Daikin R-410A Installation Manual
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Daikin R-410A Installation Manual

Daikin R-410A Installation Manual

Edus 39-605a-n
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  • Page 2: Table Of Contents

    EDUS39-605 VRV Installation 1. Center of Gravity ............... 1 2. Foundation Drawing............2 3. REFNET Pipe System ............3 3.1. Layout Example ............3 3.2. Field Refrigerant Piping ..........5 3.3. REFNET Joints and Headers ........6 4. REFNET Pipe System ............8 4.1.

  • Page 3: Center Of Gravity

    Center of Gravity EDUS39-605 1. Center of Gravity RXYQ72/96MTJU REYQ72/96MTJU 4D045330 Installation of Outdoor Units...

  • Page 4: Foundation Drawing

    EDUS39-605 Foundation Drawing 2. Foundation Drawing RXYQ72/96MTJU REYQ72/96MTJU 3D042653A Installation of Outdoor Units...

  • Page 5: Refnet Pipe System

    REFNET Pipe System EDUS39-605 3. REFNET Pipe System Layout Example 3.1.1 Heat Pump System Use of the particular branch fitting appropriate to each individual unit type not only permits the pipes to be laid with ease but also increases the reliability of the system as a whole. Type of Sample systems fitting...
  • Page 6 EDUS39-605 REFNET Pipe System 3.1.2 Heat Recovery System Use of the particular branch fitting appropriate to each individual unit type not only permits the pipes to be laid with ease but also increases the reliability of the system as a whole. Type of Sample systems fitting...

  • Page 7: Field Refrigerant Piping

    REFNET Pipe System EDUS39-605 Field Refrigerant Piping 3.2.1 Heat Pump Series 1. The following materials should be used for all refrigerant piping: Materials: Deoxidized phosphorous seamless copper pipe or equivalent 2. The tips for insulation Both Gas and liquid piping must be insulated. Materials: Glass fiber or heat resistant polyethylene foam Thickness: 1/2 inch or more Heat resistance: Gas pipe : 250°F or more / Liquid pipe : 160°F or more...

  • Page 8: Refnet Joints And Headers

    EDUS39-605 REFNET Pipe System REFNET Joints and Headers 3.3.1 REFNET Joints For gas and liquid branch pipes: Make sure that all branch pipes are fitted so that they branch either horizontally or vertically. When the size of the selected field piping is different from that of the branch pipe, the connecting section should be cut with a pipe cutter as shown in the figure below.

  • Page 9: Figure

    REFNET Pipe System EDUS39-605 Fit cap pipes to the surplus branches if the number of indoor units to be connected is less than the number of branch pipes available. When the size of the selected field piping is different from that of branch pipe cut the connecting section with a pipe cutter as shown in the following figure: When field piping is connected to the B section of the inlet/outlet pipe on the outdoor unit side of the liquid pipe header,cut the B section with a pipe cutter and connect it to the A section.

  • Page 10: Refnet Pipe System

    EDUS39-605 REFNET Pipe System 4. REFNET Pipe System REFNET Joint (Branch Kit) KHRP26M22T (unit:in) Liquid Side Gas Side Insulation Insulation 1-1/2 1-1/2 13-1/3 9-7/8 11-1/2 D3K03622C KHRP26M33T Liquid Side Gas Side Insulation Insulation 1-1/2 1-1/2 10-1/4 12-11/16 14-1/4 11-13/16 D3K03623A KHRP26M72TU Liquid Side Gas Side...
  • Page 11 REFNET Pipe System EDUS39-605 KHRP25M22T Suction gas side Insulation 1-1/2 13-1/3 Discharge gas side Liquid side Insulation Insulation 2-1/3 1-1/2 9-7/8 1-1/2 13-1/3 11-1/2 D3K03626B KHRP25M33T Suction gas side Insulation 1-1/2 12-3/4 14-1/5 Liquid side Discharge gas side Insulation Insulation 14-1/2 10-1/4 1-1/2...

  • Page 12: Refnet Header(Branch Kit)

    EDUS39-605 REFNET Pipe System REFNET Header(Branch Kit) KHRP26M22H (unit:mm) Gas Side Liquid Side Insulation Insulation 1-1/2 4-3/4 2 x 2-1/2 = 5 2-1/2 2 x 2-1/2 = 5 2-1/2 3-3/4 2-1/2 D3K03629C KHRP26M33H Gas Side Liquid Side Insulation Insulation 1-1/2 4-3/4 6-3/4 5 x 2-1/2 = 12-1/2...
  • Page 13 REFNET Pipe System EDUS39-605 KHRP25M33H (unit:mm) Suction gas side Insulation 5-3/4 10-1/2 4-3/4 2 x 2-1/2 = 4-3/4 4-3/4 Insulation Liquid side Discharge gas side Insulation 5 x 2-1/2 = 10-1/2 2-1/2 26-1/3 7 x 2-1/2 = 17-1/2 25-1/2 1-1/2 D3K03633C KHRP25M72H Suction gas side...

  • Page 14: Outdoor Unit Multi-Connection Piping Kit

    EDUS39-605 REFNET Pipe System Outdoor Unit Multi-Connection Piping Kit BHFP26M90U Installation of Outdoor Units...
  • Page 15 REFNET Pipe System EDUS39-605 Installation...
  • Page 16 EDUS39-605 REFNET Pipe System BHFP26M90U To indoor unit 3D050301 3D050302 3D050303 Installation of Outdoor Units...

  • Page 17: Installation

    Installation EDUS39-605 5. Installation RXYQ-M < > < > If installed as a single unit When installed in serial H1≤59 A≥19-5/8 (Pattern 1) (Pattern 1) H1=59+X A≥19-5/8+X/2 H2≤19-5/8 B1≥11-3/4 B2≥3-7/8 ≥3/8 ≥3/4 ≥3/8 ≥3/8 ≥3/8 ≥3/4 H2=19-5/8 + Y B1≥11-3/4+Y/2 B2≥3-7/8+Y/2 (Pattern 2) (Pattern 2)

  • Page 18: Figure

    EDUS39-605 Installation One outdoor unit installed Multiple outdoor units installed figure 9 figure 11 figure 10 One outdoor unit installed Multiple outdoor units installed figure 12 figure 13 Installation of Outdoor Units...
  • Page 19 Installation EDUS39-605 F2 Q1 Q2 A B C F A B C C/H SELECTOR TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT figure 16 F1 F2 F1 F2 F1 F2 A B C F1 F2 F1 F2 Q1 Q2 Q1 Q2 F1 F2 F1 F2...

  • Page 20: Safety Considerations

    Always use a licensed installer or contractor to install this er than the specified refrigerant (R-410A), such as air. product. Improper installation can result in water or refrigerant Any presence of air or other foreign substance in the leakage, electrical shock, fire, or explosion.

  • Page 21: Figure

    Using a charging cylinder may cause the refrigerant to tion the wires so that the electric parts box lid can be deteriorate. securely fastened. Systems using R-410A must be kept clean, dry, and Improper positioning of the electric parts box lid may • tightly installed.

  • Page 22: Figure

    ±10 ±10 Voltage tolerance • The following optional parts are required to install outdoor Recommended units: 60+60 fuses Refrigerant branching kit (For R-410A only: Always use • Compressor an appropriate kit for your system. Phase REFNET header KHRP26M22H KHRP26M33H KHRP26M72H...

  • Page 23: Figure

    Installation EDUS39-605 Branch switch, overcurrent breaker RXYQ144/168/ remote controller Model RXYQ72/96MTJU 192MTJU COOL/HEAT selector Control and fan motor personal computer or radio Type If the electric wave of AM broadcasting is particularly Voltage 208-230 208-230 strong , keep distances of 10 ft. or more and use con- Nominal running cur- 4.5+4.5 duit tubes for power and transmission lines.

  • Page 24: Figure

    EDUS39-605 Installation Secure the unit to its base using foundation bolts. Use four • Use a nut with a resin clip plate to protect the nut tightening • commercially available M12-type foundation bolts, nuts, part from rusting. and washers. Resin clip plate The foundation bolts should be inserted •...

  • Page 25: Figure

    φ19.1 or more for details. 1/2 H or H • Use only R-410A from the solid pink cylinder. 6-2 Connecting the Refrigerant Piping All field piping must be installed by a licensed refrigeration 1. The local branch piping can be connected either forward, or...

  • Page 26: Figure

    EDUS39-605 Installation with the provided insulation, to prevent it from coming into Nitrogen contact with the casing. Taping Manual valve Precautions when knocking out knockout holes: Regulator Avoid damaging the casing • Nitrogen After knocking out the holes, prevent rusting by painting •...
  • Page 27 Installation EDUS39-605 1. To avoid the risk of oil retention in the piping, the piping between the outdoor units must be routed level or slightly Prohibited pattern upward. Pattern 1 to indoor unit to indoor unit Piping between outdoor units to indoor unit Oil remains in the stopping outdoor unit.
  • Page 28 Refrigerant branch kits can only be Outdoor unit capacity type Refrigerant branch kit name indoor capacity index Refrigerant branch kit name used with R-410A. RXYQ72/96 KHRP26M22T, KHRP26M33T < 72 KHRP26M22H (Max. 4 kit) RXYQ144/168/192 KHRP26M22T, KHRP26M33T, KHRP26M72TU KHRP26M33H (Max.

  • Page 29: Stop Valve Operation Procedure

    Do not apply excessive force to the stop valve. Doing so pressure resistance, always use the special specific tools for may break the valve body, as the valve is not a backseat R-410A. type. Always use the special tool. Air tight test and vacuum drying 3.

  • Page 30: Disposal Requirements

    Charge the refrigerant to the liquid pipe in its liquid state. 6-5 Pipe insulation • Since R-410A is a mixed refrigerant, its composition After finishing the leak test and vacuum drying, the pip- changes if charged in a state of gas and normal system ing must be insulated.

  • Page 31: Field Wiring

    Make sure to use installation tools you exclusively use on • Liquid line Gas line Oil-equalizing line R-410A installations to withstand the pressure and to pre- stop valve stop valve stop valve vent foreign materials from mixing into the system.
  • Page 32 Installation EDUS39-605 7-1 Optional parts COOL/HEAT selector electrical charge due to leaked electrical current, which then must be discharged with the grounding. S1S ......Selector switch (fan, cool/heat) S2S ......Selector switch (cool/heat) This unit uses an inverter so be sure to install a ground •...
  • Page 33 EDUS39-605 Installation Crimp-style terminal ground connection may prevent a good ground from being Wire gauge: Small achieved. Wire gauge: Large Cup washer Refer to figure 22. Retain with accessory clamps (3). Electric wiring Round pressure terminal Wiring between units Retain to the electric parts box with the accessory Cut out section clamps (1).
  • Page 34 Installation EDUS39-605 Setting the cool/heat operation Outside the unit, make sure the weak electric wiring (i.e. • for the remote control, between units, etc.) and the strong electric wiring do not pass near each other, keep- 1. Perform cool/heat setting with the remote controller con- ing them at least 50 mm apart.

  • Page 35: Before Operation

    EDUS39-605 Installation Check that wiring lines do not make contact with refrig- During the operation, monitor the outdoor unit operation • • erant piping. status and check for any incorrect wiring. BEFORE OPERATION 1. Turn ON the power to the outdoor Make sure to turn ON the power 6 hours before units and indoor units.

  • Page 36: Caution For Refrigerant Leaks

    The VRV System uses R-410A which is an entirely safe, non- If an outdoor multi Remove the line from the outdoor terminal is connected toxic, non-combustible refrigerant. However, care must be when there is one multi terminals (Q1 and Q2).
  • Page 37 Check the maximum concentration level in accordance maximum concentration level you must revise the system. with steps 1 to 4 below and take whatever action is nec- Please consult your Daikin supplier. essary to comply. 1. Calculate the amount of refrigerant (Ib.) charged to each system separately.

  • Page 38: Reyq-M

    Installation EDUS39-605 REYQ-M < > < > If installed as a single unit When installed in serial H1≤59 A≥19-5/8 (Pattern 1) (Pattern 1) H1=59+X A≥19-5/8+X/2 H2≤19-5/8 B1≥11-3/4 B2≥3-7/8 ≥3/8 ≥3/4 ≥3/8 ≥3/8 ≥3/8 ≥3/4 H2=19-5/8 + Y B1≥11-3/4+Y/2 B2≥3-7/8+Y/2 (Pattern 2) (Pattern 2) ≥2 ≥2...
  • Page 39 EDUS39-605 Installation One outdoor unit installed Multiple outdoor units installed figure 9 figure 10 figure 11 One outdoor unit installed Multiple outdoor units installed figure 12 figure 13 figure 14 Installation of Outdoor Units...
  • Page 40 Installation EDUS39-605 F2 Q1 Q2 A B C F C/H SELECTOR TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT figure 16 IN/D OUT/D.BS IN/D OUT/D.BS IN/D OUT/D.BS A B C F1 F2 F1 F2 Q1 Q2 Q1 Q2 figure 15 figure 17 figure 18 figure 19...
  • Page 41 (R-410A), such as air. cooking device. Exposure to this gas can cause se- vere injury or death.
  • Page 42 If the pressure switch, thermal switch, or other protection low these procedures correctly. device is shorted and operated forcibly, or parts other than those specified by Daikin are used, fire or explosion Since R-410A is a mixed refrigerant, the required ad- •...
  • Page 43 Attached pipe Cooling Heating Option accessory To install the outdoor unit, the following optional parts are also required. • Refrigerant branching kit (For R-410A only: Always use an appropriate kit dedicated for your system.) for 3 pipes REFNET header KHRP25M33H KHRP25M72H...
  • Page 44 Dimensions Crankcase inch 64 × 48-7/8 64 × 48-7/8 × 30-1/8) + (64 × 33+33 (33+33)+(33+33) H×W×D heater × 30-1/8 30-1/8 48-7/8 × 30-1/8) Refrigerant type R-410A R-410A Mass 666+666 Refrigerant Refrigerant 27.3 27.3+27.3 charge suction gas inch 1-1/8 pipe...

  • Page 45: Inspecting And Handling The Unit

    EDUS39-605 Installation 1-5 Electrical specifications (1) 6. Make sure that the air inlet and outlet of the unit are not positioned towards the main wind direction. Frontal wind REYQ72/ REYQ144/168/ Model will disturb the operation of the unit. If necessary, use a 96MTJU 192MTJU windscreen to block the wind.

  • Page 46: Unpacking And Placing The Unit

    Make sure to use installation tools (gauge manifold charge 1. Prepare a water drainage channel around the founda- hose, etc.) that are exclusively used for R-410A installa- tion to condensate waste water from around the unit. tions to withstand the pressure and to prevent foreign mate- 2.
  • Page 47 EDUS39-605 Installation Vacuum pump should be 2-stage with a non-return valve Suction gas side accessory pipe (1) (2) (3) using the following precautions: Discharge gas side accessory pipe (1)(2)(3) 1. Make sure the pump oil does not flow oppositely into the Suction gas line system while the pump is not working.
  • Page 48 Installation EDUS39-605 φ φ Be sure to perform a nitrogen blow when brazing. REYQ144MTJU ..5/8” --> 3/4” • φ φ Brazing without performing nitrogen replacement or REYQ168MTJU ..5/8” --> φ φ releasing nitrogen into the piping will create large quan- REYQ192MTJU ..
  • Page 49 EDUS39-605 Installation Cautions for installation of multiple outdoor units: 1. The piping between the outdoor units must be routed level Prohibited pattern or slightly upward to avoid the risk of oil detention to the pip- ing side. to indoor unit Pattern 1 to indoor unit to indoor unit...
  • Page 50 Refrigerant branch kit name indoor capacity index Refrigerant branch kits can only be Outdoor unit capacity type Refrigerant branch kit name In case of 3 pipes In case of 2 pipes used with R-410A. REYQ72/96 KHRP25M33T < 72 KHRP26M22H or KHRP26M33H KHRP25M33H REYQ144/168/192 KHRP25M72TU ≤...

  • Page 51: Leak Test And Vacuum Drying

    To prevent entry of any impurities and to ensure sufficient φ 3/4” Discharge gas line stop valve pressure resistance, always use the specific tools for R-410A. Opening the stop valve: Air tight test and vacuum drying 1. Remove the cap and turn the valve counterclockwise with Air tight test: Make sure to use nitrogen gas.

  • Page 52: Additional Refrigerant Charge

    Charge the refrigerant to the liquid pipe in its liquid state. • local and national regulations. Since R-410A is a mixed refrigerant, its composition Pipe insulation changes if charged in a state of gas. To ensure normal sys- After finishing the leak test and vacuum drying, the piping tem operation, the refrgerant must be charged in its liquid must be insulated.

  • Page 53: Power Circuit And Cable Requirements

    Make sure to use installation tools you exclusively use on P-board (A1P) in the outdoor unit to stop the additional • R-410A installations to withstand the pressure and to pre- refrigerant charge operation. vent foreign materials from mixing into the system.
  • Page 54 Installation EDUS39-605 Fuse NOTE COOL / HEAT selector When using residual current operated circuit breakers, be Remote controller • sure to use a high-speed type 200mA rated residual oper- Outdoor unit ating current. BS unit Select the power supply cable in accordance with relevant Indoor unit •...
  • Page 55 EDUS39-605 Installation Outdoor unit P.C. board (A1P) WARNING BS unit A BS unit B Use only specified wire and connect wires to terminals • Last BS unit tightly. Be careful that wires do not place external stress Indoor unit on terminals. Keep wires in neat order so as to not to ob- Remote controller struct other equipment.
  • Page 56 Installation EDUS39-605 Transmission line: Connect it using a conduit in the Over-tightening the terminal screws may break them and • • knockout hole on the right as shown in the following fig- ure: Electric box Left side Right side (A1P) Lock nut Conduit Conduit...
  • Page 57 EDUS39-605 Installation age of 500V DC between power terminals and earth. Never The check operation does not provide any means of check- • use the megatester for the transmission wiring. ing the indoor units individually. For that purpose, perform 4. Installation Date: normal operation using the remote controller after the Be sure to keep record of the installation date on the check operation.
  • Page 58 R-410A. The installer must prevent leakage according to local regulations or standards. The VRV System uses R-410A as refrigerant. R-410A itself is an entirely safe, non-toxic, non-combustible refrigerant Compliance with local regulations and standards must be fol-...
  • Page 59 The refrigerant maximum concentration level must not be exceeded. when installation results in an excess of the maximum concentration level it is necessary to reconfigure the sys- tem. Please consult your Daikin supplier. Installation of Outdoor Units...
  • Page 60 Installation EDUS39-605 10.5 External Static Pressure Setting How to set the unit to high ESP. (1) Standard external static pressure for VRV is 29.4 Pa (0.12”Wg). (2) High external static pressure of 58.8Pa (0.24”Wg) is available by field setting as show In this case a kind of sound proof device should be considered because of increasing the operation sound.
  • Page 61 EDUS39-605 Installation Installation of Outdoor Units...
  • Page 62 AMERICAS 1645 Wallace Drive, Suite 110 Carrollton, TX75006 info@daikinac.com www.daikinac.com May 2007 EDUS39-605A-N Printed in U.S.A. 05/2007...

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