Product Specification; Installation Tools - Rheem RHMV4821SNACJA Manual De Instalación

• To avoid getting an electric shock, never touch the electrical components soon after
the power supply has been turned off. After turning off the power, always wait 10
minutes or more before you touch the electrical components.
• Installation of this product must be done by experienced service technicians or
professional installers only in accordance with this manual. Installation by non-
professional or improper installation of the product might cause serious accidents
such as injury, water leakage, electric shock, or fi re. If the product is installed in
disregard of the instructions in this manual, it will void the manufacturer's warranty.
• Do not turn on the power until all work has been completed. Turning on the power
before the work is completed can cause serious accidents such as an electric shock
or a fi re.
• If refrigerant leaks when you are working, ventilate the area. If the leaking refrigerant
is exposed to a direct fl ame, it may produce a toxic gas.
• If there is a refrigerant leakage, make sure that it does not exceed the concentration
limit.
If a refrigerant leakage exceeds the concentration limit, it can lead to accidents such
as oxygen starvation.
• After the installation, make sure there is no refrigerant leakage.
If the refrigerant leaks into the room and becomes exposed to a source of fi re such
as a fan heater, stove, or burner, it will create a hazardous gas.
• Installation must be performed in accordance with regulations, codes, or standards
for electrical wiring and equipment in each country, region, or the installation place.
• Do not use this equipment with air or any other unspecifi ed refrigerant in the
refrigerant lines. Excess pressure can cause a rupture.
• Be sure to install the refrigerant pipe before operating the compressor. If the
refrigerant pipe is not installed and you operate the compressor while the valve is
open, air will be sucked into the system and abnormal pressure will occur in the
refrigerant cycle. This will damage the unit and cause injuries.
• When installing or relocating the air conditioner, do not mix gases other than the
specifi ed refrigerant (R410A) to enter the refrigerant cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise
to an abnormally high value and cause rupture, injury, etc.
• For appropriate working of the air conditioner, install it as written in this manual.
• To connect indoor unit and outdoor unit, or indoor unit and branch box, use air
conditioner piping and cables available through your local distributor. This manual
describes proper connections using such installation set.
• Do not modify power cable, use extension cable or branch wiring. Improper use may
cause electric shock or fi re by poor connection, insuffi cient insulation or over current.
• Do not purge the air with refrigerants but use a vacuum pump to vacuum the
installation.
• There is no extra refrigerant in the outdoor unit for air purging.
• Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.
• For wiring, use the prescribed type of cables, connect them securely, making sure
that there are no external forces of the cables applied to the terminal connections.
Improperly connected or secured cables can cause serious accidents such as
overheating the terminals, electric shock, or fi re.
• Install a breaker to cut off all AC main current at the same time.
If you do not install a breaker, it may cause electric shock and fi re.
• The appliance shall be stored in a room without continuously operating ignition
sources (for example: open fl ames, an operating gas appliance or an operating
electric heater).
• Do not pierce or burn.
• Be aware that refrigerants may not contain an outdoor.
• If there is a possibility of touching the fan during maintenance, make sure to turn
OFF the power before implementing the maintenance. Even if operations are
suspended, the fan of outdoor unit sometimes rotates, so if the fan rotates suddenly
while in contact with you may cause serious injury.
• Using the same vacuum pump for different refrigerants may damage the vacuum
pump or the unit.
• Use a clean gauge manifold, vacuum pump and charging hose for R410A
exclusively.
• Do not modify this unit, such as opening a hole in the cabinet.
• During the pump-down operation, make sure that the compressor is turned off
before you remove the refrigerant piping.
Do not remove the connection pipe while the compressor is in operation with 2 way
or 3 way valve open. This may cause abnormal pressure in the refrigeration cycle
that leads to rupture and even injury.
• This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction concerning use of the
appliance by a person responsible for their safety. Children should be supervised to
ensure that they do not play with the appliance.
• To avoid danger of suffocation, keep the plastic bag or thin fi lm used as the
packaging material away from young children.
• When installing this system in high humidity locations, install using ground fault
equipment breakers (often referred to in other countries as an ELCB [earth leakage
current breaker]) to reduce the risk of leaking current which may result in electric
shock or potential fi re.
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WARNING CAUTION
• This unit must be installed by qualifi ed personnel with a capacity certifi cation of
handling refrigerant fl uids. Refer to regulation and laws in use on installation place.
• Install the unit by following local codes and regulations in force at the place of
installation, and the instructions provided by the manufacturer.
• This unit is part of a set constituting an air conditioner. The unit must not be installed
alone or be installed with non-authorized device by the manufacturer.
• When installing pipes shorter than 3 m, sound of the outdoor unit will be transferred
to the indoor unit, which will cause large operating sound or some abnormal sound.
• To protect the persons, earth (ground) the unit correctly, and use the power cable
combined with an Earth Leakage Circuit Breaker (ELCB).
• The units are not explosion proof, and therefore should not be installed in explosive
atmosphere.
• This unit contains no user-serviceable parts. Always consult experienced service
technicians for repairing.
• When moving or relocating the air conditioner, consult experienced service
technicians for disconnection and reinstallation of the unit.
• Children should be monitored to ensure they do not play with the device.
• Do not touch the aluminum fi ns of Condenser coil and Evaporator coil built-in the
indoor or outdoor unit to avoid personal injury when you install or maintain the unit.
• Do not place any other electrical products or household belongings under indoor unit
or outdoor unit. Condensation dripping from the unit might get them wet, and may
cause damage or malfunction of your property.
• Do not use the unit for special purposes, such as storing food, raising animals,
growing plants, or preserving precision devices or art objects. It can degrade the
quality of the preserved or stored objects.
• Be sure not to start or stop the operation of air conditioning with power breaker.
Otherwise, it may cause malfunction or water leakage.
• When setting it up near the equipment that generates electromagnetic waves and
the equipment that generates the higher harmonics wave, be sure to take measures
against noise. Otherwise, it may cause malfunction or failure.
• When energizing to the compressor heater, turn on the power 12 hours or earlier
before operation begins. When the energizing time is short, it may cause failure.
Besides, do not turn off power during the busy season.

2. PRODUCT SPECIFICATION

• All products are manufactured to metric units and tolerances. United States customary
units are provided for reference only. In cases where exact dimensions and tolerances
are required, always refer to metric units.

2.1. Installation tools

WARNING
To install a unit that uses R410A refrigerant, use dedicated tools and piping materials
that have been manufactured specifi cally for R410A use. Because the pressure of
R410A refrigerant is approximately 1.6 times higher than R22, failure to use dedicated
piping material or improper installation can cause rupture or injury. Furthermore, it can
cause serious accidents such as water leakage, electric shock, or fi re.
Tool name
Pressure is huge and cannot be measured with a conven-
tional gauge. To prevent erroneous mixing of other refriger-
ants, the diameter of each port has been changed.
Gauge manifold It is recommended to use a gauge manifold with a high
pressure display range 500 microns to 768 psi (-0.1 to
5.3 MPa) and a low pressure display range 500 microns to
551 psi (-0.1 to 3.8 MPa).
To increase pressure resistance, the hose material and base
Charge hose
size were changed. (R410A)
A conventional vacuum pump can be used by installing a
vacuum pump adapter.
(Use of a vacuum pump with a series motor is prohibited.)
Vacuum pump
Be sure that the pump oil does not back flow into the
system. Use one capable for vacuum suction of 500 microns
(-100.7 kPa).
Gas leakage detector Special gas leakage detector for HFC refrigerant R410A.
■ Copper pipes
It is necessary to use seamless copper pipes and it is desirable that the amount of
residual oil is less than 0.0014 oz/33 ft (40 mg/10 m). Do not use copper pipes having a
collapsed, deformed or discolored portion (especially on the interior surface). Otherwise,
the expansion value or capillary tube may become blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when using R22, it is nec-
essary to choose adequate materials.
Thicknesses of copper pipes used with R410A are as shown in table.
Never use copper pipes thinner than those indicated in the table even if they are available
on the market.
Change from R22 to R410A
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