LG | S18AH-ST0 | LG S18AH ST0 Owner’s Manual

INSTALLATION INSTRUCTIONS
SINGLE SPLIT WALL MOUNTED AIR CONDITIONER
?
?
Please read this instruction sheet
When the power cord is
completely before installing the product.
damaged, replacement work shall be performed by
authorized
personnel only.
?
Installation work must be
authorized
performed
personnel only.
in accordance with the national
wiring
standards
by
Installation Parts Provided
1.
Type
"A"
screw
2. Installation Plate
3.
Type
"B"
screw
4. Holder Remote Control
Installation parts you
must
purchase
Installation
Sleeve
plate
Bushing-Sleeve
Putty(Gum Type Sealer)
Bend the
on
pipe
the wall
as
as closely
possible,
but be careful that it
doesn't break.
Air filter
Vinyl tape (Wide)
?
?
Saddle
Apply after carrying
drainage test.
out
a
To carry out the drainage
test, remove the air filters
and pour water into the heat
exchanger.
Gas side
piping
(Optional Parts)
Liquid side piping
(Optional Parts)
Additional drain pipe
Vinyl tape (Narrow)
?
?
?
This illustration is for
explanation purposes only.
The indoor unit will actually face a different way.
Copper lines must be insulated independently.
Connecting cable
(Optional Parts)
P/No.: 3828A20170A
(Split
-
Series)
ENGLISHTAOPFRCDU
INSTALLATION OVERVIEW
Installation
Required Parts
Requirements
The
Required
Tools
following should be always
safety....................3
observed for
Installation of indoor, outdoor
unit................................................4
Installation
Level gauge
Four
Screw driver
plate
type "A" screws
Connecting cable
Electric drill
Hole
Flaring work and connection of
piping ...........................................6
Connection of piping(Indoor) ......7
For right rear piping
For left rear piping
Connection of piping(Outdoor)
Pipes:
Liquid side ......1/4",
(Refer to page 4)
3/8"
Insulation materials
Additional drain
pipe
(Outer Diameter.........15.5mm)
cable between
indoor unit and outdoor unit
drill(ø70mm)
Gas side .........3/8", 1/2", 5/8", 3/4"
................................................10
Connecting the
core
Flaring tool set
Specified torque wrenches
1.8kg.m, 4.2kg.m, 5.5kg.m, 6.6kg.m
(different depending on model No.)
(Refer to page 10)
Spanner......................Half union
......
....................................................11
Checking the drainage and
Forming the piping ..................13
Air
purging
A
glass
of water
Screw driver
...............................14
Hexagonal wrench(4mm)
Gas-leak detector
Vacuum pump
Gauge
Test
running
.............................16
manifold
Owner's manual
Thermometer
Holder Remote Control
2
THE FOLLOWING SHOULD BE ALWAYS OBSERVED FOR SAFETY
Be
sure
to read "THE FOLLOWING SHOULD BE ALWAYS OBSERVED FOR SAFETY" before
installing
the air
conditioner.
Be
sure
to observe the cautions
The indications and
meanings
WARNING
here
as
they
include
:
important
items related to
safety.
follows.
Could lead to death, serious
:
CAUTION
After
specified
are as
Could lead to serious
injury,
injury
in
ENGLISH
etc.
particular
environments when
operated
incorrectly.
this instructions, be
customer's site.
reading
sure
to
it
keep
together
with the owner's manual in
a
handy place
on
the
WARNING
Do not install it
Perform the installation
yourself (customer).
Incorrect installation could cause injury due to fire,
electric shock, the unit falling or leakage of water.
Consult the dealer from whom you purchased the
unit or special installer.
Install the unit securely in
the weight of the unit's.
a
place which
When installed in an insufficiently
the unit could fall causing injury.
can
Incorrect installation could
cause a
injury due to fire, electric shock,
or leakage of water.
bear
to the
personal
falling
the unit
Perform electrical work according to the installation
manual and be sure to use a dedicated circuit.
If the capacity of the power circuit is insufficient
there is incomplete electrical work, it could
result in a fire or an electric shock.
strong place,
or
Use the specified wires to connect the indoor and
outdoor units securely and attach the wires firmly
to the terminal board connecting sections so the
stress of the wires is not applied to the sections.
Incorrect connection and attachment could
securely referring
installation instruction.
cause
Check that the refrigerant gas does not leak after
installation is completed.
fire.
Attach the electrical part cover to the indoor unit
and the service panel to the outdoor unit securely.
Be sure to use the part provided
for the installation work.
If the electrical part covers of the indoor unit
and/or 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.
or
specified parts
The use of defective parts could cause an injury
due to a fire, electric shock, the unit's falling, etc.
CAUTION
Do not install the unit in
flammable gas leaks.
a
place where
Perform the
a
drainage/piping
work
according
to the installation instruction.
If there is a defect in the drainage/piping work,
water could leak from the unit and household
goods could come wet and be damaged.
If gas leaks and accumulates in the area
the unit, it could cause an explosion.
surrounding
3
INSTALLATION OF
Read completely, then follow step
INDOOR, OUTDOOR UNIT
by step.
C Rooftop Installations:
Select the best location
A
If the outdoor unit is installed
Indoor unit
sure
Do not have any heat or steam near the unit.
a place where there are no
anchoring
Select
Make
can
sure
be
that condensation
Do not install
Piping length and elevation
doorway.
near a
Ensure that the space around the left and
right of the unit is more than "A". The unit
should be installed
possible, allowing
ceiling.
Use
a
as
high
on
the wall
as
Pipe
Capacity
(Btu/h)
minimum of "B" from
a
adequate for the unit location.
regarding rooftop mounting.
are
drainage
routed away.
conveniently
method
Consult local codes
obstacles in front of the unit.
Standard
Size
prevent
damage
to the wall.
18k~28k
30k~38k
More than 2.3m
More than "B"
Max.
Additional
GAS
LIQUID
3/8"(Ø9.52)
1/4"(Ø6.35)
4 or 7.5
7
15
20
1/2"(Ø12.7)
1/4"(Ø6.35)
4 or 7.5
7
15
20
1/2"(Ø12.7)
1/4"(Ø6.35)
4 or 7.5
15
30
20
5/8"(Ø15.88)
1/4"(Ø6.35)
4 or 7.5
15
30
20
5/8"(Ø15.88)
3/8"(Ø9.52)
4 or 7.5
15
30
30
5/8"(Ø15.88)
3/8"(Ø9.52)
7.5
15
30
30
3/4"(Ø19.05)
3/8"(Ø9.52)
7.5
15
30
50
5k~14k
More than "A"
More than "B"
Max.
Elevation
Length
(m)
stud finder to locate studs to
unnecessary
roof structure, be
on a
to level the unit. Ensure the roof structure and
B
Length Refrigerant
A (m)
(g/m)
(m)
CAUTION
Install the indoor unit
from the floors
more
the wall where the
on
height
Indoor unit
Outdoor unit
than 2.3 meters.
Clearance(cm)
Grade
AB
5K~28K
10
5
30K~38K
30
12
A
B Outdoor unit
If an awning is built over the unit to
prevent direct sunlight or rain exposure,
make
sure
A
Indoor unit
B
B
Outdoor unit
that heat radiation from the
condenser is not restricted.
Ensure that the space around the back
more than 10cm. The front of
and sides is
the unit should have
space.
Do not
path
place
of the
more
animals and
Outdoor unit
than 70cm of
plants
in the
air.
warm
Oil
Take the air conditioner
account and select
and vibration
Select
a
weight into
place where noise
minimum.
are
place
a
so
that the
A
trap
Indoor unit
warm
B
air and
noise from the air conditioner do not
disturb
neighbors.
More than 60cm
More than 10cm
More than 10cm
If
case more
than 5m
CAUTION
?
More
More than 70cm
than 60cm
?
4
Capacity
is based
allowance
length
Oil
is
on
on
standard
the basis of
trap should be installed every
length and
reliability.
5~7meters.
maximum
Drill
How to fix installation plate
The wall you select should be
enough to prevent vibration
strong
6
"A"
type
concrete
If
screws.
wall,
use
Drill the
plate on the wall with
mounting the unit on a
the
piping hole with a ø70mm hole core
piping hole at either the right or
left with the hole slightly slanted to the
drill. Drill the
the
anchor bolts.
outdoor side.
Mount the installation
aligning
hole in the wall
and solid
Mount the installation
A
a
plate horizontally by
centerline using a level.
WALL
Installation Plate
Indoor
Type
"A"
Outdoor
5-7m
screw
Measure the wall and mark the centerline. It
B
is also
important to
use
caution
concerning
plate-routing of
the location of the installation
Installation instructions of
the
wiring to power outlets is through the
walls typically. Drilling the hole through the
wall for
piping
(3/16"~5 )
telephone control(Optional)
connections must be done
safely.
Open
the Front Grille.
Pass
Telephone
Control Cord Wire
through
the hole which the power cord goes
C
Installation
D
through.
plate
rear
Cord Wire to
PCB of
A
Ø70mm
Left
Connect
the
B
Control Box.
Ø70mm
piping
Right
Distance
CHASSIS
(Grade)
rear
Telephone Control
phone jack of telephone
Fix
piping
Telephone
Control box
(mm)
Control Cord Wire inside
so as
not to disconnect.
Close the Front Grille.
ABCD
SJ
90
20
80
20
SL, SK
45
40
80
20
SQ, SW
75
12
80
12
SR
0
40
20
40
ST
105
0
210
0
Phone
Conductor
Installation
plate
Telephone Control
Cord Wire
B
D
CE
Left
rear
Right
piping
Distance
CHASSIS
(Grade)
(Packed in the box)
A
rear
piping
Adaptor
(Not packed in
the box)
Ø70mm
(mm)
ABCDE
SM
180
115
SN
180
115
-
195
115
115
Answering telephone / Normal telephone
(Not packed in the box)
50
-
5
ENGLISH
FLARING WORK AND CONNECTION OF PIPING
Main
Carry out flaring work using flaring tool
work
Flaring
Cut the
pipes and
piping
purchased locally.
kit accessory
pipes
or
Measure the distance between the indoor and
the outdoor unit.
Cut the
pipes
E
little
a
longer than
the measured
mm
Ø6.35
1/4
0~0.5
Ø9.52
3/8
0~0.5
Ø12.7
1/2
0~0.5
Ø15.88
5/8
0~1.0
Ø19.05
3/4
1.0~1.3
Check
Compare the flared
work with
figure
below.
If flare is noted to be defective, cut off the flared
distance.
Cut the cable 1.5m
A
inch
mm
the cable.
Use the
shown below.
Outside diameter
for refrigerant leakage is due to defect
flaring work. Carry out correct flaring work
using the following procedure.
cause
in the
A
as
section and re-flare it.
longer than the pipe length.
Smooth all round
Copper
pipe
Inside is
Slanted
90°
Uneven
Rough
shiny
=
B
Inclined
Burr removal
Completely
cross
remove
section of
all burrs from the cut
Even length
all round
without scratches
Improper flaring
Surface
damaged
=
Cracked Uneven
thickness
pipe/tube.
Put the end of the copper tube/pipe in a
downward direction as you remove burrs in
order to avoid
dropping
burrs into the
tubing.
Connection of piping
Pipe
Reamer
Preparing
the indoor unit's
--
piping
Indoor
and drain
hose for installation
through the wall.
Remove the plastic tubing retainer(see
illustration below) and pull the tubing and
Point down
drain hose away from chassis.
Replace the plastic tubing holder in the
C Putting nut on
Remove flare nuts attached to indoor and
outdoor unit, then
put them
on
original position.(Optional)
pipe/tube
having completed burr removal.
(not possible to put them on after flaring work)
Flare nut
Copper
tube
Tubing
D Flaring
work
Firmly hold copper pipe in a die in the
dimension shown in the table above.
Handle
Bar
"A"
CAUTION
Bar
Yoke
When install, make sure
that the remaining parts
must be removed clearly
so as not to damage the
piping and drain hose,
especially power cord
and connecting cable.
Cone
Copper pipe
Clamp
handle
Red
arrow
mark
6
holder
E Connecting
For right rear piping
A
Route the indoor
the direction
the
pipings to
pipe.
the indoor unit and
drain hose to drain
tubing and
of rear right.
Align the center of the pipes
tighten the flare nut by hand.
the drain hose in
Indoor unit
Flare nut
tubing
the flare nut with
Tighten
a
and
sufficiently
ENGLISH
Pipes
wrench.
Open-end
wrench
(fixed)
Drain hose
B
Insert the
connecting cable into the indoor unit
through the piping hole.
Flare nut
from the outdoor unit
Wrench
Do not connect the cable to the indoor unit.
Make
small
a
loop
with the cable for easy
Indoor unit
connection later.
C Tape
the
tubing,
Connection
tubing
Outside diameter
drain
hose, and the connecting
pipe
Torque
mm
inch
cable. Be sure that the drain hose is located at
Ø6.35
1/4
1.8
the lowest side of the bundle.
Ø9.52
3/8
4.2
upper side
can cause
Locating
at the
drain pan to overflow
inside the unit.
12
Ø12.7
1/2
5.5
Ø15.88
5/8
6.6
Ø19.05
3/4
When
install
Loop
kg.m
extending the drain
the drain pipe.
Drain
6.6
hose at the indoor unit,
pipe
Gas side
Connecting
cable
piping
Drain hose
Liquid
piping
Indoor unit drain hose
side
Adhesive
Vinyl tape(narrow)
NOTE: If the drain hose is routed inside the room,
insulate the hose with
dripping
from
furniture
or
an
so
will not
F Wrap the insulation material around the
connecting portion.
Overlap the connection pipe insulation material and
the indoor unit pipe insulation material. Bind them
together with vinyl tape so that there is no gap.
that
damage
floors.
*Foamed polyethylene
D
insulation material*
"sweating"(condensation)
or
equivalent
is recommended.
Indoor unit installation
Plastic bands
Insulation material
Hook the indoor unit onto the upper portion of the
installation plate.(Engage the two hooks of the
rear
top
of the indoor unit with the upper edge of
plate.) Ensure that the hooks are
the installation
properly
moving it
seated
left and
on
the installation
plate by
right.
Wrap the area which accommodates
housing section with vinyl tape.
the
pipe
cable
Vinyl tape
(wide)
Connecting
Drain hose
right sides of the unit
against the installation plate until the hooks engage
into their slots(clicking sound).
Wrap
with
vinyl tape
cable
Press the lower left and
7
piping
Indoor
unit pipe
Connection
Connecting
rear
Pipe
Vinyl tape(narrow)
Bundle the piping and drain hose together by
wrapping them with vinyl tape for enough to cover
where they fit into the rear piping housing section.
Wrap
with
pipings to the indoor unit and
pipe.
Align the center of the pipes and sufficiently
tighten the flare nut by hand.
F Connecting
the
the drain hose to drain
vinyl tape
Pipe
Vinyl tape(wide)
Indoor unit
Drain hose
For left
A
rear
piping
Route the indoor
required piping
Tighten
tubing
Flare nut
the flare nut with
a
Pipes
wrench.
and the drain hose to the
tubing
position.
hole
Open-end
wrench
(fixed)
Flare nut
Wrench
Indoor unit
B
Insert the
piping, drain hose,
piping hole.
and the
Drain
Insert the
connecting cable
pipe
into the indoor unit.
Make
a
small
loop
Ø6.35
1/4
1.8
Ø9.52
3/8
4.2
Ø12.7
1/2
5.5
Ø15.88
5/8
6.6
Ø19.05
3/4
6.6
When
Don't connect the cable to the indoor unit.
Torque
kg.m
inch
mm
cable
pipe
tubing
Outside diameter
connecting
cable into the
Connecting
C
Connection
extending the drain
pipe.
hose at the indoor unit,
install the drain
with the cable for easy connection
later.
D Tape the drain hose and
Connecting cable
the
connecting cable.
Drain hose
?
Indoor unit drain hose
Adhesive
E
Vinyl tape (narrow)
Indoor unit installation
Hang
the indoor unit from the hooks at the
the installation
top
of
G Wrap
plate.
the insulation material around the
connecting portion.
Overlap the connection pipe heat insulation and the
indoor unit pipe heat insulation material. Bind them
together with vinyl tape so that there is no gap.
Insert the spacer etc. between the indoor unit and
the installation plate and separate the bottom of
the indoor unit from the wall.
Plastic bands
Indoor unit
Spacer
Installation
plate
8cm
8
Insulation material
Wrap the area which accommodates
piping housing section with vinyl tape.
the
rear
Indoor unit installation
J
Remove the spacer.
Ensure that the hooks
Indoor
unit piping
Connection
pipe
Vinyl tape
(wide)
installation
seated
properly
are
plate by moving
it left and
on
the
right.
Wrap with vinyl tape
Connecting
Pipe
cable
Vinyl tape(narrow)
Connecting
cable
Drain hose
Press the lower left and
right sides of the unit against
plate until the hooks engage into their
slots(clicking sound).
the installation
Bundle the
wrapping
piping
and drain hose
them with cloth
within which
they
tape
fit into the
rear
together by
over
CAUTION
the range
Installation Information
piping housing
?
section.
Good
For left
Pipe
Drain hose
(For left piping)
case
Press
piping.
on
Vinyl tape(narrow)
Follow the instruction below.
the upper side of
clamp. (
)
Wrap with
vinyl tape(wide)
H
Reroute the
pipings and the
drain hose
across
Unfold the
tubing
to downward
slowly. (
the back of the chassis.
Piping
for
passage through
piping hole
I
Set the
pipings and
the drain hose to the back of
Bend the
the chassis with the
Hook the
edge
and push the
engaged at the
tubing holder.
tubing holder to tap on chassis
bottom of tubing holder to be
of
bottom of chassis.
Tubing
holder
9
tubing
to the left side of chassis.
)
ENGLISH
Connection of the
CAUTION
?
Bad
pipes-Outdoor
case
Following bending type from right to
cause problem of pipe damage.
left could
the center of the pipings and
A Align
sufficiently tighten the flare nut by hand.
B Finally, tighten
the flare nut with
torque
wrench until the wrench clicks.
When
tightening
wrench,
ensure
follows the
the flare nut with
the direction for
arrow on
torque
tightening
the wrench.
Outside diameter
Torque
mm
inch
Ø6.35
1/4
1.8
Ø9.52
3/8
4.2
kg.m
Ø12.7
1/2
5.5
Ø15.88
5/8
6.6
Ø19.05
3/4
6.6
Outdoor unit
Gas side
piping
(Bigger diameter)
Liquid side
piping
(Smaller
diameter)
Torque
10
wrench
CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT
Connect the cable to the Indoor unit.
Connect the cable to the indoor unit
individually according
unit and the terminal No.
by connecting
the wires to the terminals
to the outdoor unit connection.
are
the
same as
those of the
(Ensure
indoor unit.)
on
the control board
that the color of the wires of the outdoor
The earth wire should be
longer than the common wires.
The above circuit diagram is subject to change without notice.
When installing, refer to the circuit diagram on the control box inside
?
When
installing,
refer to the circuit
diagram
on
the
wiring diagram
on
the
CAUTION
The power cord connected to the "A" unit should be
complied with the following specifications
Control Box of Indoor Unit.
?
When
installing,
refer to the
Indoor Uint.
(Type
Control Cover Inside Outdoor Unit.
"B"
approved by
HAR
SAA).
or
CAUTION
?
The above circuit
diagram
is
subject
to
change
without notice.
?
Be
(mm2)
to connect wires
sure
to the
wiring
that not to be
pulled
according
Grade
diagram.
?
out
?
NORMAL CROSS
Connect the wires
firmly,
so
-SECTIONAL AREA
5k~9k 12k~14K
18k
24k~28k
0.75
1.0
1.5
2.5
Indoor
Indoor
Indoor
Indoor
easily.
Connect the wires
referring
the
according
wiring diagram.
to color codes
by
Unit(A)
Cable
30k, 32k 36k, 38k
2.5
5.5
Outdoor Outdoor
H05VV-F H05VV-F H05VV-F H05VV-F H05RN-F H05RN-F
Type(B)
The power connecting cable connected to the indoor
and outdoor unit should be complied with the following
CAUTION
If
specifications
(Type "B" approved by
power plug is not to be used, provide a circuit breaker
between power source and the unit as shown below.
HAR
or
SAA).
a
Main power
source
NORMAL
CROSS-SECTIONAL
Air
Conditioner
(mm2)
Circuit Breaker
Use a circuit
breaker or time
NORMAL
fuse.
-SECTIONAL
delay
CROSS
Grade
5k~14k
18k
1.0
1.5
2.5
H07RN-F
H07RN-F
AREA
Cable Type(B) H07RN-F
24k~28k
(mm2)
Grade
NORMAL CROSS
-SECTIONAL AREA
Cable Type(B)
11
30k, 32k
36k, 38k
0.75
0.75
H07RN-F
H07RN-F
AREA 0.75mm2
ENGLISH
Connect the cable to the
Outdoor Unit
outdoor unit
Remove the control
A
loosening
the
cover
from the unit
Terminal block
by
screw.
Connect the wires to the terminals
control board
the
on
Over 5mm
individually.
Secure the cable onto the control board with
B
the cord
clamp.
Refix the control
C
position
Use
D
a
with the
cover
to the
original
screw.
Connecting
cable
Connecting
cable
recognized circuit breaker "A"
Cover control
between the power source and the unit.
A disconnecting device to adequately
disconnect all
supply lines
must be fitted.
Grade
Circuit
Breaker
5k~14k
18k
(A)
15
20
24k~28k30k, 32k
30
36k, 38k
30
40
CAUTION
After the confirmation of the above conditions, prepare the
1)
wiring
as
follows:
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 come
loose from vibrations to which the unit is subjected during the course of
transportation. Check them and make sure that they are all 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 to 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 specified in the power source specification.
(Particularly note the relation between cable length and thickness. (Refer to page 11))
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
wiring
for disconnection from
and have
an
air gap contact
power supply shall be incorporated in the fixed
separation of at least 3mm in each active(phase)
a
conductors.
12
CHECKING THE DRAINAGE AND FORMING THE PIPINGS
Checking
A
To
remove
the
Form the
drainage
the front panel from the indoor
A
unit.
piping
Form the
piping by wrapping the
connecting portion of the indoor
insulation material and
Set the air direction louvers
up-and-down
to the position(horizontally) by hand.
Remove the securing screws that retain the
front panel. Pull the lower left and right
sides of the grille toward you and lift it off.
kinds of
secure
unit with
it with two
vinyl tapes.
If you want to connect an additional drain
hose, the end of the drain outlet should be
routed above the
hose
B
In
Secure the drain
ground.
appropriately.
cases
where the outdoor unit is
installed below the indoor unit perform
the
Pull the
right
following.
Tape the piping, drain hose and
connecting cable from down to up.
Secure the tapped piping along the
wall using saddle or equivalent.
and
the left side.
B
To check the
exterior
Seal small
drainage.
around
openings
pipings with a
gum type sealer.
Pour
a
glass
of water
the
evaporator.
through the drain
without any leakage
on
Ensure the water flows
hose of the indoor unit
Taping
Drain
hose
and goes out the drain exit.
Pipings
Connecting
cable
Trap
from
C
In
cases
is required to prevent water
entering into electrical parts.
where the Outdoor unit is
installed above the Indoor unit perform
the
following.
Tape the piping
C
Drain
and
down to up.
Secure the taped
piping
The drain hose should
point
downward for
wall. Form
the
easy drain flow.
slope
trap
cable from
piping along the exterior
prevent water entering
to
room.
Fix the
Downward
a
connecting
piping
equivalent.
onto the wall
by
saddle
Seal a small opening
around the pipings
with gum
Do not make drain
type
Trap
piping.
Accumulated
Do not raise
drain water
Tip of drain hose
dipped in water
Air
Water
Water
leakage
leakage
Waving
Less than
50mm gap
Water
leakage
Trap
Ditch
13
sealer.
or
ENGLISH
AIR PURGING
Do
Air purging
a
leak test of all
indoor and
Air and moisture
remaining
in the
system have undesirable effects
of the
tubing(both
liquid
and both gas and
refrigerant
as
Bubbles indicate
indicated
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, the indoor unit and tubing between
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
disconnect the hose from the cylinder.
to
normal,
Indoor unit
the indoor and outdoor unit must be leak tested
and evacuated to
remove
and moisture from the
any noncondensables
system.
Air purging with
vacuum
pump
Outdoor unit
A Preparation
Check that each
side
tubes)
tube(both liquid
and gas
between the indoor and
outdoor units have been
properly
wiring for the test run
has been completed. Remove the service
valve caps from both the gas and the liquid
connected and all
side
on
the outdoor unit. Note that both the
and the gas side service valves on
the outdoor unit are kept closed at this
liquid
Manifold valve
stage.
B
Pressure
gauge
Leak test
Lo
Hi
Connect the manifold
gauges)
valve(with pressure
dry nitrogen gas cylinder to
port with charge hoses.
and
this service
CAUTION
Be
sure
purging.
to
use a
Charge
hose
manifold valve for air
If it is not available,
use a
stop
valve
for this purpose. The "Hi" knob of the manifold
valve must always be kept close.
Pressurize the
system to no more than 150
dry nitrogen gas and close the
cylinder valve when the gauge reading
P.S.I.G. with
reached 150 P.S.I.G. Next, test for leaks with
liquid
side
service valves.
below.
Pressure in the
joints
outdoor)
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.
14
Nitrogen gas
cylinder(in vertical
standing position)
Soap water method
(1) Remove the caps from
the
Gas side
2-way and 3-way
valves.
(2)
Remove the
service-port
cap from the 3-way
valve.
(3)
To open the 2-way valve turn the valve stem
counterclockwise approximately 90°, wait for
Liquid
about 2~3sec, and close it.
(4)
2-way valve
(Open)
connections
(5)
by a soft brush to check for
connecting points of the piping.
come out, the pipes have leakage.
of the
leakage
If bubbles
side
3-way valve
(Close)
Apply soap water or a liquid neutral detergent
on the indoor unit connection or outdoor unit
a
Cap
C
Evacuation
Hexagonal
Connect the
charge hose end described
preceding steps to the vacuum pump to
evacuate the tubing and indoor unit.
wrench
in the
Indoor unit
Confirm the "Lo" knob of the manifold valve 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.
Required
If
time for evacuation when 30
vacuum pump is used
tubing length is less
than 10m (33 ft)
10 min.
or more
When the desired
if
gal/h
tubing length is longer
than 10m (33 ft)
15 min.
vacuum
Outdoor unit
or more
is reached, close the
stop the
"Lo" knob of the manifold valve and
vacuum
pump.
D Finishing
the job
With
of
a
service valve wrench, turn the valve stem
side valve counter-clockwise to fully
liquid
Manifold valve
open the valve.
Turn the valve stem of gas side valve
counter-clockwise to fully open the valve.
Pressure
service
remove
Lo
Hi
gauge
Loosen the
charge hose connected to the gas side
port slightly to release the pressure, then
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.
Replace the valve caps at both gas and liquid side
service valves and fasten them tight.
This completes air purging with a vacuum pump.
The air conditioner is now ready to test run.
Open
Vacuum pump
15
Close
ENGLISH
TEST RUNNING
1. Check that all
2.
tubing and wiring have been
properly connected.
Check that the gas and liquid side service valves
are fully open.
A Prepare remote
3. Ensure the difference between the intake
temperature
discharge is more than 8°C(46°F) (Cooling) or
(Heating).
and the
control
Intake temperature
Discharge
Remove the
by pulling
sure
battery cover
according to the
direction.
arrow
Insert
it
new
batteries
that the
battery
are
pushing
(+)
and
installed
Reattach the
cover
making
(--) of
correctly.
Discharge
temperature
by
position.
4. For reference; the gas side pressure of optimum
it back into
condition is
NOTE:
?
system is not going
to be used for a
long
R-22
35°C
(95°F)
4~5kg/cm2G(56.8~71.0P.S.I.G.)
R-410A
35°C
(95°F)
8.5~9.5kg/cm2G(120~135
P.S.I.G.)
should be removed. If the actual pressure are
lower than shown, the system is most likely
Settlement of outdoor unit
Anchor the outdoor unit with
undercharged,
In the
case
a
anti-vibration
hose,
secure
the unit with
charge should be
ready for use.
added.
now
PUMP DOWN
This is
performed when the unit is to be
or the refrigerant circuit is serviced.
Pump Down means collecting all refrigerant in the
outdoor unit without loss in refrigerant gas.
relocated
when the vibration of the unit is
to the
and
The air conditioner is
bolt and
nut(ø10mm)
tightly and horizontally on a concrete or rigid mount.
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.
conveyed
The pressure of the gas side
service valve.
TEMP.
NOTE: If the actual pressure is higher than shown, the
system is most likely over-charged, and charge
time.
B
below.(Cooling)
use
Remove the batteries from the remote control if
the
as
Outside ambient
Refrigerant
Use 2 AAA(1.5volt) batteries. Do not
rechargeable batteries.
?
air
an
bushing.
CAUTION:
Be sure to perform
unit cooling mode.
Pump
Down
procedure
with the
Bolt
Pump
Down Procedure
1. Connect
2.
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 from the manifold hose using the refrigerant
gas.
3. Close the
Tubing
C
Evaluation of the
4. Turn
connection
liquid
side service
the unit's
operating
valve(all the way in).
switch and start the
cooling operation.
low-pressure gauge reading becomes 1
0.5kg/cm2 G(14.2 to 7.1 P.S.I.G.), fully close the
side
valve
stem and then quickly turn off the
gas
unit. At that time, Pump Down has been completed
and all refrigerant gas will have been collected in
5. When the
performance
Operate unit for 15~20minutes, then
system refrigerant charge:
on
to
check the
1. Measure the pressure of the gas side service
valve.
the outdoor unit.
2. Measure the
temperature of the intake and
discharge of air.
16
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