Perfect Aire 3PAMSCH12 User manual
MULTI-ZONE
FOUR-WAY CASSETTE
OWNER’S MANUAL
Image shown is the 3PAMSCH12, 3PAMSCH18
MODELS: 3PAMSCH12, 3PAMSCH18, 3PAMSCH24
32
TABLE OF CONTENTS
IMPORTANT NOTE:
Read this manual and SAFETY MANUAL(if any) carefully before installing or operating your new air
conditioning unit. Make sure to save this manual for future reference.
Please check the applicable models, technical data, F-GAS (if any) and manufacturer information from the
“Owner’s Manual - Product Fiche” in the packaging of the outdoor unit (European Union products only) or in
the packaging of the indoor unit (model dependent)
PACKING AND UNPACKING THE UNIT ........................................................................................... 5
SAFETY PRECAUTIONS .................................................................................................................... 6
BEST INSTALLATION PRACTICES.......................................................................................................................................... 9
UNIT SPECIFICATIONS AND FEATURES .....................................................................................10
INDOOR UNIT DISPLAY ............................................................................................................................................................10
OPERATING TEMPERATURE ..................................................................................................................................................11
OTHER FEATURES......................................................................................................................................................................12
CARE AND MAINTENANCE .............................................................................................................13
CLEANING YOUR INDOOR UNIT ...........................................................................................................................................13
CLEANING YOUR AIR FILTER..................................................................................................................................................13
............................................................................................................14
.................................................................................................................14
TROUBLESHOOTING........................................................................................................................15
COMMON ISSUES......................................................................................................................................................................15
TROUBLESHOOTING ................................................................................................................................................................16
ACCESSORIES ...................................................................................................................................18
INSTALLATION SUMMARY ............................................................................................................19
UNIT PARTS ........................................................................................................................................20
3PAMSCH12 & 3PAMSCH18..................................................................................................................................................20
3PAMSCH24.................................................................................................................................................................................21
INDOOR UNIT INSTALLATION .......................................................................................................22
STEP 1: SELECT INSTALLATION LOCATION................................................................................................................................................... 22
STEP 2: HANG INDOOR UNIT .................................................................................................................................................................................. 23
STEP 3: DRILL WALL HOLE FOR CONNECTIVE PIPING ............................................................................................................................. 25
STEP 4: CONNECT DRAIN HOSE ........................................................................................................................................................................... 25
OUTDOOR UNIT INSTALLATION ...................................................................................................28
STEP 1: SELECT INSTALLATION LOCATION................................................................................................................................................... 28
STEP 2: INSTALL DRAIN JOINT ............................................................................................................................................................................. 29
STEP 3: ANCHOR OUTDOOR UNIT....................................................................................................................................................................... 29
REFRIGERANT PIPING CONNECTION .........................................................................................31
NOTE ON PIPE LENGTH ...........................................................................................................................................................31
............................................................................................32
STEP 1: CUT PIPES ....................................................................................................................................................................................................... 32
STEP 2: REMOVE BURRS ........................................................................................................................................................................................... 32
STEP 3: FLARE PIPE ENDS........................................................................................................................................................................................ 32
STEP 4: CONNECT PIPES .......................................................................................................................................................................................... 33
INSTALLATION MANUAL
OWNER’S MANUAL
4 5
SAFETY & PRECAUTIONS
TABLE OF CONTENTS (Continued)
WIRING .................................................................................................................................................35
OUTDOOR UNIT WIRING..........................................................................................................................................................36
CHOOSE THE RIGHT CABLE SIZE........................................................................................................................................36
INDOOR UNIT WIRING ..............................................................................................................................................................36
AIR EVACUATION ..............................................................................................................................38
PREPARATIONS AND PRECAUTIONS.................................................................................................................................38
EVACUATION INSTRUCTIONS ...............................................................................................................................................38
NOTE ON ADDING REFRIGERANT........................................................................................................................................39
PANEL INSTALLATION .....................................................................................................................40
3PAMSCH12 & 3PAMSCH18..................................................................................................................................................40
STEP 1: REMOVE THE FRONT GRILLE ................................................................................................................................................................ 40
STEP 2: INSTALL THE PANEL .................................................................................................................................................................................. 40
STEP 3: MOUNT THE INTAKE GRILLE ................................................................................................................................................................. 40
STEP 4: CONNECT WIRES......................................................................................................................................................................................... 40
STEP 5: FASTEN CONTROL BOX LID ................................................................................................................................................................... 40
STEP 6: CLOSE INTAKE GRILLE ............................................................................................................................................................................. 40
3PAMSCH24.................................................................................................................................................................................41
STEP 1: REMOVE THE FRONT GRILLE ................................................................................................................................................................ 41
STEP 2: REMOVE INSTALLATION COVERS...................................................................................................................................................... 41
STEP 3: INSTALL THE PANEL .................................................................................................................................................................................. 41
STEP 4: HANG THE INTAKE GRILLE..................................................................................................................................................................... 42
STEP 5: RE-INSTALLED INTO STYLE GRID ...................................................................................................................................................... 42
TEST RUN ............................................................................................................................................43
BEFORE TEST RUN ....................................................................................................................................................................43
TEST RUN INSTRUCTIONS .....................................................................................................................................................43
INSTALLATION MANUAL CONTINUED
PACKING AND UNPACKING THE UNIT
INSTRUCTIONS FOR PACKING AND UNPACKING THE UNIT:
UNPACKING:
Indoor unit:
Cut the packing belt.
Unpack the package.
Take out the packing cushion and packing
support.
Take out the accessories.
Outdoor Unit:
Cut the packing belt.
Take the unit out of the carton.
Remove the foam from the unit.
Remove the packaging bag from the unit.
PACKING:
Indoor unit:
Put the accessories in.
Place the packing cushion and packing
support.
Put the indoor unit into the package.
Close the package and seal it.
Using the packing belt if necessary.
Outdoor unit:
Put the bottom foam into the box.
Put the outdoor unit into the package, then
put the upper packaging foam on the unit.
Close the package and seal it.
Using the packing belt if necessary.
NOTE: Please keep all packaging items if you
may need in the future.
6 7
SAFETY & PRECAUTIONS SAFETY PRECAUTIONS (Continued)
CAUTION
•
the power if you are not going to use it for a
long time.
•
• Make sure that water condensation can drain
unhindered from the unit.
• Do not operate the air conditioner with wet
hands. This may cause electric shock.
• Do not use device for any other purpose than
its intended use.
• Do not climb onto or place objects on top of
the outdoor unit.
• Do not allow the air conditioner to operate for
long periods of time with doors or windows
open, or if the humidity is very high.
ELECTRICAL WARNINGS
•
cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly
• Keep power plug clean. Remove any dust or
grime that accumulates on or around the plug.
• Do not pull power cord to unplug unit. Hold the
directly on the cord can damage it, which can
• Do not modify the length of the power supply
cord or use an extension cord to power the
unit.
• Do not share the electrical outlet with other
• The product must be properly grounded at
the time of installation, or electrical shock
may occur.
• For all electrical work, follow all local and
national wiring standards, regulations, and the
Installation Manual. Connect cables tightly,
and clamp them securely to prevent external
forces from damaging the terminal. Improper
electrical connections can overheat and cause
connections must be made according to the
Electrical Connection Diagram located on the
panels of the indoor and outdoor units.
• All wiring must be properly arranged to
ensure that the control board cover can close
properly. If the control board cover is not
closed properly, it can lead to corrosion and
cause the connection points on the terminal to
•
disconnection device which has at least 3mm
clearances in all poles, and have a leakage
current that may exceed 10mA, the residual
current device (RCD) having a rated residual
operating current not exceeding 30mA, and
disconnection must be incorporated in the
CLEANING AND
MAINTENANCE WARNINGS
•
before cleaning. Failure to do so can cause
electrical shock.
• Do not clean the air conditioner with excessive
amounts of water.
• Do not clean the air conditioner with
combustible cleaning agents. Combustible
TAKE NOTE OF FUSE SPECIFICATIONS
The air conditioner’s circuit board (PCB) is designed
with a fuse to provide over current protection.
circuit board, such as :
T3.15AL/250VAC, T5AL/250VAC, T3.15A/250VAC,
T5A/250VAC, T20A/250VAC, T30A/250VAC, etc.
SAFETY PRECAUTIONS
WARNING
This symbol indicates the possibility
of personnel injury or loss of life.
CAUTION
This symbol indicates the possibility of
property damage or serious consequences.
WARNING
This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience
and knowledge, unless they have been given
supervision or instruction concerning use of the
appliance by a person responsible for their safety.
Children should be supervised to ensure that they
do not play with the appliance.
PRODUCT USE WARNINGS
• If an abnormal situation arises (like a burning
disconnect the power. Call your dealer
or injury.
• Do not
objects into the air inlet or outlet. This may
cause injury, since the fan may be rotating
at high speeds.
• Do not
spray, lacquer or paint near the unit. This may
• Do not operate the air conditioner in places
near or around combustible gases. Emitted
gas may collect around the unit and cause
explosion.
• Do not operate your air conditioner in a wet
room such as a bathroom or laundry room. Too
much exposure to water can cause electrical
components to short circuit.
• Do not expose your body directly to cool air
for a prolonged period of time.
• Do not allow children to play with the air
conditioner. Children must be supervised
around the unit at all times.
• If the air conditioner is used together with
burners or other heating devices, thoroughly
• In certain functional environments, such
as kitchens, server rooms, etc., the use of
specially designed air-conditioning units is
highly recommended.
Read Safety Precautions Before Operation and Installation
Incorrect installation due to ignoring instructions can cause serious damage or injury.
WARNING or CAUTION.
8 9
SAFETY & PRECAUTIONS
BEST INSTALLATION PRACTICES
• A SURGE PROTECTOR IS HIGHLY RECOMMENDED TO PREVENT DAMAGE TO THE EQUIPMENT DUE
TO ELECTRICAL FAILURE
• VERIFY THE WALL IS PLUMB. AN UNPLUMB WALL WILL CAUSE BLOWER WHEEL TO BE
UNBALANCED
• NEVER USE WIRE NUTS ON THE COMMUNICATION CABLE. CRIMP
TYPE CONNECTORS ARE ALLOWED
• WIRING BETWEEN INDOOR AND OUTDOOR UNITS IS POLARITY SENSITIVE.(EXAMPLE: IF INDOOR
UNIT IS WIRED BLACK ON 1, RED ON 2 AND WHITE ON 3, IT NEEDS TO BE THE SAME ON THE
OUTDOOR UNIT)
•
A MINIMUM OF 16 AWG, STRANDED 4 WIRE, FT4 RATED, 300 VOLTS WIRE IS NEEDED
• BE SURE TO MAKE ALL FLARES WITH AN APPROVED 410A FLARING TOOL
•
A MINIMUM OF 10 FT. LINE SET IS REQUIRED
• ON SINGLE-ZONE: IF LINE SET IS LONGER THAN 25 FT. YOU WILL NEED TO WEIGH IN THE
RECOMMENDED AMOUNT OF REFRIGERANT. SEE INSTALLATION AND OPERATION MANUAL
• ON MULTI-ZONE: THERE IS ENOUGH REFRIGERANT FOR 25 FT. OF LINE SET PER ZONE (EXAMPLE:
3-ZONE = 75 FT.
OF LINE SET)
• USE OIL OR NYLOG ON THE THREADS AND TORQUE NUTS TO THE PROPER SPECIFIED VALUE.
SEE INSTALLATION AND OPERATION MANUAL
• ALWAYS USE THE SUCTION/GAS LINE TO ADD OR REMOVE REFRIGERANT
• TEST FOR LEAKS BY PRESSURIZING THE SYSTEM WITH MINIMUM 500 POUNDS OF NITROGEN
AND HOLD FOR AT LEAST 60 MINUTES
• EVACUATE THE SYSTEM DOWN TO A MINIMUM OF 500 MICRONS AND HOLD FOR 30 MINUTES
SAFETY PRECAUTIONS (Continued)
SAFETY PRECAUTIONS (Continued)
PRODUCT INSTALLATION WARNINGS
Installation must be performed by an
installation can cause water leakage,
Installation must be performed according
to the installation instructions. Improper
installation can cause water leakage,
America,installation must be performed in
accordance with the requirement of NEC and
for repair or maintenance of this unit. This
appliance shall be installed in accordance
with national wiring regulations.
Only use the included accessories, parts,
non-standard parts can cause water leakage,
to fail.
support the unit’s weight. If the chosen
location cannot support the unit’s weight,
or the installation is not done properly, the
unit may drop and cause serious injury and
damage.
Install drainage piping according to the
instructions in this manual. Improper drainage
may cause water damage to your home and
property.
For units that have an auxiliary electric heater,
do not install the unit within 1 meter (3 feet)
of any combustible materials
Do not install the unit in a location that may
be exposed to combustible gas leaks. If
combustible gas accumulates around the
NOTE ABOUT FLUORINATED GASES
on the type of gas and the amount, please
refer to the relevant label on the unit itself
or the “Owner’s Manual - Product Fiche ” in
the packaging of the outdoor unit. (European
Union products only).
Installation, service, maintenance and repair
technician.
Product uninstallation and recycling must be
greenhouse gases in quantities of 5 tonnes
of CO2 equivalent or more, but of less than
50 tonnes of CO2 equivalent, If the system has
a leak- detection system installed, it must be
checked for leaks at least every 24 months.
When the unit is checked for leaks, proper
record-keeping of all checks is strongly
recommended.
Do not turn on the power until all work has
been completed.
When moving or relocating the air
conditioner, consult experienced service
technicians for disconnection and re-
installation of the unit.
How to install the appliance to its support,
please read the information for details in
“indoor unit installation” and “outdoor unit
installation” sections.
10 11
SAFETY & PRECAUTIONS
OPERATING TEMPERATURE
When your air conditioner is used outside of the following temperature ranges, certain safety protection
features may activate and cause the unit to disable.
INVERTER SPLIT TYPE
UNIT SPECIFICATIONS AND FEATURES (Continued)
COOL mode HEAT mode DRY mode
Room Temperature 60°F - 90°F
(16°C - 32°C)
32°F - 86°F
(0°C - 30°C)
50°F - 90°F
(10°C - 32°C)
Outdoor Temperature
32°F - 122°F
(0°C - 50°C)
5°F - 75°F
(-15°C - 24°C)
32°F - 122°F
(0°C - 50°C)
5°F - 122°F
(-15°C - 50°C)
(For models with
low-temp cooling systems.)
NOTE:
To further optimize the performance of your unit, do the following:
• Keep doors and windows closed.
• Limit energy usage by using TIMER ON and TIMER OFF functions.
• Do not block air inlets or outlets.
•
UNIT SPECIFICATIONS AND FEATURES
INDOOR UNIT DISPLAY
NOTE:
panels and display windows. Not all the display
codes describing below are available for the air
conditioner you purchased. Please check the
indoor display window of the unit you purchased.
Illustrations in this manual are for explanatory
purposes. The actual shape of your indoor unit may
This display panel on the indoor unit can be used
to operate the unit in case the remote control has
been misplaced or is out of batteries.
Operation indicator:
Timer indicator:
PRE-DEF indicator:
(pre-heating/defrost)
Alarm indicator:
Infrared
receiver
Timer
indicator
Alarm
indicator
PRE-DEF
(pre-heating/defrost)
indicator
Manual
button
Operation
indicator
LED
display
Air inlet
Air outlet
Louver
Display panel Operation indicator
Electric heating indicator
( not available)
Timer
indicator PRE-DEF indicator
(pre-heating/defrost)
Alarm indicator
When wireless control
feature is activated
(not available)
LED display
3PAMSCH12 & 3PAMSCH18
3PAMSCH24
Air inlet
Air outlet
Louver
Display panel
MANUAL button: This button selects the mode in
the following order: AUTO, FORCED COOL, OFF.
FORCED COOL mode: In FORCED COOL mode, the
Operation light ashes. The system will then turn
to AUTO after it has cooled with a high wind speed
for 30 minutes. The remote control will be disabled
during this operation.
OFF mode: When the display panel is turned o, the
unit turns o and the remote control is re-enabled
12 13
SAFETY & PRECAUTIONS CARE AND MAINTENANCE
CLEANING YOUR INDOOR UNIT
BEFORE CLEANING
OR MAINTENANCE
ALWAYS TURN OFF YOUR AIR CONDITIONER
SYSTEM AND DISCONNECT ITS POWER SUPPLY
BEFORE CLEANING OR MAINTENANCE.
CAUTION
Only use a soft, dry cloth to wipe the unit clean.
If the unit is especially dirty, you can use a cloth
soaked in warm water to wipe it clean.
• Do not use chemicals or chemically treated
cloths to clean the unit.
• Do not
powder or other solvents to clean the unit.
They can cause the plastic surface to crack
or deform.
• Do not use water hotter than 104°F (40°C) to
clean the front panel. This can cause the panel
to deform or become discolored.
CLEANING YOUR AIR FILTER
A clogged air conditioner can reduce the cooling
every two weeks.
WARNING: DO NOT REMOVE OR
CLEAN THE FILTER BY YOURSELF
Removal and maintenance must be performed by
or washing it in warm water with mild
detergent.
sunlight.
CAUTION
•
the unit and disconnect its power supply.
•
in the unit. The sharp metal edges can cut you.
• Do not use water to clean the inside of the
indoor unit. This can destroy insulation and
cause electrical shock.
•
CAUTION
• Any maintenance and cleaning of outdoor unit
or a licensed service provider.
• Any unit repairs should be performed by an
If using water, the inlet side
should face down and away
from the water stream.
If using a vacuum cleaner,
the inlet side should face
the vacuum.
UNIT SPECIFICATIONS AND FEATURES (Continued)
OTHER FEATURES
• DEFAULT SETTING
When the air conditioner restarts after a power
failure, it will default to the factory settings
(AUTO mode, AUTO fan, 76°F(24°C)). This may
cause inconsistencies on the remote control
and unit panel. Use your remote control to
update the status.
• AUTO-RESTART
In case of power failure, the system will
immediately stop. When power returns, the
To restart the unit, press the ON/OFF button
on the remote control. If the system has an
auto restart function, the unit will restart using
the same settings.
• THREE-MINUTE PROTECTION FEATURE
A protection feature prevents the air
conditioner from being activated for
approximately 3 minutes when it restarts
immediately after operation.
• LOUVER ANGLE MEMORY
Some models are designed with a louver angle
memory function. When the unit restarts after
louvers will automatically return to the previous
should not be set too small as condensation
may form and drip into the machine. To reset
the louver, press the manual button, which will
• REFRIGERANT LEAKAGE DETECTION
3PAMSCH24 MODEL ONLY.
In the event of a refrigerant leak, the LED
DISPLAY will display refrigerant leak error
14 15
SAFETY & PRECAUTIONS TROUBLESHOOTING
SAFETY PRECAUTIONS
• The power cord is damaged or abnormally warm
• You smell a burning odor
• The unit emits loud or abnormal sounds
• A power fuse blows or the circuit breaker frequently trips
• Water or other objects fall into or out of the unit
DO NOT ATTEMPT TO FIX THESE YOURSELF! CONTACT AN AUTHORIZED SERVICE
PROVIDER IMMEDIATELY!
COMMON ISSUES
The following problems are not a malfunction and in most situations will not require repairs.
Issue Possible Causes
Unit does not turn on
when pressing ON/OFF
button
The Unit has a 3-minute protection feature that prevents the unit from
Cooling and Heating Models: If the Operation light and PRE-DEF (Pre-heating/
Defrost) indicators are lit up, the outdoor temperature is too cold and the unit’s
anti-cold wind is activated in order to defrost the unit.
In Cooling-only Models: If the “Fan Only” indicator is lit up, the outdoor temperature
The unit changes from
COOL/HEAT mode to
FAN mode
The unit may change its setting to prevent frost from forming on the unit.
Once the temperature increases, the unit will start operating in the previously
selected mode again.
The indoor unit emits
white mist
the conditioned air can cause white mist.
Both the indoor and
outdoor units emit
white mist
When the unit restarts in HEAT mode after defrosting, white mist may be
emitted due to moisture generated from the defrosting process.
The indoor unit
makes noises
A rushing air sound may occur when the louver resets its position.
A squeaking sound is heard when the system is OFF or in COOL mode.
The noise is also heard when the drain pump (optional) is in operation.
A squeaking sound may occur after running the unit in HEAT mode due to
expansion and contraction of the unit’s plastic parts.
CARE AND MAINTENANCE (Continued)
Clean all lters Turn on FAN function until
unit dries out completely
Turn o the unit and
disconnect the power
Remove batteries
from remote control
MAINTENANCE –
PRE-SEASON INSPECTION
After long periods of non-use, or before periods
of frequent use, do the following:
Check for damaged wires
Clean all lters
Check for leaks Replace batteries
Make sure nothing is blocking all air inlets and outlets
MAINTENANCE –
LONG PERIODS OF NON-USE
If you plan not to use your air conditioner for an
extended period of time, do the following:
16 17
SAFETY & PRECAUTIONS TROUBLESHOOTING (Continued)
Problem Possible Causes Solution
The unit is
not working
Power failure Wait for the power to be restored
Turn on the power
The fuse is burned out Replace the fuse
Remote control batteries are dead Replace batteries
The Unit’s 3-minute protection has
been activated
Wait three minutes after restarting
the unit
Timer is activated
The unit starts
and stops frequently
There’s too much or too little
refrigerant in the system
Check for leaks and recharge the
system with refrigerant.
Incompressible gas or moisture has
entered the system.
Evacuate and recharge the system
with refrigerant
The compressor is broken Replace the compressor
The voltage is too high or too low Install a manostat to regulate
the voltage
Poor heating
performance
The outdoor temperature is
extremely low Use auxiliary heating device
Cold air is entering through doors
and windows
Make sure that all doors and
windows are closed during use
Low refrigerant due to leak or
long-term use
Check for leaks, re-seal if
Indicator lamps
continue ashing The unit may stop operation or continue to run safely. If the indicator lamps
problem may resolve itself.
If not, disconnect the power, then connect it again. Turn the unit on.
If the problem persists, disconnect the power and contact your nearest
customer service center.
Error code appears and
begins with the letters as
the following in the window
display of indoor unit:
• E(x), P(x), F(x)
• EH(xx), EL(xx), EC(xx)
• PH(xx), PL(xx), PC(xx)
NOTE:
TROUBLESHOOTING (Continued)
NOTE: If problem persists, contact a local dealer or your nearest customer service center. Provide them
with a detailed description of the unit malfunction as well as your model number.
Issue Possible Causes
Both the indoor
unit and outdoor
unit make noises
Low hissing sound during operation: This is normal and is caused by
Low hissing sound when the system starts, has just stopped running, or is
defrosting: This noise is normal and is caused by the refrigerant gas stopping
or changing direction.
Squeaking sound: Normal expansion and contraction of plastic and metal parts
caused by temperature changes during operation can cause squeaking noises.
The outdoor unit
makes noises
Dust is emitted from
either the indoor or
outdoor unit
The unit may accumulate dust during extended periods of non-use, which will
be emitted when the unit is turned on. This can be mitigated by covering the
unit during long periods of inactivity.
The unit emits
a bad odor
The unit may absorb odors from the environment (such as furniture, cooking,
cigarettes, etc.) which will be emitted during operations.
The fan of the outdoor
unit does not operate
Problem Possible Causes Solution
Poor cooling
performance
Temperature setting may be higher
than ambient room temperature Lower the temperature setting
The heat exchanger on the indoor
or outdoor unit is dirty
according to instructions
The air inlet or outlet of either
unit is blocked
obstruction and turn it back on
Doors and windows are open
Make sure that all doors and windows
are closed while operating the unit
Excessive heat is generated
by sunlight
Close windows and curtains during
periods of high heat or bright sunshine
Too many sources of heat in the room
(people, computers, electronics, etc.)
Reduce amount of heat sources
Low refrigerant due to leak or
long-term use
Check for leaks, re-seal if necessary
TROUBLESHOOTING
When troubles occur, please check the following points before contacting a repair company.
18 19
SAFETY & PRECAUTIONS INSTALLATION SUMMARY
Install the indoor unit
Evacuate the
refrigeration system
Install the front panel
Install the drainpipe
Connect the wires
Perform a test run
Install the outdoor unit
Connect the
refrigerant pipes
ACCESSORIES
Name Shape Quantity (PC)
Connecting pipe
assembly
Liquid side
Parts you must purchase
separately. Consult the dealer
the unit you purchased.
Gas side
Accessory Quantity
(pc) Shape Accessory Quantity
(pc) Shape
Manual
1
Installation paper
template
1
Outlet pipe sheath
(some models)
1
Drain joint
1
Outlet
pipe clasp
1~2
Seal ring
1
Copper nut
2
The air conditioning system comes with the following accessories. Use all of the installation parts and accessories
the equipment to fail. The items are not included with the air conditioner must be purchased separately.
OPTIONAL ACCESSORIES
There are two types of remote controls: wired and wireless. Select a remote controller based on customer
preferences and requirements and install in an appropriate place.
Refer to catalogues and technical literature for guidance on selecting a suitable remote control.
20 21
SAFETY & PRECAUTIONS UNIT PARTS
Air outlet
Air inlet
Front grille
Display panel
Remote control
Drain pipe
Connecting pipe
Air inlet
Air outlet
3PAMSCH24
(Continued)
NOTE ON ILLUSTRATIONS: Illustrations in this manual are for explanatory purposes. The actual shape of
UNIT PARTS
NOTE: The installation must be performed in accordance with the requirement of local and national
Air outlet
Air inlet
Front grille
Display panel
Remote control
Drain pipe
Connecting pipe
Air inlet
Air outlet
3PAMSCH12 & 3PAMSCH18
22 23
SAFETY & PRECAUTIONS INDOOR UNIT INSTALLATION (Continued)
STEP 2: HANG INDOOR UNIT
Use the included paper template to cut a
rectangular hole in the ceiling, leaving at least
Be sure to mark the areas where ceiling hook
holes will be drilled.
3PAMSCH12 & 3PAMSCH18
Compact models ceiling hole size
545mm / 21.5” (Suspension bolt)
570mm / 22.4”(Body)
600mm / 23.6”(Ceiling opening)
647mm / 25.5”(Panel)
523mm / 20.6”
(Suspension bolt)
570mm / 22.4” (Body)
647mm / 25.5” (Panel)
600mm / 23.6” (Ceiling opening)
Refrigerant piping side
Drain hose side
>100cm / 39”
>100cm / 39”
>100cm / 39”
>100cm / 39”
770mm / 30.3” (Suspension bolt)
830mm / 32.7”(Body)
900mm / 35.4”(Ceiling opening)
950mm / 37.4”(Panel)
950mm / 37.4”(Panel)
670mm / 26.4”
(Suspension bolt)
830mm / 32.7” (Body)
900mm / 35.4” (Ceiling opening)
Refrigerant piping side Drain hose side
3PAMSCH24
CAUTION
The unit body should align perfectly with the hole.
before moving on.
3PAMSCH12 & 3PAMSCH18
Drill 4 holes 2” (5cm) deep at the ceiling hook
positions in the internal ceiling. Be sure to
hold the drill at a 90° angle to the ceiling.
3PAMSCH24
Drill 4 holes 4.7”-6.1” (12cm-15.5cm) deep
at the ceiling hook positions in the internal
ceiling. Be sure to hold the drill at
a 90° angle to the ceiling.
Using a hammer, insert the ceiling
hooks into the pre-drilled holes.
Secure the bolt using the included
washers and nuts.
Install the four suspension bolts.
INDOOR UNIT INSTALLATION
INSTALLATION INSTRUCTIONS –
INDOOR UNIT
STEP 1: SELECT INSTALLATION LOCATION
Before installing the indoor unit, you must choose
an appropriate location. The following are standards
that will help you choose an appropriate location for
the unit.
Proper installation locations
meet the following standards:
;Enough room exists for installation and
maintenance.
;Enough room exists for the connecting the
pipe and drainpipe.
;
sustain the weight of the indoor unit.
;The air inlet and outlet are not blocked.
;
;There is no direct radiation from heaters.
DO NOT install unit
in the following locations:
;Areas with oil drilling or fracking
;Coastal areas with high salt content in the air
;Areas with caustic gases in the air, such as
hot springs
;
such as factories
;Enclosed spaces, such as cabinets
;Kitchens that use natural gas
;Areas with strong electromagnetic waves
;
;Rooms with high humidity, such as bathrooms
or laundry rooms
RECOMMENDED DISTANCES BETWEEN
THE INDOOR UNIT AND THE CEILING
The distance between the mounted indoor unit
and the internal ceiling should meet the following
Distance from ceiling relative to height of indoor unit
Distance from ceiling relative to height of indoor unit
NOTE: Panel installation should be
performedafter piping and wiring have been
completed.
A
Front panel
Ground
Ceiling board
>250cm / 98.4”
B (Ceiling hole)
Ceiling
LENGTH OF A
(INCH/MM)
LENGTH OF H
(INCH/MM)
LENGTH OF B
(INCH/MM)
10.2/260 11.4/> 290 23.6/600
LENGTH OF A
(INCH/MM)
LENGTH OF H
(INCH/MM)
LENGTH OF B
(INCH/MM)
8.03/205 9.06/230 35.4/900
Front panel
Ceiling
board B (Ceiling hole)
Ceiling
A
＞400cm / 157.5”
＞200cm / 78.7”
＞150cm / 59.1”
＞150cm / 59.1”
(200cm / 78.7”
recommended )
Ceiling
Ground
Indoor unitIndoor unit
Illumination
Ventilator
>230cm / 90.6”
Ceiling
H
3PAMSCH12 & 3PAMSCH18
3PAMSCH24
24 25
SAFETY & PRECAUTIONS
STEP 3: DRILL WALL HOLE FOR
CONNECTIVE PIPING
Determine the location of the wall hole based
on the position of the mounting plate. Refer to
Mounting Plate Dimensions.
Using a 2.5in (65mm) or 3.54in (90mm)
(depending on models) core drill, drill a hole in
the wall. Make sure that the hole is drilled at
a slight downward angle, so that the outdoor
end of the hole is lower than the indoor end
by about 0.2-0.275in (5mm to 7mm). This will
ensure proper water drainage.
This protects the edges of the hole and will
process.
CAUTION
When drilling the wall hole, make sure to avoid
wires, plumbing, and other sensitive components.
CAUTION
When drilling the wall hole, make sure to avoid
wires, plumbing, and other sensitive components.
Wall
IndoorOutdoor
≈ 12mm / 0.5”
STEP 4: CONNECT DRAIN HOSE
The drainpipe is used to drain water away from
the unit. Improper installation may cause unit and
property damage.
CAUTION
• Insulate all piping to prevent condensation,
which could lead to water damage.
• If the drainpipe is bent or installed incorrectly,
water may leak and cause a water-level switch
malfunction.
• In HEAT mode, the outdoor unit will discharge
water. Ensure that the drain hose is placed in
an appropriate area to avoid water damage and
slippage.
• DO NOT pull the drainpipe forcefully. This
could disconnect it.
NOTE ON PURCHASING PIPES
Installation requires a polyethylene tube
(exterior diameter = 2.5cm or 3.7-3.9cm)
(depending on models ), which can be obtained
at your local hardware store or dealer.
INDOOR UNIT INSTALLATION (Continued)
NOTE FOR NEW HOME INSTALLATION
When installing the unit in a new home, the
ceiling hooks can be embedded in advance.
Make sure that the hooks do not come loose
due to concrete shrinkage. After installing
the indoor unit, fasten the installation paper
template onto the unit with bolts to determine
in advance the dimension and position of the
opening on the ceiling. Follow the instructions
above for the remainder of the installation.
Paper pattern for
installation
(on some models)
Center of the
ceiling openiing
bolts
INDOOR UNIT INSTALLATION (Continued)
Mount the indoor unit. You will need two
people to lift and secure it. Insert suspension
bolts into the unit’s hanging holes. Fasten
them using the included washers and nuts.
3PAMSCH12 & 3PAMSCH18
NOTE:
The bottom of the unit should be 0.9”
(24mm)higher than the ceiling board. Generally,
half the length of the suspension bolt or long
Wall
Ceiling board
Main body
or 24mm (0.9”)
L
10 - 18mm (0.4-0.7”)
3PAMSCH24
NOTE:
The bottom of the unit should be
0.4-0.98” (10-25mm) higher than the ceiling
board. Generally, L (indicated in the following
suspension bolt or long enough to prevent
L
52~51
631
CAUTION
Ensure that the unit is completely level. Improper
installation can cause the drain pipe to back up
into the unit or water leakage.
NOTE:
Ensure that the indoor unit is level.
The unit is equipped with a built-in drain pump
and cause water to leak. (for some models)
Water level
26 27
SAFETY & PRECAUTIONS INDOOR UNIT INSTALLATION (Continued)
NOTE: When connecting multiple drainpipes,
install the pipes as illustrated in the following
Figure.
The conduit
installation plate
screws
(not supply)
Chassis
The conduit
installation plate
Cord conduit
3PAMSCH12 & 3PAMSCH18
0-53cm
(20.8”)
≥10cm
(4”)
3PAMSCH24
Vent
≤75cm
(29.5”)
Pass the drain hose through the wall hole. Make
sure the water drains to a safe location where it
NOTE: The drainpipe outlet should be at least
1.9” (5cm) above the ground. If it touches the
ground, the unit may become blocked and
malfunction. If you discharge the water directly
into a sewer, make sure that the drain has a U
or S pipe to catch odors that might otherwise
come back into the house.
How to install the conduit installation plate
(if supplied)
Fix the sheath connector (not supply) on the
wire hole of the conduit installation plate.
Fix the the conduit installation plate on the
chassis of the unit.
INDOOR UNIT INSTALLATION (Continued)
Indoor Drainpipe Installation
Install the drainpipe as illustrated in the following
Figure.
3PAMSCH12 & 3PAMSCH18
Drainpipe
connecting port
Drain hose
Metal clamp Insulation
Downward slope
1/100
1-1.5m
(39-59”)
3PAMSCH24
1-1.5m
(39-59”)
Downward slope
1/100
1-1.5m
(39-59”)
3PAMSCH12 & 3PAMSCH18
≤75cm
(29.5”)
Ceiling
1 - 1.5m
(39-59”)
0 - 75mm
(3”)
≤30cm (11.8”)
≤53cm
(20.8”)
22cm
(8.6”)
3PAMSCH24
≤75cm
(29.5”)
1 - 1.5m
(39-59”)
NOTE ON DRAINPIPE INSTALLATION
• When using an extended drainpipe,
tighten the indoor connection with an
additional protection tube to prevent it
from pulling loose.
• The drainpipe should slope downward at a
gradient of at least 1/100 to prevent water
• To prevent the pipe from sagging, space
hanging wires every 39-59” (1-1.5m).
• If the outlet of the drainpipe is higher than the
body’s pump joint, provide a lift pipe for the
exhaust outlet of the indoor unit. The lift pipe
must be installed no higher than 29.5” (75cm)
from the ceiling board and the distance
between the unit and the lift pipe must be less
than 11.8” (30cm) (depending on models).
• Incorrect installation could cause water to
• To prevent air bubbles, keep the drain hose
level or slightly tiled up (< 3”/75mm)
(some models ).
28 29
SAFETY & PRECAUTIONS OUTDOOR UNIT INSTALLATION
STEP 3: ANCHOR OUTDOOR UNIT
The outdoor unit can be anchored to the ground or
to a wall-mounted bracket with bolt(M10). Prepare
the installation base of the unit according to the
dimensions below.
UNIT MOUNTING DIMENSIONS
and the distance between their mounting feet.
Prepare the installation base of the unit according
to the dimensions below.
(Continued)
IN COLD CLIMATES
In cold climates, make sure that the drain hose
is as vertical as possible to ensure swift water
drainage. If water drains too slowly, it can
STEP 2: INSTALL DRAIN JOINT
Before bolting the outdoor unit in place, you must
install the drain joint at the bottom of the unit.
joints depending on the type of outdoor unit.
If the drain joint comes with a rubber seal
(see Fig. A), do the following:
Fit the rubber seal on the end of the drain
joint that will connect to the outdoor unit.
Insert the drain joint into the hole in the base
pan of the unit.
Rotate the drain joint 90° until it clicks in place
facing the front of the unit.
Connect a drain hose extension (not included)
to the drain joint to redirect water from the
unit during heating mode.
If the drain joint doesn’t come with a rubber seal
(see Fig. B), do the following:
Insert the drain joint into the hole in the base
pan of the unit. The drain joint will click in
place.
Connect a drain hose extension (not included)
to the drain joint to redirect water from the
unit during heating mode.
A
B
D
W
H
W
H
Split Type Outdoor Unit
OUTDOOR UNIT INSTALLATION
Install the unit by following local codes and
INSTALLATION INSTRUCTIONS –
OUTDOOR UNIT
STEP 1: SELECT INSTALLATION LOCATION
Before installing the outdoor unit, you must
choose an appropriate location. The following are
standards that will help you choose an appropriate
location for the unit.
Proper installation locations meet the following
standards:
;Meets all spatial requirements shown in
Installation Space Requirements above.
;Good air circulation and ventilation
;Firm and solid—the location can support
the unit and will not vibrate
;Noise from the unit will not disturb others
;Protected from prolonged periods of direct
sunlight or rain
;Where snowfall is anticipated, take
appropriate measures to prevent ice
buildup and coil damage.
If the unit is frequently exposed to heavy
rain or snow:
Build a shelter above the unit to protect
it from the rain or snow. Be careful not to
If the unit is frequently exposed to
salty air (seaside):
Use outdoor unit that is specially designed
to resist corrosion.
DO NOT install unit in the following locations:
;Near an obstacle that will block air inlets
and outlets
;Near a public street, crowded areas, or
where noise from the unit will disturb others
;Near animals or plants that will be harmed
by hot air discharge
;Near any source of combustible gas
;In a location that is exposed to large amounts
of dust
;In a location exposed to a excessive amounts
of salty air
SPECIAL CONSIDERATIONS
FOR EXTREME WEATHER
If the unit is exposed to heavy wind:
Install unit so that air outlet fan is at a 90° angle
to the direction of the wind. If needed, build
a barrier in front of the unit to protect it from
extremely heavy winds.
See Figures below.
30 31
SAFETY & PRECAUTIONS REFRIGERANT PIPING CONNECTION
When connecting refrigerant piping, do not
enter the unit. The presence of other gases or substances will lower the unit’s capacity, and can cause
abnormally high pressure in the refrigeration cycle. This can cause explosion and injury.
NOTE ON PIPE LENGTH
A minimum pipe run of 10’ (3m) is required to minimize vibration & excessive noise.
Ensure that the length of the refrigerant pipe, the number of bends, and the drop height between the indoor
and outdoor units meets the requirements shown in the following table:
The Maximum Length and Drop Height Based on Models
Capacity (BTU/h) Length of Piping (ft) Max. Drop Height (ft)
< 15K 82
(25m)
32.8
(10m)
≥ 15K - < 24K 98.4
(30m)
65.6
(20m)
≥ 24K - < 36K 164
(50m)
82
(25m)
≥ 36K - < 60K 246
(75m)
98.4
(30m)
CAUTION
OIL TRAPS
compressor, this might cause liquid compression
or deterioration of oil return. Oil traps in the rising
gas piping can prevent this.
An oil trap should be installed every 20ft (6m) of
vertical suction line riser (<36000Btu/h unit).
An oil trap should be installed every 32.8ft (10m)
10m/32.8ft
(≥36000Btu/h unit)
6m/20ft
(＜36000Btu/h unit)
10m/32.8ft
(≥36000Btu/h unit)
6m/20ft
(＜36000Btu/h unit)
Indoor unit/
Outdoor unit
Indoor unit/
Outdoor unit
OUTDOOR UNIT INSTALLATION (Continued)
Outdoor Unit Dimensions (in) Mounting Dimensions
W H D Distance A (in) Distance B (in)
29.9 23.2 11.2 (760 590 285mm) 20.85 (530mm) 11.4 (290mm)
31.9 22 12.2 (810 558 310mm) 21.6 (549mm) 12.8 (325mm)
33.27 27.5 12.6 (845 700 320mm) 22 (560mm) 13.2 (335mm)
35.4 33.85 12.4 (900 860 315mm) 23.2 (590mm) 13.1 (333mm)
37.2 31.9 15.55 (945 810 395mm) 25.2 (640mm) 15.95 (405mm)
38.98 38 13.58 (990 965 345mm) 24.58 (624mm) 14.4 (366mm)
36.93 53.9 15.43 (938 1369 392mm) 24.96 (634mm) 15.9 (404mm)
35.4 46 13.8 (900 1170 350mm) 23.2 (590mm) 14.88 (378mm)
31.5 21.8 13.1 (800 554 333mm) 20.24 (514mm) 13.39 (340mm)
33.27 27.6 14.3 (845 702 363mm) 21.26 (540mm) 13.8 (350mm)
37.24 31.9 16.53 (946 810 420mm) 26.5 (673mm) 15.87 (403mm)
37.24 31.9 16.14 (946 810 410mm) 26.5 (673mm) 15.87 (403mm)
37.5 52.5 16.14 (952 1333 410mm) 24.96 (634mm) 15.9 (404mm)
37.5 52.5 16.34 (952 1333 415mm) 24.96 (634mm) 15.9 (404mm)
35 26.5 13.46 (890 673 342mm) 26.1 (663mm) 13.94 (354mm)
30.1 21.8 11.9 (765 555 303mm) 17.8 (452mm) 11.3 (286mm)
31.7 21.8 12.9 (805 554 330mm) 20.1 (511mm) 12.5 298 (317mm)
30.3 21.8 11.8 (770 555 300mm) 19.2 (487mm) 11.7 (298mm)
L
H
300 cm / 118” or more
A
60 cm / 23.6”
or more
150 cm / 59”
or more
25 cm / 9.8”
or more
25 cm / 9.8”
or more
Rows of series installation
The relations between H, A and L are as follows.
L A
L ≤ H L ≤ 1/2H 9.8” / 25 cm or more
1/2H < L ≤ H 11.8” / 30 cm or more
L > H Can not be installed
32 33
SAFETY & PRECAUTIONS REFRIGERANT PIPING CONNECTION (Continued)
accordance with the dimensions.
STEP 4: CONNECT PIPES
then connect it to the outdoor unit. You should
pressure pipe.
PIPING EXTENSION BEYOND FLARE FORM
Outer Diameter of A (in)
Pipe (in) Min. Max.
Ø 0.25 (Ø 6.35mm) 0.0275 (0.7mm) 0.05 (1.3mm)
Ø 0.375 (Ø 9.52mm) 0.04 (1.0mm) 0.063 (1.6mm)
Ø 0.5 (Ø12.7mm) 0.04 (1.0mm) 0.07 (1.8mm)
Ø 0.63 (Ø 16mm) 0.078 (2.0mm) 0.086 (2.2mm)
Ø 0.75 (Ø 19mm) 0.078 (2.0mm) 0.094 (2.4mm)
the pipes.
TORQUE REQUIREMENTS
Outer Diameter
of Pipe (in)
Tightening
Torque Flare shape
Ø 0.25 (Ø 6.35mm) 13 - 15 ft-lbs
Ø 0.375 (Ø 9.52mm) 23 - 29 ft-lbs
Ø 0.5 (Ø 12.7mm) 36 - 43 ft-lbs
Ø 0.63 (Ø 16mm) 42 - 52 ft-lbs
Ø 0.75 (Ø 19mm) 49 - 74 ft-lbs
DO NOT USE EXCESSIVE TORQUE
Excessive force can break the nut or damage
the refrigerant piping. You must not exceed
torque requirements shown in the table above.
NOTE:
Align the center of the two pipes that you will
connect.
by hand.
Using a spanner, grip the nut on the
unit tubing.
to the torque values in above table.
inspect the end of the pipe for cracks and
CAUTION
• Ensure to wrap insulation around the piping.
Direct contact with the bare piping may result
in burns or frostbite.
• Make sure the pipe is properly connected.
Over tightening may damage the bell mouth
and under tightening may lead to leakage.
CONNECTION INSTRUCTIONS –
REFRIGERANT PIPING
STEP 1: CUT PIPES
When preparing refrigerant pipes, take extra care
future maintenance.
Measure the distance between the indoor
and outdoor units.
Using a pipe cutter, cut the pipe a little longer
than the measured distance.
Make sure that the pipe is cut at
a perfect 90° angle.
DO NOT DEFORM
PIPE WHILE CUTTING
Be extra careful not to damage, dent, or deform
the pipe while cutting. This will drastically reduce
CAUTION
• The branching pipe must be installed
cause malfunction.
• DO NOT install the connecting pipe until both
indoor and outdoor units have been installed.
• Insulate both the gas and liquid piping to
prevent water leakage.
REFRIGERANT PIPING CONNECTION (Continued)
STEP 2: REMOVE BURRS
piping connection. They must be completely
removed.
Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.
Using a reamer or deburring tool, remove all
burrs from the cut section of the pipe.
STEP 3: FLARE PIPE ENDS
After removing burrs from cut pipe, seal
the ends with PVC tape to prevent foreign
materials from entering the pipe.
Sheath the pipe with insulating material.
sure they are facing in the right direction,
because you can’t put them on or change
Remove PVC tape from ends of pipe when
The end of the pipe must extend beyond
34 35
SAFETY & PRECAUTIONS WIRINGREFRIGERANT PIPING CONNECTION (Continued)
NOTE: DO NOT intertwine signal cable with
other wires. While bundling these items
together, do not intertwine or cross the
signal cable with any other wiring.
After connecting the copper pipes to
the indoor unit, wrap the power cable,
signal cable and the piping together
with binding tape.
Thread this pipeline through the wall and
connect it to the outdoor unit.
Insulate all the piping, including the valves of
the outdoor unit.
Open the stop valves of the outdoor unit to
indoor and outdoor unit.
CAUTION
Check to make sure there is no refrigerant leak
after completing the installation work. If there is a
refrigerant leak, ventilate the area immediately and
evacuate the system (refer to the Air Evacuation
section of this manual).
BEFORE PERFORMING ANY
ELECTRICAL WORK, READ
THESE REGULATIONS
All wiring must comply with local and national
electrical codes, regulations and must be
installed by a licensed electrician.
All electrical connections must be made
according to the Electrical Connection
Diagram located on the panels of the indoor
and outdoor units.
If there is a serious safety issue with the
power supply, stop work immediately. Explain
your reasoning to the client, and refuse
to install the unit until the safety issue is
properly resolved.
Power voltage should be within 90-110% of
protector and main power switch should be
installed.
or circuit breaker that disconnects all poles
and has a contact separation of at least 1/8in
approved circuit breaker or switch.
Only connect the unit to an individual branch
circuit outlet. Do not connect another
appliance to that outlet.
Make sure to properly ground the air
conditioner.
wiring can cause the terminal to overheat,
resulting in product malfunction and possible
Do not let wires touch or rest against
refrigerant tubing, the compressor, or any
moving parts within the unit.
If the unit has an auxiliary electric heater, it
must be installed at least 40in (1m) away from
any combustible materials.
To avoid getting an electric shock, never
touch the electrical components soon after
or more before you touch the electrical
components.
Make sure that you do not cross your
electrical wiring with your signal wiring. This
may cause distortion and interference.
The unit must be connected to the main
outlet. Normally, the power supply must have
a impedance of 32 ohms.
No other equipment should be connected to
the same power circuit.
Connect the outdoor wires before connecting
the indoor wires.
WARNING
BEFORE PERFORMING ANY ELECTRICAL
OR WIRING WORK, TURN OFF THE MAIN
POWER TO THE SYSTEM.
NOTE ON AIR SWITCH
When the maximum current of the air
conditioner is more than 16A, an air switch
or leakage protection switch with protective
device shall be used (purchased separately).
The appliance should be wired according to
NEC and CEC requirements.
(A)
NOTE: The cographs are for explanation
purpose only. Your machine may be slightly
NOTE ON MINIMUM BEND RADIUS
Carefully bend the tubing in the middle
according to the diagram below. DO NOT bend
the tubing more than 90° or more than 3 times.
Bend the pipe with thumb
min-radius 3.9” (10cm)
Indoor unit
Outdoor unit
Air switch
(purchased seperately)
(purchased seperately)
Outdoor unit power wires Indoor & Outdoor
connective wires
36 37
SAFETY & PRECAUTIONS
OUTDOOR UNIT WIRING
WARNING
BEFORE PERFORMING ANY ELECTRICAL
OR WIRING WORK, TURN OFF THE MAIN
POWER TO THE SYSTEM.
Prepare the cable for connection
H07RN-F(14-4 AWG) cables.
NOTE: In North America, choose the cable
type according to the local electrical codes
and regulations.
CHOOSE THE RIGHT CABLE SIZE
fuse, and switch needed is determined by the
maximum current of the unit. The maximum
current is indicated on the nameplate located on
the side panel of the unit. Refer to this nameplate
to choose the right cable, fuse, or switch.
NOTE: In North America, please choose the
Circuit Ampacity indicated on the nameplate
of the unit.
b. Using wire strippers, strip the rubber jacket
from both ends of the signal cable to reveal
approximately 5.9” (15cm) of wire.
c. Strip the insulation from the ends.
d. Using a wire crimper,
crimp u-lugs on the ends.
NOTE: When connecting the wires, strictly
follow the wiring diagram found inside the
electrical box cover.
WIRING (Continued) WIRING (Continued)
Remove the electric cover of the outdoor unit.
If there is no cover on the outdoor unit, take
remove the protection board.
Cover
Screw
Connect the u-lugs to the terminals Match
the wire colors/labels with the labels on the
terminal block. Firmly screw the u-lug of each
wire to its corresponding terminal.
Clamp down the cable with the cable clamp.
Insulate unused wires with electrical tape.
Keep them away from any electrical or metal
parts.
Reinstall the cover of the electric control box.
INDOOR UNIT WIRING
Prepare the cable for connection
a. Using wire strippers, strip the rubber jacket
from both ends of the signal cable to reveal
about 5.9”(15cm) of the wire.
b.
Strip the insulation from the ends of the wires.
c. Using a wire crimper, crimp the u-lugs to
the ends of the wires.
Open the front panel of the indoor unit. Using
a screwdriver,remove the cover of the electric
control box on your indoor unit.
Thread the power cable and the signal cable
through the wire outlet.
Connect the u-lugs to the terminals. Match
the wire colors/labels with the labels on the
terminal block. Firmly screw the u-lug of each
wire to its corresponding terminal. Refer to the
Serial Number and Wiring Diagram located on
the cover of the electric control box.
1. Control box lid
2. Wiring diagram label
3. Power supply
terminal block
4. Clamp for wiring
5. Wiring between units
6. Plastic cover
7. Clamp (eld supply)
COMPACT MODELS CAUTION
• While connecting the wires, please strictly
follow the wiring diagram.
• The refrigerant circuit can become very hot.
Keep the interconnection cable away from
the copper tube.
Clamp down the cable with the cable clamp.
The cable must not be loose or pull on the
u-lugs.
Reattach the electric box cover.
38 39
SAFETY & PRECAUTIONS
AIR EVACUATION
Close the Low Pressure side of the manifold
Wait for 5 minutes, then check that there has
been no change in system pressure.
If there is a change in system pressure, refer
to Gas Leak Check section for information on
how to check for leaks. If there is no change
in system pressure, unscrew the cap from the
packed valve (high pressure valve).
Insert hexagonal wrench into the packed
valve (high pressure valve) and open
the valve by turning the wrench in a 1/4
counterclockwise turn. Listen for gas to
exit the system, then close the valve after 5
seconds.
Watch the Pressure Gauge for one minute
to make sure that there is no change in
pressure. The Pressure Gauge should read
slightly higher than atmospheric pressure.
Remove the charge hose from the
service port.
Using hexagonal wrench, fully open both the
high pressure and low pressure valves.
Tighten valve caps on all three valves (service
port, high pressure, low pressure) by hand.
You may tighten it further using a torque
wrench if needed.
PREPARATIONS AND PRECAUTIONS
Air and foreign matter in the refrigerant circuit
can cause abnormal rises in pressure, which can
and cause injury. Use a vacuum pump and
manifold gauge to evacuate the refrigerant circuit,
removing any non-condensable gas and moisture
from the system.
Evacuation should be performed upon initial
installation and when unit is relocated.
BEFORE PERFORMING EVACUATION
;Check to make sure the connective pipes
between the indoor and outdoor units are
connected properly .
;Check to make sure all wiring is connected
properly.
EVACUATION INSTRUCTIONS
Connect the charge hose of the manifold
gauge to service port on the outdoor unit’s
low pressure valve.
Connect another charge hose from the
manifold gauge to the vacuum pump.
Open the Low Pressure side of the manifold
gauge. Keep the High Pressure side closed.
Turn on the vacuum pump to evacuate the
system.
Run the vacuum for at least 15 minutes,
or until the Compound Meter reads
-10 Pa (-76cmHG).
OPEN VALVE STEMS GENTLY
When opening valve stems, turn the hexagonal
wrench until it hits against the stopper.
Do not try to force the valve to open further.
AIR EVACUATION (Continued)
NOTE ON ADDING REFRIGERANT
Some systems require additional charging depending on pipe lengths. The standard pipe length varies
according to local regulations. For example, in North America, the standard pipe length is 25’ (7.5m).
In other areas, the standard pipe length is 16‘ (5m). The refrigerant should be charged from the service port
on the outdoor unit’s low pressure valve. The additional refrigerant to be charged can be calculated using the
following formula:
CAUTION
DO NOT mix refrigerant types.
LIQUID SIDE DIAMETER
1/4”( 6.35) 3/8”( 9.52) 1/2”( 12.7)
R410A:
(orice tube in the indoor unit):
(Total pipe length -
standard pipe length)
x0.32oZ(30g)/ft(m)
(Total pipe length -
standard pipe length)
x0.69oZ(65g)/ft(m)
(Total pipe length -
standard pipe length)
x1.23oZ(115g)/ft(m)
R410A:
(orice tube in the indoor unit):
(Total pipe length -
standard pipe length)
x0.16oZ(15g)/ft(m)
(Total pipe length -
standard pipe length)
x0.32oZ(30g)/ft(m)
(Total pipe length -
standard pipe length)
x0.69oZ(65g)/ft(m)
This manual suits for next models
2
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