Hitachi RPIH-3.0HNAUB1Q, Operation Installation Maintenance Manual, Page: 3 / 24

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This manual should be considered as a permanent part of the air conditioning equipment. Please keep it properly.
Hitachi pursues a policy of continuous improvement in design and performance of products. The right is therefore reserved
to change specifications without notice.
Our company shall not be held responsible for any occasional damage to the air conditioner that arises during its operation
in specific environment.
This air conditioner is designed for standard air conditioning only. Do not use it for other purposes such as drying cloth,
refrigerating foods or for any other cooling or heating processes. Please don't install the air conditioner in the following
environments. Otherwise, fire, machine deformation or failure may arise.
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Places with spatter of oil (including machine oil).
Places with inflammable gases.
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Places with sulfurated gases or silicon (e.g. hot spring, etc.).
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Coastal areas with much salt or places exposed to strong acids or bases
that may cause corrosion to machine.
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Signal words (DANGER, WARNING and CAUTION) are used to indicate hazard seriousness. Definitions of the hazard levels
are provided below with respective signal words.
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Please don't perform installation works such as refrigerant piping connection, drain pipe connection, and wiring connection without
reading the Installation Manual. Violations may result in system leakage, electrical failure or fire.
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Do not pour water into the indoor or outdoor unit. This machine is an electric product that may develop serious electric failure when exposed
to water.
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Do not open the service cover of indoor or outdoor units without turning OFF the main power supply; otherwise, this may bring about serious
safety accident.
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Do not touch or adjust safety devices inside the indoor or outdoor units. If they are touched or readjusted, serious accident may arise.
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Refrigerant leakage may bring about oxygen deficit-induced respiratory difficulty. In case refrigerant leakage is detected,
please turn off the main switch immediately, extinguish any naked flame, and contact service dealer.
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Make sure air tightness test is performed.
Refrigerant R410A is non-flammable, non-toxic, and odorless, and may produce toxic gases when exposed to open flame.
Since this refrigerant gas is heavier than air, it may result in lack of oxygen, thereby leading to breathing difficulties when the
area near the ground is filled with this gas. If that's the case, please turn off the main switch immediately, cut off the power
supply, and open the doors and windows for ventilation. Put out any open flame, and contact your service dealer. Performing
leak detection and gas tightness test with oxygen, acetylene or other flammable and toxic gases may cause explosion, so
nitrogen is recommended for this test.
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The standards for safe refrigerant leakage in construction and system operation are determined based on local regulations or standards.
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Use ELB with medium or higher sensing speed (ELCB with an operating time of 0.1 seconds or less), or electric shock or fire may arise.
IMPORTANT NOTICE
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Do not have the air outlet directly faced towards animals or plants, since this may bring about an adverse effect thereon.
The installation and service engineering have to comply with local standards, laws and regulations.
As an "appliance inaccessible to the public", the installation height of indoor unit of the air conditioner shall be at least
2.5m.
This conditioner can only be installed by dealers or professionals. The installation by users may cause water leakage,
electric shock or fire.
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For installation, the refrigerant piping must be firmly connected before the operation of compressor. For repair, the refrigerant piping must
be moved, handled and removed after the stop of compressor.
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Please don't short-circuit the protective device (e.g., the pressure switch, etc.) during operation, since this may cause fire or explosion.
This heat pump air conditioner has been designed for the following temperatures. Be sure to operate the heat pump air
conditioner within this range.
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In case of any question, please consult the dealer or the service center designated by our company.
CAUTION
DANGER
WARNING
NOTE
: Immediate hazard that WILL result in severe personal injury or death.
: Hazards or unsafe practices that COULD result in severe personal injury or death.
: Hazards or unsafe practices which COULD result in minor personal injury or damage to
property damage.
: Useful information for operation and/or maintenance.
Temperature
( ℃ )
-5 DB
15 DB
43 DB
27 DB
Indoor
Outdoor
Indoor
Outdoor
Cooling
Operation
Maximum
Minimum
Heating
Operation
DANGER
32 DB/23 WB 21 DB/15 WB
23 DB/17 WB
-20 DB/-21WB
DB: Dry Bulb, WB: Wet Bulb
*The temperature may be vary along with the outdoor units.
Please turn off power supply as soon as possible when a fire breaks out.
Please don't touch electrical components since this may result in electric shock.
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