En-4
Explanation of symbols displayed on the indoor unit or outdoor unit.
WARNING
This symbol shows that this appliance uses a fl ammable
refrigerant.
If the refrigerant is leaked and exposed to an external igni-
tion source, there is a risk of fi re.
CAUTION
This symbol shows that the operation manual should be
read carefully.
CAUTION
This symbol shows that a service personnel should be
handling this equipment with reference to the installation
manual.
CAUTION
This symbol shows that information is available such as
the operating manual or installation manual.
2. PRODUCT SPECIFICATION
2.1. Installation tools
Tool name Change from R22 to R32 (R410A)
Gauge manifold
Pressure is high and cannot be measured with a R22
gauge. To prevent erroneous mixing of other refrigerants,
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.
Charge hose
To increase pressure resistance, the hose material and base
size were changed. (R32/R410A)
Vacuum pump
A conventional vacuum pump can be used by installing a
vacuum pump adapter.
(Use of a vacuum pump with a series motor is prohibited.)
Gas leakage detector
Special gas leakage detector for HFC refrigerant R410A or
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.
WARNING
• Do not use the existing (for R22) piping and fl are 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 (refi ll or replace with) specifi ed refrigerant (R32) only. Use of unspecifi ed refriger-
ant can cause product malfunction, burst, or injury.
• Do not mix any gas or impurities except specifi ed refrigerant (R32). Infl ow of air or ap-
plication of unspecifi ed 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 fi re.
• Do not turn on the power until all work has been completed.
CAUTION
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
WARNING
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 to fall,
water leakage, electric shock, or fi re.
• Keep the Installation Manual in a safe place and do not discard any other accessories
until the installation work has been completed.
• The following installation parts are furnished. Use them as required.
Name and Shape
Q’ty
Name and Shape
Q’ty
Operating manual
1
Drain hose insulation
1
Operating manual
(CD-ROM)
1
Hose band
1
Installation manual
(This manual)
1
Coupler heat insulation (large)
1
Template
(carton top)
1
Coupler heat insulation (small)
1
Special nut A
(large fl ange)
4
Cable tie (for electrical wiring)
2
Special nut B
(small fl ange)
4
Wire clamper (for electrical wir-
ing)
1
Drain hose
[VP25(O.D.32, I.D.25)]
1
2.3. Cassette grille accessories
Name and Shape
Q’ty Description
Connector cover
1
For covering connector
Tapping screw
(M5 × 12 mm)
4
For mounting cassette grille
Tapping screw
(M4 × 12 mm) 1
For mounting connector cover
L angle
2
For mounting the hook wire to the
cassette grille
Hook wire
2
For suspending the cassette grille
Screw [pitch small]
(M4 × 10 mm)
2
For mounting the hook wire (for met-
als)
Screw [pitch large]
(M4 × 10 mm)
4
For mounting the L angle and hook
wire (for resins)
The following items are necessary to install this air conditioner. (The items are not includ-
ed with the air conditioner and must be purchased separately.)
Additional materials
Connection pipe assembly Wall cap
Connection cable (4-conductor)
Saddle
Wall pipe Drain hose
Decorative tape Tapping screws
Vinyl tape Putty
9379124119-03_IM.indb 49379124119-03_IM.indb 4 2019/2/22 16:51:362019/2/22 16:51:36
To Next Page
Loading...
Need help?
General
