Daikin VRV 5 RXYA8A7Y1B Installation And Operation Manual page 5

CAUTION
This equipment is NOT intended for use in residential
locations and will NOT guarantee to provide adequate
protection to radio reception in such locations.
CAUTION
Excessive refrigerant concentrations in a closed room can
lead to oxygen deficiency.
WARNING
If the appliance contains R32 refrigerant, the floor area of
the room in which the appliance is stored shall be at least
956 m².
WARNING
If one or more rooms are connected to the unit using a
duct system, make sure:
▪ there are no operating ignition sources (example: open
flames, an operating gas appliance or an operating
electric heater) in case the floor area is less than the
minimum floor area A (m²).
▪ no auxiliary devices, which may be a potential ignition
source, are installed in the duct work (example: hot
surfaces with a temperature exceeding 700°C and
electric switching device);
▪ only auxiliary devices approved by the manufacturer
are used in the duct work;
▪ air inlet AND outlet are connected directly to the same
room by ducting. Do NOT use spaces such as a false
ceiling as a duct for the air inlet or outlet.
Opening the unit (see "14.2 Opening the
DANGER: RISK OF BURNING/SCALDING
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF ELECTROCUTION
Do NOT leave the unit unattended when the service cover
is removed.
Mounting the outdoor unit (see
unit" [ 4 28])
WARNING
Fixing method of the outdoor unit MUST be in accordance
with the instructions from this manual. See
unit" [ 4 28].
the outdoor
Connecting the refrigerant piping (see
piping" [ 4 32])
refrigerant
WARNING
Field piping MUST be in accordance with the instructions
from this manual. See "15 Piping
CAUTION
Piping MUST be installed according to instructions given in
installation" [ 4 29]. Only mechanical joints (e.g.
"15 Piping
braze+flare connections) that are compliant with the latest
version of ISO14903 can be used.
Low temperature solder alloys shall not be used for pipe
connections.
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P739915-1 – 2023.12
unit" [ 4 28])
"14.3 Mounting the outdoor
"14.3 Mounting
"15.2 Connecting the
installation" [ 4 29].
2 Specific installer safety instructions
CAUTION
▪ Do NOT use mineral oil on flared part.
▪ Do NOT reuse piping from previous installations.
▪ NEVER install a drier to this unit to guarantee its
lifetime. The drying material may dissolve and damage
the system.
CAUTION
Install the refrigerant piping or components in a position
where they are unlikely to be exposed to any substance
which may corrode components containing refrigerant,
unless the components are constructed of materials that
are inherently resistant to corrosion or are suitably
protected against corrosion.
WARNING
Take sufficient precautions in case of refrigerant leakage. If
refrigerant gas leaks, ventilate the area immediately.
Possible risks:
▪ Excessive refrigerant concentrations in a closed room
can lead to oxygen deficiency.
▪ Toxic gas might be produced if refrigerant gas comes
into contact with fire.
WARNING
ALWAYS recover the refrigerant. Do NOT release them
directly into the environment. Use a vacuum pump to
evacuate the installation.
WARNING
During tests, NEVER pressurise the product with a
pressure higher than the maximum allowable pressure (as
indicated on the nameplate of the unit).
CAUTION
Do NOT vent gases into the atmosphere.
WARNING
Any gas or oil remaining inside the stop valve may blow off
the pinched piping.
Failure to observe the instructions in procedure below
properly may result in property damage or personal injury,
which may be serious depending on the circumstances.
WARNING
NEVER remove the pinched piping by brazing.
Any gas or oil remaining inside the stop valve may blow off
the pinched piping.
Installation and operation manual
5