Daikin REYQ8-48PY1B User manual

SiENBE37-701
Service
Manual
REYQ8-48PY1B
R-410 Heat Recovery 50HZ

SiENBE37-701
Table of Contents i
R-410A Heat Recovery
50Hz
1. Introduction ............................................................................................ vi
1.1 Safety Cautions ....................................................................................... vi
1.2 PREFACE ................................................................................................x
Part 1 General Information ........................................................... 1
1. Model Names of Indoor/Outdoor Units....................................................2
2. External Appearance...............................................................................3
2.1 Indoor Units ..............................................................................................3
2.2 Outdoor Units ...........................................................................................4
3. Combination of Outdoor Units.................................................................5
4. Model Selection.......................................................................................6
Part 2 Specifications .................................................................... 9
1. Specifications ........................................................................................10
1.1 Outdoor Units .........................................................................................10
1.2 Indoor Units ............................................................................................21
1.3 BS Units .................................................................................................54
Part 3 Refrigerant Circuit ........................................................... 55
1. Refrigerant Circuit .................................................................................56
1.1 REYQ8P, 10P, 12P ................................................................................56
1.2 REYQ14P, 16P ......................................................................................58
1.3 REMQ8PY1 (Multi 8HP).........................................................................60
1.4 REMQ10PY1, 12PY1 (Multi 10, 12HP) ..................................................62
1.5 REMQ14PY1, 16PY1 (Multi 14, 16HP) ..................................................64
1.6 BS Unit Functional Parts ........................................................................66
1.7 Indoor Units ............................................................................................67
2. Functional Parts Layout ........................................................................68
2.1 REYQ8P, 10P, 12P ................................................................................68
2.2 REYQ14P, 16P ......................................................................................69
2.3 REMQ8P ................................................................................................70
2.4 REMQ10P, 12P......................................................................................71
2.5 REMQ14P, 16P......................................................................................72
3. Refrigerant Flow for Each Operation Mode...........................................73
Part Function.......................................................................... 101
1. Function General.................................................................................102
1.1 Symbol .................................................................................................102
1.2 Operation Mode....................................................................................104
2. Basic Control.......................................................................................105
2.1 Normal Operation .................................................................................105
2.2 Compressor PI Control.........................................................................106

SiENBE37-701
ii Table of Contents
2.3 Electronic Expansion Valve PI Control.................................................114
2.4 Step Control of Outdoor Unit Fans .......................................................114
2.5 Outdoor Unit Fan Control in Cooling Operation ...................................115
2.6 Heat Exchanger Control .......................................................................116
3. Special Control....................................................................................117
3.1 Startup Control .....................................................................................117
3.2 Large Capacity Start Up Control (Heating)...........................................119
3.3 Oil Return Operation ............................................................................120
3.4 Defrost Operation .................................................................................124
3.5 Pump-down Residual Operation ..........................................................126
3.6 Standby ................................................................................................128
3.7 Stopping Operation ..............................................................................129
4. Protection Control ...............................................................................130
4.1 High Pressure Protection Control.........................................................130
4.2 Low Pressure Protection Control..........................................................132
4.3 Discharge Pipe Protection Control .......................................................134
4.4 Inverter Protection Control ...................................................................135
4.5 STD Compressor Overload Protection.................................................137
5. Other Control.......................................................................................138
5.1 Backup Operation.................................................................................138
5.2 Demand Operation ...............................................................................138
5.3 Heating Operation Prohibition ..............................................................138
6. Outline of Control (Indoor Unit) ...........................................................139
6.1 Operation Flow Chart ...........................................................................139
6.2 Thermostat Control...............................................................................141
6.3 Drain Pump Control..............................................................................145
6.4 Control of Electronic Expansion Valve .................................................147
6.5 Freeze Prevention ................................................................................148
6.6 Heater Control (Optional PC Board KRP1B...is required.) ...................149
6.7 List of Swing Flap Operations ..............................................................150
6.8 Hot Start Control (In Heating Operation Only)......................................151
6.9 Louver Control for Preventing Ceiling Dirt............................................152
Part 5 Test Operation ............................................................... 153
1. Test Operation ....................................................................................154
1.1 Installation Process ..............................................................................154
1.2 Procedure and Outline .........................................................................155
1.3 Operation when Power is Turned On ...................................................187
2. Outdoor Unit PC Board Layout ...........................................................188
3. Field Setting ........................................................................................189
3.1 Field Setting from Remote Control .......................................................189
3.2 Field Setting from Outdoor Unit............................................................202
Part 6 Troubleshooting ............................................................. 229
1. Symptom-based Troubleshooting .......................................................232
2. Troubleshooting by Remote Control ...................................................235
2.1 The INSPECTION / TEST Button.........................................................235
2.2 Self-diagnosis by Wired Remote Control .............................................236
2.3 Self-diagnosis by Infrared Remote Control ..........................................237
2.4 Inspection Mode ...................................................................................240

SiENBE37-701
Table of Contents iii
2.5 Remote Control Service Mode .............................................................241
2.6 Test Run Mode.....................................................................................243
2.7 Remote Control Self-Diagnosis Function .............................................243
3. Troubleshooting by Indication on the Remote Control ........................250
3.1 “A0” Indoor Unit: Error of External Protection Device ...........................250
3.2 “A1” Indoor Unit: PC Board Defect.........................................................251
3.3 “A3” Indoor Unit: Malfunction of Drain Level Control System (S1L) ......252
3.4 “A6” Indoor Unit: Fan Motor (M1F) Lock, Overload...............................254
3.5 “A7” Indoor Unit: Malfunction of Swing Flap Motor (M1S) .....................258
3.6 “A9” Indoor Unit: Electronic Expansion Valve
Malfunction / Dust Clogging260
3.7 ........ “A9” Indoor Unit: Malfunction of Electronic Expansion Valve Coil262
3.8 “AF” Indoor Unit: Drain Level above Limit..............................................264
3.9 “AJ” Indoor Unit: Malfunction of Capacity Determination Device ..........265
3.10 “C4” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger 266
3.11 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes..........267
3.12 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air.........268
3.13 “CJ” Indoor Unit: Malfunction of Thermostat Sensor in Remote Control .....
269
3.14 “E1” Outdoor Unit: PC Board Defect ......................................................270
3.15 “E3” Outdoor Unit: Actuation of High Pressure Switch ..........................271
3.16 “E4” Outdoor Unit: Actuation of Low Pressure Sensor ..........................273
3.17 “E5” Outdoor Unit: Inverter Compressor Motor Lock.............................275
3.18 “E6” Outdoor Unit: STD Compressor Motor Overcurrent/Lock..............277
3.19 “E7” Outdoor Unit: Malfunction of Outdoor Unit Fan Motor ...................278
3.20 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion
Valve (Y1E~Y5E)281
3.21 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature ..................283
3.22 “F6” Outdoor Unit: Refrigerant Overcharged.........................................285
3.23 “F9” Outdoor Unit: Malfunction of BS Unit Electronic Expansion Valve 286
3.24 “H7” Outdoor Unit: Abnormal Outdoor Fan Motor Signal.......................288
3.25 “H9” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air.....290
3.26 “J2” Outdoor Unit: Current Sensor Malfunction ....................................291
3.27 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31, 32T,
33T)292
3.28 “J4” Outdoor Unit: Malfunction of Temperature Sensor for Heat Exchanger
Gas (R2T or R11T)293
3.29 “J5” Outdoor Unit: Malfunction of Thermistor (R8T or R10T) for Suction
Pipe294
3.30 “J6” Outdoor Unit: Malfunction of Thermistor (R4T or R12T) for Outdoor
Unit Heat Exchanger295
3.31 “J7” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 1 (R6T), (R9T) or
(R14T)296
3.32 “J8” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 2 (R7T or R15T)
297
3.33 “J9” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe
Thermistor (R5T or R13T)298
3.34 “JA” Outdoor Unit: Malfunction of High Pressure Sensor......................299
3.35 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor.......................301
3.36 “L1” Outdoor Unit: Defective Inverter PC Board ....................................303
3.37 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise
305

SiENBE37-701
iv Table of Contents
3.38 “L5” Outdoor Unit: Momentary Overcurrent of Inverter Compressor.....308
3.39 “L8” Outdoor Unit: Momentary Overcurrent of Inverter Compressor.....310
3.40 “L9” Outdoor Unit: Inverter Compressor Starting Failure ......................312
3.41 “LC” Outdoor Unit: Malfunction of Transmission between Inverter and Con-
trol PC Board315
3.42 “P1” Outdoor Unit: Inverter Over-Ripple Protection ...............................318
3.43 “P4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise
Sensor320
3.44 “PJ” Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or
Faulty Combination of PC Board322
3.45 “U0” Outdoor Unit: Gas Shortage Alert .................................................324
3.46 “U1” Reverse Phase, Open Phase.........................................................326
3.47 “U2” Outdoor Unit: Power Supply Insufficient or Instantaneous Failure 327
3.48 “U3” Outdoor Unit: Check Operation not Executed ...............................330
3.49 “U4” Malfunction of Transmission between Indoor Units.......................331
3.50 “U5” Indoor Unit: Malfunction of Transmission between Remote Control
and Indoor Unit334
3.51 “U7” Outdoor Unit: Transmission Failure (Across Outdoor Units) .........335
3.52 “U8” Indoor Unit: Malfunction of Transmission between Main and Sub Re-
mote Controls341
3.53 “U9” Indoor Unit: Malfunction of Transmission between Indoor and Outdoor
Units in the Same System342
3.54 “UA” Improper Combination of Indoor and Outdoor Units, Indoor Units and
Remote Control343
3.55 “UC” Address Duplication of Centralized Controller...............................349
3.56 “UE” Malfunction of Transmission between Centralized Controller and In-
door Unit350
3.57 “UF” System is not Set yet.....................................................................353
3.58 “UH” Malfunction of System, Refrigerant System Address Undefined...354
4. Troubleshooting (OP: Central Remote Control) ..................................356
4.1 “M1” PC Board Defect ............................................................................356
4.2 “M8” Malfunction of Transmission between Optional Controllers for Cen-
tralized Control357
4.3 “MA” Improper Combination of Optional Controllers for Centralized Control
358
4.4 “MC” Address Duplication, Improper Setting ..........................................360
5. Troubleshooting (OP: Unified ON/OFF Controller) .............................361
5.1 Operation Lamp Blinks .........................................................................361
5.2 Display “Under Centralized Control” Blinks (Repeats Single Blink) .....363
5.3 Display “Under Centralized Control” Blinks (Repeats Double Blink) ....366
Part 7 Appendix......................................................................... 383
1. Piping Diagrams..................................................................................384
1.1 Outdoor Unit .........................................................................................384
1.2 Indoor Unit............................................................................................389
1.3 BS Unit .................................................................................................394
2. Wiring Diagrams for Reference...........................................................395
2.1 Outdoor Unit .........................................................................................395
2.2 Field Wiring ..........................................................................................400
2.3 Indoor Unit............................................................................................403
2.4 BS Unit .................................................................................................417

SiENBE37-701
Table of Contents v
3. List of Electrical and Functional Parts .................................................418
3.1 Outdoor Unit .........................................................................................418
3.2 Indoor Side ...........................................................................................422
4. Option List ...........................................................................................428
4.1 Option List of Controllers......................................................................428
4.2 Option Lists (Outdoor Unit)...................................................................430
5. Piping Installation Point.......................................................................431
5.1 Piping Installation Point ........................................................................431
5.2 The Example of a Wrong Pattern .........................................................432
6. Example of connection........................................................................434
7. Thermistor Resistance / Temperature Characteristics........................441
8. Pressure Sensor .................................................................................443
9. Method of Checking the Inverter’s Power Transistors and Diode Modules
444
9.1 Method of Checking the Inverter’s Power Transistors and Diode Modules
444
Part 8 Precautions for New Refrigerant (R-410A) .................... 447
1. Precautions for New Refrigerant (R-410A) .........................................448
1.1 Outline ..................................................................................................448
1.2 Refrigerant Cylinders............................................................................450
1.3 Service Tools........................................................................................451
Index ............................................................................................. i
Drawings & Flow Charts ................................................................ v

SiENBE37-701 Introduction
vi
1. Introduction
1.1 Safety Cautions
Cautions and
Warnings
!Be sure to read the following safety cautions before conducting repair work.
!The caution items are classified into “ Warning” and “ Caution”. The “ Warning”
items are especially important since they can lead to death or serious injury if they are not
followed closely. The “ Caution” items can also lead to serious accidents under some
conditions if they are not followed. Therefore, be sure to observe all the safety caution items
described below.
!About the pictograms
This symbol indicates an item for which caution must be exercised.
The pictogram shows the item to which attention must be paid.
This symbol indicates a prohibited action.
The prohibited item or action is shown inside or near the symbol.
This symbol indicates an action that must be taken, or an instruction.
The instruction is shown inside or near the symbol.
!After the repair work is complete, be sure to conduct a test operation to ensure that the
equipment operates normally, and explain the cautions for operating the product to the
customer
1.1.1 Caution in Repair
Warning
Be sure to disconnect the power cable plug from the plug socket before
disassembling the equipment for a repair.
Working on the equipment that is connected to a power supply can cause an
electrical shook.
If it is necessary to supply power to the equipment to conduct the repair or
inspecting the circuits, do not touch any electrically charged sections of the
equipment.
If the refrigerant gas discharges during the repair work, do not touch the
discharging refrigerant gas.
The refrigerant gas can cause frostbite.
When disconnecting the suction or discharge pipe of the compressor at the
welded section, release the refrigerant gas completely at a well-ventilated
place first.
If there is a gas remaining inside the compressor, the refrigerant gas or
refrigerating machine oil discharges when the pipe is disconnected, and it can
cause injury.
If the refrigerant gas leaks during the repair work, ventilate the area. The
refrigerant gas can generate toxic gases when it contacts flames.
The step-up capacitor supplies high-voltage electricity to the electrical
components of the outdoor unit.
Be sure to discharge the capacitor completely before conducting repair work.
A charged capacitor can cause an electrical shock.
Do not start or stop the air conditioner operation by plugging or unplugging the
power cable plug.
Plugging or unplugging the power cable plug to operate the equipment can
cause an electrical shock or fire.

Introduction SiENBE37-701
vii
1.1.2 Cautions Regarding Products after Repair
Caution
Do not repair the electrical components with wet hands.
Working on the equipment with wet hands can cause an electrical shock.
Do not clean the air conditioner by splashing water.
Washing the unit with water can cause an electrical shock.
Be sure to provide the grounding when repairing the equipment in a humid or
wet place, to avoid electrical shocks.
Be sure to turn off the power switch and unplug the power cable when cleaning
the equipment.
The internal fan rotates at a high speed, and cause injury.
Do not tilt the unit when removing it.
The water inside the unit can spill and wet the furniture and floor.
Be sure to check that the refrigerating cycle section has cooled down
sufficiently before conducting repair work.
Working on the unit when the refrigerating cycle section is hot can cause burns.
Use the welder in a well-ventilated place.
Using the welder in an enclosed room can cause oxygen deficiency.
Warning
Be sure to use parts listed in the service parts list of the applicable model and
appropriate tools to conduct repair work. Never attempt to modify the
equipment.
The use of inappropriate parts or tools can cause an electrical shock,
excessive heat generation or fire.
When relocating the equipment, make sure that the new installation site has
sufficient strength to withstand the weight of the equipment.
If the installation site does not have sufficient strength and if the installation
work is not conducted securely, the equipment can fall and cause injury.
Be sure to install the product correctly by using the provided standard
installation frame.
Incorrect use of the installation frame and improper installation can cause the
equipment to fall, resulting in injury.
For integral units
only
Be sure to install the product securely in the installation frame mounted on a
window frame.
If the unit is not securely mounted, it can fall and cause injury.
For integral units
only
Be sure to use an exclusive power circuit for the equipment, and follow the
technical standards related to the electrical equipment, the internal wiring
regulations and the instruction manual for installation when conducting
electrical work.
Insufficient power circuit capacity and improper electrical work can cause an
electrical shock or fire.

SiENBE37-701 Introduction
viii
1.1.3 Inspection after Repair
Be sure to use the specified cable to connect between the indoor and outdoor
units. Make the connections securely and route the cable properly so that there
is no force pulling the cable at the connection terminals.
Improper connections can cause excessive heat generation or fire.
When connecting the cable between the indoor and outdoor units, make sure
that the terminal cover does not lift off or dismount because of the cable.
If the cover is not mounted properly, the terminal connection section can cause
an electrical shock, excessive heat generation or fire.
Do not damage or modify the power cable.
Damaged or modified power cable can cause an electrical shock or fire.
Placing heavy items on the power cable, and heating or pulling the power cable
can damage the cable.
Do not mix air or gas other than the specified refrigerant (R-410A) in the
refrigerant system.
If air enters the refrigerating system, an excessively high pressure results,
causing equipment damage and injury.
If the refrigerant gas leaks, be sure to locate the leak and repair it before
charging the refrigerant. After charging refrigerant, make sure that there is no
refrigerant leak.
If the leak cannot be located and the repair work must be stopped, be sure to
perform pump-down and close the service valve, to prevent the refrigerant gas
from leaking into the room. The refrigerant gas itself is harmless, but it can
generate toxic gases when it contacts flames, such as fan and other heaters,
stoves and ranges.
When replacing the coin battery in the remote control, be sure to disposed of
the old battery to prevent children from swallowing it.
If a child swallows the coin battery, see a doctor immediately.
Warning
Caution
Installation of a leakage breaker is necessary in some cases depending on the
conditions of the installation site, to prevent electrical shocks.
Do not install the equipment in a place where there is a possibility of
combustible gas leaks.
If a combustible gas leaks and remains around the unit, it can cause a fire.
Be sure to install the packing and seal on the installation frame properly.
If the packing and seal are not installed properly, water can enter the room and
wet the furniture and floor.
For integral units
only
Warning
Check to make sure that the power cable plug is not dirty or loose, then insert
the plug into a power outlet all the way.
If the plug has dust or loose connection, it can cause an electrical shock or fire.
If the power cable and lead wires have scratches or deteriorated, be sure to
replace them.
Damaged cable and wires can cause an electrical shock, excessive heat
generation or fire.
Do not use a joined power cable or extension cable, or share the same power
outlet with other electrical appliances, since it can cause an electrical shock,
excessive heat generation or fire.

Introduction SiENBE37-701
ix
1.1.4 Using Icons
Icons are used to attract the attention of the reader to specific information. The meaning of each
icon is described in the table below:
1.1.5 Using Icons List
Caution
Check to see if the parts and wires are mounted and connected properly, and
if the connections at the soldered or crimped terminals are secure.
Improper installation and connections can cause excessive heat generation,
fire or an electrical shock.
If the installation platform or frame has corroded, replace it.
Corroded installation platform or frame can cause the unit to fall, resulting in
injury.
Check the grounding, and repair it if the equipment is not properly grounded.
Improper grounding can cause an electrical shock.
Be sure to measure the insulation resistance after the repair, and make sure
that the resistance is 1 Mohm or higher.
Faulty insulation can cause an electrical shock.
Be sure to check the drainage of the indoor unit after the repair.
Faulty drainage can cause the water to enter the room and wet the furniture
and floor.
Icon Type of
Information
Description
Note:
Note A “note” provides information that is not indispensable, but may
nevertheless be valuable to the reader, such as tips and tricks.
Caution
Caution A “caution” is used when there is danger that the reader, through
incorrect manipulation, may damage equipment, loose data, get
an unexpected result or has to restart (part of) a procedure.
Warning
Warning A “warning” is used when there is danger of personal injury.
Reference A “reference” guides the reader to other places in this binder or
in this manual, where he/she will find additional information on a
specific topic.

SiENBE37-701 Introduction
x
1.2 PREFACE
Thank you for your continued patronage of Daikin products.
This is the new service manual for Daikin's Year 2007 VRVIII series Heat Recovery System.
Daikin offers a wide range of models to respond to building and office air conditioning needs.
We are confident that customers will be able to find the models that best suit their needs.
This service manual contains information regarding the servicing of VRVIII series R-410A Heat
Recovery System.
Jan., 2008
After Sales Service Division

Introduction SiENBE37-701
xi

SiENBE37-701
General Information 1
Part 1
General Information
1. Model Names of Indoor/Outdoor Units....................................................2
2. External Appearance...............................................................................3
2.1 Indoor Units ..............................................................................................3
2.2 Outdoor Units ...........................................................................................4
3. Combination of Outdoor Units.................................................................5
4. Model Selection.......................................................................................6

Model Names of Indoor/Outdoor Units SiENBE37-701
2General Information
1. Model Names of Indoor/Outdoor Units
Indoor Units
Note: FXDQ has following 2 Series, as show below.
FXDQ-P, NAVE: with Drain Pump
MA, NA: RoHS Directive models; Specifications, Dimensions and other functions are not changed compared
with M, N type.
BS Units
Outdoor Units
Normal Series
Type Model Name Power
Supply
Roundflow Ceiling
Mounted Cassette FXFQ 20P 25P 32P 40P 50P 63P 80P 100P 125P — — VE
600×600 4-Way Blow
Ceiling Mounted
Cassette FXZQ20M25M32M40M50M—————— V1
2-Way Blow Ceiling
Mounted Cassette FXCQ 20M 25M 32M 40M 50M 63M 80M — 125M — — V3
Ceiling Mounted
Corner Cassette FXKQ—25MA32MA40MA—63MA—————
VE
Slim Concealed Ceiling
Unit
FXDQ-
PVE 20P25P32P————————
FXDQ-
NAVE ———40NA50NA63NA—————
Concealed Ceiling Unit
(Small) FXDQ20M25M————————— V3
Concealed Ceiling Unit FXSQ 20M 25M 32M 40M 50M 63M 80M 100M 125M — —
Concealed Ceiling Unit
(Large) FXMQ — — — 40MA 50MA 63MA 80MA 100MA 125MA 200MA 250MA
VE
Ceiling Suspended Unit FXHQ — — 32MA — — 63MA — 100MA — — —
Wall Mounted Unit FXAQ20MA25MA32MA40MA50MA63MA—————
Floor Standing Unit FXLQ20MA25MA32MA40MA50MA63MA—————
Concealed Floor
Standing Unit FXNQ20MA25MA32MA40MA50MA63MA—————
Type Model Name Power Supply
Heat Recovery Series BSVQ 100P 160P 250P V1
Series Model Name Power Supply
Heat Recovery REYQ
8P 10P 12P 14P 16P 18P 20P 22P 24P
Y126P 28P 30P 32P 34P 36P 38P 40P 42P
44P 46P 48P
Power Supply: VE : 1φ, 220~240V, 50Hz, 1φ, 220V, 60Hz
V1 : 1φ, 220~240V, 50Hz
V3 : 1φ, 230V, 50Hz
Y1 : 3φ, 380~415V, 50Hz

SiENBE37-701 External Appearance
General Information 3
2. External Appearance
2.1 Indoor Units
Roundflow Ceiling Mounted Cassette
FXFQ20P
FXFQ25P
FXFQ32P
FXFQ40P
FXFQ50P
FXFQ63P
FXFQ80P
FXFQ100P
FXFQ125P
Concealed Ceiling Unit
(Large)
FXMQ40MA
FXMQ50MA
FXMQ63MA
FXMQ80MA
FXMQ100MA
FXMQ125MA
FXMQ200MA
FXMQ250MA
FXMQ40~125M
FXMQ200 · 250M
600×600 4-Way Blow
Ceiling Mounted Cassette
FXZQ20M
FXZQ25M
FXZQ32M
FXZQ40M
FXZQ50M
Ceiling Suspended Unit
FXHQ32MA
FXHQ63MA
FXHQ100MA
2-Way Blow Ceiling Mounted Cassette
FXCQ20M
FXCQ25M
FXCQ32M
FXCQ40M
FXCQ50M
FXCQ63M
FXCQ80M
FXCQ125M
Wall Mounted Unit
FXAQ20MA
FXAQ25MA
FXAQ32MA
FXAQ40MA
FXAQ50MA
FXAQ63MA
Ceiling Mounted Corner Cassette
FXKQ25MA
FXKQ32MA
FXKQ40MA
FXKQ63MA
Floor Standing Unit
FXLQ20MA
FXLQ25MA
FXLQ32MA
FXLQ40MA
FXLQ50MA
FXLQ63MA
Slim Concealed Ceiling Unit
FXDQ20P FXDQ40NA
FXDQ25P FXDQ50NA
FXDQ32P FXDQ63NA
with Drain Pump (VE)
Concealed Floor Standing Unit
FXNQ20MA
FXNQ25MA
FXNQ32MA
FXNQ40MA
FXNQ50MA
FXNQ63MA
Concealed Ceiling Unit (Small)
FXDQ20M
FXDQ25M
BS Units
BSVQ100P
BSVQ160P
BSVQ250P
Concealed Ceiling Unit
FXSQ20M
FXSQ25M
FXSQ32M
FXSQ40M
FXSQ50M
FXSQ63M
FXSQ80M
FXSQ100M
FXSQ125M

External Appearance SiENBE37-701
4General Information
2.2 Outdoor Units
REYQ26P, 28P
REYQ8P, 10P, 12P, 14P, 16P
8, 10, 12, 14, 16 HP
22.4 ~ 40.0, 45.0 kW
26, 28 HP
73.0, 78.5 kW
REYQ30P, 32P REYQ34P, 36P, 38P, 40P
30, 32 HP
85.0, 90.0 kW
42, 44 HP
118 ~ 124 kW
46, 48 HP
130, 135 kW
REYQ18P, 20P, 22P, 24P
18, 20, 22, 24 HP
50.4 ~ 67.0 kW
REYQ42P, 44P REYQ46P, 48P
34, 36, 38, 40 HP
95.4 ~ 112 kW

SiENBE37-701 Combination of Outdoor Units
General Information 5
3. Combination of Outdoor Units
Single Use
Multiple Use
Note: For multiple connection of 18HP system or more, an optional Daikin Outdoor Unit Multi
Connection Piping Kit is required.
System
Capacity
Number
of units
Single Unit Outdoor Unit Multi Connection
Piping Kit (Option)
8 10121416
8HP 1 l
—
10HP 1 l
12HP 1 l
14HP 1 l
16HP 1 l
System
Capacity
Number
of units
Multi Unit Module Outdoor Unit Multi Connection
Piping Kit (Option)
8 10121416
18HP 2 ll
Heat Recovery: BHFP26P90
20HP 2 ll
22HP 2 ll
24HP 2 ll
26HP 2 ll
28HP 2 ll
30HP 2 ll
32HP 2 ll
34HP 3 ll l
Heat Recovery: BHFP26P136
36HP 3 lll
38HP 3 ll l
40HP 3 ll l
42HP 3 lll
44HP 3 lll
46HP 3 lll
48HP 3 lll

Model Selection SiENBE37-701
6General Information
4. Model Selection
VRV III Heat Recovery Series
Connectable indoor units number and capacity
Normal Series
HP 8HP 10HP 12HP 14HP 16HP 18HP 20HP
System name REYQ8P REYQ10P REYQ12P REYQ14P REYQ16P REYQ18P REYQ20P
Outdoor unit 1 REYQ8P REYQ10P REYQ12P REYQ14P REYQ16P REMQ8P REMQ8P
Outdoor unit 2 – – – – – REMQ10P REMQ12P
Outdoor unit 3 – – – – – – –
Total number of connectable
indoor units 13 16 19 22 26 29 32
Total capacity of connectable
indoor units (kW)
10.0~26.0 12.5~32.5 15.0~39.0 17.5~45.5 20.0~52.0 22.5~58.5 25.0~65.0
HP 22HP 24HP 26HP 28HP 30HP 32HP 34HP
System name REYQ22P REYQ24P REYQ26P REYQ28P REYQ30P REYQ32P REYQ34P
Outdoor unit 1 REMQ10P REMQ12P REMQ10P REMQ12P REMQ14P REMQ16P REMQ8P
Outdoor unit 2 REMQ12P REMQ12P REMQ16P REMQ16P REMQ16P REMQ16P REMQ10P
Outdoor unit 3 – – – – – – REMQ16P
Total number of connectable
indoor units
35 39 42 45 48 52 55
Total capacity of connectable
indoor units (kW)
27.5~71.5 30.0~78.0 32.5~84.5 35.0~91.0 37.5~97.5 40.0~104.0 42.5~110.5
HP 36HP 38HP 40HP 42HP 44HP 46HP 48HP
System name REYQ36P REYQ38P REYQ40P REYQ42P REYQ44P REYQ46P REYQ48P
Outdoor unit 1 REMQ8P REMQ10P REMQ12P REMQ10P REMQ12P REMQ14P REMQ16P
Outdoor unit 2 REMQ12P REMQ12P REMQ12P REMQ16P REMQ16P REMQ16P REMQ16P
Outdoor unit 3 REMQ16P REMQ16P REMQ16P REMQ16P REMQ16P REMQ16P REMQ16P
Total number of connectable
indoor units
58 61 64
Total capacity of connectable
indoor units (kW)
45.0~117.0 47.5~123.5 50.0~130.0 52.5~136.5 55.0~143.0 57.5~149.5 60.0~156.0

SiENBE37-701 Model Selection
General Information 7
Connectable Indoor Unit
Note: FXDQ has following 2 Series, as shown below.
FXDQ-P, NAVE: with Drain Pump
Indoor unit capacity
Use the above tables to determine the capacities of indoor units to be connected. Make sure the
total capacity of indoor units connected to each outdoor unit is within the specified value (kW).
!The total capacity of connected indoor units must be within a range of 50 to 130% of the
rated capacity of the outdoor unit.
!In some models, it is not possible to connect the maximum number of connectable indoor
units. Select models so the total capacity of connected indoor units conforms to the
specification.
Type Model Name Power
Supply
Roundflow Ceiling
Mounted Cassette FXFQ 20P 25P 32P 40P 50P 63P 80P 100P 125P — — VE
600×600 4-Way Blow
Ceiling Mounted
Cassette FXZQ20M25M32M40M50M—————— V1
2-Way Blow Ceiling
Mounted Cassette FXCQ 20M 25M 32M 40M 50M 63M 80M — 125M — — V3
Ceiling Mounted
Corner Cassette FXKQ—25MA32MA40MA—63MA—————
VE
Slim Concealed Ceiling
Unit
FXDQ-
PVE 20P25P32P————————
FXDQ-
NAVE ———40NA50NA63NA—————
Concealed Ceiling Unit
(Small) FXDQ20M25M————————— V3
Concealed Ceiling Unit FXSQ 20M 25M 32M 40M 50M 63M 80M 100M 125M — —
Concealed Ceiling Unit
(Large) FXMQ — — — 40MA 50MA 63MA 80MA
100MA 125MA 200MA 250MA
VE
Ceiling Suspended Unit FXHQ — — 32MA — — 63MA —
100MA ———
Wall Mounted Unit FXAQ20MA25MA32MA40MA50MA63MA—————
Floor Standing Unit FXLQ20MA25MA32MA40MA50MA63MA—————
Concealed Floor
Standing Unit FXNQ20MA25MA32MA40MA50MA63MA—————
New refrigerant model code P20
type
P25
type
P32
type
P40
type
P50
type
P63
type
P80
type
P100
type
P125
type
P200
type
P250
type
Selecting model capacity 2.2
kW
2.8
kW
3.5
kW
4.5
kW
5.6
kW
7.0
kW
9.0
kW
11.2
kW
14.0
kW
22.4
kW
28.0
kW
Equivalent output 0.8HP 1HP 1.25HP 1.6HP 2.0HP 2.5HP 3.2HP 4HP 5HP 8HP 10HP

Model Selection SiENBE37-701
8General Information
Differences from Conventional Models
Item Differences
Object New model (P Model) Conventional model (M Model)
Compressor Connection of equalizer oil pipe
"NONE
(No particular changes in
terms of service)
"YES
Workability
Equalizer oil pipe for multi-
outdoor-unit system "NONE "YES
Procedure for calculating
refrigerant refilling quantity
"Refilling quantity due to piping
length + Adjustment quantity
according to models of
outdoor units
"Refilling quantity due to piping
length - Adjustment quantity
according to models of
outdoor units
Optional accessories Branch pipe for outdoor unit
connection
"Y branch
Type: BHFP26P90/136
"T branch
Type:
BHFP26M90+BHFP22M90P
BHFP26M135+BHFP22M135P