Daikin R410As User manual

R410A Heat Pump 50Hz
Si39-302

Si39-302
Table of Contents i
R410A Heat Pump
50Hz
R410A Heat Pump 50Hz .................................................................. i
1. Introduction ............................................................................................ vi
1.1 Safety Cautions ....................................................................................... vi
1.2 PREFACE ................................................................................................x
Part 1 General Information ........................................................... 1
1. Model ames 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
Part 3 Refrigerant Circuit ........................................................... 41
1. Refrigerant Circuit .................................................................................42
1.1 RXYQ5M ................................................................................................42
1.2 RXYQ8, 10, 12M ....................................................................................44
1.3 RXYQ14, 16M ........................................................................................46
2. Functional Parts Layout ........................................................................48
2.1 RXYQ5M ................................................................................................48
2.2 RXYQ8, 10, 12M ....................................................................................49
2.3 RXYQ14, 16M ........................................................................................50
3. Refrigerant Flow for Each Operation Mode...........................................51
Part 4 Function............................................................................ 63
1. Operation Mode ....................................................................................64
2. Basic Control.........................................................................................65
2.1 ormal Operation ...................................................................................65
2.2 Compressor PI Control...........................................................................66
2.3 Electronic Expansion Valve PI Control...................................................72
2.4 Cooling Operation Fan Control...............................................................73
3. Special Control......................................................................................74
3.1 Startup Control .......................................................................................74
3.2 Oil Return Operation ..............................................................................75

Si39-302
ii Table of Contents
3.3 Defrosting Operation ..............................................................................77
3.4 Pump-down Residual Operation ............................................................78
3.5 Restart Standby......................................................................................79
3.6 Stopping Operation ................................................................................80
3.7 Pressure Equalization prior to Startup....................................................82
4. Protection Control .................................................................................83
4.1 High Pressure Protection Control...........................................................83
4.2 Low Pressure Protection Control............................................................84
4.3 Discharge Pipe Protection Control .........................................................85
4.4 Inverter Protection Control .....................................................................86
4.5 STD Compressor Overload Protection...................................................87
5. Other Control.........................................................................................88
5.1 Outdoor Unit Rotation.............................................................................88
5.2 Emergency Operation ............................................................................89
5.3 Demand Operation .................................................................................91
5.4 Heating operation prohibition .................................................................91
6. Outline of Control (Indoor Unit) .............................................................92
6.1 Drain Pump Control................................................................................92
6.2 Louver Control for Preventing Ceiling Dirt..............................................94
6.3 Thermostat Sensor in Remote Controller...............................................95
6.4 Freeze Prevention ..................................................................................97
Part 5 Test Operation ................................................................. 99
1. Test Operation ....................................................................................100
1.1 Procedure and Outline .........................................................................100
1.2 Operation When Power is Turned On ..................................................103
2. Outdoor Unit PC Board Layout ...........................................................104
3. Field Setting ........................................................................................105
3.1 Field Setting from Remote Controller ...................................................105
3.2 Field Setting from Outdoor Unit............................................................117
Part 6 Troubleshooting ............................................................. 141
1. Troubleshooting by Remote Controller ...............................................143
1.1 The I SPECTIO / TEST Button.........................................................143
1.2 Self-diagnosis by Wired Remote Controller .........................................144
1.3 Self-diagnosis by Wireless Remote Controller .....................................145
1.4 Operation of The Remote Controller’s Inspection /
Test Operation Button ..........................................................................148
1.5 Remote Controller Service Mode .........................................................149
1.6 Remote Controller Self-Diagnosis Function .........................................151
2. Troubleshooting by Indication on the Remote Controller ....................156
2.1 “A0” Indoor Unit: Error of External Protection Device ...........................156
2.2 “A1” Indoor Unit: PC Board Defect.........................................................157
2.3 “A3” Indoor Unit: Malfunction of Drain Level Control System (33H) ......158
2.4 “A6” Indoor Unit: Fan Motor (M1F) Lock, Overload...............................160
2.5 “A7” Indoor Unit: Malfunction of Swing Flap Motor (MA) .......................161
2.6 “A9” Indoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (20E) ........................................................163
2.7 “AF” Indoor Unit: Drain Level above Limit..............................................165
2.8 “AJ” Indoor Unit: Malfunction of Capacity Determination Device ..........166

Si39-302
Table of Contents iii
2.9 “C4” Indoor Unit: Malfunction of Thermistor (R2T)
for Heat Exchanger ..............................................................................167
2.10 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes..........168
2.11 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air.........169
2.12 “CJ” Indoor Unit: Malfunction of Thermostat Sensor in
Remote Controller ................................................................................170
2.13 “E1” Outdoor Unit: PC Board Defect ......................................................171
2.14 “E3” Outdoor Unit: Actuation of High Pressure Switch ..........................172
2.15 “E4” Outdoor Unit: Actuation of Low Pressure Sensor ..........................173
2.16 “E5” Compressor Motor Lock ................................................................174
2.17 “E6” Compressor Motor Overcurrent/Lock ............................................175
2.18 “E7” Malfunction of Outdoor Unit Fan Motor..........................................176
2.19 “E9” Outdoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (Y1E, Y2E)...............................................178
2.20 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature ..................180
2.21 “F6” Refrigerant Overcharged ...............................................................181
2.22 “H7” Abnormal Outdoor Fan Motor Signal .............................................182
2.23 “H9” Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T).....183
2.24 “J2” Current Sensor Malfunction...........................................................184
2.25 “J3” Outdoor Unit: Malfunction of Discharge
Pipe Thermistor (R31~33T)..................................................................185
2.26 “J5” Outdoor Unit: Malfunction of Thermistor (R2T) for Suction Pipe ...186
2.27 “J6” Outdoor Unit: Malfunction of Thermistor (R4T) for
Outdoor Unit Heat Exchanger ..............................................................187
2.28 “J9” Malfunction of Receiver Gas Pipe Thermistor (R5T).....................188
2.29 “JA” Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor.....189
2.30 “JC” Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor .........190
2.31 “L4” Outdoor Unit: Malfunction of Inverter Radiating
Fin Temperature Rise...........................................................................191
2.32 “L5” Outdoor Unit: Inverter Compressor Abnormal ...............................192
2.33 “L8” Outdoor Unit: Inverter Current Abnormal.......................................193
2.34 “L9” Outdoor Unit: Inverter Start up Error..............................................194
2.35 “LC” Outdoor Unit: Malfunction of Transmission Between Inverter
and Control PC Board ..........................................................................195
2.36 “P1” Outdoor Unit: Inverter Over-Ripple Protection ...............................197
2.37 “P4” Outdoor Unit: Malfunction of Inverter Radiating
Fin Temperature Rise Sensor ..............................................................198
2.38 “UO” Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure......................................................199
2.39 “U1” Reverse Phase, Open Phase.........................................................200
2.40 “U2” Power Supply Insufficient or Instantaneous Failure ......................201
2.41 “U3” Check Operation not executed ......................................................203
2.42 “U4” Malfunction of Transmission Between Indoor Units ......................204
2.43 “U5” Malfunction of Transmission Between Remote Controller
and Indoor Unit.....................................................................................206
2.44 “U7” Malfunction of Transmission Between Outdoor Units....................207
2.45 “U8” Malfunction of Transmission Between Master and
Slave Remote Controllers ....................................................................209
2.46 “U9” Malfunction of Transmission Between Indoor and
Outdoor Units in the Same System ......................................................210
2.47 “UA” Excessive umber of Indoor Units ................................................212
2.48 “UC” Address Duplication of Central Remote Controller........................213

Si39-302
iv Table of Contents
2.49 “UE” Malfunction of Transmission Between Central Remote Controller
and Indoor Unit.....................................................................................214
2.50 “UF” Refrigerant System not Set, Incompatible Wiring/Piping ...............216
2.51 “UH” Malfunction of System, Refrigerant System Address Undefined...217
3. Troubleshooting (OP: Central Remote Controller) ..............................218
3.1 “UE” Malfunction of Transmission Between Central
Remote Controller and Indoor Unit.......................................................218
3.2 “M1” PC Board Defect ............................................................................219
3.3 “M8” Malfunction of Transmission Between Optional Controllers
for Centralized Control .........................................................................220
3.4 “MA” Improper Combination of Optional Controllers
for Centralized Control .........................................................................221
3.5 “MC” Address Duplication, Improper Setting ..........................................223
4. Troubleshooting (OP: Schedule Timer)...............................................224
4.1 “UE” Malfunction of Transmission Between Central
Remote Controller and Indoor Unit.......................................................224
4.2 “M1” PC Board Defect ............................................................................226
4.3 “M8” Malfunction of Transmission Between Optional Controllers
for Centralized Control .........................................................................227
4.4 “MA” Improper Combination of Optional Controllers for
Centralized Control...............................................................................228
4.5 “MC” Address Duplication, Improper Setting ..........................................230
5. Troubleshooting (OP: Unified O /OFF Controller) .............................231
5.1 Operation Lamp Blinks .........................................................................231
5.2 Display “Under Host Computer Integrate Control” Blinks
(Repeats Single Blink)..........................................................................233
5.3 Display “Under Host Computer Integrate Control” Blinks
(Repeats Double Blink) ........................................................................236
Part 7 Replacement procedure for INV compressor,
VRV II (RXYQ5M to 48M)................................................ 239
1. Replacement procedure for I V compressor,
VRV II (RXYQ5M-48M) .......................................................................240
1.1 Replacement procedure .......................................................................240
Part 8 Appendix......................................................................... 241
1. Piping Diagrams..................................................................................242
1.1 Outdoor Unit .........................................................................................242
1.2 Indoor Unit............................................................................................245
2. Wiring Diagrams for Reference...........................................................246
2.1 Outdoor Unit .........................................................................................246
2.2 Field Wiring ..........................................................................................249
2.3 Indoor Unit............................................................................................252
3. List of Electrical and Functional Parts .................................................263
3.1 Outdoor Unit .........................................................................................263
3.2 Indoor Side ...........................................................................................265
4. Option List...........................................................................................270
4.1 Option List of Controllers......................................................................270
4.2 Option Lists (Outdoor Unit)...................................................................272

Si39-302
Table of Contents v
5. Piping Installation Point.......................................................................273
5.1 Piping Installation Point ........................................................................273
5.2 The Example of A Wrong Pattern.........................................................274
6. Selection of Pipe Size, Joints and Header ..........................................275
6.1 RXYQ5MY1B, RXYQ8MY1B, RXYQ10MY1B, RXYQ12MY1B,
RXYQ14MY1B, RXYQ16MY1B ...........................................................275
6.2 RXYQ18MY1B, RXYQ20MY1B, RXYQ22MY1B, RXYQ24MY1B,
RXYQ26MY1B, RXYQ28MY1B, RXYQ30MY1B, RXYQ32MY1B,
RXYQ34MY1B, RXYQ36MY1B, RXYQ38MY1B, RXYQ40MY1B,
RXYQ42MY1B, RXYQ44MY1B, RXYQ46MY1B, RXYQ48MY1B .......277
7. Thermistor Resistance / Temperature Characteristics........................280
8. Pressure Sensor .................................................................................282
9. Method of Replacing The Inverter’s Power Transistors and
Diode Modules ....................................................................................283
Part 9 Precautions for New Refrigerant (R410) ....................... 285
1. Precautions for ew Refrigerant (R410) .............................................286
1.1 Outline ..................................................................................................286
1.2 Refrigerant Cylinders............................................................................288
1.3 Service Tools........................................................................................289
Index ............................................................................................. i
Drawings & Flow Charts ................................................................ v

Introduction Si39-302
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 e ercised.
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 e plain 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 to ic 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.

Si39-302 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.
se the welder in a well-ventilated place.
sing 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 Si39-302
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.
lacing 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.

Si39-302 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 e uipment 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 e uipment, 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 Si39-302
x
1.2 PREFACE
Thank you for your continued patronage of Daikin products.
This is the new service manual for Daikin's Year 2003 R II series Heat Pump 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 R II series Heat Pump
System.
April. 2003
After Sales Service Division

Si39-302
General Information 1
Part 1
General Information
1. Model ames 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 Si39-302
2General Information
1. Model Names of Indoor/Outdoor Units
Indoor Units
Outdoor Units (Inverter Series)
Type Model ame 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 FX Q 20M 25M 32M 40M 50M 63M — — — — —
Series Model ame Power
Supply
Inverter Heat Pump RXYQ 5M 8M 10M 12M 14M 16M 18M 20M 22M 24M 26M Y1B
Series Model ame Power
Supply
Inverter Heat Pump RXYQ 28M 30M 32M 34M 36M 38M 40M 42M 44M 46M 48M Y1B
VE: 1φ, 220~240V, 50Hz, 1φ, 220V, 60Hz
Y1B: 3φ, 380~415V, 50Hz

Si39-302 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 mounted duct type
FXMQ40M
FXMQ50M
FXMQ63M
FXMQ80M
FXMQ100M
FXMQ125M
FXMQ200M
FXMQ250M
FXMQ40~125M
FXMQ200 · 250M
Ceiling mounted cassette type
(Multi flow) 600×600
FXZQ20M
FXZQ25M
FXZQ32M
FXZQ40M
FXZQ50M
Ceiling suspended type
FXHQ32M
FXHQ63M
FXHQ100M
Ceiling mounted cassette type (Multi flow)
FXFQ25M
FXFQ32M
FXFQ40M
FXFQ50M
FXFQ63M
FXFQ80M
FXFQ100M
FXFQ125M
Wall mounted type
FXAQ20M
FXAQ25M
FXAQ32M
FXAQ40M
FXAQ50M
FXAQ63M
Ceiling mounted cassette corner type
FXKQ25M
FXKQ32M
FXKQ40M
FXKQ63M
Floor standing type
FXLQ20M
FXLQ25M
FXLQ32M
FXLQ40M
FXLQ50M
FXLQ63M
Ceiling mounted built-in type
FXSQ20M
FXSQ25M
FXSQ32M
FXSQ40M
FXSQ50M
FXSQ63M
FXSQ80M
FXSQ100M
FXSQ125M
Concealed floor standing type
FX Q20M
FX Q25M
FX Q32M
FX Q40M
FX Q50M
FX Q63M

External Appearance Si39-302
4General Information
2.2 Outdoor Units
RXYQ5M RXYQ8M,10M RXYQ12M,14M,16M RXYQ18M, 20M
5HP 8,10HP 12,14,16HP 18, 20HP
RXYQ22M, 24M, 26M RXYQ28M, 30M, 32M
22, 24, 26HP 28, 30, 32HP
RXYQ34M, 36M RXYQ38M, 40M, 42M
34, 36HP 38, 40, 42HP
RXYQ44M, 46M, 48M
44, 46, 48HP

Si39-302 Combination of Outdoor Units
General Information 5
3. Combination of Outdoor Units
★18~48HP are realized by combining 8, 10, 12, 14 and 16HP.
System Capacity umber of units Module
5 8 10 12 14 16
5HP 1 ●
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 Si39-302
6General Information
4. Model Selection
VRV II Heat Pump Series
Connectable indoor units number and capacity
HP 5HP 8HP 10HP 12HP 14HP 16HP
System name RXYQ5M RXYQ8M RXYQ10M RXYQ12M RXYQ14M RXYQ16M
Outdoor unit 1 RXYQ5M RXYQ8M RXYQ10M RXYQ12M RXYQ14M RXYQ16M
Outdoor unit 2 ––––––
Outdoor unit 3 ––––––
Total number of connectable indoor units 8 13 16 19 20 20
Total capacity of connectable indoor units (kW) 7.0~18.2 11.2~29.1 14.0~36.4 16.8~43.6 20.0~52.0 22.5~58.5
HP 18HP 20HP 22HP 24HP 26HP 28HP
System name RXYQ18M RXYQ20M RXYQ22M RXYQ24M RXYQ26M RXYQ28M
Outdoor unit 1 RXYQ8M RXYQ10M RXYQ10M RXYQ10M RXYQ10M RXYQ12M
Outdoor unit 2 RXYQ10M RXYQ10M RXYQ12M RXYQ14M RXYQ16M RXYQ16M
Outdoor unit 3 ––––––
Total number of connectable indoor units 20 20 22 32 32 32
Total capacity of connectable indoor units (kW) 25.2~65.5 28.0~72.8 30.8~80.0 34.0~88.4 36.5~94.9 39.3~102.1
HP 30HP 32HP 34HP 36HP 38HP 40HP
System name RXYQ30M RXYQ32M RXYQ34M RXYQ36M RXYQ38M RXYQ40M
Outdoor unit 1 RXYQ14M RXYQ16M RXYQ10M RXYQ10M RXYQ10M RXYQ10M
Outdoor unit 2 RXYQ16M RXYQ16M RXYQ10M RXYQ10M RXYQ12M RXYQ14M
Outdoor unit 3 – – RXYQ14M RXYQ16M RXYQ16M RXYQ16M
Total number of connectable indoor units 32 32 34 36 38 40
Total capacity of connectable indoor units (kW) 42.5~110.5 45.0~117.0 48.0~124.8 50.5~131.3 53.3~138.5 56.5~146.9
HP 42HP 44HP 46HP 48HP
System name RXYQ42M RXYQ44M RXYQ46M RXYQ48M
Outdoor unit 1 RXYQ10M RXYQ12M RXYQ14M RXYQ16M
Outdoor unit 2 RXYQ16M RXYQ16M RXYQ16M RXYQ16M
Outdoor unit 3 RXYQ16M RXYQ16M RXYQ16M RXYQ16M
Total number of connectable indoor units 40 40 40 40
Total capacity of connectable indoor units (kW) 59.0~153.4 61.8~160.6 65.0~169.0 67.5~175.5

Si39-302 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.
Type Model ame 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 FX Q 20M 25M 32M 40M 50M 63M — — — — —
ew 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 Si39-302
8General Information

Si39-302
Specifications 9
Part 2
Specifications
1.Specifications........................................................................................10
1.1Outdoor Units.........................................................................................10
1.2Indoor Units............................................................................................21