Daikin VRV II REYQ8MY1B User manual

R410A Heat Recovery 50Hz
Si39-306
Head office:
Umeda Center Bldg., 4-12, Nakazaki-Nishi 2-chome,
Kita-ku, Osaka, 530-8323 Japan
Tokyo office:
Shinjuku Sumitomo Bldg., 6-1 Nishi-Shinjuku
2-chome, Shinjuku-ku, Tokyo, 163-0235 Japan
Zandvoordestraat 300, B-8400 Oostende, Belgium
l For further improvement, specifications or designs are subject to change without prior notice.
Printed in Singapore 12/2003 COS
Service Manual / R410A Heat Recovery 50Hz Si39-306

Si39-306
Table of Contents i
R410A Heat Recovery
50Hz
R410A Heat Recovery 50Hz............................................................ i
1. Introduction ........................................................................................... vii
1.1 Safety Cautions ...................................................................................... vii
1.2 PREFACE ............................................................................................... xi
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 .................................................................................................40
Part 3 Refrigerant Circuit ........................................................... 41
1. Refrigerant Circuit .................................................................................42
1.1 REYQ8, 10, 12M ....................................................................................42
1.2 REYQ14, 16M ........................................................................................44
1.3 BSVQ100, 160, 250M ............................................................................46
2. Functional Parts Layout ........................................................................47
2.1 REYQ8, 10, 12M ....................................................................................47
2.2 REYQ14, 16M ........................................................................................49
3. Refrigerant Flow for Each Operation Mode...........................................51
Part 4 Function............................................................................ 57
1. Operation Mode ....................................................................................58
2. Basic Control.........................................................................................59
2.1 Normal Operation ...................................................................................59
2.2 Compressor PI Control...........................................................................60
2.3 Electronic Expansion Valve PI Control...................................................66
2.4 Cooling Operation Fan Control...............................................................67
2.5 Heat Exchange Mode in Heating Operation or Simultaneous
Cooling / Heating Operation ...................................................................68

Si39-306
ii Table of Contents
3. Special Control......................................................................................69
3.1 Startup Control .......................................................................................69
3.2 Oil Return Operation ..............................................................................71
3.3 Defrosting Operation ..............................................................................73
3.4 Pressure Equalizing Control...................................................................74
3.5 Pump-down Residual Operation ............................................................75
3.6 Restart Standby......................................................................................76
3.7 Stopping Operation ................................................................................77
3.8 Pressure Equalization Prior to Startup ...................................................79
4. Protection Control .................................................................................80
4.1 High Pressure Protection Control...........................................................80
4.2 Low Pressure Protection Control............................................................81
4.3 Discharge Pipe Protection Control .........................................................82
4.4 Inverter Protection Control .....................................................................83
4.5 STD Compressor Overload Protection...................................................84
5. Other Control.........................................................................................85
5.1 Outdoor Unit Rotation.............................................................................85
5.2 Emergency Operation ............................................................................86
5.3 Demand Operation .................................................................................88
5.4 Heating Operation Prohibition ................................................................88
6. Outline of Control (Indoor Unit) .............................................................89
6.1 Drain Pump Control................................................................................89
6.2 Louver Control for Preventing Ceiling Dirt..............................................91
6.3 Thermostat Sensor in Remote Controller...............................................92
6.4 Freeze Prevention ..................................................................................94
Part 5 Test Operation ................................................................. 95
1. Test Operation ......................................................................................96
1.1 Procedure and Outline ...........................................................................96
1.2 Operation When Power is Turned On ....................................................99
2. Outdoor Unit PC Board Layout ...........................................................100
3. Field Setting ........................................................................................101
3.1 Field Setting from Remote Controller ...................................................101
3.2 Field Setting from Outdoor Unit............................................................113
Part 6 Troubleshooting ............................................................. 133
1. Troubleshooting by Remote Controller ...............................................135
1.1 The INSPECTION / TEST Button.........................................................135
1.2 Self-diagnosis by Wired Remote Controller .........................................136
1.3 Self-diagnosis by Wireless Remote Controller .....................................137
1.4 Operation of the Remote Controller’s Inspection /
Test Operation Button ..........................................................................140
1.5 Remote Controller Service Mode .........................................................141
1.6 Remote Controller Self-Diagnosis Function .........................................143
2. Troubleshooting by Indication on the Remote Controller ....................148
2.1 “A0” Indoor Unit: Error of External Protection Device ...........................148
2.2 “A1” Indoor Unit: PC Board Defect.........................................................149
2.3 “A3” Indoor Unit: Malfunction of Drain Level Control System (S1L) ......150
2.4 “A6” Indoor Unit: Fan Motor (M1F) Lock, Overload...............................152
2.5 “A7” Indoor Unit: Malfunction of Swing Flap Motor (MA) .......................153

Si39-306
Table of Contents iii
2.6 “A9” Indoor Unit: Malfunction of Moving Part of Electronic
Expansion Valve (20E).........................................................................155
2.7 “AF” Indoor Unit: Drain Level above Limit..............................................157
2.8 “AJ” Indoor Unit: Malfunction of Capacity Determination Device ..........158
2.9 “C4” Indoor Unit: Malfunction of Thermistor (R2T)
for Heat Exchanger ..............................................................................159
2.10 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes..........160
2.11 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air.........161
2.12 “CJ” Indoor Unit: Malfunction of Thermostat Sensor in Remote
Controller..............................................................................................162
2.13 “E1” Outdoor Unit: PC Board Defect ......................................................163
2.14 “E3” Outdoor Unit: Actuation of High Pressure Switch ..........................164
2.15 “E4” Outdoor Unit: Actuation of Low Pressure Sensor ..........................165
2.16 “E5”Compressor Motor Lock (INV Compressor) ..................................166
2.17 “E6”Compressor Motor Overcurrent/Lock (STD Compressor) .............167
2.18 “E7”Malfunction of Outdoor Unit Fan Motor..........................................168
2.19 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic
Expansion Valve (Y1E, Y2E, Y3E).......................................................170
2.20 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature ..................172
2.21 “F6”Refrigerant Overcharged ...............................................................173
2.22 “H7”Abnormal Outdoor Fan Motor Signal .............................................174
2.23 “H9” Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T).....175
2.24 “J2”Current Sensor Malfunction...........................................................176
2.25 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor
(R31~33T) ............................................................................................177
2.26 “J4” Malfunction of Heat Exchanger Gas Pipe Thermistor
(R81, 82T) ............................................................................................178
2.27 “J5” Outdoor Unit: Malfunction of Thermistor (R2T) for Suction Pipe ...179
2.28 “J6” Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor
Unit Heat Exchanger ............................................................................180
2.29 “J7” Malfunction of Receiver Outlet Liquid Pipe Thermistor (R6T)........181
2.30 “J8” Malfunction of Oil Equalizing Pipe Thermistor (R7T).....................182
2.31 “J9” Malfunction of Receiver Gas Pipe Thermistor (R5T).....................183
2.32 “JA” Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor.....184
2.33 “JC” Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor .........185
2.34 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise.................................................................................186
2.35 “L5” Outdoor Unit: Inverter Compressor Abnormal ...............................187
2.36 “L8” Outdoor Unit: Inverter Current Abnormal.......................................188
2.37 “L9” Outdoor Unit: Inverter Start up Error..............................................189
2.38 “LC” Outdoor Unit: Malfunction of Transmission between
Inverter and Control PC Board .............................................................190
2.39 “P1” Outdoor Unit: Inverter Over-Ripple Protection ...............................192
2.40 “P4” Outdoor Unit: Malfunction of Inverter Radiating
Fin Temperature Rise Sensor ..............................................................193
2.41 “PJ” Outdoor Unit: Mismatching of Inverter · Fan Driver P.C. Board ...194
2.42 “UO” Low Pressure Drop due to Refrigerant Shortage or
Electronic Expansion Valve Failure......................................................195
2.43 “U1”Reverse Phase, Open Phase.........................................................196
2.44 “U2” Power Supply Insufficient or Instantaneous Failure ......................197
2.45 “U3”Check Operation not Executed......................................................199
2.46 “U4”Malfunction of Transmission between Indoor Units.......................200

Si39-306
iv Table of Contents
2.47 “U5”Malfunction of Transmission between Remote
Controller and Indoor Unit ....................................................................202
2.48 “U7” Malfunction of Transmission between Outdoor Units ....................203
2.49 “U8”Malfunction of Transmission between Master
and Slave Remote Controllers .............................................................205
2.50 “U9” Malfunction of Transmission between Indoor and
Outdoor Units in the Same System ......................................................206
2.51 “UA” Excessive Number of Indoor Units ................................................208
2.52 “UC” Address Duplication of Centralized Remote Controller .................209
2.53 “UE”Malfunction of Transmission between Centralized
Remote Controller and Indoor Unit.......................................................210
2.54 “UF” Refrigerant System not Set, Incompatible Wiring/Piping ...............212
2.55 “UH” Malfunction of System, Refrigerant System Address Undefined...213
3. Troubleshooting (OP: Centralized Remote Controller) .......................214
3.1 “UE”Malfunction of Transmission between Centralized
Remote Controller and Indoor Unit.......................................................214
3.2 “M1”PC Board Defect ............................................................................215
3.3 “M8” Malfunction of Transmission between Optional Controllers for
Centralized Control...............................................................................216
3.4 “MA” Improper Combination of Optional Controllers for
Centralized Control...............................................................................217
3.5 “MC” Address Duplication, Improper Setting ..........................................219
4. Troubleshooting (OP: Schedule Timer)...............................................220
4.1 “UE” Malfunction of Transmission between Centralized
Remote Controller and Indoor Unit.......................................................220
4.2 “M1” PC Board Defect ............................................................................222
4.3 “M8” Malfunction of Transmission between Optional
Controllers for Centralized Control .......................................................223
4.4 “MA” Improper Combination of Optional Controllers for
Centralized Control...............................................................................224
4.5 “MC”Address Duplication, Improper Setting ..........................................226
5. Troubleshooting (OP: Unified ON/OFF Controller) .............................227
5.1 Operation Lamp Blinks .........................................................................227
5.2 Display “Under Host Computer Integrate Control” Blinks
(Repeats Single Blink)..........................................................................229
5.3 Display “Under Host Computer Integrate Control” Blinks
(Repeats Double Blink) ........................................................................232
Part 7 Replacement Procedure for INV Compressor,
VRV II (REYQ8M to 48M) ................................................235
1. Replacement Procedure for INV Compressor,
VRV II (REYQ8M-48M) .......................................................................236
1.1 Replacement Procedure.......................................................................236
Part 8 Appendix......................................................................... 237
1. Piping Diagrams..................................................................................238
1.1 Outdoor Unit .........................................................................................238
1.2 Indoor Unit............................................................................................240
1.3 BS Unit .................................................................................................241

Si39-306
Table of Contents v
2. Wiring Diagrams for Reference...........................................................242
2.1 Outdoor Unit .........................................................................................242
2.2 Field Wiring ..........................................................................................244
2.3 Indoor Unit............................................................................................247
2.4 BS Unit .................................................................................................258
3. List of Electrical and Functional Parts .................................................259
3.1 Outdoor Unit .........................................................................................259
3.2 Indoor Side ...........................................................................................260
4. Option List ...........................................................................................265
4.1 Option List of Controllers......................................................................265
4.2 Option Lists (Outdoor Unit)...................................................................267
5. Piping Installation Point.......................................................................268
5.1 Piping Installation Point ........................................................................268
5.2 The Example of a Wrong Pattern .........................................................269
6. REFNET Pipe System.........................................................................270
6.1 Layout Example....................................................................................270
6.2 Max. Refrigerant Piping Length............................................................271
6.3 Example of Connection (R410A Type) REYQ8-48M
(Heat Recovery) ...................................................................................273
7. Thermistor Resistance / Temperature Characteristics........................275
8. Pressure Sensor .................................................................................277
9. Method of Replacing The Inverter’s Power Transistors and
Diode Modules ....................................................................................278
Part 9 Precautions for New Refrigerant (R410) ....................... 281
1. Precautions for New Refrigerant (R410) .............................................282
1.1 Outline ..................................................................................................282
1.2 Refrigerant Cylinders............................................................................284
1.3 Service Tools........................................................................................285
Index ............................................................................................. i
Drawings & Flow Charts ................................................................ v

Introduction Si39-306
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.

Si39-306 Introduction
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.

Introduction Si39-306
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 (R410A) 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 controller, 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.

Si39-306 Introduction
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.

Introduction Si39-306
x
1.2 PREFACE
Thank you for your continued patronage of Daikin products.
This is the new service manual for Daikin's Year 2003 VRVII 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 VRVII series Heat Recovery
System.
Dec., 2003
After Sales Service Division

Si39-306
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 Si39-306
2General Information
1. Model Names of Indoor/Outdoor Units
Indoor Units
BS Units
Outdoor Units
Type Model Name Power Supply
Ceiling mounted
cassette type
(Double flow)
FXCQ 20M 25M 32M 40M 50M 63M 80M — 125M — —
VE
Ceiling mounted
cassette type
(Multi flow)
600×600
FXZQ 20M 25M 32M 40M 50M — — — — — —
Ceiling mounted
cassette type
(Multi flow)
FXFQ — 25M 32M 40M 50M 63M 80M 100M 125M — —
Ceiling mounted
cassette corner
type
FXKQ —25M32M40M—63M—————
Ceiling mounted
built-in type FXSQ 20M 25M 32M 40M 50M 63M 80M 100M 125M — —
Ceiling mounted
duct type FXMQ — — — 40M 50M 63M 80M 100M 125M 200M 250M
Ceiling
suspended type FXHQ — — 32M — — 63M — 100M — — —
Wall mounted type FXAQ 20M 25M 32M 40M 50M 63M — — — — —
Floor standing
type FXLQ 20M 25M 32M 40M 50M 63M — — — — —
Concealed Floor
standing type FXNQ 20M 25M 32M 40M 50M 63M — — — — —
Type Model Name Power Supply
Heat Recovery
Series BSVQ 100M 160M 250M V1
Series Model Name Power Supply
Heat Recovery REYQ — 8M 10M 12M 14M 16M 18M 20M 22M 24M 26M Y1B
Series Model Name Power Supply
Heat Recovery REYQ 28M 30M 32M 34M 36M 38M 40M 42M 44M 46M 48M Y1B
VE: 1φ, 220~240V, 50Hz, 1φ, 220V, 60Hz
V1: 1φ, 220~240V, 50Hz
Y1B: 3φ, 380~415V, 50Hz

Si39-306 External Appearance
General Information 3
2. External Appearance
2.1 Indoor Units
Ceiling mounted cassette type (Double flow)
FXCQ20M
FXCQ25M
FXCQ32M
FXCQ40M
FXCQ50M
FXCQ63M
FXCQ80M
FXCQ125M
Ceiling suspended type
FXHQ32M
FXHQ63M
FXHQ100M
Ceiling mounted cassette type
(Multi flow) 600×600
FXZQ20M
FXZQ25M
FXZQ32M
FXZQ40M
FXZQ50M
Wall mounted type
FXAQ20M
FXAQ25M
FXAQ32M
FXAQ40M
FXAQ50M
FXAQ63M
Ceiling mounted cassette type (Multi flow)
FXFQ25M
FXFQ32M
FXFQ40M
FXFQ50M
FXFQ63M
FXFQ80M
FXFQ100M
FXFQ125M
Floor standing type
FXLQ20M
FXLQ25M
FXLQ32M
FXLQ40M
FXLQ50M
FXLQ63M
Ceiling mounted cassette corner type
FXKQ25M
FXKQ32M
FXKQ40M
FXKQ63M
Concealed floor standing type
FXNQ20M
FXNQ25M
FXNQ32M
FXNQ40M
FXNQ50M
FXNQ63M
Ceiling mounted built-in type
FXSQ20M
FXSQ25M
FXSQ32M
FXSQ40M
FXSQ50M
FXSQ63M
FXSQ80M
FXSQ100M
FXSQ125M
BS Units
BSVQ100M
BSVQ160M
BSVQ250M
Ceiling mounted duct type
FXMQ40M
FXMQ50M
FXMQ63M
FXMQ80M
FXMQ100M
FXMQ125M
FXMQ200M
FXMQ250M
FXMQ40~125M
FXMQ200 · 250M

External Appearance Si39-306
4General Information
2.2 Outdoor Units
H/R REYQ8M,10M H/R REYQ12M,14M,16M
8,10HP 12,14,16HP
H/R REYQ18M,20M H/R REYQ22M, 24M, 26M
18, 20HP 22, 24, 26HP
H/R REYQ28M, 30M, 32M H/R REYQ34M, 36M
28, 30, 32HP 34, 36HP
H/R REYQ38M, 40M, 42M H/R REYQ44M, 46M, 48M
38, 40, 42HP 44, 46, 48HP

Si39-306 Combination of Outdoor Units
General Information 5
3. Combination of Outdoor Units
Up to a maximum 48HP are realized by combining 8, 10, 12, 14 and 16HP.
System
Capacity
Number of
units
Module
8 10121416
8HP 1 
10HP 1 
12HP 1 
14HP 1 
16HP 1 
18HP 2 
20HP 2 
22HP 2 
24HP 2 
26HP 2 
28HP 2 
30HP 2 
32HP 2 
34HP 3  
36HP 3  
38HP 3  
40HP 3 
42HP 3 
44HP 3 
46HP 3 
48HP 3 

Model Selection Si39-306
6General Information
4. Model Selection
VRV II Heat Recovery Series
Connectable indoor units number and capacity
HP 8HP 10HP 12HP 14HP 16HP 18HP
System name REYQ8M REYQ10M REYQ12M REYQ14M REYQ16M REYQ18M
Outdoor unit 1 REYQ8M REYQ10M REYQ12M REYQ14M REYQ16M REYQ8M
Outdoor unit 2 –––––REYQ10M
Outdoor unit 3 ––––––
Total number of connectable indoor units 13 16 19 20 20 20
Total capacity of connectable indoor units (kW) 11.2~29.1 14.0~36.4 16.8~43.6 20.0~52.0 22.5~58.5 25.2~65.5
HP 20HP 22HP 24HP 26HP 28HP 30HP
System name REYQ20M REYQ22M REYQ24M REYQ26M REYQ28M REYQ30M
Outdoor unit 1 REYQ10M REYQ10M REYQ10M REYQ10M REYQ12M REYQ14M
Outdoor unit 2 REYQ10M REYQ12M REYQ14M REYQ16M REYQ16M REYQ16M
Outdoor unit 3 ––––––
Total number of connectable indoor units 20 22 32 32 32 32
Total capacity of connectable indoor units (kW) 28.0~72.8 30.8~80.0 34.0~88.4 36.5~94.9 39.3~102.1 42.5~110.5
HP 32HP 34HP 36HP 38HP 40HP 42HP
System name REYQ32M REYQ34M REYQ36M REYQ38M REYQ40M REYQ42M
Outdoor unit 1 REYQ16M REYQ10M REYQ10M REYQ10M REYQ10M REYQ10M
Outdoor unit 2 REYQ16M REYQ10M REYQ10M REYQ12M REYQ14M REYQ16M
Outdoor unit 3 – REYQ14M REYQ16M REYQ16M REYQ16M REYQ16M
Total number of connectable indoor units 32 34 36 38 40 40
Total capacity of connectable indoor units (kW) 45.0~117.0 48.0~124.8 50.5~131.3 53.3~138.5 56.5~146.9 59.0~153.4
HP 44HP 46HP 48HP
System name REYQ44M REYQ46M REYQ48M
Outdoor unit 1 REYQ12M REYQ14M REYQ16M
Outdoor unit 2 REYQ16M REYQ16M REYQ16M
Outdoor unit 3 REYQ16M REYQ16M REYQ16M
Total number of connectable indoor units 40 40 40
Total capacity of connectable indoor units (kW) 61.8~160.6 65.0~169.0 67.5~175.5

Si39-306 Model Selection
General Information 7
Connectable indoor unit
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.
Unit number and capacity of indoor unit connectable to BS unit
Type Model Name Power Supply
Ceiling mounted
cassette type
(Double flow) FXCQ 20M 25M 32M 40M 50M 63M 80M — 125M — —
VE
Ceiling mounted
cassette type
(Multi flow)
600×600
FXZQ 20M 25M 32M 40M 50M — — — — — —
Ceiling mounted
cassette type
(Multi flow) FXFQ — 25M 32M 40M 50M 63M 80M 100M 125M — —
Ceiling mounted
cassette corner FXKQ — 25M 32M 40M — 63M — — — — —
Ceiling mounted
built-in type FXSQ 20M 25M 32M 40M 50M 63M 80M 100M 125M — —
Ceiling mounted
duct type FXMQ — — — 40M 50M 63M 80M 100M 125M 200M 250M
Ceiling
suspended type FXHQ — — 32M — — 63M — 100M — — —
Wall mounted
type FXAQ 20M 25M 32M 40M 50M 63M — — — — —
Floor standing
type FXLQ 20M 25M 32M 40M 50M 63M — — — — —
Concealed Floor
standing type FXNQ 20M 25M 32M 40M 50M 63M — — — — —
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
Capacity of BS unit BSVQ100MV1 BSVQ160MV1 BSVQ250MV1
Unit number of connectable
indoor unit Five units or less Eight units or less Eight units or less
Total capacity of
connectable indoor unit Less than 11.2 kW 11.2 kW or more, less than 18 kW 18 kW or more, 28 kW or less
Connectable indoor unit Types 20M to 80M Types 20M to 125M
Types 50M to 250M
(Types 20M to 40M can not be
connected.)

Model Selection Si39-306
8General Information

Si39-306
Specifications 9
Part 2
Specifications
1. Specifications ........................................................................................10
1.1 Outdoor Units .........................................................................................10
1.2 Indoor Units ............................................................................................21
1.3 BS Units .................................................................................................40