37MGHAQ: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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1. Installation (where refrigerant pipes are allowed)
Any person who is involved with working on or breaking into a
refrigerant circuit should hold a current valid certificate from an
industry-accredited assessment authority, which authorizes their
competence to handle refrigerants safely in accordance with an
industry recognized assessment specification.
Maintenance and repair requiring the assistance of other skilled
personnel shall be carried out under the supervision of the person
competent in the use of flammable refrigerants.
That the installation of pipe-work shall be kept to a minimum.
That pipe-work shall be protected from physical damage.
Where refrigerant pipes shall be compliance with national gas
regulations.
That mechanical connections shall be accessible for maintenance
purposes.
Be more careful that foreign matter (oil, water, etc) does not enter
the piping.
Also, when storing the piping, securely seal the opening by
pinching, taping, etc.
All working procedure that affects safety means shall only be carried
by competent persons.
Appliance shall be stored in a well ventilated area where the room
size corresponds to the room area as specified for operation.
Joints shall be tested with detection equipment with a capability of 5
g/year of refrigerant or better, with the equipment in standstill and
under operation or under a pressure of at least these standstill or
operation conditions after installation. Detachable joints shall NOT
be used in the indoor side of the unit (brazed, welded joint could be
used).
In cases that require mechanical ventilation, ventilation openings
shall be kept clear of obstruction.
Turn off the air conditioner and disconnect the power before
performing any installation or repairing. Failure to do so can cause
electric shock.
Installation must be performed by an authorized dealer or specialist.
Defective installation can cause water leakage, electrical shock, or
fire. Installation must be performed according to the installation
instructions.
Improper installation can cause water leakage, electrical shock, or
fire. Contact an authorized service technician for repair or
maintenance of this unit. This appliance shall be installed in
accordance with national wiring regulations.
Only use the included accessories, parts, and specified parts for
installation. Using non-standard parts can cause water leakage,
electrical shock, fire, and can cause the unit to fail.
Install the unit in a firm location that can support the unit’s weight.
If the chosen location cannot support the unit’s weight, or the
installation is not done properly, the unit may drop and cause
serious injury and damage. Install drainage piping according to the
instructions in this manual. Improper drainage may cause water
damage to your home and property. For units that have an auxiliary
electric heater, do not install the unit within 3 feet (1 meter) of any
combustible materials.
If combustible gas accumulates around the unit, it may cause fire.
Do not turn on the power until all work has been completed. When
moving or relocating the air conditioner, consult experienced
service technicians for disconnection and re-installation of the unit.
Read the information for details in “indoor unit installation” and
“outdoor unit installation” sections.
WA R N I N G
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or
death.
Before installing, modifying, or servicing system, the main
electrical disconnect switch must be in the OFF position. There
may be more than 1 disconnect switch. Lock out and tag switch
with a suitable warning label.
WA R N I N G
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing oxygen
for leak testing or operating refrigerant
compressors. Pressurized mixtures of air
or gases containing oxygen can lead to an
explosion.
WARNING
FOR FLAMMABLE REFRIGERANTS
Do not use means to accelerate the defrosting process or to clean,
other than those recommended by the manufacturer.
The appliance shall be stored in a room without continuously
operating ignition sources (for example: open flames, an operating
gas appliance or an operating electric heater).
Do not pierce or burn.
Be aware that refrigerants may not contain an odor.
WA R N I N G
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or
improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe in the
ground. If any section of pipe is buried, there must be a 6 in. (152
mm) vertical rise to the valve connections on the outdoor units. If
more than the recommended length is buried, refrigerant may migrate
to the cooler buried section during extended periods of system
shutdown. This causes refrigerant slugging and could possibly
damage the compressor at start-up.
CAUTION
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