Samsung AS180UE, AS181UE, AS-2408BR, AS18A1UD, AS18A1UE Service Manual

SERVICE

Manual

AS180UE
AS181UE
AS18A1UD
AS18A1UE
AS-2408BR

CONTENTSAIR CONDITIONER

1. Pre c a u t i o n s

2. Product Specifications

3. Operating Instructions and
I n s t a l l a t i o n

4. Disassembly and Reassembly

5. Tro u b l e s h o o t i n g

6. Exploded Views and Parts List

7. Block Diagrams

8. PCB Diagrams

9. Wiring Diagrams

10. Schematic Diagrams

ROOM AIR CONDITIONER

© Samsung Electronics Co., Ltd. FEB. 1999.

Printed in Korea.
Code No. DB81-10161A(3)

1) Remove power cable from power outlet.
Remove power cable from an outlet prior to disassembly for
repair.
When the power cable is removed wait for at least 1 minute
and measure the voltage between the + and - terminal of the
large capacity electrolyti capacitor using a tester. Make sure
that the voltage is less than DC 10V, then starts repairing.

2) Warning about electrical shock
If you cannot avoid checking the circuits with power not
disconnected pay special attention not to touch live parts to
avoid electric shock.

3) Use proper parts
Use genuine parts of a model if parts need to be replaced.
(It is recommended that parts are replaced rather than
repaired, to avoid electrical contact. Customers should
refrain from repairing parts themselves as this can be
extremely dangerous.)

4) Use proper tools
Use proper tools for repair and be familiarized with
handling test equipment.
Using worn out tools may result in problems such as
intermittent contact, etc.

5) Lead wire or power cable damaged
Check if lead wire or power cord is damaged prior to repair,
and replace if damaged.

6) Avoid tapping a power cord
Tapping a power cable or using an extension cord from a
power outlet is dangerous and should be avoided. It may
result is malfunctioning or fire.

7) Checking insulation
Be sure to check insulation resistance when assembly is
completed. (Check insulation resistance between the power
cord plug and ground terminal using an ohm meter and
check if it is greater than 30MΩ prior to applying the power.)

8) Check grounding
Check grounding status and fix it if not sufficient.

9) Check installation condition
Check installation condition and fix insufficient conditions.
If it is still not satisfactory find another area for installation.

10) Child care
It is recommended to have children stay away the units
when the repair is being done to avoid accidents.

Samsung Electronics

1-1

1. Precautions

dangerous

No
inter connection

Clean the unit and the area arount it.
Let the customer know that the unit has been repaired.

Brilliantly

Cleaning

1-2

Samsung Electronics

M E M O

Samsung Electronics

2-1

2. Product Specifications

2-1 AS180UE/AS181UE/AS18A1UE/AS18A1UD/AS-2408BR

M o d e l

I t e m

Ty p e ­C o o l i n g B T U / h
D e h u m i d i t y i n g l/ h
Low temp. heating B T U / h
Air volume C o o l i n g m3/ m i n
N o i s e C o o l i n g d B
E n e rgy efficiency ratio C o o l i n g B T U / h . W
Power V- H z
Power Consumption C o o l i n g W
Operating Curre n t C o o l i n g A
Power factor C o o l i n g %
S t a rting curre n t A
Power cable L e n g t h m

Number of core wire
Fuse capacity A
Outer Width x Height m m
dimension x Depth i n c h
We i g h t k g
Coolant pipe L i q u i d OD(mm) x L(m)

C o o l a n t OD(mm) x L(m)
Drain hose ID(mm)x L(m)
C o m p ressor Ty p e

M o t o r Ty p e

Rated input W
Blower Ty p e

M o t o r Ty p e

Rated input W

Heat exchanger
Coolant control unit
F reezer oil capacity c c
Coolant to charg e ( R - 2 2 ) g
Cooling test Condition

Maximum operation Condition

A S 1 8 0 U E / A S 1 8 1 U E / A S 1 8 A 1 U E

Indoor unit Outdoor unit

Wa l l - m o u n t i n g

1 7 , 5 0 0 ( * 1 7 , 0 0 0 )

1 . 6

-

1 3 . 8

4 5 5 5

9 . 7 ( * 9 . 4 )

1-220 / 240-50

1 8 0 0

8 . 0

93.8 (at 240V)
4 0

6 . 2

3G x 2.5mm2/ A re a

3 . 1 5 ­1 0 5 0 x 2 9 8 x 1 8 0 7 8 7 x 6 2 0 x 3 2 0
4 1 . 3 4 x 1 1 . 7 3 x 7 . 0 9 3 0 . 9 8 x 2 4 . 4 x 1 2 . 6

1 3 4 6

ø6.35 x 5
ø12.7 x 5

ø17 x 2

- R o t a ry

- -

- 1 8 5 5

C ro s s - f a n P ro p e l l e r

R e s i n S t e e l

3 0 6 0

2Row 12Step 2Row 24Step

C A P I L L A RY TUBE

6 0 0

1 , 5 8 0

P e rf o r­m a n c e

P o w e r
E l e c t r i ­c a l
C h a r a ­c t e r i s­t i c s

P ro d u c t

INDOOR UNIT : DB 27°C W B 1 9 ° C
OUTDOOR UNIT : DB35°C W B 2 4 ° C
INDOOR UNIT : DB 32°C W B 2 3 ° C
OUTDOOR UNIT : DB 43°C W B 2 6 ° C

INDOOR UNIT : DB 27°C W B 1 9 . 5 ° C
OUTDOOR UNIT : DB35°C W B 2 4 ° C
INDOOR UNIT : DB 32°C W B 2 2 . 5 ° C
OUTDOOR UNIT: DB 43°C W B 2 5 . 5 ° C

AS18A1UD

Indoor unit Outdoor unit

Wa l l - m o u n t i n g

17,000 (5,000W)

1 . 6

-

1 3 . 8

4 5 5 5

9 . 2

1-200 / 220-50

1 8 5 0

9 . 3

90.9 (at 220V)
4 0

6 . 2

3G x 2.5mm2/ A re a

3 . 1 5 ­1 0 5 0 x 2 9 8 x 1 8 0 7 8 7 x 6 2 0 x 3 2 0
4 1 . 3 4 x 1 1 . 7 3 x 7 . 0 9 3 0 . 9 8 x 2 4 . 4 x 1 2 . 6

1 3 4 6

ø6.35 x 5
ø12.7 x 5

ø17 x 2

- R o t a ry

- -

- 1 8 5 5

C ro s s - f a n P ro p e l l e r

R e s i n S t e e l

3 0 6 0

2Row 12Step 2Row 24Step

C A P I L L A RY TUBE

6 0 0

1 , 1 8 0

AS-2408BR

Indoor unit Outdoor unit

Wa l l - m o u n t i n g

2 2 , 0 0 0

2 . 8

-

1 4 . 3

4 6 5 6

1 0 . 5

1 - 2 2 0 - 6 0

2 1 0 0

1 0 . 0
9 5 . 4

5 0
6 . 2

3G, AW G 1 4

3 . 1 5 ­1 0 5 0 x 2 9 8 x 1 8 0 7 8 7 x 6 2 0 x 3 2 0
4 1 . 3 4 x 1 1 . 7 3 x 7 . 0 9 3 0 . 9 8 x 2 4 . 4 x 1 2 . 6

1 3 4 6

ø6.35 x 5
ø15.8 x 5

ø17 x 2

- R o t a ry

- -

- 2 1 5 7

C ro s s - f a n P ro p e l l e r

R e s i n S t e e l

3 0 6 0

2Row 12Step 2Row 24Step

C A P I L L A RY TUBE

6 0 0

1 , 6 5 0

“*” : Tailand Only

2-2

Samsung Electronics

2-2 Dimensions

2-2-1 Indoor Unit

2-2-1 Outdoor Unit

Air
in

(Front view)

(Remote control unit)

(Rear view)

(Front view) (Rear view)

Air out

1050

787

582 340

180 63

21

(Installation plate)

250 145

260 200 100

outer edge of
indoor unit

unit : mm

Samsung Electronics

3-1

NO

1
2

3

4

5

6

7

8

9

10

11

12

13

NAMED OF KEY

ON/OFF

MODE

TURBO

MILD

Q. TIMER

FAN SPEED

SET

SWING

AUTO

TIME

TIMER/CANCEL

ON

TIMER

OFF

(UP)

TIME

(DOWN)

(UP)

TEMP

(DOWN)

SLEEP

ONE SHOT KEY
ONE SHOT KEY

OR

CONTINUOUS KEY

ONE SHOT KEY

ONE SHOT KEY

ONE SHOT KEY

OR

CONTINUOUS KEY

ONE SHOT KEY

OR

CONTINUOUS KEY

ONE SHOT KEY

OR

CONTINUOUS KEY

ONE SHOT KEY

ONE SHOT KEY

ONE SHOT KEY

ONE SHOT KEY

ONE SHOT KEY

OR

CONTINUOUS KEY

ONE SHOT KEY

OR

CONTINUOUS KEY

ONE SHOT KEY

OR

CONTINUOUS KEY

ONE SHOT KEY

FUNCTION OF KEY
Use this button to start and stop air conditioner.
Each time you press this button,

MODE is changed in the following order.

"AUTO" "COOL" "DRY" "FAN"

Use this button to provide heavy duty cooling
for 30 minutes.

Use this button to provide pleasant cooling

for 3 hours.

Set up the reserve or cancel the timer on and timer off quickly.

Each time you press this button,
FAN SPEED is changed in the following order.
"AUTO" " (L)" " (ME)" " (HI)" NATURAL

Adjusts air flow vertically.
Each time you press this button,
BLADE-H rotates by 8° (Changable range 50°).

Each time you press this button,
BLADE-H rotates within 35° and stop.

Without regard to ON/OFF condition in remote controller,
use this button to set current time.
Adjust the current time using TIME button.
(Data can be transmitted after setting up the time)

Use this button to reserve or cancel the timer on and timer off.
Set up the time that operation start.
Set up the time that operation stop.
If the TIME button is pressed once, the time increase by one

minute during the time set mode, and ten minutes during the
timer set mode.

If the TIME button is pressed once, the time decrease by one
minute during the time set mode, and ten minutes during the
timer set mode.

If the button is pressed once,
the setting temperature is increased by 1°C.

If the button is pressed once,
the setting temperature is decreased by 1°C.

Use this button for sleep operation.
(The SLEEP mode can be selected at COOL mode.

3-1-1 Name & Function of Key in remote controller

3. Operating Instructions and Installation

3-1 Operating Instructions

Operating Instructions and Installation

3-2

Samsung Electronics

1. A U TO MODE: In this mode, operation
mode (COOL) is selected automatically by
the room temperature of initial operation.

∆T= -1°, -2°C, 0°C, +1°C, +2°C
∆T is controlled by setting temperature

up/down key of remote contro l l e r

2. C O O L MODE: The unit operates accord i n g
to the diff e rence between the setting and
room temperature .
The setting temperature range is
1 8 ° C t h rough 30°C.

3. D RY MODE: The unit is operated at com­p ressor on state re g a rdless of room temper­a t u re for an initial 30 minutes of dehumidi­fication operation, and the indoor fan motor
is automatically operated due to the temper­a t u re diff e rence between the room tempera­t u re and set temperature .
The compressor is automatically contro l l e d
due to the temperature diff e rence between
room temperature and set temperature after
operation of 30 minutes.
* Set temperature: 18°C~30°C
* Protective function: Low temperature
release. (Prevention against fre e z e )

4. TURBO MODE: This mode is available only
in A U TO, COOL m o d e .
When this button is pressed at first, the air
conditioner is operated “powerful” state for
30 minutes re g a rdless of the set tempera­t u re, room temperature .
When this button is pressed again, or when
the operating time is 30 minutes, turbo
operation mode is canceled and returned to
the previous mode.

5 . MILD MODE: This mode is available only

in A U TO, COOL m o d e .
When this button is pressed at first, the air
conditioner is operated in its current state
for 3 hours.
The setting temperature is automatically
raised by 3°C.
When this button is pressed again or when
the operating time is 3 hours, mild opera­tion mode is canceled and returned to the
p revious mode.

6 . S L E E P MODE: Sleep mode is available only

in COOL m o d e .
The operation will stop after 6 hours.
* In COOL mode : The setting temperature
is automatically raised by 1°C each 1hour
When the temperature has been raised by
total of 2°C, that temperature is main­t a i n e d .

7. FAN SPEED: Manual (3 step), Auto (4 step),
N a t u r a l
Fan speed automatically varies depending
on both the diff e rence between setting and
the room temperature .

8 . C O M P U L S O RY O P E R ATION:

For operating the air conditioner without
the remote contro l l e r.
The operating is the same function that
A U TO MODE in the remote contro l l e r.
* Set temperature: 22°C

Operation Type

Cool Operation (Set Temp:24°C + ∆T)

3-1-2 Main controller function.

Operating Instructions and Installation

3-3

Samsung Electronics

9 . SWING: BLADE-H is rotated vertically by

the stepping motor.
* Memory louve: When ON/OFF button is
p ressed at stop state, the BLADE-H re t u r n s
to its original location which is operating
state before stop.
* Swing auto: The BLADE-H can ro t a t e
within about 35° in the original position set
by the SWING SET button.
* Swing set: Press the SWING SET button,
then the blade rotates vertically by 8°
The BLADE-H location is dispalyed on
REMOTE CONTROL. (total 7 steps)

1 0 . Q.TIMER: Q. timer (quick timer) allows

reservation or cancel the timer on and timer
o ff quickly.
When Q.timer button is pressed at operat­ing state, LCD displays the polling state
s e q u e n t i a l l y.
The LCD also displays the time re m a i n i n g .

11 . TIMER: The air conditioner is turned

ON/OFF at a specified time using TIMER
O N / O F F.

* Timer LED lights on.

1 2 . SELF TEST

* Interruption of electric power and Power
o n .
* Abnormal condition of the room sensor.
* Indoor unit fan motor lock.
* Abnormal condition of the indoor unit's
heat exchanger sensor.

1 3 . TIME SHORTENING: If the "Time short"

connector pin is shorted on the main P. C. B,
the compressor's three minutes delay func­tion is cancelled, and each operation time is
shortened to one fiftieth of its original time.

1 4 . BUZZER SOUND: Whenever the ON/OFF

button is pressed or whenever change
occurs to the condition which is set up or
select, the compulsory operation mode,
buzzer is sounded "beep".

3-4

Samsung Electronics

3-2 Installation

3-2-1 Selecting Area for Installation

Select an area for installation that is suitable
to the customer's needs.

3-2-1(a) Indoor Unit

1 . Make sure that you install the indoor unit in

an area providing good ventilation. It must
not be blocked by an obstacle affecting the
airflow near the air inlet and the air outlet.

2 . Make sure that you install the indoor unit in

an area allowing good air handling and
endurance of vibration of the indoor unit.

3. Make sure that you install the indoor unit in
an area where there is no source of heat or
vapor nearby.

4 . Make sure that you install the indoor unit in

an area from which hot or cool air is spre a d
evenly in a ro o m .

5 . Make sure that you install the indoor unit in

an area away from TVs, audio units, cord­less phones, fluorescent lighting fixture s
and other electrical appliances (at least 1
m e t e r ) .

6 . Make sure that you install the indoor unit in

an area which provides easy pipe connec­tion with the outdoor unit, and easy
drainage for condensed water.

7. Make sure that you install the indoor unit in
an area which is large enough to accomo­date the measurements shown in figure on
the next page.

3-2-1(b) Outdoor Unit

1 . Make sure that you install the outdoor unit

in area not exposed to the rain or direct sun
l i g h t .

(Install a separate sunblind if exposed to

d i rect sun light.)

2 . Make sure that you install the outdoor unit

in area allowing good air moment, not
amplifying noise or vibration, especially to
avoid disturbing neighbours.

(Fix the unit firmly if it is mounted in a

high place.)

3 . Make sure that you install the outdoor unit

in area providing good ventilation and
which is not dusty. It must not be blocked
by any obstacle affecting the airflow near
the air inlet and the air outlet.

4 . Make sure that you install the outdoor unit

in area free from animals or plants.

5 . Make sure that you install the outdoor unit

in area not blocking the traff i c .

6. Make sure that you install the outdoor unit
in area easy to drain condensed water fro m
the indoor unit.

7. Make sure that you install the outdoor unit
in area which provides easy connection
within the maximum allowable length of a
coolant pipe (10 meters).

Note

1. Add 10 grams of refrigerant (R-22) for

every 1 meter if the pipe length exceeds
the standard pipe length of 5 meters.

2. Maintain a height between the indoor and

outdoor units of less than 3 meters.

8 . Make sure that you install the outdoor unit

in an area which is large enough to accom­modate the measurements

shown in figure on the next page.

3-2-1(c) Remote Control Unit

1 . Make sure that you install the remote con-

t rol unit in an area free from obstacles such
as curtains etc, which may block signals
f rom the remote control unit.

2. Make sure that you install the remote con­t rol unit in an area not exposed to
d i rect sunlight, and where there is no sourc e
of heat.

3. Make sure that you install the remote con­t rol unit in an area away from TVs, audio
units, cordless phones, fluorescent lighting
f i x t u res and other electrical appliances (at
least 1 meter).

Caution :

It is harmful to the air conditioner if it is used in the following environments: greasy areas (including areas near machines),
salty areas such as coast areas, areas where sulfuric gas is present such as hot spring areas. Contact your dealer for advice.

Operating Instructions and

3-5

Samsung Electronics

3-2-2 Installation diagram of indoor unit and outdoor unit

Indoor unit check
points

Avoid up
slopes

Outdoor unit
check points

* Check for gas leak from the flare nut

connections with leak detector.

Right

Rear

Down

250mm

m i n i m u m

350mm or more

Left rear

Left

GAS LEAK TEST Slope of drain hose * Piping may be laid to the rear, left, right or down.

Insulation of pipe connection area

* Perform gas leakage test first, and insulate the pipe

connection area.
Use an insulation tube for insulation as shown in figure.

The insulation
tube shall be
properly finished
not to allow
any gap.

Vinyl tape
(purchase locally)

Insulation
tube

Hole dimension of bolts for the outdoor unit

Fix firmly if installed in an area affected by typhoons.

Tighten the flare nut by hand first, and tighten firmly with a spanner

582

ø12

Remote control

Remote control holder

10

4

5 6

C o n n e c t i o n

pipe lengh

5m max

5 ~ 1 0 m

A i r- p u rg e

m e t h o d

Refer to the

detailed

a i r- p u rg e

p ro c e d u re .

C o o l a n t
a d j u s t m e n t
u n n e c e s s a ry

Add 10g of
c o o l a n t
<R-22> for
e v e ry 1m.
(Refer to
the detailed
c o o l a n t
c h a rg e
p ro c e d u re . )

Air purg e

m e t h o d

P u rge air
using
a vacuum
pump or an

a d d i t i o n a l
c o o l a n t
c y l i n d e r.

R e f r i g e r a n t
q u a n t i t y

See table
r i g h t .

Add 10g of
c o o l a n t
<R-22> for
e v e ry 1m.
(Refer to
the detailed
c o o l a n t
c h a rg e
p ro c e d u re . )

C l a s s

Coolant adjustment pro c e d u re

Coolant adjustment pro c e d u re

kg .cmAt installation At installation

Outer diameter Fixing torque Final torque

ø6.35mm 160 200
ø12.7mm 500 550
ø15.8mm 700 750

Operating Instructions and Installation

3-6

Samsung Electronics

3-2-2(a) Fixing the Installation Plate

Installation plate

Pipe hole (ø65mm)

260mm

250mm 145mm

Indoor unit

Installation plate

Weight

200mm 100mm

250mm350mm

Pipe hole

(ø65mm)

Determine the pipe hole position for installation
and drill the pipe hole (65mm inner diameter)
so that it slants slightly downward.

1. Install the installation plate horizontally on
structural members (studs, etc.) in the wall.

2. To mount the installation plate on a concrete
wall with anchor bolts, utilize the anchor bolt
holes as illustrated in the left figure.

3. When the anchor bolts are already driven in the
wall, also utilize the anchor bolts holes to secure
the installation plate. (If an anchor bolt is too
long, adjust the projecting length to 20mm or
less.)

1. As the left Fig.
Fix the wood pillar at the wood frame and
install installation plate with screw tap.

2. Fix the wood pillar with enough strength to
bear the weight of the indoor unit.

CUTTING A HOLE

MOUNTING THE INSTALLATION PLATE

When the refrigerant piping are hooked up from the rear.

When the installation plate is directly mounted on the wall.

Wood pillarScrew wood

Mounting at the window frame.

Operating Instructions and Installation

3-7

Samsung Electronics

3-2-2(c) Piping and drain hose installation

1 . Fix the drain hose right the refrigerant piping.

2. Be careful not to form a slack of the drain hose.

3. Do not allow the piping to jut out from the back of the indoor unit.

4. Insulate both of the refrigerant pipings so that dewing and troubles
may not happen.

5. Be careful in bending the pipes. The bending radius must be
100mm or larg e r.

A.Right-hand connection with piping C.Under-side connection with pipingB.Left-hand connection with piping

1. Cut out the knock-out piece from the

rightside of the rear body with a knife,
etc. Smooth the cut edges.

2. Cut out the Holder-pipe slit part.

3. Support the above section to be bent
with your hand and bend the pipes
there.

1. Cut out the knock-out piece from the
leftside of the rear body with a knife,

etc. Smooth the cut edges.

1. Cut out the knock-out piece from the
underside of the rear body with a knife,
etc. Smooth the cut edges.

2. Cut out the Holder-pipe on its slit part.

Set the drain hose in the inner part of the
indoor unit and the assembly cable in lower part of it.
Wind tape round them.

Piping

Assembly cable

Drain hose

Tape

Piping

B

C

A

Assembly cable

Installation plate

Drain hose

3-2-2(b) Wiring connection(Indoor unit)

1. Open the Grille and remove the
screw securing the cover.

2. AS-18**: Pass the assembly cable
through the rear of the indoor
unit and connect the assembly
cable to terminals 1~3.
*Each wire is labelled with the
corresponding terminal number.
AS-24**: Firmly connet the cable
connector with connector.(6pin,
4-cable)

3. Assembly every parts by contrary
order to disassembly.

Screw

Indoor
unit

Conneitor

AS-18**

AS-24**

Outdoor
unit

Operating Instructions and Installation

3-8

Samsung Electronics

AUXILIARY POWER S/W WIRING CONNECTION

A u x i l i a ry power S/W should be installed
near indoor unit so that each access is
p o s s i b l e .
Main/Outdoor unit power cords are
connected to upper/lower terminal of
a u x i l i a ry power S/W.

Indoor unit connector wire should be
connected to both indoor unit connector
( t e rminal board) and outdoor unit term i n a l
b o a rd as shown in the figure below.

distributind
board

Auxiliary

power S/W

EARTH WIRE

EARTH WIRE

EARTH WIRE

AS-18**

AS-24**

(POWER CABLE)

(ASSEMBLY CABLE)

EARTH WIRE

<Indoor unit> <Outdoor unit>

(POWER CABLE)

(ASSEMBLY CABLE)

<Indoor unit>

<Outdoor unit>

3-2-2(e) Wiring connection(outdoor unit)

3-2-2(d) Indoor unit installation

1. Pass the pipes
t h rough the
hole in the
wall and hook
the indoor
unit to the
i n s t a l l a t i o n
plate at the
upper and
lower hooks.

2. Move the indoor unit to the right and
left to make sure that the unit is
s e c u rely hooked on to the installation
p l a t e .

DRAINAGE

1. Run the drain hose sloped downward .

2. Do not install the drain hose as illustrated below.

Do not form
a rise

Do not put the
drain hose end
into water

Do not wave
the hose

Keep a distance

at least 5cm

or more

Do not put the
drain hose end
in the ditch

Ditch

3. Put water in the drain pan and make sure that the water is drained outdoor.

4. When connecting the extension drain hose, insulate the inside part of the
extension drain hose with shield.

Hook
here

Operating Instructions and Installation

3-9

Samsung Electronics

No. JOB EXPLANATION PRECAUTIONS

1 Determine the • Suitable location • Avoid sandy or gravelly soil as its grounding

grounding position. a) Place that is always dank. resistance is high.

b) Hard soil rather than loose sandy soil. • The grounding wire for the telephone line cannot

be used for the grounding of the air conditioner.

• Unsuitable location • When the grounding electrode is to be installed
a) Where there are underground structures or under a place with heavy traffic, its wire must be

facilites such as gas pipes, water pipes, connected firmly with the utmost care.
telephone lines, underground cables, etc.

b) A place 2m or less from the lightning arrester

grounding electrode and its cable.

2 Drive the grounding a) Dig a hole to the size illustrated,

electrode into position. and drive in the grounding electrode.

b) Cover the top of the grounding

electrode with excavated soil.

3 Put the grounding a) If the grounding wire is too short, connect an • The grounding wire should be a green

wire in order. extention lead to it. Solder the joint and insulated wire of ø1.6mm or 2mm2or larger.

wrap it with tape. • The soldered joint should not be buried

b) Fasten the grounding wire with staples. underground.

4 Check the a) After grounding work, measure the grounding

workmanship, resistance with a grounding resistance tester.
and provide

corrective b) If the resistance is above a specified level,
measures if drive the grounding electrode in deeper
necessary. or increase the number of grounding

electrodes.

5 Connect the Secure the grounding wire to the

grounding grounding terminal of the air conditioner
wire to the air
conditioner.

3-2-2(f) Grounding

(The Parts for this work are optional.)

• A g rounding terminal can be found on
the outdoor unit as illustrated.

1. When an existing grounding terminal is avilable.
( G rounding wire of ø1.6mm or larger<solid w i re > o r

2 m m2or larger <standard wire > )

2. Use of a grounding electro d e .

• Specifications of grounding electro d e .

Terminal used exclusively
for grounding.

Steel coreCarbon plastic

PVC-Insulated(2mm2x3.5m), green Terminal, M4

Grounding resistance ;
Less than 100 ohms
(existing grounding electrode)

Operating Instructions and Installation

3-10

Samsung Electronics

• Flare modification procedure

3-2-2(g) Flare modification

• Tools used

Tightening

knob

Cutting wheel

Clamp handle

Bar

Cone

Roller

Yoke

1) Cut the pipe using a pipe cutter.

3) Insert a flare nut into the pipe and modifty flare.

• Unproper flaring

2) Remove burrs at the tip of the pipe cut.
Caution : Burrs not removed may result

in leakage of gas.

Outer diameter A(mm)

ø6.35mm 1.3
ø12.7mm 2.0
ø15.8mm 2.2

Oblique Raughness Burr

Point
down

D

A

Inclined Surface

damaged

Cracked Uneven

thickness

Pipe

Reamer

Operating Instructions and Installation

3-11

Samsung Electronics

3-2-2(h) Air-Purge Procedure

1. Connect each assembly pipe to the appropriate valve on the
outdoor unit and tighten the flare nut.

3 Open the valve of the low pressure side of manifold gauge

counter-clockwise.

6. Mount the valve stem nuts to the 2-way and 3-way valve.

And mount the service port cap to 3-way valve.

4. Purge the air from the system using vacuum pump for about
10 minutes.

- Close the valve of the low pressure side of manifold gauge

clockwise.

- Remove the hose of the low pressure side of manifold

gauge.

7. Check for gas leakage.

- At this time, especially check for gas leakage from the
3-way valve’s stem nuts, and from the service port cap.

5. Set valve cork of both liquid side and gas side of packed
valve to the open position.

2 Connect the charging hose of low pressure side of manifold

gauge to the packed valve having a service port (3/8” or
1/2” Packed valve) as shown at the figure.

Outdoor unit

Indoor unit

Gas pipe side

Liquid pipe side

Vacuum Pump

B

(liquid)

Valve stem

Stem cap

A

(gas)