Daikin RXLQ240TATJU, RXLQ120TATJU, RXLQ72TAYDU, RXLQ120TAYDU, RXLQ96TAYDU Installation Manual

INSTALLATION MANUAL

VRV Aurora Series

System air conditioner

MODEL

RXLQ72TATJU
RXLQ96TATJU
RXLQ120TATJU
RXLQ144TATJU
RXLQ192TATJU
RXLQ240TATJU

RXLQ72TAYDU
RXLQ96TAYDU
RXLQ120TAYDU
RXLQ144TAYDU
RXLQ192TAYDU
RXLQ240TAYDU

RXLQ72TAYCU
RXLQ96TAYCU
RXLQ120TAYCU
RXLQ144TAYCU
RXLQ192TAYCU
RXLQ240TAYCU

English

Français

Español

Safety considerations

Read these Safety considerations for Installation carefully be­fore installing an air conditioner or heat pump. After complet­ing the installation, make sure that the unit operates properly
during the startup operation.
Instruct the customer on how to operate and maintain the
unit.
Inform customers that they should store this Installation
Manual with the Operation Manual for future reference.
Always use a licensed installer or contractor to install this
product.
Improper installation can result in water or refrigerant leak-

age, electrical shock, re, or explosion.

Meanings of DANGER, WARNING, CAUTION, and NOTE
Symbols:

DANGER ........ Indicates an imminently hazardous

situation which, if not avoided, will
result in death or serious injury.

WARNING ....... Indicates a potentially hazardous

situation which, if not avoided,
could result in death or serious
injury.

CAUTION ........ Indicates a potentially hazardous

situation which, if not avoided,
may result in minor or moderate
injury. It may also be used to alert
against unsafe practices.

NOTE ........... Indicates situations that may result

in equipment or property-damage
accidents only.

INFORMATION ... This symbol identies useful tips

or additional information.

DANGER

• Refrigerant gas is heavier than air and replaces oxygen. A
massive leak will result in oxygen depletion, especially in
basements, and an asphyxiation hazard will result in seri-

ous injury or death.

• Do not ground units to water pipes, gas pipes, telephone
wires, or lightning rods as incomplete grounding will result
a severe shock hazard resulting in severe injury or death.
Additionally, grounding to gas pipes will result a gas leak

and potential explosion resulting in severe injury or death.

• If refrigerant gas leaks during installation, ventilate the

area immediately. Refrigerant gas will result in producing

toxic gas if it comes into contact with re. Exposure to this

gas will result in severe injury or death.

• After completing the installation work, check that the re­frigerant gas does not leak throughout the system.

• Do not install unit in an area where ammable materials
are present due to risk of explosions that will result in seri-

ous injury or death.

• Safely dispose all packing and transportation materials
in accordance with federal/state/local laws or ordinances.
Packing materials such as nails and other metal or wood
parts, including plastic packing materials used for trans­portation will result in injuries or death by suffocation.

WARNING

• Only qualied personnel must carry out the installation

work. Installation must be done in accordance with this
installation manual. Improper installation could result in

water leakage, electric shock, or re.

• When installing the unit in a small room, take measures to
keep the refrigerant concentration from exceeding allow­able safety limits. Excessive refrigerant leaks, in the event

of an accident in a closed ambient space, could result in

oxygen deciency.

• Use only specied accessories and parts for installation
work. Failure to use specied parts could result in water
leakage, electric shocks, re, or the unit falling.

• Install the air conditioner or heat pump on a foundation

strong enough that it can withstand the weight of the unit.

A foundation of insufcient strength could result in the unit

falling and causing injuries.

• Take into account strong winds, typhoons, or earthquakes
when installing. Improper installation could result in the
unit falling and causing accidents.

• Make sure that a separate power supply circuit is pro­vided for this unit and that all electrical work is carried

out by qualied personnel according to local, state and
national regulations. An insufcient power supply capacity

or improper electrical construction could result in electric

shocks or re.

• Make sure that all wiring is secured, that specied wires
are used, and that no external forces act on the terminal

connections or wires. Improper connections or installation

could result in re.

• When wiring, position the wires so that the control box

cover can be securely fastened. Improper positioning of

the control box cover could result in electric shocks, re, or

the terminals overheating.

• Before touching electrical parts, turn off the unit.

• The circuit must be protected with the required safety de-

vice according to local and national regulations, i.e. a fuse,
a circuit breaker or GFCI.

• This equipment can be installed with a Ground-Fault Cir­cuit Interrupter (GFCI). Although this is a recognized mea­sure for additional protection, with the grounding system in
North America, a dedicated GFCI is not necessary.

• Securely fasten the unit terminal cover (panel). If the
terminal cover/panel is not installed properly, dust or

water may enter the outdoor unit and could result in re or

electric shock.

• When installing or relocating the system, keep the refriger-
ant circuit free from substances other than the specied

refrigerant (R410A) such as air. Any presence of air or oth­er foreign substance in the refrigerant circuit could result
in abnormal pressure rise or rupture, resulting in injury.

• Do not change the setting of the protection devices. If the
pressure switch, thermal switch, or other protection device
is shorted and operated forcibly, or parts other than those

specied by Daikin are used, re or explosion could result.

Englishi

CAUTION

• Do not touch the switch with wet ngers. Touching a switch
with wet ngers may result in electric shock.

• Do not allow children to play on or around the unit or it

may result in injury.

• The heat exchanger ns are sharp enough to cut, and

may result in injury if improperly used. To avoid injury wear

glove or cover the ns when working around them.

• Do not touch the refrigerant pipes during and immediately

after operation as the refrigerant pipes may be hot or
cold, depending on the condition of the refrigerant ow­ing through the refrigerant piping, compressor, and other
refrigerant cycle parts. It may result in your hands get­ting burns or frostbite if you touch the refrigerant pipes.
To avoid injury, give the pipes time to return to normal
temperature or, if you must touch them, be sure to wear
proper gloves.

• Install drain piping for proper drainage. Improper drain pip­ing may result in water leakage and property damage.

• Insulate piping to prevent condensation.

• Be careful when transporting the product.

• Do not disconnect the power immediately after stopping
operation. Stop the operation rst by using remote control-

ler prior to disconnecting the power.
Always wait for at least 5 minutes before disconnecting the
power. Otherwise, water leakage may result.

• Do not use a charging cylinder. Using a charging cylinder
may cause the refrigerant to deteriorate.

• Refrigerant R410A in the system must be kept clean, dry,
and tight.
(a) Clean and Dry - Foreign materials (including mineral

oils such as SUNISO oil or moisture) should be pre­vented from getting into the system.

(b) Tight - R410A does not contain any chlorine, does

not destroy the ozone layer, and does not reduce the
earth’s protection again harmful ultraviolet radiation.
R410A can contribute to the greenhouse effect if it is
released. Therefore take proper measures to check
for the tightness of the refrigerant piping installation.
Read the chapter Refrigerant Piping and follow the
procedures.

• Since R410A is a blend, the required additional refriger­ant must be charged in its liquid state. If the refrigerant is
charged in a state of gas, its composition can change and
the system will not work properly.

• The indoor unit is for R410A. See the catalog for indoor
models that can be connected. Normal operation is not
possible when connected to other units.

• Remote controller (wireless kit) transmitting distance may
be shortened in rooms with electronic uorescent lamps

(inverter or rapid start types). Install the indoor unit far

away from uorescent lamps as much as possible.

• Indoor units are for indoor installation only. Outdoor units

can be installed either outdoors or indoors. This unit is for
outdoor use.

• Do not install the air conditioner or heat pump in the fol­lowing locations:
(a) Where a mineral oil mist or oil spray or vapor is pro-

duced, for example, in a kitchen.

Plastic parts may deteriorate and fall off and thus may
result in water leakage.

(b) Where corrosive gas, such as sulfurous acid gas, is

produced.
Corroding copper pipes or soldered parts may result
in refrigerant leakage.

(c) Near machinery emitting electromagnetic waves.

Electromagnetic waves may disturb the operation of

the control system and cause the unit to malfunction.

(d) Where ammable gas may leak, where there is car-

bon ber, or ignitable dust suspension in the air, or
where volatile ammables such as thinner or gasoline

are handled. Operating the unit in such conditions

may result in a re.

• Take adequate measures to prevent the outdoor unit from

being used as a shelter by small animals. Small animals
making contact with electrical parts may result in malfunc-

tions, smoke, or re. Instruct the customer to keep the

area around the unit clean.

NOTE

• Install the power supply and transmission wires for the in-
door and outdoor units at least 3.5ft.(1m) away from tele-

visions or radios to prevent image interference or noise.

Depending on the radio waves, a distance of 3.5ft.(1m)
may not be sufcient to eliminate the noise.

• Dismantling the unit, treatment of the refrigerant, oil and

additional parts must be done in accordance with the
relevant local, state, and national regulations.

• Do not use the following tools that are used with con­ventional refrigerants: gauge manifold, charge hose, gas

leak detector, reverse ow check valve, refrigerant charge

base, vacuum gauge, or refrigerant recovery equipment.

• If the conventional refrigerant and refrigerator oil are
mixed in R410A, the refrigerant result in deterioration.

• This air conditioner or heat pump is an appliance that

should not be accessible to the general public.

• As design pressure is 478 psi (3.3 MPa), the wall thick-
ness of eld-installed pipes should be selected in accor-

dance with the relevant local, state, and national regula­tions.

Codes and Regulations

This product is designed and manufactured to comply with
national codes. Installation in accordance with such codes
and/or prevailing local codes/regulations is the responsibility
of the installer. The manufacturer assumes no responsibility
for equipment installed in violation of any codes or regula­tions. Rated performance is achieved after 72 hours of opera­tion.
Make sure to use a DAIKIN specied checker while measur­ing sub cooling. Do not use the check valve or the other port
to measure it.

English ii

RXLQ72TATJU
RXLQ96TATJU
RXLQ120TATJU
RXLQ144TATJU
RXLQ192TATJU
RXLQ240TATJU

RXLQ72TAYDU
RXLQ96TAYDU
RXLQ120TAYDU
RXLQ144TAYDU
RXLQ192TAYDU
RXLQ240TAYDU

RXLQ72TAYCU
RXLQ96TAYCU
RXLQ120TAYCU
RXLQ144TAYCU
RXLQ192TAYCU
RXLQ240TAYCU

VRV Aurora Series System air conditioner

Installation Manual

CONTENTS

Safety considerations .....................................i

Codes and Regulations .................................. ii

1. Introduction ...........................................2

1.1. General information ................................. 2

1.2. Combinations and options ....................... 2

1.3. Indoor capacity range .............................. 3

1.4. Scope of the manual ............................... 3

2. Accessories ...........................................3

2.1. Accessories supplied with this unit .......... 3

3. Overview of unit ....................................4

3.1. Opening the unit ...................................... 4

3.2. Technical and Electrical specications .... 4

3.3. Main components .................................... 4

4. Selecting an installation location ........4

4.1. General precautions on installation ......... 4

4.2. Weather related precautions ................... 5

4.3. Selecting a location in cold climates ....... 5

5. Dimensions and service space ............ 6

5.1. Dimensions of outdoor unit ..................... 6

5.2. Service space.......................................... 6

6. Inspecting, handling and unpacking

the unit ...................................................7

6.1. Inspection ................................................ 7

6.2. Handling .................................................. 7

6.3. Unpacking ............................................... 7

6.4. Installing the unit ..................................... 8

6.5. Method for removing shipping plates ...... 8

7. Refrigerant pipe size and allowable pipe

length .............................................................9

7.1. General information ................................. 9

7.2. Selection of piping material ..................... 9

7.3. Selection of piping size ........................... 9

7.4. Selection of refrigerant branch kits ........ 10

7.5. System piping (length) limitations ......... 11

8. Precautions on refrigerant piping ......14

8.1. Caution for brazing ................................ 14

8.2. Connecting the refrigerant piping .......... 14

8.3. Guidelines for handling stop valve......... 17

9. Field wiring ..........................................18

9.1. Power circuit, safety device and cable

requirements ......................................... 19

9.2. Wiring connection example for whole

system ................................................... 19

9.3. Leading wire procedure ......................... 19

9.4. Transmission wiring connection

procedure .............................................. 20

9.5. Power wiring connection procedure ...... 21

9.6. Procedure for Wiring Inside Units .......... 21

10. Air tight test and vacuum drying .......22

11. Pipe insulation ..................................... 23

12. Checking of device and installation

conditions ............................................24

13. Makingeldsettings ........................... 24

13.1. Accessing the push buttons on the

printed circuit board ............................... 24

13.2. Operating the push buttons and DIP

switches on the printed circuit board ..... 24

13.3. Connecting the PC congurator to the

outdoor unit ........................................... 26

14. Charging refrigerant ............................ 26

14.1. Precautions ........................................... 26

14.2. Calculating the additional refrigerant

charge ................................................... 26

14.3. Method for adding refrigerant ................ 28

15. Start-upandconguration .................30

15.1. Checks before initial start up ................. 30

15.2. Monitoring function and eld settings .... 31

15.3.

15.4. Test operation ........................................ 39

15.5. Malfunction code list .............................. 40

Energy saving and optimum operation

... 37

16. Operation of the unit ........................... 43

17. Maintenance and service .................... 43

17.1. Maintenance introduction ...................... 43

17.2. Service precautions............................... 43

17.3. Service mode operation ........................ 45

18. Caution for refrigerant leaks ..............45

18.1. Introduction ........................................... 45

19. Disposal requirements ........................45

The original instructions are written in English. All other

languages are translations of the original instructions.

1 English

1. Introduction

1.1. General information

This installation manual concerns the VRV Aurora series, full inverter
driven, heat pump system.

1

6

2

1 VRV Aurora series Heat pump outdoor unit

2 Refrigerant piping

3 VRV indoor unit

4 User interface (dedicated depending on indoor unit type)

5 User interface (wireless, dedicated depending on indoor unit

type)

6 Cool/Heat selector

INFORMATION

Not all combinations of indoor units are allowed. For guidance, see

1.2. Combinations and options.

1.2 . Combinations and options

The VRV Aurora series heat pump system can be combined with sev­eral types of indoor units and is intended for R410A use only.

For an overview which units are available you can consult the product
catalogue for VRV Aurora series.

NOTE

To be sure your system setup (outdoor unit + indoor unit(s)) will work,
you have to consult the latest technical engineering data for VRV
Aurora series.

An overview is given indicating the allowed combinations of indoor
units and outdoor units. Not all combinations are allowed. They are
subject to rules (combination between outdoor-indoor, single outdoor
unit use, multiple outdoor units use, combinations between indoor
units, etc.) mentioned in the technical engineering data.

1.2 .1. Indoor units combinations

In general VRV indoor units can be connected to RXLQ-T units.

3 3 33

4

5

4 4

1.2.2. Outdoor units combinations

Aurora series combination for RXLQ-T units are as indicated in tables
below (and right), where RXLQ 144-240 consists of multiple RXLQ
72-120 single modules as indicated.

72 96 120

RXLQ72TATJU/TAYDU/TAYCU 1
RXLQ96TATJU/TAYDU/TAYCU 1
RXLQ120TATJU/TAYDU/TAYCU 1
RXLQ144TATJU/TAYDU/TAYCU 2
RXLQ192TATJU/TAYDU/TAYCU 2
RXLQ240TATJU/TAYDU/TAYCU 2

To install the outdoor unit, the following accessory parts are also
required.

1 Refrigerant branch kit.

Description Model name

KHRP26M22H9

Refnet header

Refnet joint

For the selection of the optimal branch kit, refer to 7.4. Selection of

refrigerant branch kits on page10.

2 Outdoor unit multi connection piping kit.

Number of outdoor units connected

2

BHFP22P100U

3 In order to control the cooling or heating operation from a central

location, the following option can be connected:

- Cool/Heat selector: KRC19-26A

- With optional xing box for the switch: KJB111A

- Centralized control devices (e.g., intelligent Touch Manager)

4 To instruct specic operation with an external input coming from a

central control the external control adaptor (DTA104A61/62) can

be used. Instructions (group or individual) can be instructed for low
noise operation and power consumption limitation operation.

5 For RXLQ-T units it is also possible to make several commissioning

eld settings through a personal computer interface. For this option

999482P3 is required which is a dedicated cable to communicate
with the outdoor unit. The software for the user interface program

can be obtained from your local Daikin sales ofce.

KHRP26M33H9

KHRP26M72H9

KHRP26M73HU9

KHRP26A22T9

KHRP26A33T9

KHRP26M72TU9

KHRP26M73TU9

INFORMATION

Refer to the technical engineering data for the latest option names.

2English

1.3. Indoor capacity range

1.3.1. Connection Ratio

Connection Ratio = Total capacity index of the indoor units / Capac­ity index of the outdoor units

Min. connection ratio

Type

Single outdoor unit

Double outdoor units

When using

Type

Single

outdoor

unit

Double

outdoor

units

FXDQ,

FXMQ-PB,

FXAQ,

FXSQ07-54 TA

200% *1

Notes: *1. If the operational capacity of indoor units is more than

130%, low airow operation is enforced in all the indoor

units.

*2. When outdoor-air processing units (FXMQ-MF) and

standard indoor units are connected, the total connection
capacity of the outdoor-air processing units (FXMQ-MF)

must not exceed 30% of the capacity index of the outdoor
units. And the connection ratio must not exceed 100%.

Types of connected outdoor units

RXLQ-T type

70%

Max. connection ratio

Types of connected indoor units

only

When using

at least one

FXZQ05 TA,

FXSQ05 TA,

FXFQ07/09

180% *1 200% *1

160% *1 160% *1

When using

other indoor

unit models

Types of connected air treatment

FXMQ-MF

When

FXMQ-MF

is only

connected

100% 100% *2

When

FXMQ-MF

and indoor

units

are connected

1.4. Scope of the manual

This manual describes the procedures for handling, installing and
connecting the VRV Aurora series outdoor units. This manual has
been prepared to ensure adequate maintenance of the unit, and it will
provide help in case problems occur.

INFORMATION

The installation of the indoor unit(s) is described in the indoor unit
installation manual provided with the indoor unit(s).

2. Accessories

2.1. Accessories supplied with this unit

Conrm the following accessories are included. The storage location
of the accessories is shown in the gure below.

Accessories assy (piping)

Accessories assy (operation
and installation manual)

1.3.2. Outdoor Unit Combinations

Total capacity of indoor units needs to be within the specied range.

Capacity Range 6 ton 8 ton 10 ton 12 ton 16 ton 20 ton

72TATJU 96TATJU 120TATJU 144TATJU 192TATJU 240TATJU

RXLQ

Max. Number

of Connectable

Indoor Units

72TAYDU 96TAYDU 120TAYDU 144TAYDU 192TAYDU 240TAYDU

72TAYCU 96TAYCU 120TAYCU 144TAYCU 192TAYCU 240TAYCU

12 16 20 25 33 41

Note: Values inside brackets are based on connection of indoor units

rated at maximum capacity, 200% for single outdoor units, and

160% for double outdoor units.

NOTE

Do not throw away any of the accessories until installation is complete.
They are needed for installation work.

Name Clamp (1) Clamp (2) Clamp (3) Vinyl tube Manuals, etc.

Quantity 7 pcs. 1 pc. 1 pc. 5 pcs. 1 pc. each

• Operation Manual

• Installation Manual

Shape

Name

(Small)

Liquid side

accessory

pipe (1)

(Large)

Liquid side

accessory

pipe (2)

Quantity 1 pc. 1 pc. 1 pc. 1 pc.

Shape

72-120T

Name

L type

accessory joint

Quantity 1 pc.

• REQUEST FOR THE

INDICATION label
(Installation records)

Gas side

accessory

pipe (1)

72,96T 120T 72,96T 120T

Gas side

accessory

pipe (2)

3 English

Shape

3. Overview of unit

3.1. Opening the unit

To gain access to the unit, front panels need to be opened as follows:

RXLQ72-120T type

14x

Once the front panel open, the control box can be accessed by remov­ing the control box cover as follows.

RXLQ72-120T type

6x

For service purposes, the push buttons on the main printed circuit
board need to be accessed. To access these push buttons, the control

box cover does not need to be opened. See 13. Making eld settings
on page24.

DANGER: ELECTRICAL SHOCK

See Safety considerations on pagei.

CAUTION

Appliance not accessible to the general public, install it in a secured
area, protected from easy access.
This unit, both indoor and outdoor, is suitable for installation in a com­mercial and light industrial environment.

4.1. General precautions on installation

Select an installation site that meets the following requirements:

•

The foundation must be strong enough to support the weight of the unit.

• Installation location is at to prevent vibrations and noise generation
and to have sufcient stability.

• The space around the unit is adequate for maintenance and servic-
ing (refer to 5.2. Service space on page6).

• The space around the unit allows for sufcient air circulation.

• There is no danger of re due to leakage of inammable gas.

• The equipment is not intended for use in a potentially explosive

atmosphere.

• Select the location of the unit in such a way that the sound generat­ed by the unit does not disturb anyone, and the location is selected
according the applicable legislation.

• All piping lengths and distances have been taken into consideration
(refer to 7.5. System piping (length) limitations on page11).

• Take care that in the event of a water leak, water cannot cause any

damage to the installation space and surroundings.

• When installing the unit in a small room, take measures in order to
keep the refrigerant concentration from exceeding allowable safety

limits in the event of a refrigerant leak, refer to 18. Caution for refrig-

erant leaks on page45.

CAUTION

Excessive refrigerant concentrations in a closed room can lead to
oxygen deciency.

DANGER: DO NOT TOUCH PIPING AND INTERNAL PARTS

See Safety considerations on pagei.

3.2. TechnicalandElectricalspecications

Refer to the Engineering Data Book for the complete list of specica­tions.

3.3. Main components

For main components and function of the main components, refer to

the Engineering Data Book.

4. Selecting an installation location

WARNING

Be sure to provide for adequate measures in order to prevent that the
unit is used as a shelter by small animals.
Small animals making contact with electrical parts can cause malfunc-

tions, smoke or re. Please instruct the customer to keep the area

around the unit clean and clear.
In a domestic environment this product may cause radio interference
in which case the user may be required to take adequate measures.

NOTE

The equipment described in this manual may cause electronic noise
generated from radio-frequency energy. The equipment complies

to specications that are designed to provide reasonable protection

against such interference. However, there is no guarantee that inter­ference will not occur in a particular installation.
It is therefore recommended to install the equipment and electric wires
keeping proper distances away from stereo equipment, personal
computers, etc.

1

2

2

A

B

5

1 Indoor unit

2 Branch switch, overcurrent breaker

3 Remote controller

4 Cool/Heat selector

5 Personal computer or radio

A

≥ 60 in. (1500 mm)

B

≥ 40 in. (1000 mm)

3

B

4

B

A

A

A

4English

An inverter air conditioner may cause electronic noise generated from

AM broadcasting. Examine where to install the main air conditioner

and electric wires, keeping proper distances away from stereo equip­ment, personal computers, etc.
Particularly for locations with weak reception, ensure there is a dis­tance of at least 10 ft. (3 m) for indoor remote controllers, place power
wiring and transmission wiring in conduits, and ground the conduits.

• The refrigerant R410A itself is nontoxic, non-ammable and is safe.
If the refrigerant should leak however, its concentration may exceed

the allowable limit depending on room size. Due to this, it could be
necessary to take measures against leakage. Refer to 18. Caution

for refrigerant leaks on page45.

• Do not install in the following locations:

- Locations where sulfurous acids and other corrosive gases may
be present in the atmosphere. Copper piping and soldered joints
may corrode, causing refrigerant to leak.

- Locations where a mineral oil mist, spray or vapor may be pres­ent in the atmosphere. Plastic parts may deteriorate and fall off or
cause water leakage.

- Locations where equipment that produces electromagnetic
waves is found. The electromagnetic waves may cause the con­trol system to malfunction, preventing normal operation.

- Locations where ammable gases may leak, where thinner,
gasoline and other volatile substances are handled, or where
carbon dust and other incendiary substances are found in the
atmosphere. Leaked gas may accumulate around the unit, caus-

ing an explosion.

• When installing, take strong winds, hurricanes or earthquakes into

account, improper installation may result in the unit turning over.

4.2. Weather related precautions

• Be sure that the air inlet of the unit is not positioned towards the
main wind direction. Frontal wind will disturb the operation of the
unit. If necessary, use a screen to block the wind.

• Ensure that water cannot cause any damage to the location by

adding water drains to the foundation and prevent water traps in the
construction.

• When installing in areas where air contains high levels of salt such
as near the ocean; Contact your Daikin sales representative for
additional precautions.

To prevent exposure to wind and snow, install a bafe plates on the air

side of the outdoor unit (see 5.2. Service space for space requirement):

1

1 Bafe plates

In heavy snowfall areas it is very important to select an installation
site where the snow will not affect the unit. Additionally, installation of
a snow guard is recommended. When installing the unit in a location
where there is heavy snowfall, remove the coil guards to prevent snow

from accumulating on the ns.
If lateral snowfall is possible, make sure that the heat exchanger coil

is not affected by the snow (if necessary construct a lateral canopy).
Install the outdoor unit so that the bottom frame is at least 19-11/16 in.
(500 mm) above predicted snowfall levels.

1

4.3. Selecting a location in cold climates

NOTE

• When operating the unit in a low outdoor ambient temperature, be
sure to follow the instructions described below.

• The following images are for reference only. For more details con­tact your local dealer.

5 English

2

1 Construct a large canopy.

2 Construct a pedestal.

NOTE

When operating the unit in a low outdoor ambient temperature with
high humidity conditions, make sure to take precautions to keep the
drainholes of the unit free.

5. Dimensions and service space

1 2

5.1. Dimensions of outdoor unit

RXLQ72-120T type

1

2

5.2. Service space

The space around the unit is adequate for servicing and the minimum

space for air inlet and air outlet is available (refer to the gure below

and choose one of the possibilities).

8

7

4

5

6

1

2

3

10

9

Foundation bolt holes

9/16 (15) × 7/8 (22.5) oblong holes × 4

Pitch of foundation bolt holes

Pitch of foundation bolt holes

28-7/16 to 29 (722 to 737)
4 2-5/8 (67)
5 2-5/8 (67)
6 30-3/16 (767)
7 11-1/8 (282)
8 4-13/16 (122)
9 5-3/16 (132)

10 3-7/8 (98)
11 4-3/16 (107)
12 10-11/16 (272)
13 19-3/4 (502)
14 48-7/8 (1242)
15 6-9/16 (167)
16 8-9/16 (217)
17 10-1/2 (267)

18 66-11/16 (1694)

11

12

13

14

RXLQ72-120T type

42-3/8 (1076)

1615 17

3

18

Unit: in. (mm)

b

a

a

c

a

a

d

b

e

d

3

b

e

f

a

a

d

c

a

a

5

b

e

f

a

a

d

ABCD Sides along the installation site with obstacles

Suction side

A+B+C+D A+B

a≥3/8 (10)
b≥11-3/4 (300)

1

c≥3/8 (10)
d≥19-5/8 (500)

a≥3/8 (10)
b≥11-3/4 (300)

2

c≥3/8 (10)
d≥19-5/8 (500)
e≥3/4 (20)

a≥3/8 (10)
b≥11-3/4 (300)
c≥3/8 (10)

3

d≥19-5/8 (500)
e≥3/4 (20)
f≥23-5/8 (100)

a≥3/8 (10)
b≥11-3/4 (300)

4

c≥3/8 (10)
d≥19-5/8 (500)
e≥3/4 (20)

a≥3/8 (10)
b≥19-5/8 (500)
c≥3/8 (10)

5

d≥19-5/8 (500)
e≥3/4 (20)
f≥35-7/16 (900)

c

a≥2 (50)
b≥3-7/8 (100)
c≥2 (50)
d≥19-5/8 (500)

a≥2 (50)
b≥3-7/8 (100)
c≥2 (50)
d≥19-5/8 (500)
e≥3-7/8 (100)

a≥2 (50)
b≥3-7/8 (100)
c≥2 (50)
d≥19-5/8 (500)
e≥3-7/8 (100)
f≥19-5/8 (500)

a≥2 (50)
b≥3-7/8 (100)
c≥2 (50)
d≥19-5/8 (500)
e≥3-7/8 (100)

a≥2 (50)
b≥19-5/8 (500)
c≥2 (50)
d≥19-5/8 (500)
e≥3-7/8 (100)
f≥23-5/8 (600)

a≥7-7/8 (200)
b≥11-3/4 (300)

a≥7-7/8 (200)
b≥11-3/4 (300)

e≥15-3/4 (400)

e

4

b

e

d

b

Unit: in.(mm)

c

c

6English

h2

<Front side> <Suction side>

h2

a

b +

2

or more

Service

space

or more

h1

+

2

h1

b

a 59 in. (1500 mm)

b 19-5/8 in. (500 mm)

• In case of an installation site where sides A+B+C+D have obsta­cles, the wall heights of sides A+C have no impact on service space

dimensions. Refer to the foregoing gure for impact of wall heights

of sides B+D on service space dimensions.

• In case of an installation site where only the sides A+B have ob-
stacles, the wall heights have no inuence on any indicated service

space dimensions.

INFORMATION

• Please secure enough space in front of the outdoor unit for on-site
installation of the refrigerant piping.

• The service space dimensions in above gure are based on cooling

operation at 95°F (35°C) ambient temperature (standard condi­tions).

• If the design outdoor temperature exceeds 95°F (35°C) or the
heat load exceeds maximum capacity in all the outdoor unit, take
an even large space on the intake shown in gure in 5.2. Service

space.

• If installing snow guard (eld supply), please incorporate the dimen­sions of the snow guard into the unit’s outer dimensions in order to
calculate the necessary amount of space.

• In places with low winter temperatures that may freeze the waste
water created by defrosting during heating operation, please leave
enough space between the bottom frame of the outdoor unit and its
base. (19-11/16 in. (500 mm) to 40 in. (1000 mm) of space is recom­mended.)

INFORMATION

Further specications can be found in the Engineering Data Book.

6. Inspecting, handling and unpacking the unit

6.1. Inspection

At delivery, the unit must be checked and any damage must be re­ported immediately to the carrier’s claims agent.

6.2. Handling

1 When handling the unit, take into account the following:

Fragile, handle the unit with care.

3 Bring the unit as close as possible to its nal installation position in

its original package to prevent damage during transport.

2

4

4
2
1

4

3

3

1 Packaging material

2 Belt sling

3 Opening

4 Protector

4 Lift the unit preferably with a crane and 2 belts of at least 27 ft.

(8 m) long as shown in the gure above.

Always use protectors to prevent belt damage and pay attention to
the position of the unit’s center of gravity.

NOTE

Use a belt sling of ≤3/4 in. (20 mm) wide that adequately bears the
weight of the unit.

A forklift can only be used for transport as long as the unit remains on
its pallet as shown above.

6.3. Unpacking

CAUTION

To avoid injury, do not touch the air inlet or aluminum ns of the unit.

WARNING

Tear apart and throw away plastic packaging bags so that children will
not play with them. Children playing with plastic bags face danger of
death by suffocation.

1 Remove the unit from its packing material.

Take care not to damage the unit when unpacking.

2 Remove the 4 bolts xing the unit to its pallet.

3 Make sure that all accessories as mentioned in 2.1. Accessories

supplied with this unit on page3 are available in the unit.

Keep the unit upright in order to avoid compressor damage.

2 Choose beforehand the path along which the unit is to be brought

in.

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6.4. Installing the unit

Make sure the unit is installed level on a sufciently strong base to

prevent vibration and noise.

NOTE

When the installation height of the unit needs to be increased, do not
use stands to only support the corners.

A

A

A

A

≥3-7/8 in. (100 mm)

X Not allowed

O Allowed

• The height of the foundation must be at least 5-7/8 in. (150 mm )
from the oor.

In heavy snowfall areas, this height should be increased, depending
on the installation place and condition.

• The unit must be installed on a solid longitudinal foundation (steel
beam frame or concrete) and make sure the base under the unit is
larger than the gray marked area.

6

7

A

A

A

1

NOTE

• There are restrictions on the refrigerant pipe connecting order
between outdoor units in the case of the multi system.

See 1.2.2. Outdoor units combinations on page2 for detail.

• When installing on a roof, make sure the roof oor is strong enough

and be sure to waterproof all work.

• Make sure the area around the machine drains properly by setting
up drainage grooves around the foundation.

• Drain water is sometimes discharged from the outdoor unit when it
is running.

• For anti-corrosion type, use nuts with resin washers. If the paint on
nut connections comes off, the anti-corrosion effect may decrease.

Resin washer

6.5. Method for removing shipping plates

The shipping plates installed over the compressor legs for protecting
the unit during transport must be removed. Proceed as shown in the

gure and procedure below. RXLQ72T does not have the shipping

plates.

Shipping plates

3

4

Dimensionsforabovegure

1 Hole for foundation bolt

2 Inner dimension of

2

the base

Distance between

3

foundation bolt holes

f9/16 in. (15 mm) dia: 4 positions

≤24-7/8 in. (631 mm)

29 in. (729 mm)

4 Width of unit 30-3/16 in. (767 mm)

Outer dimension of the

5

base

Longitudinal foundation

6

dimension

Distance between

7

foundation bolt holes

≥30-3/16 in. (767 mm)

48-7/8 in. (1242 mm)

42-3/8 in. (1076 mm)

• Fasten the unit in place using 4 foundation bolts
7/16 in. (M12). It is best to screw in the founda­tion bolts until their length remains 13/16 in. (20
mm) above the foundation surface.

2

5

A

A=13/16 in. (20 mm)

Front

RXLQ96-120T type

1 Remove bolts (2 pcs.) for xing shipping plate.

2 Remove all shipping plates (3 pcs.).

3 Be sure to tighten the removed bolts back again.

Bolt

Shipping plate 2

Shipping plate 3Shipping plate 1

NOTE

If the unit is operated with the shipping plates still attached, abnormal
vibration or noise may be generated.

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7.

Refrigerant pipe size and allowable pipe length

7.1. General information

NOTE

The refrigerant R410A requires strict cautions for keeping the system

clean, dry and tight.

• Clean and dry: foreign materials (including mineral oils or moisture)
should be prevented from getting mixed into the system.

• Tight: R410A does not contain any chlorine, does not destroy

the ozone layer, and does not reduce earth’s protection against
harmful ultraviolet radiation. R410A can contribute slightly to the
greenhouse effect if it is released. Therefore we should take special
attention to check the tightness of the installation.

7.2 . Selection of piping material

NOTE

Piping and other pressure containing parts shall comply with the appli­cable legislation and shall be suitable for refrigerant. Use phosphoric

acid deoxidized seamless copper for refrigerant.

7.3. Selection of piping size

Determine the proper size referring to following tables and reference

gure (only for indication).

x

B B

A

a

C C

b

D

1 2

1-4 VRV indoor unit

a, b Refrigerant branching kit

x Outdoor unit multi connection piping kit

b

3 4

D

NOTE

• All eld piping must be installed by a licensed refrigeration techni­cian and must comply with relevant local and national regulations.

• After piping work is complete, do not under any circumstances open
the stop valve until 9. Field wiring on page18 and 12. Checking of
device and installation conditions on page24 are complete.

• Do not use ux when brazing the refrigerant piping. Use the phos­phor copper brazing ller metal (B-Cu93P-710/795 : ISO 3677)
which does not require ux. Flux has extremely negative effect on
refrigerant piping systems. For instance, if the chlorine based ux is
used, it will cause pipe corrosion or, in particular, if the ux contains
uorine, it will damage the refrigerant oil.

• Use only pipes which are clean inside and outside and which do not
accumulate harmful sulfur, oxidants, dirt, cutting oils, moisture, or

other contamination. (Foreign materials inside pipes including oils
for fabrication must be 0.14 gr/10 ft. (30 mg/10 m) or less.)

• Use the following items for the refrigerant piping.

Material : Jointless phosphor-deoxidized copper pipe.
Size : See 7.3. Selection of piping size to determine the correct

size.
Thickness : Select a thickness for the refrigerant piping which
complies with national and local laws.

• For piping work, follow the maximum tolerated length, difference in

height, and length after a branch indicated in the 7.5. System piping
(length) limitations on page 11.

• Outdoor unit multi connection piping kit and refrigerant branch kit
(sold separately) are needed for connection of piping between
outdoor units (in case of multi system) and piping branches.

• Use only separately sold items selected specically according to

the outdoor unit multi connection piping kit, the refrigerant branch kit
selection in the 7.4. Selection of refrigerant branch kits on page 10.

7.3.1. Pipingbetweenoutdoorunitsand(rst)refrigerant
branch kit: A, B

Choose from the following table in accordance with the outdoor unit
total capacity type, connected downstream.

Outdoor unit capacity

type

RXLQ 72 T type 3/4 in. (19.1 mm)

RXLQ 96 T type 7/8 in. (22.2 mm)

RXLQ 120, 144 T type

RXLQ 192 T type

RXLQ 240 T type 1-3/8 in. (34.9 mm)

Piping outer diameter size

Gas pipe Liquid pipe

3/8 in. (9.5 mm)

1-1/8 in. (28.6 mm)

1/2 in. (12.7 mm)

5/8 in. (15.9 mm)

9 English

7.3. 2 . Piping between refrigerant branch kits: C

Choose from the following table in accordance with the indoor unit
total capacity type, connected downstream. Do not let the connec-

tion piping exceed the refrigerant piping size chosen by the general

system model name.

Indoor unit

capacity index

< 54 5/8 in. (15.9 mm)

72 ≤ × < 111
111 ≤ × < 162
162 ≤ × < 230
230 ≤ × < 300

> 300 1-5/8 in. (41.3 mm)

Example:

Downstream capacity for C = capacity index of unit 1 + capacity index

of unit 2

7.3.3. Piping between refrigerant branch kit and indoor unit: D

Pipe size for direct connection to indoor unit must be the same as the
connection size of the VRV indoor unit.

Indoor unit

capacity index

05, 07, 09, 12, 18 1/2 in. (12.7 mm) 1/4 in. (6.4 mm)

24, 30, 36, 48, 54 5/8 in. (15.9 mm)

96 7/8 in. (22.2 mm)

• When the equivalent pipe length between outdoor and indoor units
is 295 ft. (90 m) or more, the size of the main pipes (both gas side
and liquid side) must be increased. Depending on the length of the
piping, the capacity may drop, but even in such a case it is possible
to increase the size of the main pipes.

• Even as the length of the piping is less than 295 ft. (90 m), it is able

to increase the diameter of piping to improve performance.

Piping outer diameter size

Gas pipe Liquid pipe

3/4 in. (19.1 mm)

7/8 in. (22.2 mm)

1-1/8 in. (28.6 mm)

1-3/8 in. (34.9 mm)

Piping outer diameter size

Gas pipe Liquid pipe

2 3

1

3/8 in. (9.5 mm)54 ≤ × < 72

1/2 in. (12.7 mm)

5/8 in. (15.9 mm)

3/4 in. (19.1 mm)

3/8 in. (9.5 mm)72 3/4 in. (19.1 mm)

5

4

1 Outdoor unit

2 Main pipes (outdoor unit to rst refrigerant branch kit)

3 Increase

4 First refrigerant branch kit

5 Indoor unit

Sizeupforequivalentlengthforoutdoor-indoorunitsover295ft.(90m)

Outdoor unit

capacity type

RXLQ72T type

RXLQ96T type

RXLQ120T type Increase is NOT allowed

RXLQ144T type

RXLQ192T type

RXLQ240T type Increase is NOT allowed

(a) If size is NOT available, increase is NOT allowed.

Gas pipe Liquid pipe

3/4 in. (19.1 mm)

→ 7/8 in. (22.2 mm)

7/8 in. (22.2 mm)

→ 1 in. (25.4 mm)

1-1/8 in. (28.6 mm)

→ 1-1/4 in. (31.8 mm)

(a)

(a)

3/8 in. (9.5 mm)

→ 1/2 in. (12.7 mm)

1/2 in. (12.7 mm)

→ 5/8 in. (15.9 mm)

5/8 in. (15.9 mm)

→ 3/4 in. (19.1 mm)

7.4. Selection of refrigerant branch kits

For piping example, refer to 7.3. Selection of piping size on page9.

• When using REFNET joints at the rst branch from the outdoor

units, choose from the following table in accordance with the capac-

ity of the outdoor unit (example: REFNET joint a - see 7.3. Selection

of piping size).

Outdoor unit capacity type Kit name

RXLQ 72, 96 T type KHRP26A33T9

RXLQ 120-192 T type KHRP26M72TU9

RXLQ 240 T type KHRP26M73TU9

• For REFNET joints other than the rst branch (example REFNET

joint b - see 7.3. Selection of piping size), select the proper branch
kit model based on the total capacity of all indoor units connected
after the refrigerant branch.

Indoor unit capacity index Kit name

< 72 KHRP26A22T9

72 ≤ × < 111
111 ≤ × < 246

≥246 KHRP26M73TU9

• Concerning REFNET headers, choose from the following table in

accordance with the total capacity of all the indoor units connected

after the REFNET header.

Indoor unit capacity index Kit name

< 72

72 ≤ × < 111
111 ≤ × < 230

≥230 KHRP26M73HU9

KHRP26A33T9

KHRP26M72TU9

KHRP26M22H9:

maximum 4 indoor units

or

KHRP26M33H9:

maximum 8 indoor units

KHRP26M33H9

KHRP26M72H9

INFORMATION

Maximum 8 branches can be connected to a header.

• How to choose an outdoor multi connection piping kit (needed if the

outdoor unit capacity type is 144 or more). Choose from the follow­ing table in accordance with the number of outdoor units.

Number of outdoor units Branch kit name

2 BHFP22P100U

10English

7.5. Systempiping(length)limitations

7.5.1. Piping length restrictions

Make sure to perform the piping installation within the range of the
maximum allowable pipe length, allowable height difference and al­lowable length after branching as indicated below.

Denitions

Actual piping length: pipe length between outdoor

Equivalent piping length: pipe length between outdoor

(1)

and indoor units.

(1)

and indoor

units. (Assume equivalent piping length of refnet joint = 1.6 ft. (0.5m)

and refnet header = 3.3 ft. (1 m) (for calculation purposes of equivalent
piping length, not for refrigerant charge calculations).)
Total piping length: total piping length from the outdoor

(1)

to all indoor

units.

(1) If the system capacity type is > 120, the distance will be

from the rst outdoor unit branch to indoor units.

11 English

7.5. 2 . System only containing VRV indoor units

H1

System setup

Branch with refnet joint Branch with refnet joint and refnet header Branch with refnet header

Single outdoor

b c d e f

a

A

B C D E F G

h i j k l m n

1 2 3 4 5 6 7

Example 1.1

Multi outdoor

Indoor unit

Refnet joint

Refnet header

Outdoor multi con-

a

H3

r

s

b c d e f

A

B C D E F G

h i j k l m n

1 2 3 4 5 6 7

Example 2.1

nection piping kit

Difference in height between outdoor and indoor units: H1.
Difference in height between indoor and indoor units: H2.
Difference in height between outdoor and outdoor units: H3.

Example 3: with standard multi layout

r s

g

H1

p

8

H2

a

H1

c d e f

1 2 3 4 5 6

i

A

B

g h

j

7 8

k

H2

b

Example 1.2

H3

s

r

g

p

8

a

b

c d e f g h

1 2 3 4 5 6

BA

H2

j k

7 8

H1

Example 2.2

a

cb d e fig h

1 2 3 4 5 6 7

Example 1.3

H3

s

r

a

b

c d e f g h i

1 2 3 4 5 6 7

Example 2.3

H1

8

H2

H1

8

Maximum allowable length

• Between outdoor and indoor units (standard multi/free multi combinations).

Actual piping
length

540 ft.
(165 m)

Example 1.1

unit 8: a+b+c+d+e+f+g+p≤540 ft. (165 m)

Example 2.1

unit 8: a+b+c+d+e+f+g+p≤540 ft. (165 m)

Equivalent length 623 ft. (2)

— — —

(190 m)

Total piping length 1640 ft.

(500 m)

Example 1.1

a+b+c+d+e+f+g+h+i+j+k+l+m+n+p≤1640 ft. (500 m)

Example 2.1

a+b+c+d+e+f+g+h+i+j+k+l+m+n+p≤1640 ft. (500 m)

(2) See [7.3.3]= on page 10.

• Between outdoor branch and outdoor unit
(in case of multi outdoor units).

(only in case ≥144 type)

Actual piping
length

33 ft. (10 m) Example 3

r≤33 ft. (10 m)
s≤33 ft. (10 m)

Equivalent length 43 ft. (13 m)

—

Example 1.2

unit 6: a+b+h≤540 ft. (165 m)

Example 1.3

unit 8: a+i≤540 ft. (165 m)

unit 8: a+i+k≤540 ft. (165 m)

Example 1.2

a+b+c+d+e+f+g+h+i+j+k
≤1640 ft. (500 m)

Example 1.3

a+b+c+d+e+f+g+h+I
≤1640 ft. (500 m)

Maximum allowable height difference

H1

≤164 ft. (50 m ) (130 ft. (40 m)

H2

≤98 ft. (30 m)

H3

≤16 ft. (5 m)

(a) Conditional extension up till 295 ft. (90 m) is possible without additional option

kit:

In case the outdoor location is higher than indoor: extension is possible up till

295 ft. (90 m) and following 2 conditions must be fullled:

• Liquid piping size up (see table Size up for equivalent length for outdoor-
indoor units over 295 ft. (90 m) on page10).

• Dedicated setting on outdoor unit is required (see [2-49]= on page34).

In case the outdoor location is lower than indoor: extension is possible up till

295ft. (90 m) and following 6 conditions must be fullled:

• Liquid piping size up (see table Size up for equivalent length for outdoor-
indoor units over 295 ft. (90 m) on page10).

• Dedicated setting on outdoor unit is required (see [2-35]= on page34).

(a)

(if outdoor is located below indoor units))

12English