Fujitsu AOYG18KBTA2 - 10. Electrical Characteristics; 11. Safety Devices; 12. External Input and Output

En-4
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 falling, water leakage, electric shock, or re.
• The following installation parts are supplied. 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 Q’ty Description
Installation Manual
1
This manual
Drain pipe
1
For outdoor unit drain piping work
[Heat & Cool model (Reverse cycle)
only]
2.3. Pipe requirements
CAUTION
• Do not use existing pipes.
• Use pipes that have clean external and internal sides without any contamination which
may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or water.
• It is necessary to use seamless copper pipes.
Material: Phosphor deoxidized seamless copper pipes.
It is desirable that the amount of residual oil is less than 40 mg/10 m.
• Do not use copper pipes that have a collapsed, deformed, or discolored portion
(especially on the interior surface). Otherwise, the expansion valve or capillary tube
may become blocked with contaminants.
• Improper pipe selection will degrade performance. As an air conditioner using
R32(R410A) incurs pressure higher than when using conventional refrigerant, it is
necessary to choose adequate materials.
• Thicknesses of copper pipes used with R32(R410A) are as shown in the table.
• Never use copper pipes thinner than those indicated in the table even if they are
available on the market.
Thicknesses of Annealed Copper Pipes
Pipe outside diameter [mm (in.)] Thickness [mm]
6.35 (1/4) 0.80
9.52 (3/8) 0.80
12.70 (1/2) 0.80
15.88 (5/8) 1.00
19.05 (3/4) 1.20
■
Protection of pipes
• Protect the pipes to prevent the entry of moisture and dust.
• Especially, pay attention when passing the pipes through a hole or connecting the
end of a pipe to the outdoor unit.
Location Working period Protection method
Outdoor
1 month or more Pinch pipes
Less than 1 month Pinch or tape pipes
Indoor - Pinch or tape pipes
■
Refrigerant pipe size and allowable piping length
CAUTION
• Keep the piping length between the indoor unit and outdoor unit within the allowable
tolerance.
• The maximum lengths of this product are shown in the table. If the units are further
apart than this, correct operation cannot be guaranteed.
Layout example for the indoor units and outdoor unit.
OUTDOOR UNIT : 18 TYPE
H1
H2
H1
a
b
Outdoor unit
Indoor unit
Unit B
7-14
Connection
cable
Power cable
Circuit breaker
Power Source
230V~50Hz
Refrigerant
pipe
Unit A
7-14
● Connectable indoor unit capacity type
CAUTION
• The total capacity of the indoor units connected must be between 14,000 and
26,000BTU.
• Be sure to check the connecting pattern in technical manual when installed since
connection pattern is specied in it. Operation cannot be guaranteed if connected by
a method not specied in it. It can cause the fault of the product.
• Please connect to both of indoor unit and outdoor unit certainly.
• To install an indoor unit, refer to the installation Manual included with the indoor unit.
Outdoor port Connectable model name
A 7-14
B 7-14
UNIT B ø6.35, ø9.52
UNIT A ø6.35, ø9.52
OUTDOOR UNIT : 14 TYPE
H1
H2
H1
a
b
Outdoor unit
Indoor unit
Unit B
7-12
Connection
cable
Power cable
Circuit breaker
Power Source
230V~50Hz
Refrigerant
pipe
Unit A
7-12
9319205281-03_IM.indb 4 04-Dec-20 11:51:17