Daikin RXP20L2V1B User Manual Download

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Installer reference guide

R32 split series

English

Installer reference guide

R32 split series

RXP20L2V1B
RXP25L2V1B
RXP35L2V1B

ARXP20L2V1B
ARXP25L2V1B
ARXP35L2V1B

RXF20A2V1B
RXF25A2V1B
RXF35A2V1B

Summary of Contents for RXP20L2V1B

Page 1: ...Installer reference guide R32 split series English Installer reference guide R32 split series RXP20L2V1B RXP25L2V1B RXP35L2V1B ARXP20L2V1B ARXP25L2V1B ARXP35L2V1B RXF20A2V1B RXF25A2V1B RXF35A2V1B ...

Page 2: ...ng the refrigerant piping 16 6 5 3 To check for leaks 16 6 5 4 To perform vacuum drying 16 6 6 Charging refrigerant 17 6 6 1 About charging refrigerant 17 6 6 2 About the refrigerant 17 6 6 3 Precautions when charging refrigerant 17 6 6 4 To determine the additional refrigerant amount 17 6 6 5 To determine the complete recharge amount 18 6 6 6 To charge additional refrigerant 18 6 6 7 To fix the f...

Page 3: ...tely after operation It could be too hot or too cold Give it time to return to normal temperature If you must touch it wear protective gloves Do NOT touch any accidental leaking refrigerant WARNING Provide adequate measures to prevent that the unit can be used as a shelter by small animals Small animals that make contact with electrical parts can cause malfunctions smoke or fire CAUTION Do NOT tou...

Page 4: ...area defined in table below A m2 This applies to Indoor units without a refrigerant leakage sensor in case of indoor units with refrigerant leakage sensor consult the installation manual Outdoor units installed or stored indoors e g winter garden garage machinery room Pipework in unventilated spaces To determine the minimum floor area 1 Determine the total refrigerant charge in the system factory ...

Page 5: ...ant leakage If refrigerant gas leaks ventilate the area immediately Possible risks Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency Toxic gas may be produced if refrigerant gas comes into contact with fire DANGER RISK OF EXPLOSION Pump down Refrigerant leakage If you want to pump down the system and there is a leakage in the refrigerant circuit Do NOT use the uni...

Page 6: ... category III condition MUST be installed in the fixed wiring WARNING ONLY use copper wires Make sure the field wiring complies with the applicable legislation All field wiring MUST be performed in accordance with the wiring diagram supplied with the product NEVER squeeze bundled cables and make sure they do NOT come in contact with the piping and sharp edges Make sure no external pressure is appl...

Page 7: ...s Safety instructions that you MUST read before installing About the documentation What documentation exists for the installer About the box How to unpack the units and remove their accessories About the units and options How to identify the units Possible combinations of units and options Preparation What to do and know before going on site Installation What to do and know to install the system C...

Page 8: ... chapter contains information about Identification of the outdoor unit 4 2 Identification NOTICE When installing or servicing several units at the same time make sure NOT to switch the service panels between different models 4 2 1 Identification label Outdoor unit Location 5 Preparation 5 1 Overview Preparation This chapter describes what you have to do and know before going on site It contains in...

Page 9: ...delines 1200 150 150 50 300 300 mm mm a b b a a Air outlet b Air inlet NOTICE Do NOT stack the units on each other Do NOT hang the unit on a ceiling Strong winds 18 km h blowing against the outdoor unit s air outlet causes short circuit suction of discharge air This may result in deterioration of the operational capacity frequent frost acceleration in heating operation disruption of operation due ...

Page 10: ... 1 Refrigerant piping requirements INFORMATION Also read the precautions and requirements in the General safety precautions chapter Piping material Phosphoric acid deoxidised seamless copper Piping diameter Liquid piping Ø6 4 mm 1 4 Gas piping Ø9 5 mm 3 8 Piping temper grade and thickness Outer diameter Ø Temper grade Thickness t a 6 4 mm 1 4 Annealed O 0 8 mm t Ø 9 5 mm 3 8 Annealed O a Depending...

Page 11: ...cally consists of the following stages 1 Opening the units 2 Mounting the outdoor unit 3 Connecting the refrigerant piping 4 Checking the refrigerant piping 5 Charging refrigerant 6 Connecting the electrical wiring 7 Finishing the outdoor unit installation 6 2 Opening the units 6 2 1 About opening the units At certain times you have to open the unit Example When connecting the refrigerant piping W...

Page 12: ...0 mm of free space below the unit Additionally make sure the unit is positioned at least 100 mm above the maximum expected level of snow In this case it is recommended to construct a pedestal 300 4 7 0 1 9 2 1 9 2 mm 300 100 a a Maximum snowfall height If the unit is installed on brackets to the wall install the unit as follows 250 300 100 mm a a Maximum snowfall height ...

Page 13: ...tall a waterproof plate within 150 mm of the bottom side of the unit in order to prevent water from getting into the unit and to avoid drain water dripping see the following figure 6 3 6 To prevent the outdoor unit from falling over In case the unit is installed in places where strong wind can tilt the unit take following measure 1 Prepare 2 cables as indicated in the following illustration field ...

Page 14: ...e refrigerant piping is NOT connected and the stop valve is open when the compressor is run air will be sucked in This will cause abnormal pressure in the refrigeration cycle which may result in equipment damage and even injury 6 4 3 Guidelines when connecting the refrigerant piping Take the following guidelines into account when connecting pipes Coat the flare inner surface with ether oil or este...

Page 15: ... sure there is no gap To open close the stop valve 1 Remove the stop valve cover 2 Insert a hexagonal wrench liquid side 4 mm gas side 4 mm into the valve stem and turn the valve stem Counterclockwise to open Clockwise to close 3 When the stop valve CANNOT be turned any further stop turning The valve is now open closed To handle the stem cap The stem cap is sealed where indicated with the arrow Do...

Page 16: ...e sure to use a recommended bubble test solution from your wholesaler Do not use soap water which may cause cracking of flare nuts soap water may contain salt which absorbs moisture that will freeze when the piping gets cold and or lead to corrosion of flared joints soap water may contain ammonia which causes a corrosive effect between the brass flare nut and the copper flare 1 Charge the system w...

Page 17: ... 2 About the refrigerant This product contains fluorinated greenhouse gases Do NOT vent gases into the atmosphere Refrigerant type R32 Global warming potential GWP value 675 NOTICE In Europe the greenhouse gas emissions of the total refrigerant charge in the system expressed as tonnes CO2 equivalent is used to determine the maintenance intervals Follow the applicable legislation Formula to calcula...

Page 18: ... of the total refrigerant charge in the system expressed as tonnes CO2 equivalent is used to determine the maintenance intervals Follow the applicable legislation Formula to calculate the greenhouse gas emissions GWP value of the refrigerant Total refrigerant charge in kg 1000 2 Fix the label on the inside of the outdoor unit near the gas and liquid stop valves 6 7 Connecting the electrical wiring...

Page 19: ...e outdoor unit 1 Remove the service cover See 6 2 2 To open the outdoor unit on page 11 2 Strip insulation 20 mm from the wires a b a Strip wire end to this point b Excessive strip length may cause electrical shock or leakage 3 Open the wire clamp 4 Connect the interconnection cable and power supply as follows 3 5 Tighten the terminal screws securely We recommend using a Phillips screwdriver 6 Ins...

Page 20: ...is document and the applicable legislation between the outdoor unit and the indoor unit Drainage Make sure drainage flows smoothly Possible consequence Condensate water might drip The indoor unit receives the signals of the user interface The specified wires are used for the interconnection cable 7 4 Checklist during commissioning To perform an air purge To perform a test run 7 5 To perform a test...

Page 21: ...bout solving problems based on symptoms Before troubleshooting Carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring 10 2 Precautions when troubleshooting WARNING When carrying out an inspection on the switch box of the unit ALWAYS make sure that the unit is disconnected from the mains Turn off the respective circuit breaker W...

Page 22: ...ill running and the stop valve is open during pump down air will be sucked into the system Compressor breakdown or damage to the system can result due to abnormal pressure in the refrigerant cycle Pump down operation will extract all refrigerant from the system into the outdoor unit 1 Remove the valve lid from the liquid stop valve and the gas stop valve 2 Carry out the forced cooling operation Se...

Page 23: ...LEAKCIRCUIT BREAKER AC CN E HA HE HL HN HR MR _A MR _B S U V W X A K R_ CONNECTION CONNECTOR Q L OVERLOAD PROTECTOR D V D DIODE Q M THERMOSWITCH DB DIODEBRIDGE R RESISTOR DS DIP SWITCH R T THERMISTOR E H HEATER RC RECEIVER F U FU FOR CHARACTERISTICS REFER TOPCBINSIDE YOUR UNIT FUSE S C LIMIT SWITCH FG CONNECTOR FRAMEGROUND S L FLOAT SWITCH H HARNESS S NPH PRESSURESENSOR HIGH H P LED V L PILOT LAMP...

Page 24: ...or application explaining how to install configure and maintain it Operation manual Instruction manual specified for a certain product or application explaining how to operate it Maintenance instructions Instruction manual specified for a certain product or application which explains if relevant how to install configure operate and or maintain the product or application Accessories Labels manuals ...

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Daikin RXP20L2V1B, Installer'S Reference Manual

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