Product Specification; Precautions For Using R410A Refrigerant; Installation Tools; For Authorized Service Personnel Only - Fujitsu ASUG09LZBS Installation Manual

• Do not attempt to install the air conditioner or a part of the air conditioner by yourself.
• This unit must be installed by qualifi ed personnel with a capacity certifi cate for han-
dling refrigerant fl uids. Refer to regulation and laws in use on installation place.
• This unit is part of a set constituting an air conditioner. It must not be installed alone or
with a device non-authorized by the manufacturer.
• Always use a separate power supply line protected by a circuit breaker operating on
all wires with a distance between contact of 1/8 in. (3 mm) for this unit.
• The unit must be correctly earthed (grounded) and the supply line must be equipped
with a differential breaker in order to protect the persons.
• The units are not explosion proof and therefore should not be installed in explosive
atmosphere.
• When moving, consult authorized service personnel for disconnection and installation
of the unit.
• Do not place any other electrical products or household belongings under indoor unit
or outdoor unit.
Dripping condensation from the unit might get them wet, and may cause damage or
malfunction of your property.

2. PRODUCT SPECIFICATION

2.1. Precautions for using R410A refrigerant

The basic installation work procedures are the same as conventional refrigerant
(R22) models.
However, pay careful attention to the following points:
• Since the working pressure is 1.6 times higher than that of conventional refrigerant
(R22) models, some of the piping and installation and service tools are special. (Refer
to the following table.)
Especially, when replacing a conventional refrigerant (R22) model with a new refriger-
ant R410A model, always replace the conventional piping and fl are nuts with the
R410A piping and fl are nuts.
• Models that use refrigerant R410A have a different charging port thread diameter to
prevent erroneous charging with conventional refrigerant (R22) and for safety. There-
fore, check beforehand. [The charging port thread diameter for R410A is 1/2-20 UNF.]
• Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant (R22) models. Also, when storing the piping, securely seal the opening by
pinching, taping, etc.
• When charging the refrigerant, take into account the slight change in the composition
of the gas and liquid phases. And always charge from the liquid phase where refriger-
ant composition is stable.

2.2. 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 the gauge with seals -30 inHg to 768 psi
(-0.1 to 5.3 MPa) for high pressure.
-30 inHg to 551 psi (-0.1 to 3.8 MPa) for low pressure.
To increase pressure resistance, the hose material and base
Charge hose
size were changed.
A conventional vacuum pump can be used by installing a
Vacuum pump
vacuum pump adapter.
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 0.004 oz/100 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.
• 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 R410A materials.)
• Use (refi ll or replace with) specifi ed refrigerant (R410A) only. Use of unspecifi ed
refrigerant can cause product malfunction, burst, or injury.
• Do not mix any gas or impurities except specifi ed refrigerant (R410A). Infl ow of air
or application 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.
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.
En-2
CAUTION
Contents of change
WARNING
CAUTION

2.3. For authorized service personnel only.

• For appropriate working of the air conditioner, install it as outlined in this manual.
• To connect the indoor unit and outdoor unit or branch box, use air conditioner piping
and cables available through your local distributor. This manual describes proper
connections using such installation set.
• Do not reconnect the power until all work has been completed.
This installation manual describes how to install the indoor unit only.
To install the outdoor unit or branch box, refer to the installation manual included with
the outdoor unit or branch box.
• Be careful not to scratch the air conditioner when handling it.
• After installation, explain correct operation to the customer, using the operation manual.

2.4. Accessories

The following installation accessories are supplied. Use them as required.
Name and Shape
Operation manual
Installation manual
(This manual)
Remote controller
Remote controller holder
Cloth tape
Filter holder
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
Connection cable (4-conductor)
Wall pipe
Decorative tape
Vinyl tape
Wall cap

2.5. Pipe requirement

Refer to the installation manual for the outdoor unit for description of allowable pipe length
and height difference.
Model Liquid pipe size <thickness>
Ø 1/4 in (Ø 6.35 mm)
09, 12
<1/16 in (0.80 mm)>
Ø 1/4 in (Ø 6.35 mm)
15
<1/16 in (0.80 mm)>
WARNING
CAUTION
Q'ty Name and Shape
Tapping screws (large)
1
Tapping screws (small)
1
Battery
1
Wall hook bracket
1
Air cleaning fi lters
1
2
Saddle
Drain hose
Tapping screws
Sealant
Putty
CAUTION
Gas pipe size <thickness>
Ø 3/8 in (Ø 9.52 mm)
<1/16 in (0.80 mm)>
Ø 1/2 in (Ø 12.70 mm)
<1/16 in (0.80 mm)>
Q'ty
5
2
2
1
1