DAIKIN RXYMQ36PVJU, RXYMQ48PVJU INSTALLATION MANUAL

INSTALLATION MANUAL

System air conditioner

RXYMQ36PVJU
RXYMQ48PVJU

Installation manual

VRVIII-S System air conditioner

Manuel d’installation

Conditionneur d’air VRV

Manual de instalación

Acondicionador de aire con sistema VRVIII-S

Read these instructions carefully before installation.
Keep this manual in a handy place for future reference.
This manual should be left with the equipment owner.

Lire soigneusement ces instructions avant l’installation.
Conserver ce manuel à portée de main pour référence ultérieure.
Ce manuel doit être donné au propriétaire de l’équipement.

Lea cuidadosamente estas instrucciones antes de instalar.
Guarde este manual en un lugar a mano para leer en caso de tener alguna
duda.
Este manual debe permanecer con el propietario del equipo.

III-

S System

English

Français

Español

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RXYMQ36PVJU
RXYMQ48PVJU

III

VRV

-S System air conditioner

CONTENTS

1. SAFETY CONSIDERATIONS..................................................1

2. INTRODUCTION...................................................................... 2

2-1. Combination......................................................................3

2-2. Standard operation limit .................................................... 3

2-3. Spec list ............................................................................ 3

2-4. Electrical properties ..........................................................3

2-5. Standard supplied accessories ......................................... 3

2-6. Option accessory .............................................................. 3

3. BEFORE INSTALLATION........................................................3

4. SELECTING INSTALLATION SITE ......................................... 4

5. PRECAUTIONS ON INSTALLATION ...................................... 5

6. FIELD WIRING......................................................................... 6

6-1. Wiring connection example for whole system...................6

6-2. How to lay the power supply wiring and

transmission wiring............................................................ 6

6-3. How to connect the power supply wiring........................... 7

6-4. Transmission wiring connection procedure....................... 7

7. PRECAUTIONS ON REFRIGERANT PIPING......................... 7

7-1. Installation tools ................................................................7

7-2. Selecting piping material................................................... 8

7-3.

Protection against contamination when installing pipes

7-4. Pipe connection ................................................................8

7-5. Connecting the refrigerant piping......................................8

7-6. Heat insulation of piping.................................................... 9

7-7. Example of connection.................................................... 10

7-8. Air tight test and vacuum drying...................................... 11

8. ADDITIONAL REFRIGERANT CHARGE .............................. 12

8-1. Before adding refrigerant ................................................ 12

8-2. Checking the refrigerant tank..........................................12

8-3. Adding refrigerant ........................................................... 12

9. POST-WORK CHECKS ......................................................... 12

10. TEST RUN ............................................................................. 12

10-1.Power On–Check Operation .......................................... 12

10-2.Temperature control operation checklist........................ 13

11. CAUTION FOR REFRIGERANT LEAKS ............................... 14

........ 8

1. SAFETY CONSIDERATIONS

Read these “SAFETY CONSIDERATIONS for Installation” carefully
before installing air conditioning equipment. 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 leakage, electrical
shock, fire, or explosion.
Meanings of DANGER, WARNING, CAUTION, and NOTE Symbols:

DANGER

WARNING

CAUTION

.......Indicates an imminently hazardous situation which,

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

.....Indicates a potentially hazardous situation which, if

not avoided, could result in death or serious injury.

......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 prac-

tices.

Installation manual

.............Indicates situations that may result in equipment or

NOTE

property-damage accidents only.

DANGER

• Refrigerant gas is heavier than air and replaces oxygen. A mas­sive leak can lead to oxygen depletion, especially in base­ments, and an asphyxiation hazard could occur leading to
serious injury or death.

• Do not ground units to water pipes, gas pipes, telephone wires,
or lightning rods as incomplete grounding can cause a severe
shock hazard resulting in severe injury or death. Additionally,
grounding to gas pipes could cause a gas leak and potential
explosion causing severe injury or death.

• If refrigerant gas leaks during installation, ventilate the area
immediately. Refrigerant gas may produce toxic gas if it comes
in contact with fire. Exposure to this gas could cause 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 flammable materials are
present due to risk of explosions that can cause serious 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 may cause
injuries or death by suffocation.

WARNING

• Only qualified personnel must carry out the installation work.
Installation must be done in accordance with this installation
manual. Improper installation may result in water leakage, elec­tric shock, or fire.

• 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, can lead to oxygen deficiency.

• Use only specified accessories and parts for installation work.
Failure to use specified parts may result in water leakage, elec­tric shocks, fire, or the unit falling.

• Install the air conditioner on a foundation strong enough that it
can withstand the weight of the unit. A foundation of insuffi­cient strength may result in the unit falling and causing injuries.

• Take into account strong winds, typhoons, or earthquakes
when installing. Improper installation may 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 qualified
personnel according to local state, and national regulations. An
insufficient power supply capacity or improper electrical con­struction may lead to electric shocks or fire.

• Make sure that all wiring is secured, that specified wires are
used, and that no external forces act on the terminal connec­tions or wires. Improper connections or installation may result
in fire.

• When wiring, position the wires so that the terminal box lid can
be securely fastened. Improper positioning of the terminal box
lid may result in electric shocks, fire, or the terminals overheat­ing.

• Before touching electrical parts, turn off the unit.

• Be sure to install a ground fault circuit interrupter if one is not

already available. This helps prevent electrical shocks or fire.

1 English

• Securely fasten the outside unit terminal cover (panel). If the

terminal cover/panel is not installed properly, dust or water may
enter the outside unit causing fire or electric shock.

• When installing or relocating the system, keep the refrigerant
circuit free from substances other than the specified refrigerant
(R-410A) such as air. Any presence of air or other foreign sub­stance in the refrigerant circuit can cause an 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 speci­fied by Daikin are used, fire or explosion may occur.

CAUTION

• Do not touch the switch with wet fingers. Touching a switch
with wet fingers can cause electric shock.

• Do not allow children to play on or around the unit to prevent
injury.

• 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 flowing through the
refrigerant piping, compressor, and other refrigerant cycle
parts. Your hands may suffer 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.

• Heat exchanger fins are sharp enough to cut.
To avoid injury wear glove or cover the fins when working
around them.

• Install drain piping to 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 turn off the power immediately after stopping operation.

Always wait for at least 5 minutes before turning off the power.
Otherwise, water leakage may occur.

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

• Refrigerant R-410A 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 -- R-410A does not contain any chlorine, does not

destroy the ozone layer, and does not reduce the earth’s pro­tection again harmful ultraviolet radiation. R-410A 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 R-410A 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 R-410A. 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 can be
shorter than expected in rooms with electronic fluorescent
lamps (inverter or rapid start types). Install the indoor unit far
away from fluorescent lamps as much as possible.

• Indoor units are for indoor installation only. Outdoor units can
be installed either outdoors or indoors.

• Do not install the air conditioner in the following locations:
(a) Where a mineral oil mist or oil spray or vapor is produced,

for example, in a kitchen.
Plastic parts may deteriorate and fall off or result in water
leakage.

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

duced.
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 flammable gas may leak, where there is carbon fiber,

or ignitable dust suspension in the air, or where volatile
flammables such as thinner or gasoline are handled. Operat­ing the unit in such conditions can cause a fire.

• Take adequate measures to prevent the outside unit from being
used as a shelter by small animals. Small animals making con­tact with electrical parts can cause malfunctions, smoke, or
fire. Instruct the customer to keep the area around the unit
clean.

NOTE

• Install the power supply and control wires for the indoor and
outdoor units at least 3.5 feet away from televisions or radios to
prevent image interference or noise. Depending on the radio
waves, a distance of 3.5 feet may not be sufficient 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 flow check valve, refrigerant charge base, vacuum
gauge, or refrigerant recovery equipment.

• If the conventional refrigerant and refrigerator oil are mixed in
R-410A, the refrigerant may deteriorate.

• This air conditioner is an appliance that should not be accessi­ble to the general public.

• The wall thickness of field-installed pipes should be selected in
accordance with the relevant local, state, and national regula­tions.

2. INTRODUCTION

1.

This series uses R410A new refrigerant. Be absolutely sure to com­ply with “7. PRECAUTIONS ON REFRIGERANT PIPING”, because
even greater caution is needed to prevent impurities from entering
R410A (mineral oils and water).

2.

The design pressure is 478PSI (3.3MPa), which means that piping
may be thicker than conventionally, so please refer to “7. PRECAU-
TIONS ON REFRIGERANT PIPING”.

3.

This is a mixed refrigerant, so charge as a liquid when adding refrig­erant.
(If charged as a gas, the composition of the refrigerant may change,
preventing normal operation.)

4.

The indoor unit must use R410A. See the catalog for indoor unit
models which can be connected. (Normal operation is not possible
when connected to other units.)

5.

The power supply of this series is single-phase, 208/230V, 60Hz.

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