Fujitsu ASGA18FMTB-U Installation guide

Brand: Fujitsu

Model: ASGA18FMTB-U

Category: Split-system air conditioners

Type: Installation guide

This manual is also suitable for

ASGA24FMTB-U

Wall hook bracket

6 cm or more

5 cm or more

9 cm

or more

150 cm or more

180 cm or more

(Wall cap)

Remote controller

holder

Tapping screw

(small)

(Rear)

(E)Left outlet

(G)Left rear

outlet

(D)Left bottom outlet

(F)Centre

outlet

(A)Rear

outlet

(C)Bottom

outlet

(B)Right

outlet

30 cm

or more

30 cm

or more

30 cm

or more

60 cm

or more

60 cm

or more

Air ﬂ ow

INDOOR UNIT

6.35 mm

(1/4") dia.

To power

supply

15.88 mm

(5/8") dia.

OUTDOOR UNIT

Wall hook bracket

Centering marks

LowerLower

10 mm

or more

80 mm hole 80 mm hole

10 mm

or more

Fasten with vinyl tape

5~10 mm

(Wall pipe)(Wall cap)

(Inside)

(Outside)

Wall

Bind with vinyl tape

Refrigerant pipes (top)

Rear piping

Indoor unit drain hose (bottom)

Bottom piping

Right piping

Drain hose

Insulation (Drain hose)

Wall hook bracket

Tapping screw

(size: large; quantity: 8)

Intake grille

Knob

Intake grille

Mounting shaft

Bearing

Front panel

Screws

(6 position)

Front panel

Wall hook bracket

Push

[p] mark

Front panel

Top hole (center)

Top hook (center)

Front panel

Indoor unit

Top holes

(two sides)

Top hooks (two sides)

Indoor unit

(Fitting) Bottom hooks

Wall hook

bracket

Top hooks

Indoor unit

(Spacer)

Wall hook bracket

Carry out wiring and piping

while the unit is in this state.

Connection piping

Large piping

Small piping

Alignment marks

Wall hook

bracket

Drain cap

Indoor unit drain hose

For left piping, cut off the

piping outlet cutting groove

with a hacksaw.

Remove the drain cap by pulling

the projection at the end of

the cap with pliers, etc.

Pipe

Insulating

Pipe

Cutter

Cut line

Tighten with two wrenches.

Wrench (ﬁ xed)

Flare nut

Torque wrench

Indoor unit

pipe

Connection pipe

To prevent gas leakage,

coat the ﬂ are surface

with refrigerator oil.

Terminal cover

* After removing the screws,

remove terminal cover.

* The drain caps have 2 shapes. (The shapes

are different according to the model.)

For the B-type drain cap, use a pair of cutting

pliers or similar tool to pull off the projection

on the tip of the cap.

Drain cap

Insert the drain cap

until it butts against

the drain port.

No gap

Hexagonal

wrench

Drain cock

Drain cap

Use a hexagonal wrench (4 mm at

opposite side) to insert the drain cap

until it contacts the tip of drain cock.

Drain hose

Insert the drain hose until it

butts against the drain port.

Refrigerant

R410A

Outdoor unit connection cable and pipe connection

preparations:

Remove outdoor unit terminal cover.

SPLIT TYPE AIR CONDITIONER

Wall Mounted Type

INSTALLATION MANUAL

(PART No. 9385991361)

For authorized service personnel only.

WARNING

This mark indicates procedures which, if improperly performed, might lead to the death or serious injury

of the user.

CAUTION

This mark indicates procedures which, if improperly performed, might possibly result in personal harm to

the user, or damage to property.

This air conditioner uses new refrigerant HFC (R410A).

The basic installation work procedures are the same as conventional refrigerant (R22) models.

However, pay careful attention to the following points:

(1) 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. (See the table below.)

Especially, when replacing a conventional refrigerant (R22) model with a new refrigerant R410A model, always replace the

conventional piping and ﬂ are nuts with the R410A piping and ﬂ are nuts.

(2) Models that use refrigerant R410A have a different charging port thread diameter to prevent erroneous charging with

conventional refrigerant (R22) and for safety. Therefore, check beforehand. [The charging port thread diameter for R410A

is 1/2 UNF 20 threads per inch.]

(3) 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 openings by pinching, taping, etc.

(4) 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 side whose composition is stable.

SELECTING THE MOUNTING

POSITION

WARNING

Install at a place that can withstand the weight of the

indoor and outdoor units and install positively so that the

units will not topple or fall.

CAUTION

(1) Do not install where there is the danger of combustible

gas leakage.

(2) Do not install near heat sources.

(3) If children under 10 years old may approach the unit,

take preventive measures so that they cannot reach

the unit.

(4) Install the indoor unit on the wall where the height

from the ﬂ oors more than 180 cm.

Decide the mounting position with the customer as follows:

1. INDOOR UNIT

(1) Install the indoor unit level on a strong wall which is not subject to

vibration.

(2) The inlet and outlet ports should not be obstructed : the air should be

able to blow all over the room.

(3) Install the unit near at a place an power outlet or special branch

circuit.

(4) Do not install the unit where it will be exposed to direct sunlight.

(5) Install the unit where connection to the outdoor unit is easy.

(6) Install the unit where the drain pipe can be easily installed.

(7) Take servicing, etc. into consideration and leave the spaces shown in

the ﬁ gure. Also install the unit where the ﬁ lter can be removed.

[Indoor unit piping direction]

The piping can be connected in the 7 directions in the ﬁ gure.

When the piping is connected in direction (B), (C), (D) or (E), cut

along the piping groove in the side of the front panel with a hacksaw.

2. OUTDOOR UNIT

(1) If possible, do not install the unit where it will be exposed to direct

sunlight. (If necessary, install a blind that does not interfere with the

air ﬂ ow.)

(2) Do not install the unit where a strong wind blows or where it is very

dusty.

(3) Do not install the unit where people pass.

(4) Take your neighbors into consideration so that they are not disturbed

by air blowing into their windows or by noise.

(5) Provide the space shown in the ﬁ gure so that the air ﬂ ow is not

blocked. Also for efﬁ cient operation, leave open three of the four

directions front, rear, and both sides.

(6) Install the outdoor unit in a location which can withstand the weight of

the unit and vibration, and which can install horizontally.

(7) Provide the indicated space to ensure good airﬂ ow.

(8) During heating operation, drain water ﬂ ows from the outdoor unit.

Therefore, install the outdoor unit in a place where the drain water

ﬂ ow will not be obstructed. (Reverse cycle model only)

(9) Install the outdoor unit in a place where it will be free from being dirty

or getting wet by rain as much as possible.

(10) Install the unit where connection to the indoor unit is easy.

STANDARD ACCESSORIES

The following installation accessories are supplied. Use them as

required.

OPTIONAL PARTS

INDOOR UNIT ACCESSORIES

Name and Shape Q’ty Use

Operating Manual

Installation Manual

(This manual)

Wall hook bracket

For indoor unit installation

Remote

controller

Use for air conditioner

operation

Battery

For remote controller

Remote controller

holder

Use as remote controller

holder

Tapping screw (large)

For wall hook bracket

installation

Tapping screw (small)

For remote controller

holder installation

Insulation (Drain hose)

For installing drain hose

Cloth tape

For ﬁ nishing of the piping

OUTDOOR UNIT ACCESSORIES

Name and Shape Q’ty Application

Drain pipe

For outdoor unit drain piping

work

[Heat & Cool model

(Reverse cycle) only]

Drain cap

Exterior Parts name Model No. Summary

Wired

remote

controller

UTY-RNNGU

For Air

conditioner

operation

(3-wire type)

Air cleaning

ﬁ lter frame

Air cleaning

ﬁ lter

UTR-FA13-1

Deodorizing

ﬁ lter

UTR-FA13-2

One set of following parts are necessary in installation of this air

conditioner.

Name

Connection pipe assembly

Connection cable

Wall pipe

Decorative tape

Vinyl tape

Wall cap

Saddle

Drain hose

Tapping screws

Sealant

M10 bolt, nut

CONNECTION PIPE

REQUIREMENT

Table 2

Diameter

Maximum

length

Maximum Height

(between indoor

and outdoor)

Small Large

6.35 mm

(1/4 in.)

15.88 mm

(5/8 in.)

20 m

(66 ft.)

8 m

(26 ft.)

CAUTION

Install heat insulation around both the gas and liquid

pipes. Failure to do so may cause water leaks.

Use heat insulation with heat resistance above 120 °C.

(Reverse cycle model only)

In addition, if the humidity level at the installation

location of the refrigerant piping is expected to exceed

70%, install heat insulation around the refrigerant piping.

If the expected humidity level is 70-80%, use heat

insulation that is 15 mm or thicker and if the expected

humidity exceeds 80%, use heat insulation that is 20 mm

or thicker.

If heat insulation is used that is not as thick as speciﬁ ed,

condensation may form on the surface of the insulation.

In addition, use heat insulation with heat conductivity of

0.045 W/(m·K) or less (at 20 °C).

ELECTRICAL REQUIREMENT

• Electric cable size and fuse capacity:

Table 3

MODEL 18,000 BTU class 24,000 BTU class

Power supply cable (mm²)

MAX. 2.5 3.5

MIN. 1.5 2.5

Connection cable (mm²)

MAX. 2.5 2.5

MIN. 1.5 1.5

Fuse capacity (A) 20 30

• Use conformed cable with Type 60245 IEC57.

• Install all electrical works in accordance to the standard.

• Install the disconnect device with a contact gap of at least 3 mm in all

poles nearby the units. (Both indoor unit and outdoor unit)

• Install the circuit breaker nearby the units.

POWER

WARNING

(1) The rated voltage of this product is 220-240 V A.C.

50 Hz.

(2) Before turning on the verify that the voltage is within

the 198 V to 264 V range.

(3) Always use a special branch circuit and install a

special breaker to supply power to the air conditioner.

(4) Use a circuit breaker matched to the capacity of

the room air conditioner. (Install in accordance with

standard)

(5) The circuit breaker is installed in the permanent

wiring. Always use a circuit that can trip all the poles

of the wiring and has an isolation distance of at least

3 mm between the contacts of each pole.

(6) Perform wiring work in accordance with standards so

that the room air conditioner can be operated safely

and positively.

(7) Install a leakage circuit breaker in accordance with

the related laws and regulations and electric company

standards.

CAUTION

(1) The power source capacity must be the sum of the

room air conditioner current and the current of other

electrical appliances. When the current contracted

capacity is insufﬁ cient, change the contracted

capacity.

(2) When the voltage is low and the air conditioner is

difﬁ cult to start, contact the power company the

voltage raised.

INSTALLATION PROCEDURE

INDOOR UNIT INSTALLATION

1. CUTTING THE HOLE IN THE WALL FOR THE

CONNECTING PIPING

(1) Cut a 80 mm diameter hole in the wall at the position shown in the

ﬁ gure.

(2) When cutting the wall hole at the inside of the wall hook bracket, cut

the hole to a point of intersection of centering marks.

When cutting the wall hole at the outside of the wall hook bracket, cut

the hole at a point of 10mm below.

(3) Cut the hole so that the outside end is lower (5 to 10 mm) than the

inside end.

(4) Always align the center of the wall hole. If misaligned, water leakage

will occur.

(5) Cut the wall pipe to match the wall thickness, stick it into the wall

cap, fasten the cap with vinyl tape, and stick the pipe through the

hole. (The connection pipe is supplied in the installation set.)

(6) For left piping and right piping and center piping, cut the hole a little

lower so that drain water will ﬂ ow freely.

2. INSTALLING THE WALL HOOK BRACKET

(1) Install the wall hook bracket so that it is correctly positioned

horizontally and vertically. If the wall hook bracket is tilted, water will

drip to the ﬂ oor.

(2) Install the wall hook bracket so that it is strong enough to withstand

the weight of an adult.

• Fasten the wall hook bracket to the wall with 6 or more screws through

the holes near the outer edge of the bracket.

• Check that there is no rattle at the wall hook bracket.

CAUTION

Install the wall hook bracket horizontally and vertically.

WARNING

If the wall pipe is not used, the cable interconnecting the

indoor and outdoor units may touch metal and cause

electric leakage.

3. FORMING THE DRAIN HOSE AND PIPE

CAUTION

(1) In order to align the drain hose and drain cap, be sure

to insert securely and vertically.

Incline insertion will cause water leakage.

(2) When inserting, be sure not to attach any material

besides water. If any other material is attached, it will

cause deterioration and water leakage.

(3) After removing drain hose, be sure not to forget

mounting drain cap.

(4) Be sure to ﬁ x the drain hose with tape to the bottom

of piping.

(5) Prevent drain water frozen under low temperature

environment.

When installing indoor unit’s drain hose in outdoor,

necessary measure for frost protection should be

taken to prevent drain water frozen.

• Under low temperature environment (when outdoor

temperature is under 0 °C), after cooling operation is

executed, water in the drain hose could be frozen.

Once drain water is frozen, the drain hose will be blocked

and water leakage may be resulted for indoor unit.

• Attach the Insulation (Drain hose) to the drain hose.

[Rear piping, Right piping, Bottom piping]

• Install the indoor unit piping in the direction of the wall hole and bind

the drain hose and pipe together with vinyl tape.

• Install the piping so that the drain hose is at the bottom.

• Wrap the pipes of the indoor unit that are visible from the outside with

decorative tape.

[For Left rear piping, Left piping]

• Interchange the drain cap and the drain hose.

• For left piping and left rear piping, align the ends of connection piping

with the mark and shape the connection pipe.

• Bend the connection piping at the bend radius of 100 mm or more and

install with in no more than 35 mm from the wall.

• After passing the indoor unit piping and drain hose through the wall

hole, hang the indoor unit on the hooks at the top and bottom of the

wall hook bracket.

[Installing the indoor unit]

• Hang the indoor unit from the hooks at the top of the wall hook bracket.

• Insert the spacer, etc. between the indoor unit and the wall hook

bracket and separate the bottom of the indoor unit from the wall.

After hooking the indoor unit to the top hook, hook the ﬁ ttings of the

indoor unit to the two bottom hooks while lowering the unit and pushing it

against the wall.

4. FRONT PANEL REMOVAL AND INSTALLATION

INTAKE GRILLE REMOVAL

(1) Open the intake grille.

(2) Pull down the knob.

(3) Lift the intake grille upward and

until the bearing at the top of

the intake grille is removed.

INTAKE GRILLE INSTALLATION

(1) The ﬁ xing axle of the

intake grille is installed

on the front panel.

(2) Lay down the intake grille.

FRONT PANEL REMOVAL

(1) Remove intake grille (Refer to the item of intake grille removal.)

(2) Remove six screws.

(3) The thumb is hung on the lower part as shown in the ﬁ gure, and it

pulls to the front, pushing [p] mark, and bottom hooks (two position)

is removed from wall hook bracket.

(4) The front panel is pulled to the front, raising the upper surface, and a

front panel is removed.

FRONT PANEL INSTALLATION

(1) Firstly, ﬁ t the lower part of the front panel, and insert top and bottom

hooks. (Top center and both sides)

(2) Six screws is attached.

(3) The intake grille is attached.

CAUTION

Install the front panel and intake grille securely.

If installation is imperfect, the front panel or intake grille

may fall off and cause injury.

OUTDOOR UNIT INSTALLATION

CONNECTING THE PIPING

WARNING

(1) Install the unit where it will not be tilted by more than

5°.

(2) When installing the outdoor unit where it may

exposed to strong wind, fasten it securely.

• Set the unit on a strong stand, such as one made of concrete blocks to

minimize shock and vibration.

• Do not set the unit directly on the ground because it will cause trouble.

• Since the drain water ﬂ ows out of the outdoor unit during heating

operation, install the drain pipe sold separately and connect it to an

commercial 16 mm hose. (Heat & Cool model (Reverse cycle) only)

• When installing the drain pipe, plug all the holes (• holes at two places)

other than the drain pipe mounting hole in the bottom of the outdoor

unit with putty so there is no water leakage.

(Heat & Cool model (Reverse cycle) only)

NOTE:

Installation in cold regions. Do not use the accessory drain pipe.

(If the drain pipe is used, the drain water in the pipe may freeze in

extremely cold weather.)

(1) Outdoor unit to be fasten with bolts at the four places indicated by

the arrows without fail.

(2) Fix securely with bolts on

a solid block. (Use 4 sets

of commercially available

M10 bolt, nut and washer.)

(3) Since the drain water ﬂ ows out of the

outdoor unit during heating operation,

install the drain pipe and connect it to

a commercial 16 mm hose.

When installing the drain pipe, plug

all the holes other than the drain pipe

mounting hole in the bottom of the

outdoor unit with putty so there is no

water leakage.

(Reverse cycle model only)

CAUTION

When the outdoor temperature is 0 °C or less, do not

use the accessory drain pipe and drain cap.

If the drain pipe and drain cap are used, the drain water

in the pipe may freeze in extremely cold weather.

(Reverse cycle model only)

Air ﬂ ow 2-ø 12 hole

Drain pipe mounting hole

Drain

cap

Bottom

side

603 mm

343 mm

Bolt

Nut

Block

Drain pipe mounting hole

Bottom

plate

Drain pipe

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 breakage, injury, etc.

(Use the special R410A materials.)

CAUTION

(1) Do not use mineral oil on ﬂ ared part.

Prevent mineral oil from getting into the system as

this would reduce the lifetime of the units.

(2) While welding the pipes, be sure to blow dry nitrogen

gas through them.

(3) The maximum lengths of this product are shown in

table 2. If the units are further apart than this, correct

operation cannot be guaranteed.

1. FLARING

(1) Cut the connection pipe to the necessary length with a pipe cutter.

(2) Hold the pipe downward so that cuttings will not enter the pipe and

remove the burrs.

(3) Insert the ﬂ are nut (always use the ﬂ are nut attached to the indoor

and outdoor units respectively) onto the pipe and perform the ﬂ are

processing with a ﬂ are tool.

Use the special R410A ﬂ are tool, or the conventional (for R22) ﬂ are

tool.

When using the conventional ﬂ are tool, always use an allowance

adjustment gauge and secure the A dimension shown in the table

below.

Check if [L] is ﬂ ared uniformly

and is not cracked or scratched.

Die

Pipe

Pipe outside diameter

Pipe outside

diameter

A (mm)

Flare tool for

R410A, clutch type

Conventional (R22) ﬂ are tool

Clutch type Wing nut type

6.35 mm (1/4 in.) 0 to 0.5 1.0 to 1.5 1.5 to 2.0

15.88 mm (5/8 in.) 0 to 0.5 1.0 to 1.5 2.0 to 2.5

2. BENDING PIPES

CAUTION

(1) To prevent breaking of the pipe, avoid sharp bends.

Bend the pipe with a radius of curvature of 150 mm or

more.

(2) If the pipe is bent repeatedly at the same place, it will

break.

• When bending the pipe, be careful not to crush it.

• Do not bend the pipes in an angle more than 90°. When pipes are

repeatedly bent or stretched, the material will harden, making it difﬁ cult

to bend or stretch them anymore. Do not bend or stretch the pipes

more than three times.

• When bending the pipe, do not

bend it as is. The pipe will be

collapsed. in this case, cut the

insulating pipe with a sharp cutter

as shown on the right, and bend

it after exposing the pipe. After

bending the pipe as you want,

be sure to put the heat insulating

pipe back on the pipe, and

secure it with tape.

3. CONNECTION PIPES

CAUTION

(1) Be sure to apply the pipe against the port on the

indoor unit and the outdoor unit correctly.

If the centering is improper, the ﬂ are nut cannot be

tightened smoothly. If the ﬂ are nut is forced to turn,

the threads will be damaged.

(2) Do not remove the ﬂ are nut from the indoor unit pipe

until immediately before connecting the connection

pipe.

(3) Hold the torque wrench at its grip, keeping it in the

right angle with the pipe, in order to tighten the ﬂ are

nut correctly.

(1) Install the outdoor unit wall cap (supplied with the optional installation

set or procured in the ﬁ eld) to the wall hole pipe.

(2) Connect the outdoor unit and indoor unit piping.

(3) After matching the center of the ﬂ are surface and tightening the nut

hand tight, tighten the nut to the speciﬁ ed tightening torque with a

torque wrench.

Flare nut tightening torque

Flare nut Tightening torque

6.35 mm (1/4 in.) dia. 14 to 18 N · m (140 to 180 kgf · cm)

15.88 mm (5/8 in.) dia. 63 to 77 N · m (630 to 770 kgf · cm)

Do not remove the cap from the connection pipe before connecting the

pipe.

- Continued on back -

Special tools for R410A

Tool name Contents of change

Gauge manifold

Pressure is high and cannot be measured with a conventional gauge. To prevent erroneous mixing of other

refrigerants, the diameter of each port has been changed.

It is recommended the gauge with seals –0.1 to 5.3 MPa (–76 cmHg to 53 kgf/cm

) for high pressure.

–0.1 to 3.8 MPa (–76 cmHg to 38 kgf/cm

) for low pressure.

Charge hose To increase pressure resistance, the hose material and base size were changed.

Vacuum pump A conventional vacuum pump can be used by installing a 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 40 mg/10m. Do not use copper pipes

having a collapsed, deformed or discoloured portion (especially on the interior

surface). Otherwise, the expansion valve or capillary tube may become

blocked with contaminants.

As an air conditioner using R410A incurs pressure higher than when using

R22, it is necessary to choose adequate materials.

Thicknesses of copper pipes used with R410A are as shown in Table 1. Never

use copper pipes thinner than 0.8 mm (Normal diameter is 1/4 in., 3/8 in.),

1.0 mm (Normal diameter is 5/8 in.) even when it is available on the market.

Table 1 Thicknesses of Annealed Copper Pipes

Thickness (mm)

Nominal

diameter (inch)

Outer diameter

(mm)

R410A [ref.] R22

1/4 6.35 0.80 0.80

3/8 9.52 0.80 0.80

5/8 15.88 1.00 1.00

For authorized service personnel only.

WARNING

(1) For the room air conditioner to operate satisfactorily, install it as outlined in this installation instruction sheet.

(2) Connect the indoor unit and outdoor unit with the room air conditioner piping and cords available standards parts. This

installation instruction sheet describes the correct connections using the installation set available from our standard parts.

(3) Installation work must be performed in accordance with national wiring standards by authorized personnel only.

(4) If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant comes in contact with a ﬂ ame, it

produces a toxic gas.

(5) Do not use an extension cord.

(6) Do not turn on the power until all installation work is complete.

(7) Do not use this equipment with air or any other unspeciﬁ ed refrigerant in the refrigerant lines. Excess pressure can cause

a rupture.

• Be careful not to scratch the room air conditioner when handling it.

• After installation, explain correct operation to the customer, using the operating manual.

• Let the customer keep this installation instruction sheet because it is used when the air conditioner is serviced or moved.

9385991361-EN.indd 19385991361-EN.indd 1 9/22/2560 BE 15:019/22/2560 BE 15:01

9 10

2(N)

1(L)

(N)

(L)

Connection cable

Indoor unit side

terminal block

To power supply

and ground

Outdoor unit side

terminal block

Power supply cable

CN10

Connecting pipe

Blank cap

3-way valve

Hexagon wrench

Charging port

Outdoor unit

Service hose

with valve core

Cap

Use a 4 mm

hexagon wrench.

Loop

Insulation

Strip 25 mm (15/16")

Ring terminal

Insulation

Strip 10 mm (3/8")

Screw with

special washer

Cable

Loop or

Ring

terminal

Terminal blocks

Cable

Screw with

special

washer

Loop or

Ring terminal

(Rear)

(E)Left

outlet

(G)Left rear

outlet

(D)Left bottom

outlet

(F)Center

outlet

(A)Rear

outlet

(C)Bottom

outlet

(B)Right

outlet

Connection pipe

heat insulation

Indoor unit pipe

heat insulation

Bind the pipes together

so that there is no gap.

[Example of the right piping]

Indoor unit (Rear)

Vinyl tape

Overlap

Connection pipe

heat insulation

Indoor unit pipe

heat insulation

Bind the pipes together

so that there is no gap.

[Example of the left piping]

Indoor unit (Rear)

Vinyl tape

Butting

connection

[Example of the left piping]

Indoor unit (Rear)

Cloth tape

Accommodates the rear

piping housing section

Indoor unit (Rear)

[Example of the left piping]

Vinyl tape

Connection cable

(Top of the pipe)

Small pipe

Large pipe

Drain hose

(Side)

Drain hose

Connection cable

Connection pipe

Wall pipe

(View from indoors)

(Saddle)

(Outside wall cap)

(Sealer putty)

Wall

(Outdoors)

Pipe

GOOD

PROHIBITED

Lifted up

Wave End in water

Cable clamp

Screw

Wire cover

Intake grille

Front panel

Check the following:

CN9

Control cover

Screw

Connector

Screw

Display case

DISPLAY

Screw

Cable clamper

Conduit

holder

Screw

Cable clamper

Wire of

wired

remote

controller

Original cable

of control unit

Rib

Connect the cable

REMOCON

hole

Gauge manifold

Vacuum pump

Service hose

CAUTION

Use a clean gauge manifold

and charging hose for

R410A exclusively.

2(N)

1(L)

(N)

1(L)

Connection cable

Indoor unit side

terminal block

To power supply

and ground

Outdoor unit side

terminal block

Power supply cable

Insulation tube

Connection cable

Control box

Cable clamp

Terminal cover

Screw

Wire cover

Screw

Cable clamp

12 3 4 5 6

Terminal block

Earth screw

Cable

clamp

Connection cable

25 mm

35 mm

12 3 4 5 6

Terminal block

Earth screw

Cable

clamp

Connection cable

25 mm

35 mm

Cable clamp

Hook

NL1

(L)

(N)

35 mm or less

45 mm

Terminal

block

Control

box

Cable clamp

Insulation tube

Connection cable

Power supply

cable

(L)

(N)

35 mm or less

45 mm

Terminal

block

Control

box

Cable clamp

Insulation tube

Connection cable

Power supply

cable

Cable clamp

Insulation tube

Connection cable or

power supply cable

Drain

hose

Saddle

Remote controller holder ﬁ xing Remote controller mounting

Remote controller

holder

Tapping

screw

(small)

Remote

controller

(1) Set

(2) Push

Transmitter section

TEST RUN button

[Cooling model]

VACUUM PROCESS

CAUTION

(1) 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!

(2) Use a vacuum pump for R410A exclusively. Using the

same vacuum pump for different refrigerants may

damage the vacuum pump or the unit.

1. VACUUM

(1) Remove the cap, and connect the gauge manifold and the vacuum

pump to the charging valve by the service hoses.

(2) Vacuum the indoor unit and the connecting pipes until the pressure

gauge indicates –0.1 MPa (–76 cmHg).

(3) When –0.1 MPa (–76 cmHg) is reached, operate the vacuum pump

for at least 15 minutes.

(4) Disconnect the service hoses and ﬁ t the cap to the charging valve to

the speciﬁ ed torque.

(5) Remove the blank caps, and fully open the spindles of the 2-way and

3-way valves with a hexagon wrench (Torque : 6 to 7 N · m (60 to 70

kgf · cm).

(6) Tighten the blank caps of the 2-way valve and 3-way valve to the

speciﬁ ed torque.

2. ADDITIONAL CHARGE

Refrigerant suitable for a piping length of 7.5 m is charged in the outdoor

unit at the factory.

When the piping is longer than 7.5 m, additional charging is necessary.

For the additional amount, see the table below.

3. GAS LEAKAGE INSPECTION

WARNING

(1) During installation, make sure that the refrigerant pipe

is attached ﬁ rmly before you run the compressor.

Do not operate the compressor under the condition of

refrigerant piping not attached properly with 2-way or

3-way valve open. This may cause abnormal pressure in

the refrigeration cycle that leads to breakage and even

injury.

(2) 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 breakage and even injury.

(3) When installing and 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 breakage, injury, etc.

CAUTION

After connecting the piping, check the joints for gas

leakage with gas leak detector.

ELECTRICAL WIRING

WARNING

(1) Before starting work, check that power is not being

supplied to indoor unit and the outdoor unit.

(2) Match the terminal numbers and connection cable

colours of the indoor unit and the outdoor unit.

Erroneous wiring may cause burning of the electric

parts.

(3) Connect the connection cables ﬁ rmly to the terminal

block. Imperfect installation may cause a ﬁ re.

(4) Always fasten the outside covering of the connection

cable with the cable clamp. (If the insulator is chafed,

electric leakage may occur.)

(5) Always connect the ground wire.

HOW TO CONNECT WIRING TO TERMINALS

(1) Cut the cable end with a wire cutter or

wire-cutting pliers, then strip the insulation

to about 25 mm (15/16") to expose the

solid cable.

(2) Using a screwdriver, remove the terminal

screw(s) on the terminal board.

(3) Using pliers, bend the solid cable to form

a loop suitable for the terminal screw.

(4) Shape the loop cable properly, place it on the terminal board and

tighten securely with the terminal screw using a screwdriver.

A. For solid core wiring (or F-cable)

(1) Cut the cable end with a wire cutter or

wire-cutting pliers, then strip the insulation

to about 10 mm (3/8") to expose the

strand wiring.

(2) Using a screwdriver, remove the terminal

screw(s) on the terminal board.

(3) Using a ring terminal fastener or pliers,

securely clamp a ring terminal to each

stripped cable end.

(4) Position the round terminal cable, and replace and tighten the

terminal screw using a screwdriver.

B. For strand wiring

Tightening torque [N·m (kgf·cm)]

M4 screw 1.2 to 1.8 (12 to 18)

M5 screw 2.0 to 3.0 (20 to 30)

Check that:

• When connected from the left rear, the drain hose is at the bottom

left of the wall pipe.

(For connection from the left rear)

FINISHING

1. CONNECTION PIPE, CABLE AND DRAIN HOSE

(1) Insulate between pipes.

(2) Temporarily fasten the connection cable along the connection pipe

with vinyl tape. (Wrap to about 1/3 the width of the tape from the

bottom of the pipe so that water does not enter.)

(3) Fasten the connection pipe to the outside wall with a saddle, etc.

(4) Fill the gap between the outside wall pipe hole and the pipe with

sealer so that rain water and wind cannot blow in.

[(A)Rear, (B)Right, and (C)Bottom piping]

• Overlap the connection pipe heat insulation and indoor unit pipe

heat insulation and bind them with vinyl tape so that there is no

gap.

[(D)Left bottom piping, (E)Left piping, (F)Center piping,

and (G)Left rear piping]

• Butt the connection pipe heat insulation and indoor unit pipe heat

insulation together and bind them with vinyl tape so that there is

no gap.

• Wrap the area which accommodates the rear piping housing

section with cloth tape.

• Bind the connection cable to the top of the pipe with vinyl tape.

Check that:

• The top and bottom hooks are hooked ﬁ rmly and the indoor unit

does not move to the front and rear or left and right.

• The indoor unit is accurately positioned horizontally and vertically.

2. INSTALLING FINAL PARTS

(1) Secure the cable clamp with tapping screw.

(2) Secure the wire cover and tapping screw.

(3) Close the intake grille.

(5) Fasten the drain hose to the outside wall, etc.

WIRED REMOTE CONTROLLER

INSTALLATION (Optional)

PUMP DOWN OPERATION

(FORCED COOLING OPERATION)

TEST RUN

CUSTOMER GUIDANCE

• Perform test operation and check items 1 and 2 below.

• For the test operation method, refer to the operating manual.

• The outdoor unit, may not operate, depending on the room

temperature. In this case, press the TEST RUN button on the remote

controller while the air conditioner is running, (Point the transmitter

section of the remote controller toward the air conditioner and press

the TEST RUN button with the tip of a ball-point pen, etc.)

• To end test operation, press the remote controller START/STOP

button. (When the air conditioner is run by pressing the TEST RUN

button, the OPERATION indicator lamp and TIMER indicator lamp will

simultaneously ﬂ ash slowly.)

Before install wired remote controller

• The wired remote controller is an option.

It isn’t included in main body of air conditioner.

• When you use wired remote controller, some functions may not be

used.

• Please use the recommended wired remote controller.

CAUTION

(1) Before installing, be sure to disconnect all power

supply.

(2) Don’t touch the heat exchanger.

(3) During installing or removing operation, be sure not

to have wire caught by parts or draw it hard.

Or it may result troubles to the air conditioner.

(4) Avoid place in direct sunlight.

(5) Select place that will not be affected by the heat from

a stove, etc.

(6) Insure the length of cable is not over the

recommended maximum length.

(7) Before setting up the wired remote controller, please

conﬁ rm whether air conditioner can receive the

signal.

1. Front panel, control cover and display case

removal

(1) Refer to “FRONT PANEL REMOVAL AND INSTALLATION”

to remove the front panel.

(2) Remove the screw then remove the control cover.

(3) Remove the display case and connector.

2. Connecting to control unit of cable

(1) Pass the connector from the hole in the back.

(2) Connect the cable of wired remote controller to the board of Control

unit.

(3) Hook the cable to the rib.

(4) Use cable clamper and screw to fasten the cable.

3. Front panel, control cover and display case

installation

• Install front panel, control cover and display case by the reverse

procedures as stated in “1. FRONT PANEL, CONTROL COVER AND

DISPLAY CASE REMOVAL”.

WARNING

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 opened 3-way

valve. This may cause abnormal pressure in the

refrigeration cycle that leads to breakage and even injury.

To avoid discharging refrigerant into the atmosphere at the time of

relocation or disposal, recover refrigerant by doing the cooling operation

or forced cooling operation according to the following procedure.

(When the cooling operation cannot start in winter, and so on, start the

forced cooling operation.)

(1) Do the air purging of the charge hose by connecting the charging

hose of gauge manifold to the charging port of 3 way valve (large)

and opening the low-pressure valve slightly.

(2) Close the valve stem of 2-way valve (small) completely.

(3) Start the cooling operation or following forced cooling operation.

When using the remote controller;

• Press the TEST RUN button after starting the cooling operation by

the remote controller.

• The operation indicator lamp and timer indicator lamp will ﬂ ash

simultaneously during test run.

When using the MANUAL AUTO button of the indoor unit;

(The remote controller is lost, and so on.)

• Keep on pressing the MANUAL AUTO button of the indoor unit for

more than 10 seconds.

(The forced cooling operation cannot start if the MANUAL AUTO

button is not kept on pressing for more than 10 seconds.)

(4) Close the valve stem of 3-way valve (large) when the reading on the

compound pressure gauge becomes 0.05~0 MPa (0.5 ~ 0 kg/cm²).

(5) Stop the operation.

When using the remote controller;

• Press the START/STOP button of the remote controller to stop the

operation.

When using the MANUAL AUTO button of the indoor unit;

• Press the MANUAL AUTO button when stopping the operation

from indoor unit side.

(It is not necessary to press on keeping for more than 10 seconds.)

Explain the followings to the customer in accordance with the operating

manual:

(1) Starting and stopping method, operation switching, temperature

adjustment, timer, airﬂ ow switching, and other remote controller

operations.

(2) Air ﬁ lter removal and cleaning, and how to use the airﬂ ow direction

louvers.

(3) Give the operating manual and installation manual to the customer.

(4) If the custom code is changed, explain to the customer how it

changed (the system returns to custom code A when the batteries in

the remote controller are replaced).

*(4) is applicable to using wireless remote controller.

Perform the “FUNCTION SETTING” according to the installation

conditions using the remote controller.

CAUTION

Conﬁ rm whether the wiring work for Outdoor unit or

Branch box has been ﬁ nished.

Conﬁ rm that the cover for the electrical enclosure on the

outdoor unit is in place.

• This procedure changes to the function settings used to control the indoor

unit according to the installation conditions. Incorrect settings can cause

the indoor unit to malfunction.

• After the power is turned on, perform the “FUNCTION SETTING”

according to the installation conditions using the remote controller.

• The settings may be selected between the following two: Function

Number or Setting Value.

• Settings will not be changed if invalid numbers or setting values are

selected.

• Refer to the installation manual enclosed with the remote controller

when the wired remote controller (option) is used.

Entering the Function Setting Mode

While pressing the FAN button and SET TEMP. (

) simultaneously,

press the RESET button to enter the function setting mode.

STEP 1

Selecting the Remote Controller Custom Code

Use the following steps to select the custom

code of the remote controller. (Note that the

air conditioner cannot receive a signal if the air

conditioner has not been set for the correct custom

code.)

The custom codes that are set through this

process are applicable only during the FUNCTION

SETTING process. For details on how to set the

custom codes through the normal process, refer to

“Remote controller custom code setting”.

(1) Press SET TEMP. (

) ( ) button to change

the custom code between . Match

the code on the display to the air conditioner

custom code (initially set to ). (If the custom

code does not need to be selected, press the

MODE button and proceed to STEP 2.)

(2) Press the TIMER MODE button and check that

the indoor unit can receive signals at the displayed custom code.

(3) Press the MODE button to accept the custom code, and proceed to

STEP 2.

Remote controller custom code setting

When 2 or more air conditioners are installed in a room and the remote

controller is operating an air conditioner other than the one you wish to

set, change the custom code of the remote controller to operate only the

air conditioner you wish to set (4 selections possible).

• Conﬁ rm the setting of the remote controller custom code and the

function setting. If these do not match, the remote controller cannot be

used to operate for the air conditioner.

Selecting the Remote Controller Custom Code

Use the following steps to select the custom

code of the remote controller. (Note that the

air conditioner cannot receive a signal if the air

conditioner has not been set for the correct custom

code.)

(1) Press the START/STOP button until only the

clock is displayed on the remote controller

display.

(2) Press the MODE button for at least 5 seconds

to display the current custom code (initially set

(3) Press SET TEMP. ( ) ( ) button to change

the custom code between . Match the code on the

display to the air conditioner custom code.

(4) Press the MODE button again to return to the clock display. The

custom code will be changed.

If no buttons are pressed within 30 seconds after the custom code

is displayed, the system returns to the original clock display. In this

case, start again from step 1.

The air conditioner custom code is set to A prior to shipment.

The remote controller resets to custom code A when the batteries

in the remote controller are replaced. If you use a custom code

other than custom code A, reset the custom code after replacing the

batteries.

If you do not know the air conditioner custom code setting, try each

of the custom codes (

) until you ﬁ nd the code which

operates the air conditioner.

FUNCTION SETTING

STEP 2

Selecting the Function Number and Setting Value

(1) Press the SET TEMP. (

) ( )

buttons to select the function number.

(Press the MODE button to switch

between the left and right digits.)

(2) Press the FAN button to proceed to

setting the value. (Press the FAN

button again to return to the function

number selection.)

(3) Press the SET TEMP. (

) ( )

buttons to select the setting value.

(Press the MODE button to switch

between the left and right digits.)

(4) Press the TIMER MODE button, then

the START/STOP button in order to ﬁ x

the settings.

(5) Press the RESET button to end the function setting mode.

(6) After completing the FUNCTION SETTING, be sure to turn off the

power and turn it on again.

Function number

Setting

value

CAUTION

(1) When moving and installing the air conditioner, do not

mix gas other than the speciﬁ ed refrigerant (R410A)

inside the refrigerant cycle.

(2) When charging the refrigerant R410A, always use an

electronic balance for refrigerant charging (to measure

the refrigerant by weight).

(3) 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 side whose composition

is stable.

Gas

Liquid

R410A

(4) Add refrigerant from the charging valve after the

completion of the work.

(5) If the units are further apart than the maximum pipe

length, correct operation cannot be guaranteed.

CAUTION

After turning off the power, wait 30 seconds or more

before turning on it again.

The Function Setting does not become active unless the

power is turned off then on again.

Room temperature control for cooling

Depending on the installed environment, correction of the room

temperature sensor may be required. Select the appropriate control

setting according to the installed environment.

(♦... Factory setting)

Function Number Setting Value Setting Description

00 Standard

♦

01 Lower control

Auto Restart

Enable or disable automatic restart after a power interruption.

(♦... Factory setting)

Function Number Setting Value Setting Description

00 Enable

♦

01 Disable

* Auto restart is an emergency function such as for power outage etc.

Do not attempt to use this function in normal operation. Be sure to

operate the unit by remote controller or other external input device.

Room temperature sensor switching

(Only for wired remote controller)

When using the wired remote controller temperature sensor, change the

setting to “Both” (01).

(♦... Factory setting)

Function Number Setting Value Setting Description

00 Indoor unit

♦

01 Both

00: Sensor on the indoor unit is active.

01: Sensors on both indoor unit and wired remote controller are active.

* Remote controller sensor must be turned on by using the remote

controller

Remote controller custom code

(Only for wireless remote controller)

The indoor unit custom code can be changed.

Select the appropriate custom code.

(♦... Factory setting)

Function Number Setting Value

Setting Description

♦

Setting record

Record any changes to the settings in the following table.

Function Setting Setting Value

Room temperature control for cooling

Auto restart

Room temperature sensor switching

Remote controller custom code

After completing the FUNCTION SETTING, be sure to turn off the power

and turn it on again.

Pipe length

Less than

7.5 m

10 m 15 m 20 m g/m

Additional charge

amount

None 50 g 150 g 250 g 20 g/m

1. CONNECTION DIAGRAM

[Heat & Cool model (Reverse cycle)]

2. INDOOR UNIT SIDE

(1) Open the intake grille. Remove the tapping screw for the wire cover

and remove the wire cover.

(2) Remove the tapping screw and while minding the cable clamp hook,

remove the cable clamp.

(3) Connect the end of the connection cable fully into the terminal block.

[Cooling model]

[Heat & Cool model (Reverse cycle)]

3. OUTDOOR UNIT SIDE

CAUTION

Use VW-1, 12 mm diameter, 0.5 to 1.0 mm thick,

connection PVC tube as the insulation tube.

(1) Remove the outdoor unit terminal cover and cable clamp.

(2) Put the connection cable through the insulation tube.

[Cooling model]

[Heat & Cool model (Reverse cycle)]

(3) Process the end of the connection cables to the dimensions shown in

ﬁ gure below.

(4) Connect the end of the connection cable fully into the terminal block

and fasten with the screws.

(5) Secure the connection cables with the cable clamps to be mounted

on the insulation tubes.

(6) Put the terminal cover back after completion of the work.

REMOTE CONTROLLER

INSTALLATION

CAUTION

(1) Check that the indoor unit correctly receives the

signal from the remote controller, then install the

remote controller holder.

(2) Select the remote controller holder mounting location

by paying careful attention to the following:

• Avoid places in direct sunlight.

• Select a place that will not be affected by the heat

from a stove, etc.

REMOTE CONTROLLER HOLDER INSTALLATION

• Install the remote controller with in a distance of 7 m between the

remote controller and the signal receiver as the criteria. However, when

installing the remote controller holder, check that it operates correctly.

• Install the remote controller holder to a wall, pillar, etc. with the tapping

screw.

CHECK ITEMS

1. INDOOR UNIT

(1) Is operation of each button on the remote controller normal?

(2) Does each lamp light normally?

(3) Do the Airﬂ ow direction louvers operate normally?

(4) Is the drain normal?

(5) Is there any abnormal noise and vibration during operation?

2. OUTDOOR UNIT

(1) Is there any abnormal noise and vibration during operation?

(2) Will noise, wind, or drain water from the unit disturb the neighbours?

(3) Is there any gas leakage?

9385991361-EN.indd 29385991361-EN.indd 2 9/22/2560 BE 15:019/22/2560 BE 15:01

Fujitsu ASGA18FMTB-U Installation guide

Brand: Fujitsu

Model: ASGA18FMTB-U

Category: Split-system air conditioners

Type: Installation guide

This manual is also suitable for

ASGA24FMTB-U

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Fujitsu ASGA18FMTB-U Installation guide

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Fujitsu ASGA18FMTB-U Installation guide

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