Friedrich M18cj, M18yj Owner's Manual

Installation Manual

TYPE : WALL MOUNTED

Applied Models :
M18YJ
M18CJ

ENGLISH

FRANÇAIS ESPAÑOL

960-911-02

2

ENGLISH

• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.

• Block sunlight with blinds or curtains while you are operating the air conditioner.

• Keep doors or windows closed tightly while you are operating the air conditioner.

• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.

• Speed up the fan to cool or warm indoor air quickly, in a short period of time.

• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air
conditioner is used for many hours.

• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:

Model number :

Serial number :

You can find them on a label on the side of each unit.

Dealer’s name :

Date of purchase :

Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:

TIPS FOR SAVING ENERGY

3

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IMPORTANT SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product.

WARNING

It can result in serious injury or death when the directions are ignored.

CAUTION

It can result in minor injury or product damage when the directions are ignored.

WARNING

• Installation or repairs made by unqualified persons can result in hazards to you and others.

• Air conditioner Shall be installed in accordance with national wiring regulations.

• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similary qualified persons in order to avoid a hazard.

• The information contained in the manual is intended for use by a qualified service technician familiar
with safety procedures and equipped with the proper tools and test instruments.

• Failure to carefully read and follow all instructions in this manual can result in equipment malfunction,
property damage, personal injury and/or death.

Installation

• Always perform grounding.

- Otherwise, it may cause electrical shock.

• Don’t use a power cord, a plug or a loose socket which is damaged.

- Otherwise, it may cause a fire or electrical shock.

• For installation of the product, always contact the service center or a professional installation agency.

- Otherwise, it may cause a fire, electrical shock, explosion or injury.

• Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit.

- If the electrical part cover of the indoor unit and the service panel of the outdoor unit are not

attached securely, it could result in a fire or electric shock due to dust, water, etc.

• Always install an air leakage breaker and a dedicated switching board.

- No installation may cause a fire and electrical shock.

• Do not keep or use flammable gases or combustibles near the air conditioner.

- Otherwise, it may cause a fire or the failure of product.

• Ensure that an installation frame of the outdoor unit is not damaged due to use for a long time.

- It may cause injury or an accident.

• Do not disassemble or repair the product randomly.

- It will cause a fire or electrical shock.

• Do not install the product at a place that ther is concern of falling down.

- Otherwise, it may result in personal injury.

• Use caution when unpacking and installing.

- Sharp edges may cause injury.

• Thickness of copper pipes used are as shown “Flaring work” Table.

- Never use copper pipes thinner than that in the table even when it is available on the market

• Do not use copper pipes having a collapsed.

!

!

!

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- Otherwise, the expansion valve or capillary tube may become blocked with contaminants.

• For R410A model, use piping, flare nut and tools which is specified for R410A refrigerant.

- Using of (R22) piping, flare nut and tools may cause abnormally high pressure in the refrigerant
cycle (piping), and possibly result in explosion and injury.

• It is desirable that the amount of residual oil less than 40 mg/10m.

Operation

• Do not share the outlet with other appliances.

- It will cause an electric shock or a fire due to heat generation.

• Do not use the damaged power cord.

- Otherwise, it may cause a fire or electrical shock.

• Do not modify or extend the power cord randomly.

- Otherwise, it may cause a fire or electrical shock.

• Take care so that the power cord may not be pulled during operation.

- Otherwise, it may cause a fire or electrical shock.

• Unplug the unit if strange sounds, smell, or smoke comes from it.

- Otherwise, it may cause electrical shock or a fire.

• Keep the flames away.

- Otherwise, it may cause a fire.

• Take the power plug out if necessary, holding the head of the plug and do not touch it with wet hands.

- Otherwise, it may cause a fire or electrical shock.

• Do not use the power cord near the heating tools.

- Otherwise, it may cause a fire and electrical shock.

• Do not open the suction inlet of the indoor/outdoor unit during operation.

- Otherwise, it may electrical shock and failure.

• Do not allow water to run into electrical parts.

- Otherwise, it may cause the failure of machine or electrical shock.

• Hold the plug by the head when taking it out.

- It may cause electric shock and damage.

• Never touch the metal parts of the unit when removing the filter.

- They are sharp and may cause injury.

• Do not step on the indoor/outdoor unit and do not put anything on it.

- It may cause an injury through dropping of the unit or falling down.

• Do not place a heavy object on the power cord.

- Otherwise, it may cause a fire or electrical shock.

• When the product is submerged into water, always contact the service center.

- Otherwise, it may cause a fire or electrical shock.

• Take care so that children may not step on the outdoor unit.

- Otherwise, children may be seriously injured due to falling down.

CAUTION

!

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Installation

• Install the drain hose to ensure that drain can be securely done.

- Otherwise, it may cause water leakage.

• Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to
the neighbors.

- Otherwise, it may cause dispute with the neighbors.

• Always inspect gas leakage after the installation and repair of product.

- Otherwise, it may cause the failure of product.

• Keep level parallel in installing the product.

- Otherwise, it may cause vibration or water leakage.

Operation

• Avoid excessive cooling and perform ventilation sometimes.

- Otherwise, it may do harm to your health.

• Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent.

- The appearance of the air conditioner may deteriorate, change color, or develop surface flaws.

• Do not use an appliance for special purposes such as preserving animals vegetables, precision
machine, or art articles.

- Otherwise, it may damage your properties.

• Do not place obstacles around the flow inlet or outlet.

- Otherwise, it may cause the failure of appliance or an accident.

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TABLE OF CONTENTS

2 TIPS FOR SAVING EN-

ERGY

3 IMPORTANT SAFETY IN-

STRUCTIONS

7 INSTALLATION PARTS

7 INSTALLATION TOOLS

8 INSTALLATION MAP

9 INSTALLATION

9 Select the best Location

10 Fixing Installation Plate

10 Drill a Hole in the Wall

10 Flaring Work

11 Connecting the Piping

17 Connecting the Cables

19 Checking the Drainage

20 Routing the piping

21 Leak testing

25 Test Running

26 Coastal installation guidelines

27 Operation ranges

27 Piping Length and Elevation

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INSTALLATION TOOLS

INSTALLATION PARTS

Name

Quantity

Shape

Installation plate

1 EA

Type "A" screw

8 EA

Type "B" screw

2 EA

Type "C" screw

2 EA

Remote control

holder

1 EA

The feature can be changed according to the type of model.

Screws for fixing panels are attached to decoration panel.

Figure FigureName

Screw driver

Name

Multi-meter

Electric drill

Measuring tape, Knife

Allen wrench

Amp meter

Hole core drill

Adjustable wrench

Torque wrench

Leak Detector

Thermometer,

Level

Flaring tool set

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INSTALLATION MAP

NOTE

!

• You should purchase the installation parts.

* The feature can be changed according to the type of model.

Saddle (*)

Installation plate

Sleeve (*)
Bushing-Sleeve (*)
Putty(Gum Type Sealant) (*)

Bend the pipe as closely
on the wall as possible,
but be careful that it
doesn't break.

Vinyl tape (Wide) (*)

• Apply after carrying out a
drainage test.

• To carry out the drainage
test, remove the air filters
and pour water into the heat
exchanger.

Air Inlet

Air Outlet

Base Plate

Gas side piping
Liquid side piping
Additional drain pipe

Vinyl tape (Narrow)
Drain Hose
Connecting cable (*)

Tubing Cover

(*)

(*)

(*)

(*)

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Select the best Location

Indoor unit

- There should not be any heat or steam near
the unit.

- Select a place where there are no obstacles
around the unit.

- Make sure that condensation drainage can
be conveniently routed away.

- Do not install near a doorway.

- Ensure that the gap between a wall and the
left (or right) of the unit is more than 4in.
The unit should be installed as high as possi­ble on the wall, allowing a minimum of 8in
from ceiling.

- Use a metal detector to locate studs to pre­vent unnecessary damage to the wall.

* Recommended height 6.5ft from the floor
* The feature can be changed according to the

type of model.

Outdoor unit

- If an awning is built over the unit to prevent
direct sunlight or rain exposure, make sure
that heat radiation from the condenser is not
restricted.

- Ensure that the space around the back side
and other sides is more than 12in. The space
in front of the unit should be more than 28in.

- Do not place animals and plants in the path
of the warm air.

- Take the weight of the air conditioner into
account and select a place where noise and
vibration are minimum.

- Select a place where the warm air and noise
from the air conditioner do not disturb neigh­bors.

INSTALLATION

NOTE

!

Remove obstructions to prevent blockage
of airflow path.

More than

4in

More than 8in

More than

4in

(Unit : in)

More than

12in

Fence or

obstacles

Sunroof

More than

28in

More than

24in

(Unit : in)

More than

12in

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Fixing Installation Plate

The wall you select should be strong and solid
enough to prevent vibration

1 Mount the installation plate on the wall with

type "A" screws. If mounting the unit on a
concrete wall, use anchor bolts.

- Mount the installation plate horizontally by
aligning the centerline using Horizontal
meter.

2

Measure the wall and mark the centerline. It is
also important to use caution concerning the
location of the installation plate. Routing of the
wiring to power outlets is through the walls typ­ically. Drilling the hole through the wall for pip­ing connections must be done safely.

Drill a Hole in the Wall

- Drill the piping hole with a ø65mm hole core
drill. Drill the piping hole at either the right or
the left with the hole slightly slanted to the
outdoor side.

Flaring Work

Main cause for gas leakage is due to defect of
flaring work. Carry out correct flaring work in
the following procedure.

1 Use the piping kit accessory or the pipes

purchased locally.

2 Measure the distance between the indoor

and the outdoor unit.

3 Cut the pipes a little longer than measured

distance.

4 Cut the cable 1.5m (4.9 ft) longer than the

pipe length.

CAUTION

Use the sleeve to prevent damage for
tube assembly.

!

Cut the pipes and the cable

Both Installation Plates can be used for
this model.

Installation Plate

Type "A" Screws

Chassis

Hook

460 567

Unit
Outline

Ø65

Left
rear
piping

Ø65

Left Rear
Piping

220

Unit Outline

2.72in
(69mm)

4.13in

(105mm)

Place a level on raised tab

Installation plate

184

Place a level on raised tab

18.11in (460mm) 22.44in (570mm)

(Unit : mm)

Installation Plate
Measuring Tape

Measuring Tape

Hanger

Ø65

Right Rear

156

Piping

307

2.20in
(56mm)

(Unit : in)

Ø65

Right
rear
piping

8.15 in

(207mm)

WALL

Indoor

Outdoor

Bushing

Sleeve

5-7mm

(3/16"~5/16")

Copper

pipe

90°

Slanted Uneven Rough

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Pipe

Reamer

Point down

1. Completely remove all burrs from the cut
cross section of pipe/tube.

2. While removing burrs put the end of the
copper tube/pipe in a downward direction
while removing burrs location is also
changed in order to avoid dropping burrs
into the tubing.

- Remove flare nuts attached to indoor and

outdoor units, then put them on the pipe/tube
which have completed its burr removal.
(not possible to put them on after finishing
flare work)

Flaring work

1 Firmly hold copper pipe in a bar with the

dimension shown in table below.

2 Carry out flaring work with the flaring tool.

1 Compare the flared work with the figures

given below.

2 If a flared section is defective, cut it off and

do flaring work again.

Connecting the Piping

1 Pull the screw caps at the bottom of the

indoor unit

2 Remove the chassis cover from the unit by

loosing 3 screws

Burrs removal

Putting nut on

Check

Chassis cover

Outside diameter A Thickness

mm inch mm mm

Ø6.35 1/4" 1.1~1.3 0.7

Ø9.52 3/8" 1.5~1.7 0.8

Ø12.7 1/2" 1.6~1.8 0.8

Ø15.88 5/8" 1.6~1.8 1.0

Flare nut

Copper tube

Handle

Bar

"A"

Bar

Yoke

Cone

Copper pipe

Clamp handle

Red arrow mark

Smooth all round

Even length

all round

Inside is shiny without scratches

= Improper flaring =

Surface

damaged

Cracked Uneven

Inclined

thickness

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3 Pull back the tubing holder.
4 Remove the pipe port cover and position

the piping.

* The feature can be changed according to the

type of model.

- Press the tubing cover and slowly unfold the
tubing to downward. And then bend to the
left side slowly.

- Following bending case from right to left
directly may cause damage to the tubing.

* The feature can be changed according to the

type of model.

CAUTION

Installation Information. For right piping.
Follow the instruction above.

!

Good case

Bad case

Type “D” Screw

- Before bending the tubing, set the conduit
like picture below by using the bracket and
black screws from accessory kit.

Back side view

Right

Tubing holder

Backwards

Left

Pipe Port

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Installation of Indoor Unit

1

Hook the indoor unit onto the upper portion
of the installation plate.( engage the three
hooks at the top of the indoor unit with the
upper edge of the installation plate) Ensure
that the hooks are properly seated on the
installation plate by moving it left and right

2

Unlock the tubing holder from the chassis

and mount between the chassis and instal-

lation plate in order to separate the bottom

side of the indoor unit from the wall.

* The feature can be changed according to the

type of model.

1

Raise the cover of terminal block.

2

Insert the connecting cable through the
bottom side of indoor unit and connect the
cable. (You can see detail contents in
‘Connecting the cables’ section.)

<Left side piping>

Piping

1

2

Installation plate

Tubing Holder

Control Cover

1(L1) 2(L2)

1(L1) 2(L2)

3

3

Power connecting cable

View

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* The feature can be changed according to

the type of model.

<Left side piping>

<Right side piping>

Drain hose

Connecting pipe

Connecting
cable

Tape

Drain hose

Indoor Outdoor

Indoor Unit
Drain hose

Indoor Unit
Drain hose

Insulation

(More than 100~300mm

length and 7mm thickness)

Extension
drain hose

CAUTION

If the extension drain hose is routed inside
the room, insulate the hose with an insula­tion material* so that dripping from sweat­ing (condensation) could not damage fur­niture or floors.

• Foamed polyethylene or equivalent is
recommended.

!

CAUTION

Must use the elbow type
(L-Type) conduit

Method:

1. Disassemble bracket

(from indoor unit)

2. Assemble it with conduit

3. Reassemble it with indoor

unit.

!

3 Tape the tubing pipe, drain hose and the

connection cable. Be sure that the drain
hose is located at the lowest side of the
bundle. Locating at the upper side can
cause overflow from the drain pan through
the inside of the unit.

<Right side piping>

View

NOTE

!

Insert the drain hose at left side when you
use left side piping type.

Tape

Connecting
cable

Drain hose

Connecting pipe

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1 Align the center of the pipes and sufficiently

tighten the flare nut by hand

2 Tighten the flare nut with a wrench

3. When needed to extend the drain hose of
indoor unit, assembly the drain pipe as
shown on the drawing

Outside Diameter Torque

mm inch kgf·cm N·m

Ø6.35 1/4 180~250 17.6~24.5

Ø9.52 3/8 340~420 33.3~41.2

Ø12.7 1/2 550~660 53.9~64.7

Ø15.88 5/8 630~820 61.7~80.4

Connecting the installation pipe
and drain hose to the indoor unit.

Wrap the insulation material
around the connecting portion.

1 Overlap the connection pipe insulation

material and the indoor unit pipe insulation
material. Bind them together with vinyl tape
so that there may be no gap.

2 Set the tubing cutting line upward. Wrap

the area which accommodates the rear
piping housing section with vinyl tape.

3 Bundle the piping and drain hose together

by wrapping them with vinyl tape sufficient
enough to cover where they fit into the rear
piping housing section.

* Tubing cutting line have to be upward.

Indoor unit tubing Flare nut Pipes

Open-end wrench
(fixed)

Flare nut

Wrench

Indoor unit tubing

Connection
pipe

Insulation material

Cutting Line

Gas Pipe

Connection pipe
Vinyl tape (wide)

Liquid Pipe

Good Case Bad Case

Wrap with vinyl tape

Connecting cable

Vinyl tape(narrow)

Cutting Line

Indoor unit pipe

Pipe

Drain pipe

Adhesive

Indoor unit drain hose

Vinyl tape(narrow)

Wrap with vinyl tape

Pipe

Vinyl tape(wide)

Drain hose

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Finishing the indoor unit
installation

1 Mount the tubing holder in the original posi-

ton.

2 Ensure that the hooks are properly seated

on the installation plate by moving it left
and right.

3 Press the lower left and right sides of the

unit against the installation plate until the
hooks engage into their slots (clicking
sound).

4 Finish the assembly by screwing the unit to

the installation plate by using two pieces of
type "C" screws. And assemble a chassis
cover.

CAUTION

• Before finishing installation of the indoor
unit, seal the hole of a wall except the
pipe’s ways to prevent condensate from
inflow of outdoor air.

!

Connecting the Piping

- Remove the tubing cover from the unit by
loosening the screw.

- Align the center of the pipings and sufficiently
tighten the flare nut by hand.

Tubing
Cover

Cover
control

Terminal Block

Outdoor unit

Type 'C' screw

17

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Connecting the Cables

Connect the cable to the indoor unit by con­necting the wires to the terminals on the con­trol board individually according to the outdoor
unit connection. (Ensure that the color of the
wires of the outdoor unit and the terminal No.
are the same as those of the indoor unit.)

CAUTION

- The circuit diagram is a subject to
change without notice.

- The earth wire should be longer than the
common wires.

- When installing, refer to the circuit dia­gram on the chassis cover.

- Connect the wires firmly so that they
may not be pulled out easily.

- Connect the wires according to color
codes, referring to the wiring diagram.

!

CAUTION

The power cord connected to the outdoor
unit should be complied with the following
specifications (UL recognized or CSA
certified).

!

CAUTION

- Assemble it with conduit.

!

- Finally, tighten the flare nut with torque
wrench until the wrench clicks.
When tightening the flare nut with torque
wrench, ensure the direction for tightening
follows the arrow on the wrench.

Outdoor unit

Torque wrench

Liquid side piping

(Smaller diameter)

Gas side piping

(Bigger diameter)

Outside Diameter Torque

mm inch kgf·cm N·m

Ø6.35 1/4 180~250 17.6~24.5

Ø9.52 3/8 340~420 33.3~41.2

Ø12.7 1/2 550~660 53.9~64.7

Ø15.88 5/8 630~820 61.7~80.4

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CAUTION

Provide the circuit breaker between power
source and the unit as shown by

!

The power connecting cable connected to the
indoor and outdoor unit should be complied
with the following specifications (UL
recognized or CSA certified).

Power

Capacity(Btu/h)

18k

"A" 14

Connecting

Cable

Capacity(Btu/h)

18k

"B" 18

Connecting cable

Power supply cable

Outdoor unit

- Connect the wires to the terminals on the
control board individually.

- Secure the cable onto the control board with
the cord clamp.

- Use a recognized circuit breaker between
the power source and the unit.
A disconnecting device to adequately
disconnect all supply lines must be fitted.

*The feature can be changed according a type

of model.

Outdoor unit

Terminal block

Over 5mm

(0.2")

Cover control

Conduit panel

Connecting

cable

Power supply

cord

1(L1) 2(L2) 1(L1) 2(L2)

3

Circuit Breaker(A)

Capacity(Btu/h)

18k

20

AWG_“A”

10±3mm

GN/YL

20mm

AWG_“B”

GN/YL

10±3mm

20mm

Main power source

Air

Conditioner

Circuit Breaker
Use a circuit breake
or time delay fuse.

19

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* The feature can be changed according to the

type of model.

Checking the Drainage

1 Pour a glass of water on the evaporator.
2 Ensure the water flows through the drain

hose of the indoor unit without any leakage
and goes out the drain exit.

To check the drainage.

Drain Pan

Drain
Hose

Leakage

Checking

Connecting area

drain hose

Leakage

checking

CAUTION

According to the confirmation of the above con­ditions, prepare the wiring as follows.

1 Never fail to have an individual power circuit

specifically for the air conditioner. As for the
method of wiring, be guided by the circuit
diagram posted on the inside of control
cover.

2 The screw which fasten the wiring in the

casing of electrical fittings are liable to
become loose from vibrations to which the
unit is subjected during the transportation.
Check them and make sure that They all
are tightly fastened. (If they are loose, it
could cause burn-out of the wires.)

3 Specification of power source.
4 Confirm that electrical capacity is sufficient.
5 See that the starting voltage is maintained

at more than 90 percent of the rated voltage
marked on the name plate.

6 Confirm that the cable thickness is as speci-

fied in the power source specification.
(Particularly note the relation between cable
length and thickness.

7 Always install an earth leakage circuit

breaker in a wet or moist area.

8 The following would be caused by voltage

drop.

- Vibration of a magnetic switch, which will
damage the contact point, fuse breaking,
disturbance of the normal function of the
overload.

9 The means for disconnection from a power

supply shall be incorporated in the fixed
wiring and have an air gap contact separa­tion of at least 3mm in each active(phase)
conductors.

!

20

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2 Do not set the drain hose like the

following.

*The feature can be changed according a type

of model.

1 The drain hose should point downward for

easy drain flow.

Do not raise

Water
leakage

Accumulated
drain water

Air

Waving

Water
leakage

Tip of drain hose
dipped in water

Water
leakage

Ditch

Less than
50mm gap

Drain piping

Downward slope

Routing the piping

Form the piping by wrapping the connecting
portion of the indoor unit with insulation mate­rial and secure it with two kinds of vinyl tapes.

- If you want to connect an additional drain
hose, the end of the drain outlet should be
routed above the ground. Secure the drain
hose appropriately.

In cases, where the outdoor unit is installed
below the Indoor unit, perform the following.

1 Tape the piping, drain hose and connecting

cable from down to up.

2 Secure the tapped piping along the exterior

wall using saddle or equivalent.

In cases, where the outdoor unit is installed
above the Indoor unit, perform the following.

Drain hose

Seal small openings
around pipings with a
gum type sealant.

Saddle

Pipe

Vinyl tape(narrow)

Wrap with
vinyl tape(wide)

Connecting cable

Pipings

Taping

Drain hose

Trap is required to prevent water
from entering into electrical parts.

21

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- Preparation
Check that each tube(both liquid and gas
side tubes) between the indoor and outdoor
units have been properly connected and all
wiring for the test run has been completed.
Remove the service valve caps from both the
gas and the liquid side on the outdoor unit.
Note that both the liquid and the gas side
service valves on the outdoor unit are kept
closed at this stage.

- Leak test
Connect the manifold valve(with pressure
gauges) and dry nitrogen gas cylinder to this
service port with charge hoses.

Leak testing with vacuum pump

CAUTION

Be sure to use a manifold valve for air
purging. If it is not available, use a stop
valve for this purpose. The knob of the
3-way valve must always be kept close.

- Pressurize the system to maximum
250 P.S.I.G. (17.6 kgf/cm

2

G) (R-22
model) or 400 P.S.I.G. (28.1 kgf/cm2G)
(R-410A model) with dry nitrogen gas
and close the cylinder valve when the
gauge reading reaches 250 P.S.I.G.
(17.6 kgf/cm2G) (R-22 model) or 400
P.S.I.G. (28.1 kgf/cm2G) (R-410A model).
Next step is leak test with liquid soap.

!

CAUTION

To avoid nitrogen entering the refrigerant
system in a liquid state, the top of the
cylinder must be higher than its bottom
when you pressurize the system. Usually,
the cylinder is used in a vertical standing
position.

!

WARNING

!

There is a risk of fire and explosion.

Inert gas (nitrogen) should be used
when you check plumbing leaks, cleaning
or repairs of pipes etc.
If you are using combustible gases
including oxygen, product may have the
risk of fires and explosions.

In cases where the outdoor unit is installed
above the Indoor unit perform the following.

1 Tape the piping and connecting cable from

down to up.

2 Secure the taped piping along the exterior

wall. Form a trap to prevent water entering
the room.

3 Fix the piping onto the wall using saddle or

equivalent

Leak testing

The air and moisture remaining in the refriger­ant system have undesirable effects as indi­cated below.

- Pressure in the system rises.

- Operating current rises.

- Cooling(or heating) efficiency drops.

- Moisture in the refrigerant circuit may freeze
and block capillary tubing.

- Water may lead to corrosion of parts in the
refrigeration system.

Therefore, after evacuating the system, take a
leak test for the piping and tubing between the
indoor and outdoor unit.

Seal a small opening
around the pipings
with gum type sealant.

Trap

Trap

22

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- Do a leak test of all joints of the tubing(both
indoor and outdoor) and both gas and liquid
side service valves.
Bubbles indicate a leak. Be sure to wipe off
the soap with a clean cloth.

- After the system is found to be free of leaks,
relieve the nitrogen pressure by loosening
the charge hose connector at the nitrogen
cylinder. When the system pressure is
reduced to normal, disconnect the hose from
the cylinder.

*The feature can be changed according a type

of model.

- Remove the caps from the 2-way and 3-way
valves.

- Remove the service-port cap from the 3-way
valve.

- Apply a soap water or a liquid neutral deter­gent on the indoor unit connection or outdoor
unit connections by a soft brush to check for
leakage of the connecting points of the pip­ing.

- If bubbles come out, the pipes have leakage

Soap water method

- Connect the charge hose end described in
the preceding steps to the vacuum pump to
evacuate the tubing and indoor unit.
Confirm the "Lo" knob of the pressure Gauge
is open. Then, run the vacuum pump.
The operation time for evacuation varies with
tubing length and capacity of the pump. The
following table shows the time required for
Evacuation.

- When the desired vacuum is reached, close
the knob of the 3-way valve and stop the
vacuum pump.

Evacuation

Outdoor unit

Gas side

Liquid side

Cap

2-way valve(Close)

2-way valve(Close)

3-way valve(Close)3-way valve(Close)

2-way valve(Close)

3-way valve(Close)

Required time for Evacuation when 30 gal/h

vacuum pump is used

If tubing length is

less than 10m (33 ft)

If tubing length is

longer than 10m

(33 ft)

10 min. or more 15 min. or more

Indoor unit

Charge hose

Nitrogen gas
cylinder(in vertical
standing position)

Outdoor unit

Manifold valve

Pressure
gauge

Lo Hi

23

ENGLISH

- Replace the valve caps at both gas and liquid
side service valves and fasten them tight.
This completes air purging with a vacuum pump.

- Replace the pipe cover to the outdoor unit by
one screw
Now the air conditioner is ready for test run.

- Fix the outdoor unit with a bolt and

nut(ø10mm).

- When installing on the wall, roof or rooftop,

anchor the mounting base securely with a
nail or wire assuming the influence of wind
and earthquake.

- If the vibration of the unit is transmitted to the

pipe, secure the unit with an anti-vibration
rubber.

Anchoring of outdoor unit

- With a service valve wrench, turn the valve of
liquid side counter-clockwise to fully open the
valve

- Turn the valve of gas side counter clockwise to
fully open the valve

- Loosen the charge hose connected to the gas
side service port slightly to release the pressure,
then remove the hose.

- Replace the flare nut and its bonnet on the gas
side service port and fasten the flare nut secure­ly with an adjustable wrench. This process is
very important to prevent leakage from the sys­tem.

Finishing the Job

Indoor unit

Outdoor unit

Manifold valve

Bolt

Tubing connection

Pressure
gauge

Open

Vacuum pump

Lo Hi

Close

24

ENGLISH

Operate the unit for 15~20 minutes, then
check the system refrigerant charge:

- Measure the pressure of the gas side service
valve.

- Measure the air temperature from inlet and
outlet of air conditiioner.

- Ensure the difference between the inlet and
outlet temperature is more than 46°F.

- For reference; the gas side pressure at opti­mum condition is shown on table (cooling)

The air conditioner is now ready to use.

*The feature can be changed according a type of

model.

NOTE

!

If the actual pressure is higher than
shown, the system is most likely over­charged, and charge should be removed.
If the actual pressure are lower than
shown, the system is most likely under­charged, and charge should be added.

Evaluation of the performance

Refrigerant

Outside
ambient

TEMP.

The pressure of

the gas

side service valve.

R-22 95°F(35°C)

4~5kg/cm2G

(56.8~71.0

P.S.I.G.)

R-410A 95°F(35°C)

8.5~9.5kg/cm2G

(120~135 P.S.I.G.)

This is performed when the unit is relocated or
the refrigerant circuit is serviced.
Pump Down means collecting all refrigerant
into the outdoor unit without the loss of refrig­erant.

- Connect a low-pressure gauge manifold
hose to the charge port on the gas side serv­ice valve.

- Open the gas side service valve halfway and
purge the air in the manifold hose using the
refrigerant.

- Close the liquid side service valve(all the
way).

- Turn on the unit's operating switch and start
the cooling operation.

- When the low-pressure gauge reading
becomes 1 to 0.5kg/cm

2

G(14.2 to 7.1
P.S.I.G.), fully close the gas side valve and
then quickly turn off the unit. Now Pump
Down procedure is completed, and all refrig­erant is collected into the outdoor unit.

CAUTION

Be sure to perform Pump Down procedure
in the cooling mode.

!

Pump Down Procedure

Pump down

Inlet temperature

Discharge air

Discharge
temperature

25

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2 Insert new batteries making sure that the

(+) and (–) of battery are installed correctly.

3

Reattach the cover by pushing it back in position.

NOTE

!

• Use 2 AAA(1.5volt) batteries. Do not use
rechargeable batteries.

•

Remove the batteries from the remote con­troller if the system is not used for a long time.

Prepare remote controller

Test Running

- Check that all tubing and wiring are properly
connected.

- Check that the gas and liquid side service
valves are fully open.

Insert batteries before using the remote con­trol. The battery type used is AAA (1.5 V).

1 Remove the battery cover by pulling it ac-

cording to the arrow direction.

26

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If they outdoor equipment must be installed on
the coastal side of a building, direct exposure
to coastal winds should be avoided.

If system is to be installed in coastal area,
windbreak should be installed to protect
against excess winds, sand and salt.

Select an area with adequate drainage.

- Material such as concrete should be
considered to withstand strong coastal
winds.

- The height and width should be more than
150% of the outdoor unit.

- More than 2ft of space should be kept
between the windbreak and outdoor unit to
ensure proper airflow.

Coastal installation guidelines

CAUTION

- Air conditioners should not be installed
in areas where corrosive gases, such as
acid or alkaline gas, are produced.

- Do not install the product where it could
be exposed to sea wind (salty wind)
directly. It can result corrosion on the
product. Corrosion, particularly on the
condenser and evaporator fins, could
cause product malfunction or inefficient
performance.

!

Sea wind

Sea wind

Sea wind

Windbreak

Selecting the location(Outdoor Unit)

NOTE

!

- Periodic ( more than once/year )
cleaning of the dust or salt particles
stuck on the Condenser by using
water

* Do not use salt water to clean equip-

ment, doing so could result in equip­ment failure.

27

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Outdoor unit

Indoor unit

A

B

Outdoor unit

Indoor unit

A

B

CAUTION

Capacity is based on standard length and maximum allowable length is on the basis of
reliability. Additional refrigerant must be charged after 24.6ft(7.5m).

!

Piping Length and Elevation

Operation ranges

The table below indicates the temperature ranges the air conditioner can be Operated within.

Capacity

(Btu/h)

Pipe Size

Standard

Length

m(ft)

Max.

Elevation

Ⓑ m(ft)

Min

Length

Ⓐ m(ft)

Max.

Length

Ⓐ m(ft)

Additional Refrigerant for

longer than 7.5m(24.6ft)

GAS LIQUID

mm inch mm inch g/m oz/ft

18k Ø12.7 1/2 Ø6.35 1/4 7.5(24.6) 10(32.8) - 20(65.6) 20 0.38

Mode Indoor temperature Outdoor temperature

Cooling 64.4°F~89.6°F(18°C~32°C) -0.4°F~118.4°F(-18°C~48°C)

Heating 60.8°F~86°F(16°C~30°C) -4°F~75.2°F(-20°C~24°C)

* Cooling Only Model, Only check the temperature of the cooling mode.

28

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Manuel d'installation

SPLIT SYSTEM DUCTLESS

TYPE : MURAL

Applied Models :
M18YJ
M18CJ

FRANÇAIS

960-911-02

2

FRANÇAIS

• Evitez un refroidissement excessif des unités intérieures. Une telle application pourrait représenter un
danger pour votre santé et entraîner une plus grande consommation de courant.

• Evitez d'exposer le climatiseur aux rayons solaires à l’aide des rideaux ou des persiennes lorsqu’il est
en marche.

• Maintenez les portes et les fenêtres complètement fermées lorsque vous utilisez le climatiseur.

• Ajustez le sens du débit d’air verticalement ou horizontalement pour permettre la circulation de l’air inté­rieur.

• Accélérez le ventilateur pour refroidir ou réchauffer rapidement l’air intérieur en peu de temps.

• Ouvrez régulièrement des fenêtres pour des besoins d’aération étant donné que la qualité de l'air inté­rieur peut se détériorer si vous utilisez le climatiseur pendant plusieurs heures.

• Nettoyez le filtre à air une fois toutes les 2 semaines. La poussière et la saleté qui se sont accumulées à
l’intérieur du filtre à air peuvent empêcher la circulation de l’air ou réduire les fonctions de refroidisse­ment / déshumidification.

Pour vos archives

Agrafez votre reçu sur cette page dans le cas où vous en avez besoin pour prouver la date d’achat
ou pour des besoins de garantie. Ecrivez le numéro du modèle et le numéro de série ici:

Numéro du modèle:

Numéro de série:

Ces numéros sont disponibles sur l’étiquette de chaque côté du climatiseur.

Nom du distributeur:

Date d’achat:

Nous vous donnons ici quelques astuces qui vous permettront de minimiser la consommation
d’énergie lorsque vous utilisez le climatiseur. Vous pouvez utiliser un climatiseur de manière plus
efficace en vous référant aux instructions ci-dessous.

ASTUCES POUR ECONOMISER L’ENERGIE