Daikin RWEYQ144PTJU, Installation Manual

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RWEYQ72PTJU RWEYQ168PTJU
RWEYQ84PTJU RWEYQ216PTJU
RWEYQ144PTJU RWEYQ252PTJU
VRV-W
III
System air conditioner
Installation manual
1 English
CONTENTS
1. SAFETY CONSIDERATIONS...................................................... 1
2. INTRODUCTION.......................................................................... 3
2-1. Combination .......................................................................... 3
2-2. Standard operation limit ........................................................ 3
2-3. Standard supplied accessories ............................................. 3
2-4. Option accessory .................................................................. 3
2-5. Technical specifications (1)................................................... 4
2-6. Electrical specifications ......................................................... 4
3. SELECTION OF LOCATION ....................................................... 5
4. INSPECTING AND HANDLING THE UNIT ................................. 5
5. UNPACKING AND PLACING THE UNIT..................................... 5
6. WATER PIPING WORK............................................................... 6
7. HANDLING OF THE BRAZED PLATE TYPE HEAT
EXCHANGER .............................................................................. 6
7-1. When designing the equipment ............................................ 6
7-2. Before starting a test run....................................................... 6
7-3. Daily service and maintenance ............................................. 7
7-4. Water quality ......................................................................... 7
7-5. Maintenance of plate type heat exchanger ........................... 7
8. FIELD WIRING............................................................................. 8
8-1. Optional parts........................................................................ 8
8-2. Power circuit and cable requirements ................................... 8
8-3. General ................................................................................. 8
8-4. Examples .............................................................................. 8
8-5. In case of a local setting ..................................................... 10
9. REFRIGERANT PIPING ............................................................ 11
9-1. Selection of piping material ................................................. 11
9-2. Protection against contamination when installing pipes........ 11
9-3. Pipe connection .................................................................. 11
9-4. Connecting the refrigerant piping ........................................ 12
9-5. Example of connection........................................................ 13
9-6. Air tight test and vacuum drying.......................................... 14
9-7. Pipe insulation..................................................................... 14
9-8. Checking of device and installation conditions.................... 14
9-9. Additional refrigerant charge ............................................... 14
9-10.Stop valve operation procedure ......................................... 15
10. CHECKS AFTER INSTALLATION............................................. 16
11. TEST RUN ................................................................................. 16
11-1.Air discharge ...................................................................... 16
11-2.Before turn on the power supply ........................................ 16
11-3.Check operation................................................................. 16
11-4.Check of normal operation................................................. 17
12. CAUTION FOR REFRIGERANT LEAKS ................................... 17
1. SAFETY CONSIDERATIONS
Read these SAFETY CONSIDERATIONS for Installation carefully
before installing air conditioning equipment. After completing the instal-
lation, make sure that the unit operates properly during the startup oper-
ation.
Instruct the customer on how to operate and maintain the unit. Inform
customers that they should store this Installation Manual with the Oper-
ation 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 .................... Indicates an imminently hazardous situa-
tion 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.
DANGER
• Refrigerant gas is heavier than air and replaces oxygen. A
massive leak can lead to oxygen depletion, especially in base-
ments, and an asphyxiation hazard could occur leading to se-
rious 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. Addi-
tionally, 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 refriger-
ant 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 ac-
cordance with federal/state/local laws or ordinances. Packing
materials such as nails and other metal or wood parts, includ-
ing 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 insuffi-
cient 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 connec-
tions or wires. Improper connections or installation may re-
sult in fire.