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Daikin RXZ25NV1B, Service Manual

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Daikin RXZ25NV1B Service Manual Download Page 3

Si001362E

Removal Procedure

1

Table of Contents

1. Humidifier Unit.........................................................................................2
2. Heater Assembly.....................................................................................4
3. Humidifying Rotor Motor .........................................................................6
4. Hygroscopic Fan Motor ...........................................................................7
5. Humidifier Fan Assembly / Damper Assembly........................................8
6. Discharge Grille / Suction Grilles ..........................................................10
7. Outer Panels / Outdoor Fan / Fan Motor...............................................11
8. Duct Assembly / Right Side Panel ........................................................14
9. Electrical Box ........................................................................................16
10. PCB......................................................................................................19
11. Reactor / Thermistor Assembly / Partition Plate ..................................21
12. Sound Blankets ....................................................................................24
13. Four Way Valve / Electronic Expansion Valve .....................................25
14. Compressor..........................................................................................28

Note:

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The illustrations may be slightly different depending on the model.

Summary of Contents for RXZ25NV1B

Page 1: ...REMOVAL PROCEDURE S E R V I C E M A N U A L Outdoor Unit Inverter Pair Type 2 5 3 5 5 0 kW Class Si001362E...

Page 2: ...Service Manual Removal Procedure Outdoor Unit zHeat Pump RXZ25NV1B RXZ35NV1B RXZ50NV1B...

Page 3: ...amper Assembly 8 6 Discharge Grille Suction Grilles 10 7 Outer Panels Outdoor Fan Fan Motor 11 8 Duct Assembly Right Side Panel 14 9 Electrical Box 16 10 PCB 19 11 Reactor Thermistor Assembly Partitio...

Page 4: ...the stop valve cover 1 2 3 Remove the 4 screws and remove the top panel Remove the screw of the stop valve cover Slide the stop valve cover down and remove it R19564 Humidifier unit discharge air out...

Page 5: ...the humidifier unit When reassembling the humidifier unit do not forget to connect the relay connectors When reassembling the humidifier unit make sure to connect the duct assembly and the lower damp...

Page 6: ...rews and remove the duct adsorption side 3 Release the harnesses from the 3 hooks When reassembling these harnesses must be fit in the following hooks Humidifying rotor motor Damper motor Limit switch...

Page 7: ...remove the heater assembly 5 Unfasten the projection of the heater assembly from the slit on the support plate When reassembling insert the projection of the heater assembly to the slit on the support...

Page 8: ...difying rotor 1 Release the hygroscopic fan motor lead wire from the hook 2 Remove the bell mouth 3 Remove the humidifying rotor 2 Remove the humidifying rotor motor 1 2 Disconnect the humidifying rot...

Page 9: ...e the hygroscopic fan Nut size M6 When reassembling align the mark of the fan with the D cut section of the motor shaft 1 Remove the nut and removethehygroscopic fan 2 Remove the hygroscopic fan motor...

Page 10: ...utes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the 6 screws 2 Unfasten the 2 hooks while bending the right side panel 3 Remove the humidifie...

Page 11: ...humidifying fan assembly should be replaced as an assembly set Disassembling of the assembly can cause a noise 6 Disconnect the damper motor lead wire 7 Turn the damper assembly back and disconnect t...

Page 12: ...nts 1 Remove the discharge grille upper 1 Remove the 2 screws and remove the discharge grille upper 2 Remove the suction grille adsorption side 1 Remove the screw and remove the suction grille adsorpt...

Page 13: ...the humidifier unit relay harness from the fixing point on the shield plate Lift and remove the shield plate Remove the 6 screws of the front panel 4 Unfasten the 5 hooks and remove the front panel Wh...

Page 14: ...emove the nut and remove the outdoor fan Nut size M6 When reassembling align the mark of the outdoor fan with the D cut section of the motor shaft When reassembling put the fan motor lead wire through...

Page 15: ...and release the fan motor lead wire 2 Remove the 4 screws and remove the fan motor Be sure to remove the lower screws first If the upper screws are removed first the fan motor may tilt or fall becaus...

Page 16: ...oints 1 Disconnect the wires 1 2 Remove the screws and disconnect the connecting wire and power supply wire Remove the 3 screws and remove the wire fixture 2 Remove the duct assembly 1 Remove the scre...

Page 17: ...the outdoor temperature thermistor Remove the 3 screws on the right side panel Remove the earth ground screw 4 5 Unfasten the 4 hooks and remove the right side panel Remove the liquid piping and the...

Page 18: ...g work Step Procedure Points 1 Remove the electrical box cover 1 Release the harnesses for the humidifier unit from the hook 2 3 Remove the screw on the electrical box cover Unfasten the 2 hooks of th...

Page 19: ...S70 fan motor 3 Disconnect the connectors S20 S80 S91 S20 electronic expansion valve coil S80 four way valve coil S91 liquid pipe thermistor 4 Disconnect the relay harness for the compressor 5 6 Disc...

Page 20: ...sleeve with the label on the reactor right yellow left red You can connect 2 harnesses of the same color into either upper or lower 3 Remove the electrical box 1 Remove the screw in front of the elec...

Page 21: ...sassembling work Step Procedure Points 1 2 3 Remove the screw and remove the terminal board Remove the screw and detach the earth ground wire Release the harnesses from the hook 4 Detach the 2 clamps...

Page 22: ...d to one another S20 electronic expansion valve coil S21 humidifying rotor motor humidifying thermistor S22 damper motor S40 overload protector S70 fan motor S72 humidifier fan motor S80 four way valv...

Page 23: ...work Step Procedure Points 1 Remove the reactor 1 Remove the screw and remove the reactor 2 Release the outdoor heat exchanger thermistor 1 Remove the tape from the outdoor heat exchanger thermistor h...

Page 24: ...he discharge pipe thermistor Be careful not to lose the fixture for the discharge pipe thermistor When reassembling meet the edge of the thermistor and the fixture 4 Release the liquid pipe thermistor...

Page 25: ...Partition Plate Removal Procedure 23 5 Remove the partition plate 1 Remove the 2 screws and remove the partition plate 2 The partition plate is fixed by a hook on the bottom frame Step Procedure Poin...

Page 26: ...ng work Step Procedure Points 1 Remove the sound blanket top Since the piping ports on the sound blanket are torn easily remove the blanket carefully 2 Remove the sound blanket outer 3 4 Open the soun...

Page 27: ...0 C 248 F For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry Note Before working make sure that the refrigerant gas is empty in the circuit Be...

Page 28: ...the terminal cover and the protecting bushing Disconnect the compressor lead wires and detach the overload protector 6 7 Heat up the 4 brazed parts of the four way valve in the order of a b c d Remove...

Page 29: ...onic Expansion Valve Removal Procedure 27 8 Heat up the 2 brazed parts of the electronic expansion valve in the order of e f 9 Remove the electronic expansion valve Step Procedure Points R19639 Electr...

Page 30: ...mpty in the circuit Be sure to apply nitrogen replacement when heating up the brazed part Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit When withdraw...

Page 31: ...Procedure 29 4 Remove the 2 nuts 5 Heat up the 2 brazed parts of the discharge side and disconnect 6 Heat up the 2 brazed parts of the suction side of the accumulator and disconnect Step Procedure Poi...

Page 32: ...Compressor Si001362E 30 Removal Procedure 7 Lift the compressor and remove it Step Procedure Points R19644 Compressor...

Page 33: ...Revision History Month Year Version Revised contents 03 2014 Si001362E First edition...

Page 34: ...supplied or specified by Daikin Ask a qualified installer or contractor to install those parts and accessories Use of unauthorised parts and accessories or improper installation of parts and accessori...

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