long time sanitary tank heater will not be turned on in sanitary water heating operation This time duration defines how long time sanitary tank heating can be continued 2A Function Miscellaneous setting Description Determine electric heater and water ...

Page 70: ...f remote air sensor is connected but this function code is not set correctly the unit can not be controlled by room air temperature Function Code 04 Celsius Fahrenheit switching Temperature is displayed in Celsius or Fahrenheit Function Code 05 Setting temperature selection The unit can be operated according to air temperature or leaving water temperature The selection for setting temperature as a...

Page 71: ... cold water may not flow to the radiator If cold water enters to the radiator dew generation on the surface of the radiator can be occurred Function Code 13 Setting air temperature in heating mode Determine heating setting temperature range when air temperature is selected as setting temperature Only available when remote air temperature sensor is connected Accessory PQRSTA0 should be installed Al...

Page 72: ...leaving water temperature or room air temperature is much belower than target leaving water temperature or target room air temperature Function Code 22 Setting cut off temperature in cooling mode FCU setting included Determine leaving water temperature when the unit is turned off This function is used fr preventing condensation on the floor in cooling mode Value 1 cut off temperature Value 1 is va...

Page 73: ...utdoor air temperature Value 1 and Value 2 of Function Code 24 range of auto adjustable target room air temperature Value 1 and Value 2 of Function Code 25 range of auto adjustable target leaving water temperature Note Weather dependent operation is applied for heating mode only Value 1 of Function Code 23 Auto Adjustable Target Temperature Outdoor air temperature Temperature profile of Weather de...

Page 74: ...infection mode Vales of Function Code 26 If Value 1 of Function Code 26 is set as ʼ00ʼ that is ʻdisable disinfection modeʼ Value 2 and Value 3 is not used When Value 1 is set as ʼ01ʼ that is ʻenable disinfection modeʼ ʼ Value 2 is displayed at the position of Value 1 and Value 3 is displayed at the position of Value 2 It is due to limited width of the remote controller display Sanitary water heati...

Page 75: ... on when the water temperature is below 70 C Example If Value 2 is set as ʻ0ʼ that means heating priority is on sanitary water heating sanitary water is heated by AWHP compressor cycle and water heater In this case the under floor can not be heated while sanitary water heating On the other hand if the Value 2 is set as ʻ1ʼ that means heating priority is on under floor heating sanitary tank is ONLY...

Page 76: ...ry tank heating stop time of sanitary tank heating and delay time of sanitary tank heater operating Value 1 of Function Code 2B This time duration defines how long time sanitary tank heating can be continued Value 2 of Function Code 2B This time duration defines how long time sanitary tank heating can be stopped It is also regarded as time gap between sanitary tank heating cycle Value 3 of Functio...

Page 77: ...t should be tightened After water charging the pressure gage in front of the unit should indicate 200 250 kPa Do not exceed 300 kPa During water charging air should be taken out through the hole of the air purge If water does not splash out when the tip at the top of the hole is pressed then air purging is not completed yet If well purged the water will splash out like fountain Be careful when tes...

Page 78: ...d indicate 200 250 kPa If the pressure is less than 30 kPa please recharge the water Disassemble strainer Then wash the strainer to make it clean While disassembling the strainer be careful for water flood out Open the switch of the safety valve and check if water is flood out through the drain hose After checking close the safety valve Look and inspect if there is loosen or defected connection on...

Page 79: ...kPa If water does not splash out when the tip at the top of the hole is pressed then air purging is not completed yet If well purged the water will splash out like fountain Check if pressure gage indicates above 30 kPa Check if the expansion tank and pressure gage operates well Flood out the water by opening the switch of the safety valve until pressure gage is indicating 200 250 kPa Replace the e...

Page 80: ...sembly 2 and Main PCB Assembly 1 of the unit The connector for transmission is disconnected The connecting wires are misconnected The communication line is broken Main PCB Assembly 2 is abnormal Main PCB Assembly 1 is abnormal Wire connection between remote controller and Main PCB Assembly 1 should be tight 53 9 PCB program EEPROM fault Electrical or mechanical damage a the EEPROM This error can n...

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