Installation Information - Mitsubishi Electric Y Series Manual

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nstallation Information
* Refer to the enclosed Installation Manual for details on installation. Arrange to have an expert install the
system correctly.
1. General precautions
1-1. Usage
♦The air-conditioning system described in this catalogue is designed for human comfort.
♦This product is not designed to assist in the preservation of food, provide conditions to maintain plants or
animals, or stabilize environments for the preservation of precision equipment or art objects. To prevent loss of
quality, do not use the product for purposes other than those it is designed for.
♦To reduce the risk of water leakage and electric shock, do not use the product for air-conditioning vehicles or
vessels.
1-2. Installation environment
♦Do not install any unit other than the dedicated unit in an area where the voltage changes significantly, large
amounts of mineral oil (e.g., cutting oil) are present, cooking oil may splash, or a large quantity of steam can
be generated, such as a kitchen.
♦Do not install the unit in acidic or alkaline environments.
♦Installation should not be performed in locations exposed to chlorine or other corrosive gases. Avoid installation
near sewers.
♦To reduce the risk of fire, do not install the unit in an area where flammable gas may leak or flammable material
is present.
♦This air-conditioning unit has a built-in microcomputer. The effects of noise should be taken into consideration
when deciding on the installation position. It is recommended that the air-conditioning unit be installed in a
position away from antennas or electronic devices.
♦Install the unit on a solid foundation in accordance with local safety measures against typhoons, wind gusts,
and earthquakes to prevent the unit from being damaged, toppling over, or falling.
1-3. Backup system
♦In regions in which the malfunctioning of the air conditioner may have a critical effect, it is recommended to
have two or more systems made up of single outdoor/heat source units and multiple indoor units.
1-4. Unit characteristics
♦The heat pump efficiency of the outdoor unit depends on the outdoor temperature. In heating mode,
performance drops as the outside air temperature drops. In cold climates, performance can be poor. Warm
air will continue to be trapped near the ceiling and the floor level will remain cold. In such cases, heat pumps
require a supplemental heating system or air circulator. Before purchasing, consult your local distributor for
assistance in selecting the unit and system.
♦When the outdoor temperature is low and the humidity is high, the heat exchanger on the outdoor/heat source
unit side tends to collect frost, which reduces its heating performance. The Auto-defrost function will be
activated in order to remove the frost, and the heating mode will temporarily stop for 3-10 minutes. Heating
mode will automatically resume upon completion of the defrost process.
♦An air conditioner with a heat pump requires time to warm up the whole room after the heating operation
begins, because the system circulates warm air in order to warm up the whole room.
♦Sound levels were obtained in an anechoic room. Sound levels during actual operation are usually higher than
the simulated values due to ambient noise and echoes. Refer to the section on "SOUND LEVELS" in the DATA
BOOK for the measurement location.