Specifications

Installation and operation manual
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RXYQQ8~20T7Y1B
VRV IV System Air Conditioner
4P345099-1 – 2013.04
 The refrigerant R410A itself is nontoxic, non-flammable and is
safe. If the refrigerant should leak however, its concentration
may exceed the allowable limit depending on room size. Due to
this, it could be necessary to take measures against leakage.
Refer to "18. Caution for refrigerant leaks" on page 47.
 Do not install in the following locations:
- Locations where sulphurous acids and other corrosive gases
may be present in the atmosphere. Copper piping and
soldered joints may corrode, causing refrigerant to leak.
- Locations where a mineral oil mist, spray or vapour may be
present in the atmosphere. Plastic parts may deteriorate and
fall off or cause water leakage.
- Locations where equipment that produces electromagnetic
waves is found. The electromagnetic waves may cause the
control system to malfunction, preventing normal operation.
- Locations where flammable gases may leak, where thinner,
gasoline and other volatile substances are handled, or where
carbon dust and other incendiary substances are found in the
atmosphere. Leaked gas may accumulate around the unit,
causing an explosion.
 When installing, take strong winds, typhoons or earthquakes into
account, improper installation may result in the unit turning over.
6.2. Weather related precautions
 Select a place where the rain can be avoided as much as
possible.
 Be sure that the air inlet of the unit is not positioned towards the
main wind direction. Frontal wind will disturb the operation of the
unit. If necessary, use a screen to block the wind.
 Ensure that water cannot cause any damage to the location by
adding water drains to the foundation and prevent water traps in
the construction.
 Do not install the unit in areas where the air contains high levels
of salt such as that near the ocean.
6.3. Selecting a location in cold climates
To prevent exposure to wind and snow, install a baffle plate on the air
side of the outdoor unit:
1 Baffle plate
In heavy snowfall areas it is very important to select an installation
site where the snow will not affect the unit. If lateral snowfall is
possible, make sure that the heat exchanger coil is not affected by
the snow (if necessary construct a lateral canopy). Install the unit
high enough from the ground to prevent burying in snow.
1 Construct a large canopy.
2 Construct a pedestal.
NOTICE
When operating the unit in a low outdoor ambient
temperature, be sure to follow the instructions described
below.
NOTICE
When operating the unit in a low outdoor ambient
temperature with high humidity conditions, make sure to
take precautions to keep the drainholes of the unit free by
using proper equipment. For more information contact your
local dealer.
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