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1. Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. Selecting the installation location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Installation diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Drain piping for outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5. Refrigerant piping work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6. Electrical work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Note: This symbol mark is for EU countries only.
This symbol mark is according to the directive 2012/19/EU Article 14 Information for users and Annex IX.
Your MITSUBISHI ELECTRIC product is designed and manufactured with high quality materials and components which can be recycled and reused.
This symbol means that electrical and electronic equipment, at their end-of-life, should be disposed of separately from your household waste.
Please, dispose of this equipment at your local community waste collection/recycling centre.
In the European Union there are separate collection systems for used electrical and electronic product.
Please, help us to conserve the environment we live in!
CAUTION:
• Do not vent R32 into the atmosphere.
1. Safety precautions
► Before installing the unit, make sure you read all the "Safety precautions".
en
► Please report to or take consent by the supply authority before connec-
tion to the system.
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WARNING:
Describes precautions that must be observed to prevent danger of injury or
death to the user.
CAUTION:
Describes precautions that must be observed to prevent damage to the unit.
MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT
WARNING
(Risk of fire)
Read the OPERATION MANUAL carefully before operation.
Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL before operation.
Further information is available in the OPERATION MANUAL, INSTALLATION MANUAL, and the like.
WARNING:
• The unit must not be installed by the user. Ask a dealer or an authorized
technician to install and repair the unit. If the unit is installed incorrectly,
water leakage, electric shock, or fire may result.
• For installation and relocation work, follow the instructions in the Installa-
tion Manual and use tools and pipe components specifically made for use
with R32 refrigerant. If pipe components not designed for R32 refrigerant
are used and the unit is not installed correctly, the pipes may burst and
cause damage or injuries. In addition, water leakage, electric shock, or fire
may result.
• The unit must be installed according to the instructions in order to minimize
the risk of damage from earthquakes, typhoons, or strong winds. An incor-
rectly installed unit may fall down and cause damage or injuries.
• The unit must be securely installed on a structure that can sustain its
weight. If the unit is mounted on an unstable structure, it may fall down and
cause damage or injuries.
• If the air to water heat pump is installed in a small room, measures must be
taken to prevent the refrigerant concentration in the room from exceeding
the safety limit in the event of refrigerant leakage. Consult a dealer regard-
ing the appropriate measures to prevent the allowable concentration from
being exceeded. Should the refrigerant leak and cause the concentration
limit to be exceeded, hazards due to lack of oxygen in the room may result.
• Ventilate the room if refrigerant leaks during operation. If refrigerant comes
into contact with a flame, poisonous gases will be released.
1
For safe and correct use, read this manual and the indoor unit installation manual thoroughly before installing the outdoor unit.
English is original. The other languages versions are translation of the original.
This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of outdoor unit.
In case that refrigerant type is R32, this unit uses a flammable refrigerant.
If refrigerant leaks and comes in contact with fire or heating part, it will create harmful gas and there is risk of fire.
7. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8. Water piping work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9. Pumping down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
10. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
11. Serial number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
After installation work has been completed, explain the "Safety Precautions," use,
and maintenance of the unit to the customer according to the information in the
Operation Manual and perform the test run to ensure normal operation. Both the
Installation Manual and Operation Manual must be given to the user for keeping.
These manuals must be passed on to subsequent users.
: Indicates a part which must be grounded.
WARNING:
Carefully read the labels affixed to the main unit.
/ : Indicates warnings and cautions when using R32 refrigerant.
• All electric work must be performed by a qualified technician according to
local regulations and the instructions given in this manual. The units must
be powered by dedicated power lines and the correct voltage and circuit
breakers must be used. Power lines with insufficient capacity or incorrect
electrical work may result in electric shock or fire.
• Use C1220 copper phosphorus, for copper and copper alloy seamless
pipes, to connect the refrigerant pipes. If the pipes are not connected cor-
rectly, the unit will not be properly grounded and electric shock may result.
• This appliance is intended to be used by expert or trained users in shops, in
light industry and on farms, or for commercial use by lay persons.
• Use only specified cables for wiring. The wiring connections must be made
securely with no tension applied on the terminal connections. Also, never
splice the cables for wiring (unless otherwise indicated in this document).
Failure to observe these instructions may result in overheating or a fire.
• If the supply cord is damaged, it must be replaced by the manufacturer, its
service agent or similarly qualified persons in order to avoid hazard.
• The appliance shall be installed in accordance with national wiring regula-
tions.
• The terminal block cover panel of the outdoor unit must be firmly attached.
If the cover panel is mounted incorrectly and dust and moisture enter the
unit, electric shock or fire may result.
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