About The System; System Layout; User Interface; Operation - Daikin VRV IV+ RXYTQ8U5/U7YF Installation And Operation Manual

4 About the system

CAUTION: Pay attention to the fan!
It is dangerous to inspect the unit while
the fan is running.
Make sure to turn OFF the main switch
before executing any maintenance
task.
CAUTION
After a long use, check the unit stand
and fitting for damage. If damaged, the
unit may fall and result in injury.
WARNING
NEVER replace a fuse with a fuse of a
wrong ampere ratings or other wires
when a fuse blows out. Use of wire or
copper wire may cause the unit to
break down or cause a fire.
WARNING
▪ Do NOT modify, disassemble,
remove, reinstall or repair the unit
yourself as incorrect dismantling or
installation may cause an electrical
shock or fire. Contact your dealer.
▪ In case of accidental refrigerant
leaks, make sure there are no naked
flames. The refrigerant itself is
entirely safe, non-toxic and non-
combustible, but it will generate toxic
gas when it accidentally leaks into a
room where combustion air from fan
heaters, gas cookers, etc. is present.
ALWAYS have qualified service
personnel confirm that the point of
leakage has been repaired or
corrected before resuming operation.
WARNING
Stop operation and shut OFF the
power if anything unusual occurs
(burning smells etc.).
Leaving the unit running under such
circumstances may cause breakage,
electrical shock or fire. Contact your
dealer.
Installation and operation manual
6
WARNING
The refrigerant in the system is safe
and normally does not leak. If the
refrigerant leaks in the room, contact
with a fire of a burner, a heater or a
cooker may result in a harmful gas.
Turn off any combustible heating
devices, ventilate the room and contact
the dealer where you purchased the
unit.
Do NOT use the system until a service
person confirms that the portion where
the refrigerant leaks is repaired.
CAUTION
NEVER expose little children, plants or
animals directly to the airflow.
CAUTION
Do NOT touch the heat exchanger fins.
These fins are sharp and could result
in cutting injuries.
4 About the system
The indoor unit part of VRV IV heat pump system can be used for
heating/cooling applications. The type of indoor unit which can be
used depends on the outdoor units series.
NOTICE
Do NOT use the system for other purposes. In order to
avoid any quality deterioration, do NOT use the unit for
cooling precision instruments, food, plants, animals, or
works of art.
NOTICE
For future modifications or expansions of your system:
A full overview of allowable combinations (for future
system extensions) is available in technical engineering
data and should be consulted. Contact your installer to
receive more information and professional advice.
4.1

System layout

5

User interface

This operation manual offers a non-exhaustive overview of the main
functions of the system.
6

Operation

6.1

Operation range

Use the system in the following temperature and humidity ranges for
safe and effective operation.
VRV IV+ heat pump for high ambient temperatures
RXYTQ
4P546223-1C – 2021.11