Daikin Quaternity H-Series, Engineeiring Data

Installation Manual

EDUS04-906_b

20

Room Air Conditioners H-Series

11. Installation Manual

11.1

Indoor Units

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 
leakage, electrical shock, fire, 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.  

• 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 into 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.

• 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 or heat pump 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.

• It is recommended to install a ground fault circuit 

interrupter if one is not already available. This helps 
prevent electrical shocks or fire.

• 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.