Subscribe to Our Youtube Channel
Related Manuals for Daikin VRV IV+ REYQ8U7Y1B
Summary of Contents for Daikin VRV IV+ REYQ8U7Y1B
- Page 1 Installation and operation manual VRV IV+ heat recovery REYQ8U7Y1B REYQ10U7Y1B REYQ12U7Y1B REYQ14U7Y1B REYQ16U7Y1B REYQ18U7Y1B REYQ20U7Y1B Installation and operation manual English VRV IV+ heat recovery REMQ5U7Y1B...
- Page 2 2P546224-3A...
- Page 3 2P546224-3A...
- Page 4 Table of contents 8.2.15 Symptom: The display shows "88"....... 14 Table of contents 8.2.16 Symptom: The compressor in the outdoor unit does not stop after a short heating operation ....... 14 8.2.17 Symptom: The inside of an outdoor unit is warm even when the unit has stopped ........
-
Page 5: Table Of Contents
Field setting components ..........35 Daikin website (publicly accessible). 16.1.3 To access the field setting components...... 35 ▪ The full set of latest technical data is available on the Daikin 16.1.4 To access mode 1 or 2 ..........36 Business Portal (authentication required). - Page 6 3 User safety instructions WARNING WARNING During tests, NEVER pressurize the product with a ▪ All wiring MUST be performed by an authorised pressure higher than the maximum allowable pressure (as electrician and MUST comply with the applicable indicated on the nameplate of the unit). legislation.
- Page 7 3 User safety instructions ▪ Batteries are marked with the following symbol: General WARNING If you are NOT sure how to operate the This means that the batteries may NOT be mixed with unsorted unit, contact your installer. household waste. If a chemical symbol is printed beneath the symbol, this chemical symbol means that the battery contains a WARNING heavy metal above a certain concentration.
- Page 8 4 About the system WARNING WARNING Never touch the air outlet or the Stop operation and shut off the horizontal blades while the swing flap power if anything unusual occurs is in operation. Fingers may become (burning smells etc.). caught or the unit may break down. Leaving the unit running under such circumstances may cause breakage, CAUTION...
- Page 9 5 User interface Depending on the type of outdoor unit which is chosen, some 6.2.2 About cooling, heating, fan only, and functionality will or will not exist. It will be indicated throughout this automatic operation operation manual when certain features have exclusive model rights or not.
- Page 10 6 Operation 6.2.5 To operate the system (WITH cool/heat 6.3.2 To use the dry program (WITHOUT cool/ changeover remote control switch) heat changeover remote control switch) Overview of the changeover remote control switch To start FAN ONLY/AIR CONDITIONING 1 Press the operation mode selector button on the user interface SELECTOR SWITCH several times and select (program dry operation).
- Page 11 7 Maintenance and service Only the master user interface can select heating or cooling mode. Corner units Ceiling suspended units Maintenance and service Wall-mounted units NOTICE NEVER inspect or service the unit by yourself. Ask a qualified service person to perform this work. For the following conditions, a micro computer controls the air flow direction which may be different from the display.
- Page 12 8 Troubleshooting ▪ If repairs to the product are necessary within the warranty period, Malfunction Measure contact your dealer and keep the warranty card at hand. If the system does not ▪ Check if there is no power failure. Wait operate at all.
- Page 13 8 Troubleshooting Main code Contents Main code Contents Transmission malfunction between main PCB and sub Abnormal user interface - indoor communication PCB (indoor) Faulty wiring to outdoor/outdoor Heat exchanger thermistor malfunction (indoor; liquid) Abnormal main-sub user interface communication Heat exchanger thermistor malfunction (indoor; gas) System mismatch.
- Page 14 9 Relocation 8.2.5 Symptom: The fan direction does not 8.2.11 Symptom: Noise of air conditioners correspond to the setting (Outdoor unit) The fan direction does not correspond with the user interface When the tone of operating noise changes. This noise is caused by display.
- Page 15 11.1 About ▪ Front connection 19.1 ID Øa is part of Daikin's wider commitment to reduce our ID Øb environmental footprint. With we want to create a circular 22.2 economy for refrigerants. One of the actions to achieve this, is the reuse of reclaimed refrigerant in VRV units produced and sold in ▪...
- Page 16 12 About the units and options 6 Remove the transportation stay (e) as shown in the figure below. 7 Tighten the bolt (c) again. (12.3 N·m) (12.3 N·m) d e c About the units and options 12.1 About the outdoor unit This installation manual concerns the VRV IV, full inverter driven, heat recovery system.
- Page 17 If the unit has to operate for 5 days in this area with When closing the electrical component box cover, make high humidity (>90%), Daikin recommends to install the sure that the sealing material on the lower back side of the...
- Page 18 14 Piping installation Piping installation 14.1 Preparing refrigerant piping 14.1.1 Refrigerant piping requirements NOT allowed NOTICE Allowed (* = preferred installation) ▪ The height of the foundation must at least be 150 mm from the Refrigerant R410A requires strict cautions for keeping the floor.
- Page 19 14 Piping installation Indoor unit Outdoor unit Piping outer diameter size (mm) capacity type (HP) Size up Liquid pipe Suction gas High pipe pressure/low HP class Liquid piping outer diameter size (mm) pressure gas 9.5 → 12.7 pipe 22.2 19.1 12+14 12.7 →...
- Page 20 14 Piping installation Indoor unit capacity index 3 pipes 290≤x<640 KHRQ23M64H ≥640 KHRQ23M75H If the pipe size above the refnet header is Ø34.9 or more, KHRQ23M75H is required. To indoor unit INFORMATION Oil collects to the outmost outdoor unit when the system stops Maximum 8 branches can be connected to a header.
- Page 21 14 Piping installation Front connection ▪ Make sure that the total length of the piping connected to the joint Right-side connection is absolute straight for more than 500 mm. Only if a straight field For side connections, the knockout hole on the bottom plate should piping of more than 120 mm is connected, more than 500 mm of be removed: straight section can be ensured.
- Page 22 14 Piping installation ▪ After handling the service port, make sure to tighten the service port cover securely. For the tightening torque, refer to the table below. ▪ Check for refrigerant leaks after tightening the service port cover. Tightening torques Stop valve Tightening torque (N•m) (when opening or size (mm)
- Page 23 14 Piping installation DANGER: RISK OF ELECTROCUTION NOTICE Make sure that all indoor units connected to the outdoor unit are powered on. NOTICE Wait to apply setting [2‑21] until the outdoor unit has finished the initialisation. Leak test and vacuum drying Checking the refrigerant piping involves: ▪...
- Page 24 14 Piping installation High pressure/low pressure gas line stop valve 2 Check that, with the vacuum pump turned off, the target Valve A vacuum is maintained for at least 1 hour. Valve B Valve C 3 Should you fail to reach the target vacuum within 2 hours or Valve D maintain the vacuum for 1 hour, the system may contain too Valve...
- Page 25 14 Piping installation A flow chart is available which gives an overview of the possibilities NOTICE and actions to be taken (see "To charge refrigerant: Flow If the power of some units is turned off, the charging chart" [ 4 27]). procedure cannot be finished properly.
- Page 26 14 Piping installation Inch piping Metric piping Piping Weight factor Piping Weight factor Ø22.2 mm 0.37 Ø22 mm 0.35 Installation and operation manual REYQ8~20+REMQ5U7Y1B VRV IV+ heat recovery 4P546222-1B – 2020.10...
- Page 27 14 Piping installation 14.4.4 To charge refrigerant: Flow chart refrigerant" [ 4 29]. For more information, see "To charge Pre-charging refrigerant Step 1 p < p > Calculate additional refrigerant charge amount: R (kg) Step 2+3 R410A • Close valves C, D and A •...
- Page 28 14 Piping installation Charging refrigerant << Continuation of previous page R>Q Step 5 p < p > • Connect valve A to the refrigerant charge port (d) • Open all outdoor unit stop valves R410A Step 6 Proceed with automatic or manual charge Automatic charge Manual charge Step 6a...
- Page 29 14 Piping installation << Continuation of previous page Heating charging Cooling charging ("t22" startup control) ("t02" startup control) ("t23" waiting for stable heating) ("t03" waiting for stable cooling) "t23" is flashing "t03" is flashing • Push BS2 within 5 minutes •...
- Page 30 14 Piping installation p < p > NOTICE ▪ The refrigerant charging port is connected to the piping inside the unit. The unit's internal piping is already factory charged with refrigerant, so be careful when connecting the charge hose. R410A ▪...
-
Page 31: Electrical Installation
15 Electrical installation INFORMATION Code Cause Solution Other — Close valve A ▪ When a malfunction is detected during the procedure malfunction immediately. Confirm the (e.g, in case of closed stop valve), a malfunction code code malfunction code and take will be displayed. -
Page 32: Safety Device Requirements
15 Electrical installation ▪ EN/IEC 61000‑3‑11 provided that the system impedance Z INFORMATION less than or equal to Z at the interface point between the user's Multi units are standard combinations. supply and the public system. ▪ EN/IEC 61000‑3‑11 European/International Technical 15.2 Safety device requirements... -
Page 33: To Route And Fix The Transmission Wiring
15 Electrical installation 5~12 HP 14~20 HP Example: Field power supply (with earth leakage protector) Main switch Earth connection Outdoor unit Indoor unit User interface BS unit Cool/heat selector Circuit breaker Fuse Power supply 3N~ 50 Hz Power supply 1~ 50 Hz Earth wiring Fix to the indicated plastic brackets using field supplied clamping 15.4 To route and fix the transmission... -
Page 34: To Finish The Transmission Wiring
15 Electrical installation ▪ The wiring for the other systems must be connected to the F1/F2 15.8 To connect the power supply (Out-Out) terminals of the PCB in the outdoor unit to which the interconnecting wiring for the indoor units is connected. The power supply MUST be clamped to the plastic bracket using field supplied clamp material to prevent external force being applied ▪... -
Page 35: Configuration
16 Configuration 2 Turn ON the power and leave it on for 6 hours. See also: Result: The compressor will heat up and evaporate any 2" [ 4 36] ▪ "To access mode 1 or refrigerant in the compressor. 1" [ 4 36] ▪... -
Page 36: To Access Mode 1 Or 2
16 Configuration 16.1.5 To use mode 1 NOTICE Make sure that all outside panels, except for the service Mode 1 is used to set basic settings and to monitor the status of the cover on the electrical component box, are closed while unit. -
Page 37: Mode 2: Field Settings
16 Configuration [1‑2] [2‑0] Description Shows the status of power consumption limitation operation. Slave unit for Cool/Heat operation when outdoor units are connected in multiple system [1‑2] Description combination Unit is currently not operating under power It is necessary to use the optional external control adaptor for consumption limitations. -
Page 38: To Connect The Pc Configurator To The Outdoor Unit
— commissioning instructions in this chapter, a general In case the outdoor unit is installed in the commissioning checklist is also available on the Daikin highest position (indoor units are installed on a Business Portal (authentication required). lower position than outdoor units) and the... -
Page 39: Precautions When Commissioning
17 Commissioning After installation and once the field settings are defined, the installer Pipe size and pipe insulation is obliged to verify correct operation. Therefore a test run MUST be Be sure that correct pipe sizes are installed and that the performed according to the procedures described below. -
Page 40: To Perform A Test Run
18 Hand-over to the user 17.4 To perform a test run 17.5 Correcting after abnormal completion of the test run 1 Close all front panels in order to not let it be the cause of misjudgement (except the electrical component box inspection The test operation is only completed if there is no malfunction code opening service cover). - Page 41 19 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 High pressure switch was activated Check stop valve situation or (S1PH, S2PH) – main PCB (X2A, X3A) abnormalities in (field) piping or airflow over air cooled coil. ▪...
- Page 42 19 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 Discharge temperature sensor Check connection on PCB or actuator. malfunction (R21T): open circuit – main PCB (X19A) Discharge temperature sensor Check connection on PCB or actuator. malfunction (R21T): short circuit - main PCB (X19A) Discharge temperature sensor Check connection on PCB or actuator.
- Page 43 19 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 Transmission outdoor unit - inverter: Check connection. INV1 transmission trouble - main PCB (X20A, X28A, X40A) Transmission outdoor unit - inverter: Check connection. FAN1 transmission trouble - main PCB (X20A, X28A, X40A) Transmission outdoor unit - inverter: Check connection.
-
Page 44: Technical Data
Technical data ▪ A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of latest technical data is available on the Daikin Business Portal (authentication required). 20.1 Service space: Outdoor unit... - Page 45 20 Technical data Layout A+B+C+D INFORMATION Possibility 1 Possibility 2 Further specifications can be found in the technical engineering data. a≥10 mm a≥50 mm a≥200 mm b≥300 mm b≥100 mm b≥300 mm c≥10 mm c≥50 mm d≥500 mm d≥500 mm a≥10 mm a≥50 mm a≥200 mm b≥300 mm b≥100 mm b≥300 mm c≥10 mm c≥50 mm d≥500 mm d≥500 mm e≥20 mm e≥100 mm e≥400 mm...
-
Page 46: Piping Diagram: Outdoor Unit
20 Technical data 20.2 Piping diagram: Outdoor unit Piping diagram: 5~12 HP Stop valve (liquid) Service port Stop valve (high pressure/low pressure) Stop valve (gas) Charge port Installation and operation manual REYQ8~20+REMQ5U7Y1B VRV IV+ heat recovery 4P546222-1B – 2020.10... - Page 47 20 Technical data Piping diagram: 14~20 HP Stop valve (liquid) Service port Stop valve (high pressure/low pressure) Stop valve (gas) Charge port REYQ8~20+REMQ5U7Y1B Installation and operation manual VRV IV+ heat recovery 4P546222-1B – 2020.10...
-
Page 48: Wiring Diagram: Outdoor Unit
20 Technical data Charge port / Service port For 14~20 HP: When using the optional accessory, refer to the installation manual of the optional accessory. Stop valve For 14~20 HP: Colours (see below). Filter Symbols: Check valve Field wiring Pressure relief valve Terminal block Connector Thermistor... - Page 49 20 Technical data Q1LD (A1P) Earth current detector BS1~BS3 (A1P) Push button switch (MODE, SET, RETURN) Q1RP (A1P) Phase reversal detect circuit C* (A3P) Capacitor R24 (A4P) Resistor (current sensor) DS1, DS2 DIP switch (A1P) R300 (A3P) Resistor (current sensor) E1HC Crankcase heater Thermistor (air)
-
Page 50: Disposal
21 Disposal SEG1~SEG3 7-segment display (A1P) Current sensor V1D (A3P, A6P) Diode V1R (A3P, A4P, Power module A6P, A7P) Connector Terminal block X1M (A1P) Terminal block (control) Electronic expansion valve (heat exchanger upper) Electronic expansion valve (subcool heat exchanger) Electronic expansion valve (heat exchanger lower) Electronic expansion valve (receiver gas) Electronic expansion valve (inverter cooling) Electronic expansion valve (auto charge) - Page 52 4P546222-1 B 0000000Z 4P546222-1B 2020.10 Verantwortung für Energie und Umwelt...
Need help?
Do you have a question about the VRV IV+ REYQ8U7Y1B and is the answer not in the manual?
Questions and answers