Daikin HXHD125A7V1B Installation Manual
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Daikin HXHD125A7V1B Installation Manual

Daikin HXHD125A7V1B Installation Manual

Hxhd125 series
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INSTALLATION MANUAL
VRVIII system indoor unit
system indoor unit
HXHD125A7V1B

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Summary of Contents for Daikin HXHD125A7V1B

  • Page 1 INSTALLATION MANUAL VRVIII system indoor unit system indoor unit HXHD125A7V1B...
  • Page 2 3PW60973-3A...

  • Page 3: Table Of Contents

    Installation manual VRVIII system indoor unit HXHD125A7V1B 11. Maintenance and service ............41 ONTENTS Page 11.1. Maintenance activities ..............41 1. Definitions .................. 2 Checks ..................42 11.2. Important information regarding the refrigerant used....42 1.1. Meaning of warnings and symbols ..........2 11.3.

  • Page 4: Definitions

    Warnings in this manual are classified according to their severity and Equipment which needs to be installed according to instructions in probability of occurrence. this manual, but which are not supplied by Daikin. DANGER Indicates an imminently hazardous situation which, if not...

  • Page 5: Introduction

    An optional EKRP1AHTA demand PCB can be connected to the The indoor units are designed to work in heating mode at indoor indoor unit. This PCB is needed when Daikin room thermostat ambient temperatures from 5°C to 30°C. EKRTR or EKRTW is installed or when multiple set point control is During heating operation, the unit can heat up the water to used, and provides the communication with the indoor unit.

  • Page 6: Accessories

    16 Stop valves 17 Piping fixation clamps DANGER: ELECTRICAL SHOCK "2. General Safety precautions" on page DANGER: DO NOT TOUCH PIPING AND INTERNAL PARTS "2. General Safety precautions" on page Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 7: Main Components In The Unit

    12 Heating plate heat exchanger 13 Cascade plate heat exchanger 14 R410A HP/LP gas connection 15 R410A liquid connection 16 Switchbox 17 Service port R134a high 18 Service port R134a low HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 8 K1S 3-way valve 13 Heating heat exchanger K2E Electronic expansion valve (R134a) 14 Drain port M1P Pump 15 Expansion vessel Q2L Thermistor protector water piping 16 Air purge S1PH High pressure switch Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 9: Switch Box Main Components

    fixed. It is utmost important for these kind of 20 Interface relay K1A installations to know the parameters mentioned above. 21 Interface relay K2A 22 Interface relay K3A 23 Wiring bridges HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 10: General Precautions Concerning Water Circuit

    3-way valve (delivered as accessory with the tank). Check that the total water volume in the installation, excluding the internal water volume of the unit, is 20 l minimum. Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 11: Application Examples

    11 Radiator (field supply) 12 Electronic expansion valve 13 By-pass valve (field supply) 14 Indoor unit refrigerant stop valve C1 Remote controller (master) C2 Remote controller (slave) A Installation place B Living room HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 12: Application Example With Several Heat Emitters

    ■ Do not install the unit in places with high humidity (e.g. bathroom) (max humidity (RH)=85%). Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 13: Dimensions And Service Space

    14 Power supply wiring intake (knock-out hole Ø37) 15 Knock-out hole for refrigerant piping and water piping 16 Levelling feet 17 Liquid stop valve Ø9.52 solder (R410A) 18 HP/LP stop valve Ø12.7 solder (R410A) HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 14: Service Space Of The Unit

    Before installation of the unit to its final position, it is advised to connect the water flexible pipes and refrigerant pipes to the unit (delivered as accessory). ■ Take out all accessories from the indoor unit. Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 15 flux contains fluorine, it will deteriorate the refrigerant oil. INFORMATION The back plate is not shown on the illustration, but it is not needed to take out the back plate for the installation. HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 16: Installation On Final Installation Position

    Close the sound panel(s) and decoration panel(s) which will be on the wall side and for which fixation is not possible anymore after the unit is put on its final location. Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 17: Fix The Indoor Unit Refrigerant Connections

    Put the sound bottom plate at the bottom of the unit and fix it Mounting of the manometer against a wall (the 2 with the appropriate screws. screws are field supply). HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 18: Leak Test And Vacuuming Drying R410A Circuit

    40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 80°C water temperature 65°C water temperature 35°C water temperature Never change the pre-pressure of the system to a value lower than 0.3 bar Pre-pressure (bar) System water volume (l) Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 19: Setting The Pre-Pressure Of The Expansion Vessel

    Therefore, the pre-pressure should only be adjusted by a licensed installer. INFORMATION To set the pre-pressure, the expansion vessel needs to be accessed from the front or the right. HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 20: Electrical Wiring Work

    ≤75 A. (2) European/International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-voltage systems with input current >16 A and ≤75 A per phase. Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 21: Internal Wiring - Parts Table

    R4T......Returning water thermistor R5T......Leaving water thermistor (heating) R6T......Discharge thermistor R7T......Liquid thermistor R134a R8T......Fin thermistor R9T......Leaving water thermistor (cooling) R10T......Liquid thermistor (cooling) R11T......Suction thermistor (cooling) HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 22: Requirements

    NOTICE Do not push or place redundant cable length in the unit. Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 23: Connection

    ■ Select a master and a slave remote controller by switching the SS1 selector switch. Slave Master Only the remote controller set as master can work as room thermostat. HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 24: Connection To A Benefit Kwh Rate Power Supply

    Be careful not to pinch the wiring when attaching. power supply is continuous, then stand-by power consumption of the inverter PCB is possible. First begin fitting from the clips at the bottom. Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 25 It is therefore important to leave the auto restart function enabled. Refer to field setting "[8] Option setup, "[8-01]" on page 29 in the chapter "9.3. Field settings" on page HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 26: Start-Up And Configuration

    10 Power supply voltage Check the power supply voltage on the local supply panel. The voltage must correspond to the voltage on the identification label of the unit. Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 27: Procedure

    field settings as there are mentioned in the "9.8. Field setting table" on page These field settings are not applicable and may not be changed! HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 28 When both setback function and schedule timer are enabled Temperature set point Setback function Room temperature Time Leaving water temperature Temperature set point ■ [0-04] Setting not available Room temperature Leaving water temperature Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 29 It is advised to set the start time of automatic storage during night [1-01] on the moment that the setback function starts [2-01]. Refer to "[5] Automatic setback and disinfection set point" on page 28 for temperature set points. HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 30 See also "[2] Automatic setback function" on page 27 for more information about setback operation. ■ [5-02] Leaving water setback temperature. ■ [5-03] Room setback temperature. ■ [5-04] Setting not available Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 31 [7-02] See chapter "9.7. Multiple set point control" on page ■ [7-03] See chapter "9.7. Multiple set point control" on page ■ [7-04] See chapter "9.7. Multiple set point control" on page HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 32 INFORMATION [A-04] See chapter "9.7. Multiple set point control" on page The maximum setting temperature for domestic hot water can be changed with field setting [b-04]. Other settings are fixed Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 33 finished! See also "11.3. Vacuuming/recovery maintenance refrigerant side" on page ■ [E-01] Setting not available. ■ [E-02] Setting not available. ■ [E-03] Setting not available. HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 34: Simultaneous Demand Of Space Heating And Domestic Water Heating

    Maximum operation time for domestic water heating (initial 30 minutes [d-01]) Interval minimum stop time for domestic water heating (initial 15 minutes [d-02]) Maximum operation time for domestic water heating (initial 30 minutes [d-01]) Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 35 Maximum operation time for domestic water heating (initial 30 minutes [d-01]) Interval minimum stop time for domestic water heating (initial 15 minutes [d-02]) Maximum operation time for domestic water heating (initial 30 minutes [d-01]) HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 36 3°C lower as set point and set point J is reached. (b) The maximum operation time is only valid when room temperature is more than 0.5°C lower as set point and set point J is reached. Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 37 (1) finished (1) are in relation with each other (2) are in relation with each other (*) Storage set point can be automatic value if [b-02]=1 HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 38: Multiple Set Point Control

    The configuration of pattern A allows 2 space heating set points and one (same as in the classic design) domestic hot water set point. Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 39 Enter the temperature multiple set point 2: [A-04] (see below) towards other appliances as well, etc.) Configuration example: ■ Daikin does not offer any temperature reducing device (TRD). This system only provides the Field possibility to use multiple set points.

  • Page 40: Field Setting Table

    Not applicable. Do not change the default value. — — — Not applicable. Do not change the default value. 0 (OFF) — — — Status: low noise level — Status: freeze-up prevention — Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 41 — — Heat recovery allowance setting — — Not applicable. Do not change the default value. — — — Not applicable. Do not change the default value. — — — HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 42: Final Check And Test Run

    Otherwise, the user interface will return to normal operation. To resolve the error codes, see "12.5. Error codes" on page Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 43: Contents 11. Maintenance And Service

    fire. NOTICE Play it safe! Touch a metal part by hand (such as the stop valve) in order to eliminate static electricity and to protect the PCB before performing service. HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 44: Checks

    Therefore, an additional multilingual fluorinated green- house gases label is supplied with the unit. Sticking instructions are illustrated on the backside of that label. Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 45: Vacuuming/Recovery And Maintenance On Refrigerant Side

    (see installation manual of outdoor unit) Open stop valve(s) (if applicable) Restart system (a) (1) and (2) refers to the legend of the figure in next chapter "System overview" on page HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 46: System Overview

    If the pressure relief valve is not working correctly and is to be replaced, always reconnect the flexible hose attached to the pressure relief valve, to avoid water dripping out of the unit! Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 47: Draining The System

    (refer to "Setting Remote controller thermostat Contact your local dealer. the pre-pressure of the expansion thermistor error vessel" on page 17). Compressor PCB error Contact your local dealer. HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584-1A – 11.2010...

  • Page 48: Unit Specifications

    3.15 Address duplication error Contact your local dealer. Transmission problem with Contact your local dealer. outdoor unit QA wiring problem Contact your local dealer. Address error Contact your local dealer. Installation manual HXHD125A7V1B VRVIII system indoor unit 4PW62584-1A – 11.2010...
  • Page 52 4PW62584-1A 11.2010...

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