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12-Recovery
• When removing refrigerant from a system, either for servicing or decommissioning, it
is recommended good practice that all refrigerants are removed safely.
• When transferring refrigerant into cylinders, ensure that only appropriate refrigerant
recovery cylinders are employed.
• Ensure that the correct number of cylinders for holding the total system charge are
available.
• All cylinders to be used are designated for the recovered refrigerant and labelled for
that refrigerant (i.e. special cylinders for the recovery of refrigerant).
• Cylinders shall be complete with pressure relief valve and associated shut-off valves
in good working order.
• Empty recovery cylinders are evacuated and, if possible, cooled before recovery
occurs.
• The recovery equipment shall be in good working order with a set of instructions
concerning the equipment that is at hand and shall be suitable for the recovery of
flammable refrigerants.
• In addition, a set of calibrated weighing scales shall be available and in good working
order.
• Hoses shall be complete with leak-free disconnect couplings and in good condition.
• Before using the recovery machine, check that it is in satisfactory working order, has
been properly maintained and that any associated electrical components are sealed
to prevent ignition in the event of a refrigerant release.
Consult manufacturer if in doubt.
• The recovered refrigerant shall be returned to the refrigerant supplier in the correct
recovery cylinder, and the relevant Waste Transfer Note arranged.
• Do not mix refrigerants in recovery units and especially not in cylinders.
• If compressors or compressor oils are to be removed, ensure that they have been
evacuated to an acceptable level to make certain that flammable refrigerant does not
remain within the lubricant.
• The evacuation process shall be carried out prior to returning the compressor to the
suppliers.
• Only electric heating to the compressor body shall be employed to accelerate this
process.
• When oil is drained from a system, it shall be carried out safely.
Explanation of symbols displayed on the indoor unit or outdoor unit.
This symbol shows that this appliance uses a flammable
refrigerant.
WARNING
If the refrigerant is leaked and exposed to an external igni-
tion source, there is a risk of fire.
This symbol shows that the operation manual should be
CAUTION
read carefully.
This symbol shows that a service personnel should be
CAUTION
handling this equipment with reference to the installation
manual.
This symbol shows that information is available such as
CAUTION
the operating manual or installation manual.
2. PRODUCT SPECIFICATION
2. 1. Installation tools
Tool name
Pressure is high and cannot be measured with a R22
gauge. To prevent erroneous mixing of other refrigerants,
Gauge manifold
the diameter of each port has been changed.
It is recommended to use gauge with seals -0.1 to 5.3 MPa
(-1 to 53 bar) for high pressure.
-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.
To increase pressure resistance, the hose material and
Charge hose
base size were changed. (R32/R410A)
A conventional vacuum pump can be used by installing a
Vacuum pump
vacuum pump adapter.
(Use of a vacuum pump with a series motor is prohibited.)
Special gas leakage detector for HFC refrigerant R410A or
Gas leakage detector
R32.
Copper pipes
It is necessary to use seamless copper pipes and it is desirable that the amount of residual
oil is less than 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 R32 (R410A) incurs pressure higher than when using R22, it is
necessary to choose adequate materials.
En-4
CAUTION
Change from R22 to R32 (R410A)
• Do not use the existing (for R22) piping and flare nuts.
If the existing materials are used, the pressure inside the refrigerant cycle will rise and
cause failure, injury, etc. (Use the special R32/R410A materials.)
• Use (refill or replace with) specified refrigerant (R32) only. Use of unspecified refriger-
ant can cause product malfunction, burst, or injury.
• Do not mix any gas or impurities except specified refrigerant (R32). Inflow of air or ap-
plication of unspecified material makes the internal pressure of the refrigerant cycle too
high, and may cause product malfunction, burst of piping, or injury.
• For installation purposes, be sure to use the parts supplied by the manufacturer or
other prescribed parts. The use of non-prescribed parts can cause serious accidents
such as the unit falling, water leakage, electric shock, or fire.
• Do not turn on the power until all work has been completed.
This manual describes how to install the indoor unit only. To install the outdoor unit or
branch box, (if any), refer to the installation manual included in each product.
2. 2. Accessories
For installation purposes, be sure to use the parts supplied by the manufacturer or other
prescribed parts.
The use of non-prescribed parts can cause serious accidents such as the unit falling,
water leakage, electric shock, or fire.
• The following installation parts are furnished. Use them as required.
• Keep the Installation Manual in a safe place and do not discard any other accessories
until the installation work has been completed.
Name and Shape
Operating Manual
Operating Manual
(CD-ROM)
Installation Manual
(indoor unit)
Special nut A
(large flange)
Special nut B
(small flange)
Washer
Coupler heat insulation (large)
Coupler heat insulation (small)
Cable tie (large)
Cable tie (medium)
Cable tie (small)
Drain hose insulation
Drain hose
Hose Band
WARNING
CAUTION
WARNING
Q'ty
Description
1
1
1
(This book)
4
For suspending the indoor unit
4
from ceiling
8
For indoor side pipe joint
1
(gas pipe)
For indoor side pipe joint
1
(liquid pipe)
4
For fixing the heat insulation
For fixing the remote controller
1
cable
For fixing the remote controller
1
cable
Insulates the drain hose and
1
vinyl hose
For installing drain pipe
1
VP25 (O.D.32, I.D.25)
1
For installing drain hose
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