DUCTLESS MINI SPLIT SYSTEM AIR CONDITIONER / HEAT PUMP
WYT-25 Inverter Series
For 9,000-24,000 BTU/hr Systems
Installation &
User’s Manual
IMPORTANT NOTICE:
Please read this manual carefully before installing
or operating your new air conditioning system.
Be sure to save this manual for future reference.
Quantum Hyperformance (R-454B) - WT Indoor and YN Outdoor
REV250410
Table of Contents
Installation Manual
Operating Instructions..............
9
1.
9
Remote Buttons Overview.......................................
2.
10
Remote Controller LED Screen And Icons....
3.
11
Handling the Remote Controller..........................
4.
12
Controlling the System’s Airflow..........................
5.
Indoor Unit Mode Settings......................................
13
6.
15
Extra Options and Settings......................................
7.
17
Managing the Timer Features...............................
8.
18
Other Features................................................................
9.
Operating Temperature Notes..............................
20
7
1.
2.
Pre-Mounting Instructions.............................................................
32
33
Indoor Unit Installation Location Selection........................
3.
36
Preparing the Refrigerant Piping..............................................
4. Preparing the Drain Line...............................................................
5.
6. Routing the Copper Lines and Mounting the Unit.......
Preparing the Signal Cable..........................................................
37
38
39
4
0 Safety Precautions.............................
6
4
8
Indoor Unit Overview.......................
21
5
1
System Components........................
2
Included Accessories.......................
7
Indoor Unit Installation...........................
32
Maintenance Instructions.....................
22
6
A2L Refrigerant Information.................
3
T
Troubleshooting..............................
51
A
Appendix..............................................
53
1.
Leak Check/Test Run.......
49
2.
2.
Electrical and Gas Leak Check................
49
54
Test Run..................................................................
50
Guidelines for Drilling the Wall Hole........................
3.
55
Simplified Wiring Diagram...............................................
4.
Control Board Wiring Diagrams..................................
56
5.
Additional Leakage Sensor Information................
57
6.
Disposal Guidelines...............................................................
58
7.
Notes from the Installer......................................................
59
1.
53
Anchoring the Outdoor Unit Guide
.........................
9
MC MC
1.
2.
Mounting Instructions...................................................................
40
3.
Outdoor Unit Installation Location Selection................
41
4.
5.
Connection of Refrigerant Piping..........................................
Electrical Wiring of the Outdoor Unit..................................
42
44
47
Evacuating the Refrigerant Circuit........................................
8
Outdoor Unit Installation...................
40
T
Troubleshooting..............................
51
A
Appendix..............................................
53
1.
Leak Check/Test Run.......
49
2.
2.
Electrical and Gas Leak Check................
49
54
Test Run..................................................................
50
Guidelines for Drilling the Wall Hole........................
3.
55
Simplified Wiring Diagram...............................................
4.
Control Board Wiring Diagrams..................................
56
5.
Additional Leakage Sensor Information................
57
6.
Disposal Guidelines...............................................................
58
7.
Notes from the Installer......................................................
59
1.
53
Anchoring the Outdoor Unit Guide
.........................
9
MC MC
1.
2.
Mounting Instructions...................................................................
40
3.
Outdoor Unit Installation Location Selection................
41
4.
5.
Connection of Refrigerant Piping..........................................
Electrical Wiring of the Outdoor Unit..................................
42
44
47
Evacuating the Refrigerant Circuit........................................
8
Outdoor Unit Installation...................
40
Page 4
This symbol indicates that ignoring the related instructions may cause death, or
serious injury.
This symbol indicates that ignoring the related instructions may cause moderate
injury to nearby persons, and/or damage to your appliance or other property.
WARNING
Safety Precautions
Read and Understand All Safety Precautions Prior to Installation
Improper installation due to negligence of instructions may result in death, property damage, or serious
injury. The magnitude of potential damages or injuries is classified as either a WARNING or a CAUTION.
CAUTION
DANGER
WARNING
Do not power the system using an extension cable or with wiring smaller than the specified gauge.
Do not share the electrical circuit with other appliances. Improper or insufficient power supply
can cause undesirable operation, fire, or electrical shock.
When connecting refrigerant piping, do not let any substances or gases other than the specified
refrigerant 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 also cause explosion and
injury, as well as permament equipment failure. Remember: No dust, humidity or air is allowed to enter.
Do not allow children to play with or around the air conditioner. Children near the unit must be
supervised at all times.
This symbol indicates that you must never perform the action shown.
1.
Installation must be performed by trained personnel according to applicable codes. Defective
installation can cause water leakage, electrical shock, or fire. The usage of proper tools is required.
2.
Installation must be performed according to the installation instructions. Improper installation can
cause water leakage, undesired performance, electrical shock, or fire.
(In North America, installation must be performed in accordance with the requirements of NEC and
CEC, by authorized personnel.)
3.
Contact a qualified and licensed HVAC technician for any repairs or maintenance of this unit.
4.
Only use the included accessories, parts, and specified items for installation. Using non-standard
parts can cause water leakage, electrical shock, fire, and can cause total unit failure.
5.
Install the unit on top of a firm structure that can fully support its weight. If the chosen location
cannot support the unit’s weight, or the installation is not done properly, the unit may fall and
cause serious injury and damage.
Page 5
6.
For all electrical work, follow all local and national wiring standards, regulations, and especially this
Installation Manual. You must use an independent circuit and a dedicated breaker to supply power.
Do not connect other appliances to the same circuit. Insufficient electrical capacity or defects in
electrical work can cause electrical shock or fire.
7.
9.
10.
11.
8.
CAUTION
For all electrical work, use the specified cables. Connect cables tightly, and clamp them securely to
prevent external forces from damaging the terminals. Improper electrical connections can overheat
and cause fire, and may also cause shock.
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 heat up, catch fire, or cause electrical shock.
In certain functional environments, such as kitchens, server rooms, etc., the use of specially designed
air-conditioning units is highly recommended. This is intended as a general comfort cooling system.
If part of the electrical wiring is damaged, it must be replaced by a certified service agent or similarly
qualified technicians, in order to avoid a hazard.
This appliance can be used by children aged 8 years and above, as well as persons with reduced
physical, sensory, or mental capabilities, or lack of experience or knowledge, if they have been given
supervision or instruction concerning use of the appliance in a safe way, and understand the hazards
involved. Children shall not play with or near the appliance. Cleaning and user maintenance shall
not be done or attempted by children or untrained personnel without proper supervision.
Note about Fluorinated Gasses
1.
The product must be properly grounded at the time of installation, else electrical shock may occur.
2.
Install drainage piping according to the instructions in this manual. Improper drainage may cause
water damage to your home and property.
WARNING
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 unit, it may cause fire.
Do not operate your air conditioner in a highly humid space, such as bathrooms or laundry rooms.
Exposure to high humidity or water can cause electrical components to short circuit.
1.
This air-conditioning unit contains fluorinated gasses. For specific information on the type of gas
and the amount, please refer to the relevant label on the unit itself.
2.
Installation, service, maintenance, and repair of this unit must be performed by qualifed and
well-trained personnel.
3.
Product removal and recycling must be performed by a certified HVAC technician.
4.
If the system has a leak-detection feature installed, it must be checked for its functionality at least
every 12 months.
5.
When the unit is being checked for leaks, proper logging and record-keeping of all checks is
strongly recommended.
Page 4
This symbol indicates that ignoring the related instructions may cause death, or
serious injury.
This symbol indicates that ignoring the related instructions may cause moderate
injury to nearby persons, and/or damage to your appliance or other property.
WARNING
Safety Precautions
Read and Understand All Safety Precautions Prior to Installation
Improper installation due to negligence of instructions may result in death, property damage, or serious
injury. The magnitude of potential damages or injuries is classified as either a WARNING or a CAUTION.
CAUTION
DANGER
WARNING
Do not power the system using an extension cable or with wiring smaller than the specified gauge.
Do not share the electrical circuit with other appliances. Improper or insufficient power supply
can cause undesirable operation, fire, or electrical shock.
When connecting refrigerant piping, do not let any substances or gases other than the specified
refrigerant 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 also cause explosion and
injury, as well as permament equipment failure. Remember: No dust, humidity or air is allowed to enter.
Do not allow children to play with or around the air conditioner. Children near the unit must be
supervised at all times.
This symbol indicates that you must never perform the action shown.
1.
Installation must be performed by trained personnel according to applicable codes. Defective
installation can cause water leakage, electrical shock, or fire. The usage of proper tools is required.
2.
Installation must be performed according to the installation instructions. Improper installation can
cause water leakage, undesired performance, electrical shock, or fire.
(In North America, installation must be performed in accordance with the requirements of NEC and
CEC, by authorized personnel.)
3.
Contact a qualified and licensed HVAC technician for any repairs or maintenance of this unit.
4.
Only use the included accessories, parts, and specified items for installation. Using non-standard
parts can cause water leakage, electrical shock, fire, and can cause total unit failure.
5.
Install the unit on top of a firm structure that can fully support its weight. If the chosen location
cannot support the unit’s weight, or the installation is not done properly, the unit may fall and
cause serious injury and damage.
Page 5
6.
For all electrical work, follow all local and national wiring standards, regulations, and especially this
Installation Manual. You must use an independent circuit and a dedicated breaker to supply power.
Do not connect other appliances to the same circuit. Insufficient electrical capacity or defects in
electrical work can cause electrical shock or fire.
7.
9.
10.
11.
8.
CAUTION
For all electrical work, use the specified cables. Connect cables tightly, and clamp them securely to
prevent external forces from damaging the terminals. Improper electrical connections can overheat
and cause fire, and may also cause shock.
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 heat up, catch fire, or cause electrical shock.
In certain functional environments, such as kitchens, server rooms, etc., the use of specially designed
air-conditioning units is highly recommended. This is intended as a general comfort cooling system.
If part of the electrical wiring is damaged, it must be replaced by a certified service agent or similarly
qualified technicians, in order to avoid a hazard.
This appliance can be used by children aged 8 years and above, as well as persons with reduced
physical, sensory, or mental capabilities, or lack of experience or knowledge, if they have been given
supervision or instruction concerning use of the appliance in a safe way, and understand the hazards
involved. Children shall not play with or near the appliance. Cleaning and user maintenance shall
not be done or attempted by children or untrained personnel without proper supervision.
Note about Fluorinated Gasses
1.
The product must be properly grounded at the time of installation, else electrical shock may occur.
2.
Install drainage piping according to the instructions in this manual. Improper drainage may cause
water damage to your home and property.
WARNING
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 unit, it may cause fire.
Do not operate your air conditioner in a highly humid space, such as bathrooms or laundry rooms.
Exposure to high humidity or water can cause electrical components to short circuit.
1.
This air-conditioning unit contains fluorinated gasses. For specific information on the type of gas
and the amount, please refer to the relevant label on the unit itself.
2.
Installation, service, maintenance, and repair of this unit must be performed by qualifed and
well-trained personnel.
3.
Product removal and recycling must be performed by a certified HVAC technician.
4.
If the system has a leak-detection feature installed, it must be checked for its functionality at least
every 12 months.
5.
When the unit is being checked for leaks, proper logging and record-keeping of all checks is
strongly recommended.
Page 6
1
System Components
High Wall-Mounted Air Conditioner:
Note: The illustrations above are only intended to be a simple diagram of the appliance, and may not fully
correspond to the actual appearance of the system. Technical data is printed on the system’s labels.
The system is made up of two units connected together via insulated copper pipes and an
electrical communication cable. The indoor unit is mounted onto one of the walls in the room
that is to be conditioned. The outdoor unit is installed on the ground outside or on the wall
of the dwelling using suitable mounting brackets.
Owner’s
Manual
No.
Description
1
2
3
4
5
Wall Mounting Plate
LED Display
Controller Signal Receiver
Front Panel
Indoor Unit Rating Label
6
7
8
9
10
Terminal Block Cover
Emergency (Manual) Button
Air Deflector and Flap
Air Outlet
Air Filter
No.
Description
11
12
13
15
16
Air Outlet Grille
Outdoor Unit Nameplate
Terminal Block Cover
Gas (Suction) Line Valve
14
Valve Protection Cover
Liquid Line Valve
Note: Serial Numbers are typically located behind the
electronic control box cover cap of either unit.
With the protective
cover removed
INDOOR UNIT
OUTDOOR UNIT
9
10
15
16
4 5
7
8
11
3
1
14
13
12
Refrigerant Piping
2
Condensate Drain
6
Page 6
1
System Components
High Wall-Mounted Air Conditioner:
Note: The illustrations above are only intended to be a simple diagram of the appliance, and may not fully
correspond to the actual appearance of the system. Technical data is printed on the system’s labels.
The system is made up of two units connected together via insulated copper pipes and an
electrical communication cable. The indoor unit is mounted onto one of the walls in the room
that is to be conditioned. The outdoor unit is installed on the ground outside or on the wall
of the dwelling using suitable mounting brackets.
Owner’s
Manual
No.
Description
1
2
3
4
5
Wall Mounting Plate
LED Display
Controller Signal Receiver
Front Panel
Indoor Unit Rating Label
6
7
8
9
10
Terminal Block Cover
Emergency (Manual) Button
Air Deflector and Flap
Air Outlet
Air Filter
No.
Description
11
12
13
15
16
Air Outlet Grille
Outdoor Unit Nameplate
Terminal Block Cover
Gas (Suction) Line Valve
14
Valve Protection Cover
Liquid Line Valve
Note: Serial Numbers are typically located behind the
electronic control box cover cap of either unit.
With the protective
cover removed
INDOOR UNIT
OUTDOOR UNIT
9
10
15
16
4 5
7
8
11
3
1
14
13
12
Refrigerant Piping
2
Condensate Drain
6
Page 7
2
Included Accessories
Communication/Signal Cable*
1x Installation and Owner’s Manual
1x
CS78421-548-754
SPLIT-TYPE ROOM AIR CONDITIONER
IMPORTANT NOTE:
e to save this manual for
or operating y
Read this manual car
our new air c
efully befor
onditioning
e installing
Installation and
Owner’s Manual
future
unit. Make su
referenc
r
e.
Name
Appearance
Insulated Copper Pipe*1x
Remote Controller1x
Remote Controller Holder1x
Remote Controller Batteries2x
1x Warranty Card
1x
(Pre-attached to air handler rear)
Indoor Unit Mounting Plate
1x Condensate Drain Hose*
Name
Appearance
Wrapping Tape*1x
Wall-Hole Packing Sealant*1x
Wall Sleeve*1x
Allen Wrench for Opening
Service Valves
1x
1x Set of Mounting Plate Screws
1x
Plastic Drain Joint Plug for
Outdoor Unit (use only for
wall-mounted condensers)
Connecting Pipe Diameters
18000
9000 - 12000
24000
BTU Capacity
Liquid Line
Gas Line
1/4”3/8”
1/2” 1/4”
5/8” 1/4”
Accessories and Components:
The air conditioning system comes with the following accessories (the asterisk items are sold
separately). Use all of the installation parts/accessories to install the air conditioner. Improper
installation may cause the equipment to fail, or result in water leakage, electrical shock, or fire.
t
1.
o t
Unless this high quality product is registered properly as soon as it is put in service, all references made in this document to the term “warranty” solely refer
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d. Warranty Coverage: The warranty covers the parts of the Products, which ma
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registration card packed with the Product and send it in as instructed in the form OR conveniently register online at www.pdhvac.com and use the
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vi. Da
vii. Chan
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viii. Resetting of power or the circuit breakers and replacement of other types of fuses, both internal and ext
t
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al.
ix. Any damages of repairs caused by the use of dirty, recycled, wrong type or unapproved refrigerants and lubrica
x. Damages or repairs due to moisture, air, dust, sand, dirt, etc., that have been allowed into the system by imprope
n
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s.
an
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xi.
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tinuing use the Product, after a malfunction has been noticed or indicated at the display module,
xii.
ou
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man
f. Warranty Begin Date: War
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LIMITED PARTS WARRANTY
Pioneer® Brand Split System Heat Pump Products
© 2025, PARKER DAVIS HVAC INTERNATIONAL INC.
for
anty. The Basic Warranty lasts
a period of up to one year. Products that have been properly registered as instructed above will be covered under Standard Warranty. The
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placement of any
t that has been determined to have failed, by PD at its sole discretion, due to defects in its materials or workmanship under standard use and
proper maintenance. Associated shipping costs for the replacement parts may also be covered at PD’s expense, at its own discretion and under
certain conditions, while the shipping method used will be solely determined by PD. Otherwise, the payment of the
shipping costs for the part will be
the sole responsibility of the owner of the Product. PD reserves the right to ask the owner of the Product to return the failed part to PD, before
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placement of the defective part, remain the responsibility of the owner. No other costs, involved in diagnosis, lodging, transportation, servicing, repair,
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efrigerant, and the cost of the refrigerant itself, are not
vered under any circumstances. All Products go through vigorous quality controls at various stations and leave the factory in perfect working
and sealed condition. Products are individually tested in highly sensitive helium vacuum chambers for existence of refrigerant leaks. Therefore PD
does not cover any claims related to the lack of refrigerant in new Products, discovered upon arrival, or during installation, as well as subsequent
refrigerant losses occurring at any time afterward
*Items with an asterisk may be sold separately and are sometimes supplied by the installer. Therefore, some items
may differ in appearance, shape, or length, depending on what was chosen to be used for the particular installation.
Owner’s
Manual
Page 8
Indoor Unit Overview
3
2
3
1
No.
Description
SymbolLED Icon
1
2
3
SLEEP
TIMER
Temp. Display
Indicates that the system is currently in SLEEP mode
Indicates that the TIMER function has been set
Displays the current set temperature or any error codes
Front Panel Display
The shape and position of switches and indicators may vary according to the model, however the functions remain the same.
There may be variances between the amount of digits that are shown on the remote (3) vs. the amount on the indoor unit (2).
It is imperative that the front panel is not obstructed, otherwise it may not be able to receive infrared commands from the remote.
As such, ensure that the panel is not covered with paint or adhesive layers, and that there are no nearby signal emitting devices.
Emergency
Emergency Manual Button And Auto-Restart Function
Button
Front Panel
Emergency Manual Button
If the remote controller fails to operate the system, proceed as follows:
Auto-Restart Feature
• Open and lift the front panel up at an angle to gain access to the
emergency button.
• Press the manual button once to start the unit in COOL mode.
• Press the button again within 3 seconds to start the unit in HEAT mode.
• Press a 3rd time within 5 seconds to turn OFF the unit.
This appliance is programmed with an auto-restart function.
In case of sudden power failure, the control module will remember the
settings configured before power loss.
When power is restored, the unit will restart automatically, and will be
set to the previous settings, which were preserved with this memory
function.
The emergency button is located at
the terminal block cover of the unit
under the front panel.
Owner’s
Manual
Page 8
Indoor Unit Overview
3
2
3
1
No.
Description
SymbolLED Icon
1
2
3
SLEEP
TIMER
Temp. Display
Indicates that the system is currently in SLEEP mode
Indicates that the TIMER function has been set
Displays the current set temperature or any error codes
Front Panel Display
The shape and position of switches and indicators may vary according to the model, however the functions remain the same.
There may be variances between the amount of digits that are shown on the remote (3) vs. the amount on the indoor unit (2).
It is imperative that the front panel is not obstructed, otherwise it may not be able to receive infrared commands from the remote.
As such, ensure that the panel is not covered with paint or adhesive layers, and that there are no nearby signal emitting devices.
Emergency
Emergency Manual Button And Auto-Restart Function
Button
Front Panel
Emergency Manual Button
If the remote controller fails to operate the system, proceed as follows:
Auto-Restart Feature
• Open and lift the front panel up at an angle to gain access to the
emergency button.
• Press the manual button once to start the unit in COOL mode.
• Press the button again within 3 seconds to start the unit in HEAT mode.
• Press a 3rd time within 5 seconds to turn OFF the unit.
This appliance is programmed with an auto-restart function.
In case of sudden power failure, the control module will remember the
settings configured before power loss.
When power is restored, the unit will restart automatically, and will be
set to the previous settings, which were preserved with this memory
function.
The emergency button is located at
the terminal block cover of the unit
under the front panel.
Owner’s
Manual
Page 9
Operating Instructions
4
Remote Buttons Overview
The display and some features of the remote control may
vary according to the model of the system.
The shape and positions of the buttons and indicators may
vary according to the model of the system, but the features
and functionality would remain the same.
The unit will confirm the successful reception of each button
command with a beep.
Button Description
Turns the air conditioner on or off
Activates/deactivates the ECO feature
Configures the automatic on/off times
Toggles the system’s Sleep Mode
Activates the up-down louver motor
Turns the LED display on or off
Activates the left-right louver motor
Puts the system into silent mode
Hold MODE+TIMER for child-lock
Activates the system’s Follow Me mode
Increases set temperature, set timing,
or navigates the functional menu
Decreases set temperature, set timing,
or navigates the functional menu
Long press to activate the 46°F “Away
from Home” freeze protection setting.
Selects the mode of operation (Auto,
Cool, Dry, Fan, and Heat modes)
Configures the fan speed
(Auto, Low, Mid, and High)
MODE
Activates/deactivates the TURBO
feature, which allows the system to
reach set temperatures more rapidly
DISPLAY
MUTE
[LOCK]
To activate/deactivate Self-Clean mode
CLEAN
To recall saved temp/mode/fan settings
MEMORY
Reserved for Future UsageACC
I FEEL
TURBO
TIMER
FAN
SLEEP
ECO
Owner’s
Manual
Page 10
4
NOTE ON ILLUSTRATIONS
Operating Instructions
The illustrations in this manual are strictly for explanatory purposes. The actual display and some
functions of the remote controller may vary according to the model purchased.
No. DescriptionIcon
10
3
4
5
6
Auto Mode
Cooling Mode
Signal Transmit Indicator
Dry Mode
Fan Only Mode
7
8
9
Heating Mode
ECO Mode
Self-Clean Function
Remote Controller LED Screen and Icons
Unit of Temperature (°C/°F)
No. DescriptionIcon
2
1
12
11
Temperature Indicator
Battery Level Indicator
Mute Function
Turbo Mode
Child Lock Indicator
15
16
18
17
13
14
21
22
19
20
Up-Down Swing Indicator
Left-Right Swing Indicator
Timer Active Indicator
LED Display On/Off
Sleep Function
8°C (46°F) Heating Function
I Feel/Follow Me Mode
Fan Speed (Auto or Fixed)
4 5
6 7 8
16
1518
1
20
21
22
2
3
9
10
12
14
13
11
17
19
Owner’s
Manual
Page 11
Configuring Remote Controller Settings (some models)
Depending on the system, the control type (Cooling Only or Heat Pump) and the unit of
Temperature (°C or °F) can be configured using the controller buttons. Operate as below.
All configuration must be done as soon as batteries are inserted into the remote.
Replacement of Batteries
Remove the battery cover from the rear of the remote controller, by sliding it downward in
the direction of the arrow as depicted below. Install batteries according to the depicted
directions (+ and -) as shown on the remote controlller. The cover then slides back into place.
Note
Please remove batteries to avoid
leakage damage when not
being used for a long time.
Note
The remote can be placed
inside the cradle when not in
use (may be sold separately).
Use 2x AAA batteries. Do not use re-chargeable batteries. Replace old batteries with new ones of the same type when the
display is no longer legible. Do not dispose of batteries as unsorted municipal waste. Disposal of such waste separately
for special treatment is necessary. If the system will not be used for a long time, remove batteries to prevent leakage.
Signal
receptor
DI
SPLAY
3D
HEALTH
Y
ON/O
FF
SWI
NG
FAN
TI
M
ER
SU
PE
R
SL
EE
P
M
OD
E
EC
O
CLOC
K
Operating the Remote Controller Sucessfully and Safely
• Ensure no objects come between the remote controller and signal
Remove batteries and re-insert to reprogram as many times as needed.
• Keep the remote at least 3 ft away from televisions and other
electrical appliances.
• Always direct the remote controller toward the air conditioner.
• Don’t leave the remote exposed to sunrays.
After 5 seconds, enter Switch State
MODE
Press and Hold:
MODE
TURBO
TURBO (press)
Functional Result
When flashes, Cooling Only Mode
When flashes, Heat & Cool Mode
Switch between °C and °F units
Operating Instructions
4
Owner’s
Manual
Page 11
Configuring Remote Controller Settings (some models)
Depending on the system, the control type (Cooling Only or Heat Pump) and the unit of
Temperature (°C or °F) can be configured using the controller buttons. Operate as below.
All configuration must be done as soon as batteries are inserted into the remote.
Replacement of Batteries
Remove the battery cover from the rear of the remote controller, by sliding it downward in
the direction of the arrow as depicted below. Install batteries according to the depicted
directions (+ and -) as shown on the remote controlller. The cover then slides back into place.
Note
Please remove batteries to avoid
leakage damage when not
being used for a long time.
Note
The remote can be placed
inside the cradle when not in
use (may be sold separately).
Use 2x AAA batteries. Do not use re-chargeable batteries. Replace old batteries with new ones of the same type when the
display is no longer legible. Do not dispose of batteries as unsorted municipal waste. Disposal of such waste separately
for special treatment is necessary. If the system will not be used for a long time, remove batteries to prevent leakage.
Signal
receptor
DI
SPLAY
3D
HEALTH
Y
ON/O
FF
SWI
NG
FAN
TI
M
ER
SU
PE
R
SL
EE
P
M
OD
E
EC
O
CLOC
K
Operating the Remote Controller Sucessfully and Safely
• Ensure no objects come between the remote controller and signal
Remove batteries and re-insert to reprogram as many times as needed.
• Keep the remote at least 3 ft away from televisions and other
electrical appliances.
• Always direct the remote controller toward the air conditioner.
• Don’t leave the remote exposed to sunrays.
After 5 seconds, enter Switch State
MODE
Press and Hold:
MODE
TURBO
TURBO (press)
Functional Result
When flashes, Cooling Only Mode
When flashes, Heat & Cool Mode
Switch between °C and °F units
Operating Instructions
4
Owner’s
Manual
Page 12
4
Operating Instructions
CAUTION
2. If the vertical deflectors (which are located
underneath the flaps) are adjusted manually,
they can be used to fix the airflow in a certain
vertical position before turning the system on.
Regarding the Airflow of the Indoor Unit
The air that is pulled in by the fan (the “return air”) enters the
grille and is passed through the filter. It is then
cooled/dehumidified/heated through the heat exchanger.
The direction of the air output is manipulated up and down by the
motorized louver, and left to right via manually controlled vertical
deflectors. Some models may come with “dual-swing” capability,
which offers both a horizontal and vertical motorized air flow swing.
Controlling the System’s Airflow
1. Pressing the buttons activates the air direction adjusters.
• Press the Swing button to trigger the horizontal
flaps to swing up and down. Press this button again
to stop swing movement at the current angle.
• Press the Swing button to trigger the vertical
flaps to swing left and right. Press this button again
to stop swing movement at the current angle.
Filter
Heat
Fan
• Do not manipulate the louvers themselves
manually, or serious damage may occur.
• Deflector adjustments should be made
only when the system is switched off.
• Never poke fingers, sticks, or other
objects into the air inlet/outlet vents.
Flaps
Horizontal
Flap
Movement
Deflectors
Vertical
Note: On some models, long-pressing either of the SWING buttons
for >3 seconds allows more fine adjustment of airflow angle.
Owner’s
Manual
Page 12
4
Operating Instructions
CAUTION
2. If the vertical deflectors (which are located
underneath the flaps) are adjusted manually,
they can be used to fix the airflow in a certain
vertical position before turning the system on.
Regarding the Airflow of the Indoor Unit
The air that is pulled in by the fan (the “return air”) enters the
grille and is passed through the filter. It is then
cooled/dehumidified/heated through the heat exchanger.
The direction of the air output is manipulated up and down by the
motorized louver, and left to right via manually controlled vertical
deflectors. Some models may come with “dual-swing” capability,
which offers both a horizontal and vertical motorized air flow swing.
Controlling the System’s Airflow
1. Pressing the buttons activates the air direction adjusters.
• Press the Swing button to trigger the horizontal
flaps to swing up and down. Press this button again
to stop swing movement at the current angle.
• Press the Swing button to trigger the vertical
flaps to swing left and right. Press this button again
to stop swing movement at the current angle.
Filter
Heat
Fan
• Do not manipulate the louvers themselves
manually, or serious damage may occur.
• Deflector adjustments should be made
only when the system is switched off.
• Never poke fingers, sticks, or other
objects into the air inlet/outlet vents.
Flaps
Horizontal
Flap
Movement
Deflectors
Vertical
Note: On some models, long-pressing either of the SWING buttons
for >3 seconds allows more fine adjustment of airflow angle.
Owner’s
Manual
Page 13
press the button until the symbol
COOLING Mode
Cooling mode allows the heat pump
to cool the room while also reducing
the humidity of the air in the room.
To put the system into cooling mode,
4
Operating Instructions
press the button until the symbol
appears on the remote’s display.
The and buttons can then be used to
set a temperature lower than that of the room.
HEATING Mode
Heating mode allows the heat pump to warm
the air in the room by reversing the cooling cycle.
To put the system into heating mode,
appears on the remote’s display.
The and buttons can then be used to
set a temperature higher than that of the room.
Note that the system may take up to 10 minutes
before it begins delivering heat in order to allow
for the coil to warm up and prevent cold airflow.
Fan speed is not available to the user in the same
way that it is in cooling mode. Rather, the fan will
blow out air at a speed that is in proportion to how
much the heat exchanger has been warmed up to.
NOTE
In heating mode, the appliance will periodically enter a defrost cycle, which is essential in order to clean frosting
off the condenser and recover heat exchange capability. This process is normal and lasts for 2-10 minutes.
During defrosting, the indoor unit’s fan will cease operation. After the cycle is completed, the system will resume
its normal heat mode operation automatically. Press ECO 10 times within 8 seconds to trigger a forced defrost.
Owner’s
Manual
Page 14
symbol appears on the
DRY Mode
Dry mode is a limited function that can rapidly
reduce the humidity/moisture of the room.
To put the system into dry mode, press the
button until the
remote’s display.
4
Operating Instructions
Use the
speed. The system will cycle from AUTO→MUTE→
LOW→LOW-MID→MID→MID-HIGH→HIGH→TURBO
button to then set the desired fan
An automatic preset of this mode is then activated.
FAN-ONLY Mode
Fan-only mode is used to set the system to use
only air ventilation and no heating or cooling.
To put the system into fan-only mode, press
the button until the symbol
appears on the remote’s display.
AUTO Mode
In Auto mode, the system selects cooling, heating, or
fan-only mode based on the delta-T (△T), which is the
difference between Room Temperature & Set Temperature.
→MODE
△T (RT-ST)
△T>2°F △T<2°F
Cooling Heating
-2°F ≤ △T ≤ 2°F
Fan-Only
To put the system into AUTO mode, press the
button until the symbol appears on the
remote’s display.
The and buttons can
then be used to set the desired room temperature.
(Flash)
Owner’s
Manual
Page 15
Turning the Display On or Off
4
Operating Instructions
button, and the
Press this button again to exit from this mode.
symbol will appear on the display.
The LED display on the front panel of the
system can be turned on or off as desired.
To do so, press the button in order to
switch off the LED display on the front panel.
This button can be pressed again to turn the
LED display back on again.
SLEEP Mode
Sleep mode is generally meant for periods of lesser
cooling/heating requirements, such as during typical
sleeping hours. This mode will result in decreased
energy use, and can only be activated via remote control.
After 10 hours in sleep mode, the air conditioner will
revert back to the previously set mode.
To put the system into sleep mode, press the
button, and the icon will appear on the display.
I FEEL - To Ensure Comfort
The I FEEL feature enables the remote to act as
the temperature sensor and relay the current air
temperature of where the remote is physically
placed within the room. In some cases, this can
aid with reducing thermal drift between the set
temperature and the actual room temperature.
In order to activate this feature, press the
NOTE
The I FEEL feature will automatically de-activate
itself 8 hours later (or 2 hours on some models).
Owner’s
Manual
Page 14
symbol appears on the
DRY Mode
Dry mode is a limited function that can rapidly
reduce the humidity/moisture of the room.
To put the system into dry mode, press the
button until the
remote’s display.
4
Operating Instructions
Use the
speed. The system will cycle from AUTO→MUTE→
LOW→LOW-MID→MID→MID-HIGH→HIGH→TURBO
button to then set the desired fan
An automatic preset of this mode is then activated.
FAN-ONLY Mode
Fan-only mode is used to set the system to use
only air ventilation and no heating or cooling.
To put the system into fan-only mode, press
the button until the symbol
appears on the remote’s display.
AUTO Mode
In Auto mode, the system selects cooling, heating, or
fan-only mode based on the delta-T (△T), which is the
difference between Room Temperature & Set Temperature.
→MODE
△T (RT-ST)
△T>2°F △T<2°F
Cooling Heating
-2°F ≤ △T ≤ 2°F
Fan-Only
To put the system into AUTO mode, press the
button until the symbol appears on the
remote’s display.
The and buttons can
then be used to set the desired room temperature.
(Flash)
Owner’s
Manual
Page 15
Turning the Display On or Off
4
Operating Instructions
button, and the
Press this button again to exit from this mode.
symbol will appear on the display.
The LED display on the front panel of the
system can be turned on or off as desired.
To do so, press the button in order to
switch off the LED display on the front panel.
This button can be pressed again to turn the
LED display back on again.
SLEEP Mode
Sleep mode is generally meant for periods of lesser
cooling/heating requirements, such as during typical
sleeping hours. This mode will result in decreased
energy use, and can only be activated via remote control.
After 10 hours in sleep mode, the air conditioner will
revert back to the previously set mode.
To put the system into sleep mode, press the
button, and the icon will appear on the display.
I FEEL - To Ensure Comfort
The I FEEL feature enables the remote to act as
the temperature sensor and relay the current air
temperature of where the remote is physically
placed within the room. In some cases, this can
aid with reducing thermal drift between the set
temperature and the actual room temperature.
In order to activate this feature, press the
NOTE
The I FEEL feature will automatically de-activate
itself 8 hours later (or 2 hours on some models).
Owner’s
Manual
Page 16
4
Operating Instructions
Energy Saver (ECO) Option
In this mode, the appliance will automatically
manage its operation in order to save energy.
To turn the ECO feature on, press the
button on the remote, and the icon will
appear. The system is now running in ECO,
and the process can be repeated to turn it off.
NOTE
The ECO feature is available in both COOLING
and HEATING modes.
button will be active.
Press the and buttons together once more
to de-activate the child-lock function.
TURBO Option
In this mode, the appliance will operate using the
highest fan speed in order to maximize output
and reach the set temperature in the quickest way.
To turn the TURBO feature on, press the
button on the remote, and the icon will
appear. The system is now running in TURBO,
and the process can be repeated to turn it off.
Child-Lock Function
Pressing and buttons together will acti-
vate the child-lock function. When this function is
active, the icon will be displayed, and no single
Owner’s
Manual
Page 17
NOTE Regarding Timers
• Press the button to cancel
at any time in Timer Off.
Using the Timer - TIMER ON
• The programming will cancel
if no buttons are pressed after
5 seconds. This may require
restarting the process.
1. Begin by pressing the button while the
The TIMER feature allows you to set a time delay for
the system to turn itself on or off.
To set a time delay for the system to turn itself on in X
amount of hours:
2. Use the Temp and
3.
system is powered off. The symbol will
then
display flashing. The default setting is 6.0 hours.
buttons to set the
4.
5. Set the desired fan speed that the unit should
6.
start up in by pressing the button.
Use the and buttons to set the desired
operation temperature. The unit is now primed.
needed time delay in 30 minute increments.
Press the button a second time to confirm.
Press the button to select the desired
operating mode that the unit should start up in.
2. Press the button to enter the prompt for
switching off the system. Use the and
also be pressed once more to cancel the setting.
buttons to configure the time delay setting.
3. Press the button again to confirm. It can
4
Operating Instructions
Using the Timer - TIMER OFF
The TIMER OFF feature allows the appliance to
turn itself off after X amount of hours have passed.
The symbol will appear. To set a time delay for
the system to turn itself off in X amount of hours:
1. Confirm that the appliance is on and running.
Owner’s
Manual
Page 18
4
Operating Instructions
46°F Freeze Protection Function
Press and hold the
button for 3 seconds to
Press the
The
muted.
button in order to activate this mode.
icon will display to indicate that the system is
activate this feature. Repeat this to de-activate.
Once activated, 46°F (8°C) will appear on the display.
MUTE Mode
When the system is muted, the remote controller will
display AUTO fan speed, and the indoor unit will
operate at its lowest fan speed in order to
minimize operation noise.
This feature is meant to be used to prevent
freezing while the user is away from home. When
turned on, it sets the system to keep a temperature
of 46°F. If the unit is in standby, then the setting
will automatically start the heating mode when the
room temperature is equal to or lower than 46°F.
It will set the system back to standby when the
room temperature reaches 48°F.
If the room temperature is ever 64°F or higher,
then the appliance will cancel or prevent this
feature automatically.
For 3 seconds...
This mode can be cancelled by pressing either the
FAN, TURBO, or SLEEP buttons.
NOTE
The MUTE feature cannot be activated when the
system is in DRY mode.
Owner’s
Manual
Page 19
SELF-CLEAN Feature
MEMORY Feature
The Memory feature enables the user to store their
favorite setting and reconfigure the system to that
same setting with the press of a single button. Each
mode of HEAT/COOL/FAN/DRY can store a unique setting.
To use this feature, enter the desired mode and set the
system to your preferred configuration and press and
hold the button for 3 seconds to store the
configuration. The system will flash “AU” to acknowledge
that the configuration has been stored successfully.
Enter the desired mode of HEAT/COOL/FAN/DRY and
press the button to activate the stored configuration.
The button can be pressed to cancel this feature
This feature helps carry away some of the accumulated
dust, dirt, bacteria, and other microbial contents away
from the indoor evaporator.
To activate this feature, press the button
until a beep is heard from the unit, the icon displays
and AC will be displayed on the unit and remote.
This procedure will run for approximately 30
minutes, before returning to the preset mode.
4
Operating Instructions
during the process. Two beeps will be emitted from
the machine when it is finished, or cancelled.
This procedure can result in some uncommon noise
coming from the machine. This noise is normal as a
side effect of the plastics expanding and contracting
due to reactions with heat and cold.
It is recommended to use this function only when
indoor temperature is under 86°F and outside
temperature is between 41°F and 86°F.
It is suggested to run this feature once every 3 months.
Owner’s
Manual
NOTE:
This feature does not replace the requirement of
proper periodic maintenance and cleaning,
especially for dusty/high-particle environments.
Page 20
NOTE
4
After stopping and restarting the air conditioner, or after the mode is changed during operation, the system does
not restart immediately, and will come on when three minutes have elapsed (as a protection for the compressor).
Operating Instructions
An Important Note Regarding Operating Temperatures
The system is designed to run within a certain range of temperatures, which are listed below.
There are built-in protections with the system that may stop the appliance when the ambient
temperatures goes outside of these ranges.
Inverter Air Conditioner
To further optimize the performance of your unit, be sure to 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.
• Regularly inspect and clean air filters.
Full system-rated capacity and efficiency is obtained at the standard rating conditions as developed by
the testing and rating agencies. Deviations from the rating conditions, especially the atmospheric
conditions, will be compensated by the variable speed compressor, within certain limitations.
Heat pump systems function by exchanging energy, in the form of heat, between the indoor air and
the outdoor ambient air (atmospheric). The system’s net cooling or heating capacities and efficiencies
change by atmospheric conditions, as well as the indoor air conditions (such as temperatures and
humidity levels).
Capacity of the system required for a specific area or application must be determined professionally
using detailed calculations, which are based on several internal and external factors.
Owner’s
Manual
Operating
Temperature
Mode
Operational Room
Temperature Range
Remote Control Setting Range
Ambient Outdoor Temperature
COOLING Mode
63°F - 90°F
61°F - 88°F
5°F - 122°F -22°F - 86°F
5°F - 122°F
32°F - 80°F
HEATING Mode
63°F - 90°F
DRYING Mode
Page 21
Any accessorial electrostatic or deodorizing
filters, if installed, are not washable and
should be replaced once every 6 months.
Interior of the Indoor Air Handler
In addition to the filters, the interior of the indoor unit itself as well as the inner coil should be
inspected every season. The front panel can be disconnected and removed from the top hinge
where the pegs connect. This will allow for easier inspection of the interior and behind the air
filters. The interior should be cleaned with damp cloth and neutral soaps. Do not use any sort
of aggressive solvents or detergents. Only a soft cloth that is lightly dampened should be used.
Periodic Maintenance Is Essential For The System!
Maintaining the air conditioner will ensure that is stays efficient. Before carrying out any sort
of maintenance, always ensure that the power supply to the system is turned off for >5 minutes.
Wear safety gloves when working on the equipment, due to sharp aluminum fin edges of the coil.
Indoor Unit
Anti-Dust Filters (Inspect once every 2 weeks)
5
Maintenance of the Air Conditioner
1. Approach the interior unit to reach the top
area, and grasp both the exposed handles.
2. Gently remove the single anti-dust filter by
pulling upwards and backwards as depicted.
3. The filters are washable and should be
cleaned with warm water (under 113°F).
4. Leave the filters to dry in a cool, dry place.
5. Afterwards, re-insert the filter into the same
location after it has sufficiently dried.
BEFORE CLEANING OR MAINTENANCE
ALWAYS TURN OFF YOUR AIR CONDITIONER SYSTEM AND DISCONNECT ITS POWER SUPPLY
BEFORE PERFORMNG CLEANING OR MAINTENANCE. DO NOT SPRAY WATER DIRECTLY NEAR
THE INDOOR UNIT, AS IT CAN DAMAGE INSULATION AND ELECTRICAL COMPONENTS.
Maintenance
Instructions
Handles
Anti-Dust Filter
+
Louver
Deflector Assembly
Bottom Plate
Wash with room
temperature water
Page 21
Any accessorial electrostatic or deodorizing
filters, if installed, are not washable and
should be replaced once every 6 months.
Interior of the Indoor Air Handler
In addition to the filters, the interior of the indoor unit itself as well as the inner coil should be
inspected every season. The front panel can be disconnected and removed from the top hinge
where the pegs connect. This will allow for easier inspection of the interior and behind the air
filters. The interior should be cleaned with damp cloth and neutral soaps. Do not use any sort
of aggressive solvents or detergents. Only a soft cloth that is lightly dampened should be used.
Periodic Maintenance Is Essential For The System!
Maintaining the air conditioner will ensure that is stays efficient. Before carrying out any sort
of maintenance, always ensure that the power supply to the system is turned off for >5 minutes.
Wear safety gloves when working on the equipment, due to sharp aluminum fin edges of the coil.
Indoor Unit
Anti-Dust Filters (Inspect once every 2 weeks)
5
Maintenance of the Air Conditioner
1. Approach the interior unit to reach the top
area, and grasp both the exposed handles.
2. Gently remove the single anti-dust filter by
pulling upwards and backwards as depicted.
3. The filters are washable and should be
cleaned with warm water (under 113°F).
4. Leave the filters to dry in a cool, dry place.
5. Afterwards, re-insert the filter into the same
location after it has sufficiently dried.
BEFORE CLEANING OR MAINTENANCE
ALWAYS TURN OFF YOUR AIR CONDITIONER SYSTEM AND DISCONNECT ITS POWER SUPPLY
BEFORE PERFORMNG CLEANING OR MAINTENANCE. DO NOT SPRAY WATER DIRECTLY NEAR
THE INDOOR UNIT, AS IT CAN DAMAGE INSULATION AND ELECTRICAL COMPONENTS.
Maintenance
Instructions
Handles
Anti-Dust Filter
+
Louver
Deflector Assembly
Bottom Plate
Wash with room
temperature water
Page 22
Safety
Information
6
Considerations for A2L Refrigerants
Safety Information for A2L Refrigerants
Because your system contains R-454B refrigerant, the following notices should be read and followed.
It must be noted that venting any type of refrigerant into the atmosphere is always illegal and is
punishable under federal and local regulations. Always read and obey all applicable local EPA laws.
▪ Refer to this manual for the required
installation space dimensions, including
the minimum clearance distances from
adjacent structures.
▪ The appliance must be installed, operated,
and stored in a room with a floor area of at
least the minimum allowed (see Page 31).
▪ The length of the refrigerant piping should
be kept to a minimum.
▪ The refrigerant piping must be protected
from physical damage and should not be
installed in an unventilated space if the area
of the space is smaller than the minimum.
▪ Installation must comply with all applicable
national refrigerant regulations.
▪ All mechanical connections must remain
accessible for maintenance.
▪ Follow the instructions in this manual for
proper handling, installation, cleaning,
maintenance, and disposal of the
refrigerant.
▪ Ensure that all ventilation openings remain
unobstructed.
Any individual working on a refrigerant circuit
must hold a valid, up-to-date certification from
an industry-accredited assessment authority,
verifying their competence in handling
refrigerants per the recognized assessment
specifications of the relevant industrial sector.
Service operations must be performed strictly
in accordance with the manufacturer's
recommendations. Maintenance and repair
tasks requiring assistance from additional
qualified personnel must be conducted under
the supervision of a certified professional
competent in handling flammable refrigerants.
Servicing must be performed only in accordance
with the manufacturer's recommendations.
The appliance must be stored in a well-ventilated
area with a room size that meets the minimum
requirements specified for operation.
The appliance must be stored in a room free of
continuously operating open flames (e.g., an
active gas appliance) and ignition sources
(e.g., an operating electric heater).
Page 22
Safety
Information
6
Considerations for A2L Refrigerants
Safety Information for A2L Refrigerants
Because your system contains R-454B refrigerant, the following notices should be read and followed.
It must be noted that venting any type of refrigerant into the atmosphere is always illegal and is
punishable under federal and local regulations. Always read and obey all applicable local EPA laws.
▪ Refer to this manual for the required
installation space dimensions, including
the minimum clearance distances from
adjacent structures.
▪ The appliance must be installed, operated,
and stored in a room with a floor area of at
least the minimum allowed (see Page 31).
▪ The length of the refrigerant piping should
be kept to a minimum.
▪ The refrigerant piping must be protected
from physical damage and should not be
installed in an unventilated space if the area
of the space is smaller than the minimum.
▪ Installation must comply with all applicable
national refrigerant regulations.
▪ All mechanical connections must remain
accessible for maintenance.
▪ Follow the instructions in this manual for
proper handling, installation, cleaning,
maintenance, and disposal of the
refrigerant.
▪ Ensure that all ventilation openings remain
unobstructed.
Any individual working on a refrigerant circuit
must hold a valid, up-to-date certification from
an industry-accredited assessment authority,
verifying their competence in handling
refrigerants per the recognized assessment
specifications of the relevant industrial sector.
Service operations must be performed strictly
in accordance with the manufacturer's
recommendations. Maintenance and repair
tasks requiring assistance from additional
qualified personnel must be conducted under
the supervision of a certified professional
competent in handling flammable refrigerants.
Servicing must be performed only in accordance
with the manufacturer's recommendations.
The appliance must be stored in a well-ventilated
area with a room size that meets the minimum
requirements specified for operation.
The appliance must be stored in a room free of
continuously operating open flames (e.g., an
active gas appliance) and ignition sources
(e.g., an operating electric heater).
Page 23
6
Considerations for A2L Refrigerants
Servicing Information for A2L Refrigerants
▪ The appliance must be stored in a manner
that prevents mechanical damage.
▪ Any work procedure affecting safety
measures must be carried out exclusively
by competent personnel.
▪ Area Inspection: Before servicing
systems containing flammable refrigerants,
safety checks must be performed to
minimize the risk of ignition. When
repairing the refrigeration system, all
following precautions must be observed
before beginning any work.
▪ Work Procedure: All work must be
conducted under a controlled process to
minimize the risk of flammable gas or vapor
being present during servicing.
▪ General Work Area:
◦ All maintenance personnel and individuals
in the vicinity must be informed about the
nature of the work being performed.
◦ Avoid working in confined spaces
whenever possible.
◦ The work area must be sectioned off to
prevent unauthorized access.
▪ Area Ventilation: Ensure the area is free
from flammable materials and that conditions
are controlled to maintain a safe working
environment
▪ Checking for Refrigerant Presence:
◦ The work area must be monitored for
refrigerant leaks using an appropriate
refrigerant detector before and during
servicing.
◦ Ensure the leak detection equipment used
is suitable for flammable refrigerants (i.e.,
non-sparking, adequately sealed, or
intrinsically safe).
▪ Presence of Fire Extinguisher: If any hot
work is to be performed on the refrigeration
equipment or its associated components,
appropriate fire extinguishing equipment
must be readily available. A dry powder or
CO
2
fire extinguisher should be positioned
adjacent to the charging area.
▪ Elimination of Ignition Sources:
◦ Any work involving the exposure of
refrigeration system piping must be
conducted without the use of ignition
sources that could pose a fire or explosion
risk.
◦ All potential ignition sources, including
smoking, must be kept at a safe distance
from the installation, repair, removal, and
disposal areas, where refrigerant may be
unintentionally released into the surrounding
space.
◦ Before commencing work, the area must be
inspected to ensure that no flammable
hazards or ignition risks are present.
◦ "No Smoking" signs must be clearly
displayed in the work area.
◦ Do not attempt to accelerate the defrosting
process or remove frost manually.
◦ Follow the manufacturer's recommended
procedures.
◦ The appliance must be stored in a room
free of continuously operating ignition
sources (e.g., open flames, an active gas
appliance, or an operating electric heater).
◦ Do not pierce or incinerate the appliance or
its components.
◦ Be aware that refrigerants may be odorless.
Warning
Safety
Information
Page 24
Safety
Information
6
Considerations for A2L Refrigerants
▪ Ventilated Area:
◦ Ensure that work is conducted either in an
open area or in a space with adequate
ventilation before breaking into the system
or performing any heat-producing tasks.
◦ Ventilation must be maintained throughout
the duration of the work.
◦ The ventilation system should effectively
disperse any released refrigerant and, if
possible, direct it safely to an external
atmosphere.
▪ Inspection of Refrigeration
Equipment:
◦ When replacing electrical components,
ensure that they meet the correct
specifications and are suitable for their
intended purpose.
◦ Always adhere to the manufacturer's
maintenance and service guidelines.
◦ If unsure, consult the manufacturer’s
technical support department for guidance.
▪ Checks for Installations Using
Flammable Refrigerants: The following
inspections must be performed for systems
utilizing flammable refrigerants:
◦ Ensure that the refrigerant charge size
complies with the minimum room size
requirements where refrigerant-containing
components are installed.
◦ Verify that ventilation equipment and
exhaust outlets are functioning properly
and are free from obstructions.
◦ If an indirect refrigeration circuit is used,
inspect the secondary circuit for any
presence of refrigerant.
◦ Confirm that all equipment markings
remain visible and legible. Any illegible
markings or signs must be replaced or
corrected.
Ensure that refrigeration piping and
components are installed in locations where
they are not exposed to substances that could
cause corrosion. If exposure is unavoidable,
verify that the components are either made
from corrosion-resistant materials or are
adequately protected against corrosion.
▪ Inspection of Electrical Devices:
Repair and maintenance of electrical
components must include initial safety
checks and a thorough inspection of com-
ponents. If a fault is detected that could
compromise safety, the electrical supply
must not be connected to the circuit until
the issue is fully resolved.
◦ If the fault cannot be corrected immediately
but continued operation is necessary, a
temporary solution may be implemented,
provided it is safe and effective.
◦ Any temporary measures must be reported
to the equipment owner to ensure all
relevant parties are informed.
▪ Initial Safety Checks:
◦ Ensure that capacitors are fully discharged
in a controlled manner to prevent sparking.
◦ Verify that no live electrical components or
exposed wiring are present during system
charging, refrigerant recovery, or purging.
◦ Confirm that earth bonding continuity is
maintained.
▪ Repairs to Sealed Components:
Sealed electrical components must be
replaced rather than repaired.
▪ Repairs to Intrinsically Safe
Components: Intrinsically safe
components must be replaced and not
repaired.
Page 25
▪ Cabling: Ensure that cabling is not exposed to
wear, corrosion, excessive pressure, vibration,
sharp edges, or other adverse environmental
factors. Consider the long-term effects of aging
and continuous vibration from components such
as compressors or fans.
▪ Detection of Flammable Refrigerants:
Under no circumstances should potential sources
of ignition be used for refrigerant leak detection.
Halide torches or any other flame-based
detection devices must not be used.
▪ Leak Detection Methods: The following
methods are approved for detecting leaks in
systems containing flammable refrigerants:
◦ Electronic Leak Detectors: Must be used for
detecting flammable refrigerants. However, they
may require recalibration to maintain adequate
sensitivity.
- Detection equipment must be calibrated in a
refrigerant-free area.
- Ensure that the detector does not pose an
ignition risk and is compatible with the refriger-
ant in use.
- The detector must be set to a percentage of the
refrigerant's Lower Flammability Limit (LFL)
and calibrated to confirm that the appropriate
gas concentration does not exceed 25% of the
LFL.
◦ Leak Detection Fluids: Suitable for most
refrigerants but must not contain chlorine, as
chlorine can react with the refrigerant and
corrode copper piping.
◦ Safety Precautions: If a leak is suspected, all
open flames must be removed or extinguished. If
a refrigerant leak requiring brazing is detected, all
refrigerant must be fully recovered or isolated
using shut-off valves to prevent accidental
release.
◦ Oxygen-Free Nitrogen (OFN) must be
purged through the system before and
during brazing.
▪ Removal and Evacuation: When
accessing the refrigerant circuit for
repairs or other procedures,
industry-standard practices must be
followed, with additional precautions for
flammability:
1. Recover the refrigerant into approved
recovery cylinders.
2. Purge the circuit using an inert gas
(such as OFN).
3. Evacuate the system.
4. Purge again with inert gas.
5. Open the circuit by cutting or brazing.
- The system must be flushed with OFN to
ensure safety. This process may need to
be repeated multiple times.
- Do not use compressed air or oxygen for
flushing.
• Flushing should be performed by:
1. Breaking the system vacuum with OFN.
2. Filling the system until the working
pressure is reached.
3. Venting to the atmosphere.
4. Pulling the system down to vacuum.
5. Repeating the process until no
refrigerant remains in the system.
- When the final OFN charge is
introduced, the system must be vented
to atmospheric pressure to allow for safe
work. This step is critical before
performing any brazing on pipework.
• Ensure the vacuum pump outlet is
positioned away from ignition sources
and that adequate ventilation is present.
6
Considerations for A2L Refrigerants
Safety
Information
Page 25
▪ Cabling: Ensure that cabling is not exposed to
wear, corrosion, excessive pressure, vibration,
sharp edges, or other adverse environmental
factors. Consider the long-term effects of aging
and continuous vibration from components such
as compressors or fans.
▪ Detection of Flammable Refrigerants:
Under no circumstances should potential sources
of ignition be used for refrigerant leak detection.
Halide torches or any other flame-based
detection devices must not be used.
▪ Leak Detection Methods: The following
methods are approved for detecting leaks in
systems containing flammable refrigerants:
◦ Electronic Leak Detectors: Must be used for
detecting flammable refrigerants. However, they
may require recalibration to maintain adequate
sensitivity.
- Detection equipment must be calibrated in a
refrigerant-free area.
- Ensure that the detector does not pose an
ignition risk and is compatible with the refriger-
ant in use.
- The detector must be set to a percentage of the
refrigerant's Lower Flammability Limit (LFL)
and calibrated to confirm that the appropriate
gas concentration does not exceed 25% of the
LFL.
◦ Leak Detection Fluids: Suitable for most
refrigerants but must not contain chlorine, as
chlorine can react with the refrigerant and
corrode copper piping.
◦ Safety Precautions: If a leak is suspected, all
open flames must be removed or extinguished. If
a refrigerant leak requiring brazing is detected, all
refrigerant must be fully recovered or isolated
using shut-off valves to prevent accidental
release.
◦ Oxygen-Free Nitrogen (OFN) must be
purged through the system before and
during brazing.
▪ Removal and Evacuation: When
accessing the refrigerant circuit for
repairs or other procedures,
industry-standard practices must be
followed, with additional precautions for
flammability:
1. Recover the refrigerant into approved
recovery cylinders.
2. Purge the circuit using an inert gas
(such as OFN).
3. Evacuate the system.
4. Purge again with inert gas.
5. Open the circuit by cutting or brazing.
- The system must be flushed with OFN to
ensure safety. This process may need to
be repeated multiple times.
- Do not use compressed air or oxygen for
flushing.
• Flushing should be performed by:
1. Breaking the system vacuum with OFN.
2. Filling the system until the working
pressure is reached.
3. Venting to the atmosphere.
4. Pulling the system down to vacuum.
5. Repeating the process until no
refrigerant remains in the system.
- When the final OFN charge is
introduced, the system must be vented
to atmospheric pressure to allow for safe
work. This step is critical before
performing any brazing on pipework.
• Ensure the vacuum pump outlet is
positioned away from ignition sources
and that adequate ventilation is present.
6
Considerations for A2L Refrigerants
Safety
Information
Page 26
Safety
Information
6
Considerations for A2L Refrigerants
◦ Decommissioning: Before starting
decommissioning, the technician must be
fully familiar with the equipment and its
components. All refrigerant should be
recovered safely as a standard best
practice. Prior to decommissioning, an oil
and refrigerant sample should be collected
for analysis if reclaimed refrigerant is
intended for reuse. Electrical power must
be available before beginning the
decommissioning process.
A. Familiarization: Understand the
equipment, its operation, and the
decommissioning process before
beginning work.
B. Electrical Isolation: Disconnect the
system from the electrical supply to prevent
accidental activation during the procedure.
C. Pre-Procedure Safety Checks: Before
proceeding, ensure the following:
1. Mechanical handling equipment is
available if needed for refrigerant
cylinder transport.
2. All required personal protective
equipment (PPE) is present and
correctly used.
3. A competent person supervises the
entire refrigerant recovery process.
4. Recovery equipment and cylinders
comply with all relevant safety and
regulatory standards.
D. Pump Down the Refrigerant System: If
possible, perform a pump-down procedure
to remove refrigerant from the system.
E. Alternative Method if Vacuum is Not
Possible: If a complete vacuum cannot be
achieved, create a manifold to facilitate
refrigerant removal from multiple points in
the system.
F. Cylinder Positioning: Ensure the
recovery cylinder is placed on a scale before
starting the refrigerant recovery process.
G. Recovery Machine Operation: Start the
recovery machine and follow the
manufacturer’s instructions for proper
operation.
H. Cylinder Fill Limits: Do not exceed 80%
of the cylinder’s total volume when filling
with liquid refrigerant to allow for expansion.
I. Maximum Pressure Precautions: Do not
exceed the maximum working pressure of
the recovery cylinder at any time, even
temporarily.
J. Finalizing the Recovery Process:
▪ Once the cylinders are correctly filled and
the process is complete:
▪ Promptly remove the cylinders and
recovery equipment from the site.
▪ Close all isolation valves on the equipment
to prevent leaks.
K. Handling Recovered Refrigerant:
Recovered refrigerant must not be recharged
into another refrigeration system unless it has
been properly cleaned and tested to ensure
compliance with safety and performance
standards.
▪ Labeling: The equipment must be
labeled to indicate that it has been
decommissioned and emptied of
refrigerant. The label must include the date
of decommissioning and the signature of
the responsible technician. Ensure that the
equipment retains labels indicating the
presence of flammable refrigerant, even
after decommissioning.
Decomissioning Information for A2L Refrigerants
Page 27
6
Considerations for A2L Refrigerants
Recovery Procedure: When removing refrigerant
from a system for servicing or decommissioning, the
following best practices must be observed to ensure
safety and compliance:
1. Safe Refrigerant Removal: All refrigerants must
be safely removed from the system following
proper handling procedures.
2. Use of Appropriate Recovery Cylinders: Only
approved refrigerant recovery cylinders must
be used.
A. Ensure that a sufficient number of cylin-
ders are available to accommodate the total
refrigerant charge from the system.
B. Each cylinder must be designated and
labeled for the specific refrigerant being
recovered (e.g., cylinders specifically designed
for refrigerant recovery).
C. Recovery cylinders must be equipped with a
pressure-relief valve and functioning
shut-off valves.
D. Empty recovery cylinders should be
evacuated and, if possible, pre-cooled
before the recovery process begins.
3. Recovery Equipment Requirements: The
recovery equipment must be:
A. In good working condition.
B. Accompanied by manufacturer-provided
operating instructions.
C. Suitable for recovering all appropriate
refrigerants, including flammable refrigerants
when applicable.
D. A calibrated weighing scale must be available
to monitor refrigerant recovery accurately.
E. Hoses must be equipped with leak-free
disconnect couplings and be in good
condition.
◦ Before using the recovery machine:
Verify that it is in proper working order
and has been properly maintained.
Ensure that any associated electrical
components are sealed to prevent
ignition in case of a refrigerant leak.
◦ If in doubt, consult the manufacturer.
4. Handling Recovered Refrigerant:
• It is vital that:
A. The recovered refrigerant must be
returned to the refrigerant supplier in
the correct recovery cylinder.
B. A waste transfer note must be
arranged for proper documentation
and disposal.
C. Do not mix refrigerants in recovery
units or cylinders under any
circumstances.
5. Compressor and Oil Removal:
• If compressors or compressor oils need
to be removed:
A. Ensure that they have been
evacuated to an acceptable level
to eliminate any remaining flammable
refrigerant within the lubricant.
B. The evacuation process must be
completed before returning the
compressor to the supplier.
C. Only electric heating should be
used to accelerate the evacuation of
refrigerant from the compressor
body. Open flames or ignition
sources must not be used.
• When draining oil from a system, the
process must be conducted safely and in
accordance with best practices.
Recovery Information for A2L Refrigerants
Safety
Information
Page 27
6
Considerations for A2L Refrigerants
Recovery Procedure: When removing refrigerant
from a system for servicing or decommissioning, the
following best practices must be observed to ensure
safety and compliance:
1. Safe Refrigerant Removal: All refrigerants must
be safely removed from the system following
proper handling procedures.
2. Use of Appropriate Recovery Cylinders: Only
approved refrigerant recovery cylinders must
be used.
A. Ensure that a sufficient number of cylin-
ders are available to accommodate the total
refrigerant charge from the system.
B. Each cylinder must be designated and
labeled for the specific refrigerant being
recovered (e.g., cylinders specifically designed
for refrigerant recovery).
C. Recovery cylinders must be equipped with a
pressure-relief valve and functioning
shut-off valves.
D. Empty recovery cylinders should be
evacuated and, if possible, pre-cooled
before the recovery process begins.
3. Recovery Equipment Requirements: The
recovery equipment must be:
A. In good working condition.
B. Accompanied by manufacturer-provided
operating instructions.
C. Suitable for recovering all appropriate
refrigerants, including flammable refrigerants
when applicable.
D. A calibrated weighing scale must be available
to monitor refrigerant recovery accurately.
E. Hoses must be equipped with leak-free
disconnect couplings and be in good
condition.
◦ Before using the recovery machine:
Verify that it is in proper working order
and has been properly maintained.
Ensure that any associated electrical
components are sealed to prevent
ignition in case of a refrigerant leak.
◦ If in doubt, consult the manufacturer.
4. Handling Recovered Refrigerant:
• It is vital that:
A. The recovered refrigerant must be
returned to the refrigerant supplier in
the correct recovery cylinder.
B. A waste transfer note must be
arranged for proper documentation
and disposal.
C. Do not mix refrigerants in recovery
units or cylinders under any
circumstances.
5. Compressor and Oil Removal:
• If compressors or compressor oils need
to be removed:
A. Ensure that they have been
evacuated to an acceptable level
to eliminate any remaining flammable
refrigerant within the lubricant.
B. The evacuation process must be
completed before returning the
compressor to the supplier.
C. Only electric heating should be
used to accelerate the evacuation of
refrigerant from the compressor
body. Open flames or ignition
sources must not be used.
• When draining oil from a system, the
process must be conducted safely and in
accordance with best practices.
Recovery Information for A2L Refrigerants
Safety
Information
Page 28
Safety
Information
6
Considerations for A2L Refrigerants
WARNING
USAGE STATEMENT
◦ Do not use any unauthorized methods to accelerate
the defrosting process or for cleaning. Follow only
the manufacturer's recommended procedures.
◦ The appliance must be stored in a room free of
continuously operating ignition sources (e.g., open
flames, an operating gas appliance, or an electric
heater).
◦ Do not pierce or burn any part of the system.
◦ Be aware that refrigerants may be odorless.
COMPLIANCE
◦ Minimum Installation Requirements: The minimum installation
height and minimum room area (for both operation and storage)
must be in accordance with the installation manual.
◦ Risk of Fire – Auxiliary Devices: Ignition source auxiliary
devices must not be installed within the ductwork, except for
auxiliary devices specifically listed for use with this appliance.
Refer to the installation instructions.
◦ Mounting Clearance:The system must be mounted with the
lowest moving parts at least 2.5m (8ft) above the floor or grade
level.
◦ Risk of Electric Shock: Serious injury or death may occur.
Disconnect all remote electric power supplies before performing
any servicing.
◦ Risk of Fire – Flammable Refrigerant: Flammable refrigerant is
used. Maintenance and repairs must only be performed by
trained service personnel. Do not puncture refrigerant tubing.
◦ Risk of Fire – Proper Disposal Required: Dispose of the
system in accordance with all applicable federal and local
regulations.
◦ Flammable refrigerant is used; ensure proper handling and
disposal.
◦ Risk of Fire – Service Precautions: Flammable refrigerant is
used. Refer to the repair manual/owner’s guide before attempting
to service this product.
◦ Risk of Fire – Compliance with Regulations: Due to the use of
flammable refrigerants, follow handling instructions carefully and
ensure compliance with national regulations.
◦ Ne pas utiliser de moyens non recommandés par le
fabricant pour accélérer le dégivrage ou nettoyer
l’appareil.
◦ L’appareil doit être entreposé dans un endroit sans
source d’allumage fonctionnant en continu (par
exemple : flamme nue, appareil à gaz en marche, ou
radiateur électrique en marche).
◦ Ne pas percer ni brûler l’appareil.
◦ Attention : les frigorigènes peuvent être inodores.
◦ Before unloading and opening the container, use a
flammable gas detector to check for potential leaks.
◦ No fire sources or smoking are allowed in the vicinity.
◦ Pipework must be protected from physical damage. For
FLAMMABLE REFRIGERANTS, pipes must not be
installed in an unventilated space if that space is smaller
than the minimum requirements stated in Annex GG,
except in the case of A2L REFRIGERANTS, where
installed pipes must comply with 22.116. If field
charging is required, the impact of different pipe lengths
on the REFRIGERANT CHARGE must be quantified.
◦ Compliance with all national gas regulations must be
ensured.
◦ Mechanical connections made in accordance with
22.118 must remain accessible for maintenance
purposes.
◦ Pipework, including piping material, routing, and
installation, must be protected from physical damage
during operation and servicing. It must comply with all
national and local codes and standards, including:
• ASHRAE 15
• ASHRAE 15.2
• IAPMO Uniform Mechanical Code
• ICC International Mechanical Code
• CSA B52
• All field joints must be accessible for inspection
before being covered or enclosed.
◦ After field piping installation for split systems, the field
pipework must undergo:
• Pressure testing with an inert gas.
• Vacuum testing before refrigerant charging,
following the required standards.
◦ The appliance must be stored in a way that prevents
mechanical damage.
◦ Maintenance, service, and repair operations must only
be carried out by qualified personnel according to
Annex HH.
◦ Only competent persons should perform safety-critical
procedures, including:
• Breaking into the refrigerant circuit
• Opening sealed components
• Opening ventilated enclosures
AVERTISSEMENT
Page 29
6
Considerations for A2L Refrigerants
Preparation for Working on Systems With A2L Refrigerants
No Flammable
Sources
Ventilation
Necessary
Wear
Protective
Gear
Don’t Use
Electronics
Near System
Refrigerant Leakage Detector
Determining Installation Location
A handheld leakage detector can
aid with tracing and isolating
refrigerant leaks. As such, it is
recommended to have one handy
whenever working on the system.
It is vital that the systems are installed in
suitable locations based on the guidelines
given below. For best results, follow all
requirements given in this manual when
determining placement of the equipment.
Installation Site Requirements:
1. Ensure Proper Ventilation
◦ The installation site must be well-ventilated
to allow safe operation and prevent
refrigerant accumulation.
2. Keep Away from Heat and Fire Hazards
◦ The installation and maintenance sites for air
conditioners using Refrigerant R454-B must
be free from open flames or heat sources.
◦ Avoid locations near welding activities,
smoking areas, drying ovens, or any heat
source exceeding 1000°F, as these can
create ignition risks.
3. Implement Anti-Static Precautions
◦ Wear anti-static clothing and gloves to
prevent static discharge when handling and
installing the unit.
4. Select an Accessible Installation Site
◦ The installation location must allow easy
access for maintenance.
◦ Indoor and outdoor units should not be
surrounded by obstacles that restrict airflow.
◦ Avoid areas close to heat sources or
environments with flammable or explosive
materials.
5. Refrigerant Leak Emergency Actions
◦ If the indoor unit leaks refrigerant
during installation, immediately shut off
the outdoor unit valve.
◦ All personnel must evacuate the area
for at least 15 minutes until the
refrigerant fully dissipates.
◦ If the product is damaged, it must be
transported to a maintenance station.
Please note that on-site welding or
refrigerant pipe repairs are strictly
prohibited.
6. Ensure Even Airflow
◦ Choose a location where the air inlet
and outlet flow of indoor unit remains
unobstructed and evenly distributed.
7. Avoid Installing Near Sensitive Areas
◦ Do not install the indoor unit near:
• Electrical devices or power outlets.
• Kitchen cabinets, beds, sofas, or
valuable items.
• Areas where the airflow from the
two sides of the unit could directly
impact important objects.
Safety
Information
Page 30
Safety
Information
6
Considerations for A2L Refrigerants
Important Considerations:
1. The air conditioner must be installed and
serviced by qualified personnel. Installation
must comply with all instructions set forth
herein as well as all local regulations.
2. Caution when handling combustible
refrigerants – Improper or careless handling may
cause serious injury or damage to property.
3. A leak test must be conducted after installation
is completed to ensure system integrity.
4. Safety inspections are mandatory before
performing maintenance or repairs on air
conditioners using combustible refrigerants to
minimize fire risk.
5. The system must be operated under controlled
conditions to reduce the risk of combustible gas
or vapor hazards during operation.
6. The total weight of refrigerant charge and
minimum room area requirements for air
conditioners must comply with the specifications
outlined in Tables GG.1 and GG.2.
Maximum Refrigerant Charge and Required
Minimum Floor Area: The maximum charge is
determined by the following equations:
m
1
= (6m
3
) x LFL, m
2
= (52m
3
) x LFL, m
3
= (260m
3
) x LFL
Where LFL is the Lower Flammable Limit in kg/m³.
For R454-B refrigerant, LFL = 0.303 kg/m³.
For Appliances with a Charge Amount m
1
< M = m
2
:
The maximum refrigerant charge in a room must
comply with: M
max
= 2.5 x (LFL)
5/4
x h
0
x A
1/2
This value must not exceed: M
max
= SF x LFL x h
0
x A
(Refer to GG.3DV for specific factors and application.)
(If Applicable) Charging Protocol for A2L Refrigerants
Minimum Floor Area Requirement: The
required minimum floor area A
min
for an
appliance with a refrigerant charge M
c
(kg)
must be calculated as follows:
A
min
= [M
c
/(2.5 x LFL
5/4
x h
0
]
2
However, Amin must not be less than:
A
min
= M
c
/(SF x LFL x h
0
); SF=0.5
(Refer to GG.4DV for specific values/factors.)
Where Category = R454-B, LFL = 0.303 kg/m
3
Table GG.1 - Maximum Charge (kg)
(6’0”)
(Installed
Height)
(Installed
Height)
(Installed
Height)
(43 ft
2
)
(38.5 oz)
(67.3 oz)
1.09
1.91
(96.2 oz)2.73
(138.2 oz)3.92
(159.6 oz)4.52
(195.5 oz)5.54
(252.3 oz)7.1 5
(53.44 oz)
(93.5 oz)
1.52
2.65
(133.6 oz)3.79
(191.9 oz)5.44
(221.6 oz)6.28
(271.4 oz)7.7
(350.4 oz)9.94
(59.8 oz)
(104.7 oz)
1.7
2.97
(149.6 oz)4.24
(215 oz)6.09
(248.2 oz)7.0 4
(304 oz)8.62
(392.5 oz)11.12
(75 ft
2
)
(107 ft
2
)
(161 ft
2
)
(215 ft
2
)
(322 ft
2
)
(538 ft
2
)
(43 ft
2
)
(75 ft
2
)
(107 ft
2
)
(161 ft
2
)
(215 ft
2
)
(322 ft
2
)
(538 ft
2
)
(43 ft
2
)
(75 ft
2
)
(107 ft
2
)
(161 ft
2
)
(215 ft
2
)
(322 ft
2
)
(538 ft
2
)
(8’2”)
(9’2”)
Page 30
Safety
Information
6
Considerations for A2L Refrigerants
Important Considerations:
1. The air conditioner must be installed and
serviced by qualified personnel. Installation
must comply with all instructions set forth
herein as well as all local regulations.
2. Caution when handling combustible
refrigerants – Improper or careless handling may
cause serious injury or damage to property.
3. A leak test must be conducted after installation
is completed to ensure system integrity.
4. Safety inspections are mandatory before
performing maintenance or repairs on air
conditioners using combustible refrigerants to
minimize fire risk.
5. The system must be operated under controlled
conditions to reduce the risk of combustible gas
or vapor hazards during operation.
6. The total weight of refrigerant charge and
minimum room area requirements for air
conditioners must comply with the specifications
outlined in Tables GG.1 and GG.2.
Maximum Refrigerant Charge and Required
Minimum Floor Area: The maximum charge is
determined by the following equations:
m
1
= (6m
3
) x LFL, m
2
= (52m
3
) x LFL, m
3
= (260m
3
) x LFL
Where LFL is the Lower Flammable Limit in kg/m³.
For R454-B refrigerant, LFL = 0.303 kg/m³.
For Appliances with a Charge Amount m
1
< M = m
2
:
The maximum refrigerant charge in a room must
comply with: M
max
= 2.5 x (LFL)
5/4
x h
0
x A
1/2
This value must not exceed: M
max
= SF x LFL x h
0
x A
(Refer to GG.3DV for specific factors and application.)
(If Applicable) Charging Protocol for A2L Refrigerants
Minimum Floor Area Requirement: The
required minimum floor area A
min
for an
appliance with a refrigerant charge M
c
(kg)
must be calculated as follows:
A
min
= [M
c
/(2.5 x LFL
5/4
x h
0
]
2
However, Amin must not be less than:
A
min
= M
c
/(SF x LFL x h
0
); SF=0.5
(Refer to GG.4DV for specific values/factors.)
Where Category = R454-B, LFL = 0.303 kg/m
3
Table GG.1 - Maximum Charge (kg)
(6’0”)
(Installed
Height)
(Installed
Height)
(Installed
Height)
(43 ft
2
)
(38.5 oz)
(67.3 oz)
1.09
1.91
(96.2 oz)2.73
(138.2 oz)3.92
(159.6 oz)4.52
(195.5 oz)5.54
(252.3 oz)7.1 5
(53.44 oz)
(93.5 oz)
1.52
2.65
(133.6 oz)3.79
(191.9 oz)5.44
(221.6 oz)6.28
(271.4 oz)7.7
(350.4 oz)9.94
(59.8 oz)
(104.7 oz)
1.7
2.97
(149.6 oz)4.24
(215 oz)6.09
(248.2 oz)7.0 4
(304 oz)8.62
(392.5 oz)11.12
(75 ft
2
)
(107 ft
2
)
(161 ft
2
)
(215 ft
2
)
(322 ft
2
)
(538 ft
2
)
(43 ft
2
)
(75 ft
2
)
(107 ft
2
)
(161 ft
2
)
(215 ft
2
)
(322 ft
2
)
(538 ft
2
)
(43 ft
2
)
(75 ft
2
)
(107 ft
2
)
(161 ft
2
)
(215 ft
2
)
(322 ft
2
)
(538 ft
2
)
(8’2”)
(9’2”)
Page 31
6
Considerations for A2L Refrigerants
Where Category = R454-B, LFL = 0.303 kg/m
3
Table GG.2 - Minimum Room Area (m
2
)
Table GG.4DV - Minimum Room Area (m
2
)
Table GG.3DV - Maximum Charge (g) [lbs]
The calculated minimum allowable room area for
all capacities is as follows:
The standard factory refrigerant charge amount as
well as the maximum allowable charge are as follows:
Use the above figures when charging the system
from empty. The proceeding pages will also inform
the reader in determining the additional refrigerant
charging amounts for adjusting the factory charge
when using non-standard piping length.
Determining Refrigerant Amount
Suggested Tools:
Safety
Information
(Installed
Height)
(6’0”)
(8’2”)
(9’2”)
(32 ft
2
)
(38 ft
2
)
(40 ft
2
)
(52 ft
2
)
(63 ft
2
)
(71 ft
2
)
(79 ft
2
)
(23 ft
2
)
(27 ft
2
)
(29 ft
2
)
(37 ft
2
)
(45 ft
2
)
(52 ft
2
)
(57 ft
2
)
(21 ft
2
)
(25 ft
2
)
(26 ft
2
)
(33 ft
2
)
(41 ft
2
)
(46 ft
2
)
(51 ft
2
)
Model
(BTU)
Minimum Allowable Room Area
(Assumes 25 ft lineset and 6 ft install height)
12,000
9,000
18,000
24,000
3.67 m
3.48 m
2
2
(40 ft
2
)
(38 ft
2
)
4.77 m
2
(52 ft
2
)
5.79 m
2
(63 ft
2
)
Model
(BTU)
R454-B Refrigerant
(Standard Charge)
R454-B Refrigerant
(Maximum Charge)
9,000 950 g / 2.09 lbs 1025 g / 2.26 lbs
12,000 1000 g / 2.2 lbs 1075 g / 2.37 lbs
18,000 1300 g / 2.87 lbs 1375 g / 3.03 lbs
24,000 1580 g / 3.48 lbs 1655 g / 3.65 lbs
(28.2 oz)
(33.5 oz)
0.8
0.95
(35.3 oz)1.0
(45.9 oz)1.3
(55.7 oz)1.58
(63.5 oz)1.8
(70.5 oz)2.0
2.93
3.48
3.67
4.77
5.79
6.6
7.33
(28.2 oz)
(33.5 oz)
0.8
0.95
(35.3 oz)1.0
(45.9 oz)1.3
(55.7 oz)1.58
(63.5 oz)1.8
(70.5 oz)2.0
(28.2 oz)
(33.5 oz)
0.8
0.95
(35.3 oz)1.0
(45.9 oz)1.3
(55.7 oz)1.58
(63.5 oz)1.8
(70.5 oz)2.0
2.11
2.51
2.64
3.43
4.1 7
4.75
5.28
1.89
2.24
2.36
3.06
3.72
4.24
4.71
Page 32
Indoor Unit
Installation
7
Indoor Unit Installation Instructions
Installation Diagram
Before proceeding, it is important to consider the following height and length restrictions:
Install the indoor unit inside the room to be air conditioned, avoiding corridors and communal areas.
Install the indoor unit at a height such that the bottom of the indoor unit is at least 72 inches above
the floor. Allow adequate space (4-6 inches, ideally 8 inches) above the air handler for return airflow.
Before starting the installation, decide on the position of both the indoor and outdoor units.
Take into account the minimum clearance requirements for both the indoor and outdoor units,
which can be found in their respective sections of this manual. Follow all required clearances.
Indoor Unit
Pipe length
is 50' max
Pipe length
is 50' max
Outdoor Unit
Outdoor Unit
Indoor Unit
Height differential
must be less than 33 ft.
Height differential
must be less than 33 ft.
NOTE
Only persons and/or companies qualified and experienced in the installation, service, and repair of refrigerant
products should be permitted to do so. The purchaser must ensure the system is installed carefully and correctly.
For Systems of 18K and 24K BTU:
For Systems of 9K and 12K BTU:
• Follow the given constraints in the
figures to the left.
• The allowable height differential
increases to 50 ft.
• The allowable pipe length is 65 ft.
Page 33
Indoor Unit
Installation
7
Indoor Unit Installation Instructions
Indoor Unit Installation Location Selection
Follow the below best practices for selecting an optimal space for installation the indoor unit:
1.8-2.5 m (72-100 in) or more
Floor
Ceiling
10-15 cm (4-6in)
or more
10-15 cm (4-6 in)
or more
10-15 cm (4-6 in) or more
▪ DO NOT install the unit on a wall that is subject to vibrations.
▪ DO NOT install the system near sources of heat, steam, or flammable gases.
▪ DO NOT install the indoor unit in a location that is exposed to direct sunlight.
▪ DO ensure that the inlet and outlet vents are not obstructed. The system should be able to
output air all across the room.
▪ DO minimize the distance between the indoor and outdoor unit and install the unit in a place
where connecting the indoor and outdoor unit will be as simple as possible.
▪ DO install the unit on a strong wall and where it is easy to drain the condensate water.
▪ DO install the unit in a location where it will be easy to service the machine and perform any
necessary maintenance.
▪ DO obey the following tolerances depicted in the illustration below:
Page 32
Indoor Unit
Installation
7
Indoor Unit Installation Instructions
Installation Diagram
Before proceeding, it is important to consider the following height and length restrictions:
Install the indoor unit inside the room to be air conditioned, avoiding corridors and communal areas.
Install the indoor unit at a height such that the bottom of the indoor unit is at least 72 inches above
the floor. Allow adequate space (4-6 inches, ideally 8 inches) above the air handler for return airflow.
Before starting the installation, decide on the position of both the indoor and outdoor units.
Take into account the minimum clearance requirements for both the indoor and outdoor units,
which can be found in their respective sections of this manual. Follow all required clearances.
Indoor Unit
Pipe length
is 50' max
Pipe length
is 50' max
Outdoor Unit
Outdoor Unit
Indoor Unit
Height differential
must be less than 33 ft.
Height differential
must be less than 33 ft.
NOTE
Only persons and/or companies qualified and experienced in the installation, service, and repair of refrigerant
products should be permitted to do so. The purchaser must ensure the system is installed carefully and correctly.
For Systems of 18K and 24K BTU:
For Systems of 9K and 12K BTU:
• Follow the given constraints in the
figures to the left.
• The allowable height differential
increases to 50 ft.
• The allowable pipe length is 65 ft.
Page 33
Indoor Unit
Installation
7
Indoor Unit Installation Instructions
Indoor Unit Installation Location Selection
Follow the below best practices for selecting an optimal space for installation the indoor unit:
1.8-2.5 m (72-100 in) or more
Floor
Ceiling
10-15 cm (4-6in)
or more
10-15 cm (4-6 in)
or more
10-15 cm (4-6 in) or more
▪ DO NOT install the unit on a wall that is subject to vibrations.
▪ DO NOT install the system near sources of heat, steam, or flammable gases.
▪ DO NOT install the indoor unit in a location that is exposed to direct sunlight.
▪ DO ensure that the inlet and outlet vents are not obstructed. The system should be able to
output air all across the room.
▪ DO minimize the distance between the indoor and outdoor unit and install the unit in a place
where connecting the indoor and outdoor unit will be as simple as possible.
▪ DO install the unit on a strong wall and where it is easy to drain the condensate water.
▪ DO install the unit in a location where it will be easy to service the machine and perform any
necessary maintenance.
▪ DO obey the following tolerances depicted in the illustration below:
Page 34
Indoor Unit
Installation
7
Indoor Unit Installation Instructions
Installation of the Mounting Plate
Drilling the Wall Hole for Piping
Indoors Outdoors
(5-10 mm)
1/4”~3/8”
1
2
3
If doing right side exit...
Ensure the mounting plate is firm and flat against wall
Small Oblique Angle
Φ 2-1/2” (65mm)
Φ (Up to 3-1/8”/80 mm)
Φ 2-1/2”~3-1/8”
(depending on lineset)
Φ 2-1/2”
1. Dislodge the mounting plate from the rear of the
indoor unit and place the mounting plate against
the wall where the system will hang that fulfills the
constraints on page 33. Use a level to ensure that
the plate is horizontally and vertically level.
2. Drill 1-1/4” deep holes for each screw to enter. The
locations are flexible but should be spaced well.
3. Insert the plastic anchors into each of the holes.
4. Fix the mounting plate to the wall by using the
included tapping screws. Check that it is secured.
Note: The actual appearance of the mounting plate
may differ slightly but the process is similar.
CHECK PAGES 54-55 FOR MOUNTING HOLE
GUIDELINES ACCORDING TO THE BRACKET.
1. With the mounting plate firmly affixed to the wall,
mount the indoor unit onto the mounting plate
temporarily in order to confirm the location of the
wall hole in the next steps.
2. Using a pencil, lightly trace the bottom corner of
the indoor unit, depending on which side exit the
piping will go through (see Page 36).
3. Take the inside unit off of the plate, and make a
mark of where the hole will be (PG. 54-55), to
ensure ample clearance between the tracing and
bracket.
4. Drill a 2-1/2”~3-1/8“ wall hole at a slight
downward angle using a core drill, being careful
to avoid wires, plumbing, and other sensitive
materials. The bottom of the inside hole should
be ~1/4” above the bottom of the outside hole.
Wall Sleeve Cover
(Optional)
Wall Hole
(For bigger linesets, or according
to wall liner used, a larger wall
hole size up to 3-1/8” can be made)
Wall Sleeve
(Optional)
Page 35
Indoor Unit
Installation
7
Indoor Unit Installation Instructions
Electrical Connections - Indoor Unit
BEFORE PERFORMING ELECTRICAL WORK, READ THESE REGULATIONS
WARNING:
BEFORE PERFORMING ANY ELECTRICAL OR WIRING WORK, TURN OFF THE
MAIN POWER TO THE SYSTEM. NOTE MULTIPLE POWER SOURCES MAY EXIST.
Front Panel
Wiring Diagram
Terminal Block
Cover
All systems will include a wiring diagram affixed to the
indoor unit. See Page 38 for more details.
1. Lift up the front panel of the indoor unit.
2. Remove the cover as indicated in the illustration.
3. For the electrical wiring, consult the circuit diagram
affixed to the elecrical cover.
4. Connect the cables to the wiring terminal by following
the numbering. Use wire gauge suitable for the
electrical power input. (see name plate on the unit).
1. All wiring must comply with local and national electrical codes, and must be installed by a licensed
electrician.
2. All electrical connections must be made according to the Electrical Connection Diagram located
on the panels of the indoor and outdoor units.
3. If there is a serious safety issue with the power supply, stop work immediately. Explain your
reasoning to the client, and suspend all installation until the safety issue is properly resolved.
4. Power voltage should be within 90-110% of the range for the rated voltage. Insufficient power
supply can cause malfunction, electrical shock, or fire.
5. Connect power through fixed wiring, install a surge protector and a disconnect switch box, and a
dedicated circuit breaker with a capacity of 1.5 times the maximum current of the unit.
6. A properly rated HACR-type fuse or circuit breaker that disconnects all poles and that has a
contact separation of at least 1/8in (3mm) must be incorporated in the fixed wiring. The qualified
technician must use an approved circuit breaker or fuse.
7. Only connect the unit to an individual branch circuit. Do not connect another appliance to that
outlet. This equipment requires its own dedicated and protected circuit.
8. Make sure to properly ground the air conditioner. The use of a surge protector is recommended.
9. Every wire must be firmly connected. Loose wiring can cause the terminal to overheat, resulting in
product malfunction and possible fire.
10. Do not let wires touch or rest against refrigerant tubing, the compressor, or any moving parts
within the unit.
Page 34
Indoor Unit
Installation
7
Indoor Unit Installation Instructions
Installation of the Mounting Plate
Drilling the Wall Hole for Piping
Indoors Outdoors
(5-10 mm)
1/4”~3/8”
1
2
3
If doing right side exit...
Ensure the mounting plate is firm and flat against wall
Small Oblique Angle
Φ 2-1/2” (65mm)
Φ (Up to 3-1/8”/80 mm)
Φ 2-1/2”~3-1/8”
(depending on lineset)
Φ 2-1/2”
1. Dislodge the mounting plate from the rear of the
indoor unit and place the mounting plate against
the wall where the system will hang that fulfills the
constraints on page 33. Use a level to ensure that
the plate is horizontally and vertically level.
2. Drill 1-1/4” deep holes for each screw to enter. The
locations are flexible but should be spaced well.
3. Insert the plastic anchors into each of the holes.
4. Fix the mounting plate to the wall by using the
included tapping screws. Check that it is secured.
Note: The actual appearance of the mounting plate
may differ slightly but the process is similar.
CHECK PAGES 54-55 FOR MOUNTING HOLE
GUIDELINES ACCORDING TO THE BRACKET.
1. With the mounting plate firmly affixed to the wall,
mount the indoor unit onto the mounting plate
temporarily in order to confirm the location of the
wall hole in the next steps.
2. Using a pencil, lightly trace the bottom corner of
the indoor unit, depending on which side exit the
piping will go through (see Page 36).
3. Take the inside unit off of the plate, and make a
mark of where the hole will be (PG. 54-55), to
ensure ample clearance between the tracing and
bracket.
4. Drill a 2-1/2”~3-1/8“ wall hole at a slight
downward angle using a core drill, being careful
to avoid wires, plumbing, and other sensitive
materials. The bottom of the inside hole should
be ~1/4” above the bottom of the outside hole.
Wall Sleeve Cover
(Optional)
Wall Hole
(For bigger linesets, or according
to wall liner used, a larger wall
hole size up to 3-1/8” can be made)
Wall Sleeve
(Optional)
Page 35
Indoor Unit
Installation
7
Indoor Unit Installation Instructions
Electrical Connections - Indoor Unit
BEFORE PERFORMING ELECTRICAL WORK, READ THESE REGULATIONS
WARNING:
BEFORE PERFORMING ANY ELECTRICAL OR WIRING WORK, TURN OFF THE
MAIN POWER TO THE SYSTEM. NOTE MULTIPLE POWER SOURCES MAY EXIST.
Front Panel
Wiring Diagram
Terminal Block
Cover
All systems will include a wiring diagram affixed to the
indoor unit. See Page 38 for more details.
1. Lift up the front panel of the indoor unit.
2. Remove the cover as indicated in the illustration.
3. For the electrical wiring, consult the circuit diagram
affixed to the elecrical cover.
4. Connect the cables to the wiring terminal by following
the numbering. Use wire gauge suitable for the
electrical power input. (see name plate on the unit).
1. All wiring must comply with local and national electrical codes, and must be installed by a licensed
electrician.
2. All electrical connections must be made according to the Electrical Connection Diagram located
on the panels of the indoor and outdoor units.
3. If there is a serious safety issue with the power supply, stop work immediately. Explain your
reasoning to the client, and suspend all installation until the safety issue is properly resolved.
4. Power voltage should be within 90-110% of the range for the rated voltage. Insufficient power
supply can cause malfunction, electrical shock, or fire.
5. Connect power through fixed wiring, install a surge protector and a disconnect switch box, and a
dedicated circuit breaker with a capacity of 1.5 times the maximum current of the unit.
6. A properly rated HACR-type fuse or circuit breaker that disconnects all poles and that has a
contact separation of at least 1/8in (3mm) must be incorporated in the fixed wiring. The qualified
technician must use an approved circuit breaker or fuse.
7. Only connect the unit to an individual branch circuit. Do not connect another appliance to that
outlet. This equipment requires its own dedicated and protected circuit.
8. Make sure to properly ground the air conditioner. The use of a surge protector is recommended.
9. Every wire must be firmly connected. Loose wiring can cause the terminal to overheat, resulting in
product malfunction and possible fire.
10. Do not let wires touch or rest against refrigerant tubing, the compressor, or any moving parts
within the unit.
Page 36
Indoor Unit
Installation
Preparing the Refrigerant Piping of the Indoor Unit
The piping “pigtails” pre-attached to the indoor unit can be run in 3 different ways as shown
in the illustration. Decide which type of configuration is most suitable before continuing.
By default it is routed for a left side exit as shown in #1. This method can either use the left
side knockout for a side exit, or a wall hole can be drilled on the left side of the unit’s rear.
Routing it straight through the back of the system (#2) will facillitate the connections to the
copper pipe extensions to be made outside. This is recommended to simplify the process.
#3 is a right side exit, but is not recommended as it involves a 180° bend of the piping, which
increases the risk of kinking or collapsing the lines dramatically. Bend slowly and cautiously.
If a side-exit is chosen, there are knock-out panels on either side of the unit that can be cut
out along the groove to provide a notch for the pipe to exit from. Use a suitable cutter to do this.
For the method chosen, run the piping in the direction of the wall hole. Bind the copper
pipes, drain pipe, and power cables together with tape, with the drain pipe at the bottom so
that water can flow freely. Ensure that the bundle is exiting at a continuous downward pitch.
3
2 1
Downward
Inclination
CAUTION
YES
NO
Unwind the coil gently against a flat
surface, rather than pulling at ends.
7
Indoor Unit Installation Instructions
Piping Outlet
Cable Outlet
(Optional - If Needed)
▪ Do not remove the seal caps from the pipe ends until it is
time to connect it, to avoid contaminants from entering.
▪ If the pipe is bent/pulled too often, it will become stiff.
Don’t bend the pipe more than three times at one point.
Be extremely careful not to kink any piping.
▪ When extending the coiled copper pipes, straighten
them by unwinding gently, as shown in the picture.
Page 37
Indoor Unit
Installation
Connecting the Drain Hose
NOTE ON DRAIN HOSE PLACEMENT
Make sure to arrange the drain hose according
to
the illustrations.
DUAL DRAIN HOLE LOCATIONS EXIST
The indoor unit has 2 drain connections on left and
right sides. Either one can be utilized. One side will
have a hose connected, while the other is plugged.
YES
NO
NO
Drainage Ports
7
Indoor Unit Installation Instructions
By default, the drain hose is attached to the left-hand side of
unit (”left” when facing the back of the unit). However, it can
also be attached to the right-hand side.
1. To ensure proper drainage, attach the drain hose on the
same side that your refrigerant piping exits the unit.
2. Attach any drain hose extensions (sold separately) to the
end of drain hose.
3. Wrap the connection point of the drain hose firmly with
Teflon tape to create a good seal, and to prevent leaks.
4. For the portion of the drain hose that will remain indoors,
wrap it with foam pipe insulation to prevent condensation.
5. Remove the air filter and pour a small amount of water into
the drain pan to make sure that water flows away from the
unit smoothly.
DO NOT kink the drain hose.
DO NOT create a water trap (siphon).
DO NOT put the end of the drain hose in water
or in a container that will collect water.
Page 38
Indoor Unit
Installation
7
Indoor Unit Installation Instructions
Connecting the Signal Cable
Cable Wire Specifications (For Common Configurations)
• 230V require a double-pole breaker (tandem-type will not work)
Double-Pole
230V Breaker
Consult the nameplate on the system for detailed electrical specifications.
Confirm wiring on Page 42. Above power wire sizes assume largest allowable fuse.
Color selection does not matter as much as matching number to number does. Consult the
diagram affixed to the indoor and outdoor unit respectively for specific wiring instructions. There are
3 terminals (1, 2 , 3) and ground (G). Do not mix up the wires between each ends. It is vital that the
colors between the indoor and outdoor unit match for each terminal. A simplified wiring diagram is
included in the Appendix section of this manual. On the indoor unit, the wiring diagram is located
underneath the front panel as shown below:
Pioneer WYT-25 Series Mini Split
9K 12K 18K 24K
Sectional Area (AWG)
Power Supply Cable
L2
14 AWG 12 AWG 10 AWG 10 AWG
L1
Connection Cable for
Communication Between
Indoor and Outdoor Units
3(L)
16 AWG 16 AWG 16 AWG 16 AWG
2(N)
1(S)
Front Panel
Wiring Diagram
Serial Number
Page 39
Indoor Unit
Installation
7
Indoor Unit Installation Instructions
Connecting the Refrigerant Piping to the Indoor Unit
Wrapping the Lines and Mounting the Indoor Unit
Torque Wrench
TIGHTENING TORQUE FOR PROTECTION CAPS AND FLANGE CONNECTION
TIGHTENING TORQUE
[N x m] (ft-lbf)
Service Port Nut
Protection Caps
[7 - 9] (5-7)
[25 - 30] (18-22)
Refrigerant
Pipe
Refrigerant
Pipe
Insulation
Sleeve
Connection
Cable
Condensed Water
Drain Pipe
(ALWAYS AT THE BOTTOM)
Covered by Vinyl Tape
Mounting Plate
Apply leak-prevention
gels or gaskets to all
mating surfaces
Once the copper piping kit coil is unwound,
refer to the below instructions to proceed:
1. Bring the ends of both the copper line and the
indoor unit line together. Align the centers of the
pipes that will be connected.
2. Remove the indoor unit piping cap, and check
that no debris is inside. Some gas may be heard
escaping, but it is dry nitrogen to keep lines clean.
3. Use any leak guard and/or flare sealers on the
flares of the piping if available. Attach the flare nut
and tighten as much as possible by hand. Torque
correctly to the specifications found in the table
below using two wrenches. Repeat the process
for the other copper line.
For mounting the indoor unit, proceed as follows:
1. Arrange the pipes, cables, and drain hose well.
2. Lag the pipe joints with insulation material, and
secure with vinyl tape as depicted in the figure.
3. Run the bound bundle through the wall hole,
and mount the indoor unit securely onto the
mounting plate. Press/push the lower part of the
indoor unit so it clicks onto the mounting plate.
Φ
Φ
Φ
Φ
Φ
Page 40
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
Mounting the Outdoor Unit to the Selected Location
Outdoor Unit Condensate Water Drainage
Drain Pipe
(disregard if
slab-mounting)
Drain Port
▪ Decide what the best position on the wall or on the ground is, and
leave enough space to be able to carry out maintenance easily.
Anchoring dimensions are provided on Page 53.
▪ If wall mounting, fasten the support brackets to the wall using
hardware that is particularly suited for the type of wall. Use the
appropriate amount of hardware for the application.
▪ The unit must be installed following all national regulations.
The outdoor unit should be installed either on a pad or on a solid wall using suitable mounting
brackets and fastened securely. Follow the procedure below before connecting any pipes or cables:
1. Fasten the drain port in the 1 inch port located in the
part of the unit depicted in the diagram.
2. Connect the drain port and the drain pipe.
3. Ensure the condensate will drain to a suitable place.
The condensate water and the ice formed in the outdoor unit during heat mode can be directed
away using the drain joint and drain pipe included with the system. This is optional and only needed
if the default configuration of water drainage out from the port on the bottom side is not desired.
Install 4 rubber pads (Optional)
Page 41
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
Outdoor Unit Installation Location Selection
Minimum Required Installation Space
20”
50cm
20”
50cm
12”
30cm
(on slab)
12”
30cm
79”
200cm
SPECIAL CONSIDERATIONS FOR EXTREME
WEATHER CONDITIONS
Follow the below best practices for selecting an optimal space for installation the indoor unit:
• DO NOT install the unit near sources of heat, steam, or flammable gases.
• DO NOT install the system in areas prone to extreme winds or dust.
• DO NOT install the outdoor unit in an area that has many passersby.
• DO select a location where the air discharge and operating sound level will not disturb others.
• DO install the system in a shaded area or utilize a cover/sun protection that will not interfere
with air flow. This will also protect the system from heavy rain or snow.
• DO install the unit in a safe and sturdy location.
• DO install rubber vibration absorbers if the system can induce vibrations in any structure.
• DO obey the following tolerances depicted in the illustration below to ensure air flow:
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 obstruct
air flow around the unit. If the unit is frequently
exposed to salty air (seaside air): Use specifically
approved anti-corrosion coating sprays onto the
heat exchanger surface in order to resist corrosion.
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, use wind baffles or build a
barrier in front of, but sufficiently away from, the
unit to protect it from extremely heavy winds.
FOR BEST LONGEVITY AND PERFORMANCE
IN PRECIPITATION/AIRFLOW/SALTY AIR
(4” when using
wall brackets)
Page 42
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
BEFORE PERFORMING
ANY ELECTRICAL WORK,
READ THESE REGULATIONS
WARNING
USE THE RIGHT CABLE
1. Prepare the cable for connection:
North America
•
Outdoor Power Cable: THHN or THWN
•
Signal Cable: TC-ER or better (AWG #16)
Minimum Cross-Sectional Area of
Power and Signal Cables
Circuit Breaker Size (A)
Wire Size (AWG)
10 18
13 16
15 14
20 12
30 10
INDOOR UNIT TERMINAL POSITION #1 connects
to OUTDOOR UNIT TERMINAL POSITION #1.
INDOOR UNIT TERMINAL POSITION #2 connects
to OUTDOOR UNIT TERMINAL POSITION #2.
INDOOR UNIT TERMINAL POSITION #3 connects
to OUTDOOR UNIT TERMINAL POSITION #3.
INDOOR UNIT TERMINAL POSITION “GROUND”
connects to OUTDOOR UNIT GROUNDING LUG
1. All wiring must comply with local and national
electrical codes, and must be installed by a
licensed electrician.
2. All electrical connections must be made
according to the Electrical Connection Diagram
located on the side panels of the indoor and
outdoor units.
3. If there is a serious safety issue with the power
supply, stop work immediately. Explain your
reasoning to the client, and suspend all
installation of the unit until the safety issue is
properly resolved.
4. Power voltage should be within 90-110% of rated
voltage range. Insufficient power supply can
cause electrical shock or fire.
5. Connect power through fixed wiring, install a
surge protector*, and disconnect switch box. Use
a dedicated circuit breaker with a capacity of 1.5
times the maximum current of the unit.
6. A properly rated HACR-type fuse or circuit
breaker that disconnects all poles and has a
contact separation of at least 1/8in (3mm) must
be incorporated in the fixed wiring. The qualified
technician must use an approved circuit breaker
or switch.
7. Only connect the unit to a dedicated individual
branch circuit breaker. Do not connect another
appliance to that same circuit.
8. Be sure to properly ground the air conditioner.
9. Every wi
re must be firmly connected. Loose
wiring can cause the terminal to overheat,
resulting in product malfunction and possible fire.
10. Do not
let wires touch or rest against refrigerant
tubing, the compressor, or any other moving
parts within the unit.
Using wire strippers, strip the rubber jacket
fromboth ends of cable to reveal about 40mm
(1.5 in) of the wires inside. Strip the insulation from
the ends of the wires. Using a wire crimper, crimp
u-lugs on the ends of the wires. Note that some
cables come with preinstalled u-lugs from factory.
BEFORE PERFORMING ANY ELECTRICAL
OR
WIRING WORK, TURN OFF THE MAIN POWER
SOURCE, OR SOURCES, TO THE SYSTEM.
*optional, highly recommended.
Page 43
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
Power/Signal Electrical Wiring to the Outdoor Unit
On the outdoor unit, the wiring diagram is located in the inner side of the handle cover.
Cover
Outdoor Unit Wiring Diagram
is located on the inside of the
wire cover on the outdoor unit.
The outside unit’s terminal block is protected by
an electrical wiring cover on the side of the unit.
A comprehensive wiring diagram is printed on
the inside of the wiring cover.
1. Unscrew and remove the handle on the
right side plate of the outdoor unit.
2. Wire the system using the appropriate
gauge wire found on page 38/42 and the
wiring diagram found on the handle cover.
See page 55 for more details.
3. Use proper flexible rain-tight conduit with
appropriate size connectors.
4. Fasten the power connection wires into
place using the supplied wire clamps.
5. Check the wiring against the diagram to
ensure it is wired correctly. A proper
ground must be established.
6. Rescrew and reinstall the cover handle.
Outdoor Handle Cover
Wiring Diagram
Serial Number
Page 43
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
Power/Signal Electrical Wiring to the Outdoor Unit
On the outdoor unit, the wiring diagram is located in the inner side of the handle cover.
Cover
Outdoor Unit Wiring Diagram
is located on the inside of the
wire cover on the outdoor unit.
The outside unit’s terminal block is protected by
an electrical wiring cover on the side of the unit.
A comprehensive wiring diagram is printed on
the inside of the wiring cover.
1. Unscrew and remove the handle on the
right side plate of the outdoor unit.
2. Wire the system using the appropriate
gauge wire found on page 38/42 and the
wiring diagram found on the handle cover.
See page 55 for more details.
3. Use proper flexible rain-tight conduit with
appropriate size connectors.
4. Fasten the power connection wires into
place using the supplied wire clamps.
5. Check the wiring against the diagram to
ensure it is wired correctly. A proper
ground must be established.
6. Rescrew and reinstall the cover handle.
Outdoor Handle Cover
Wiring Diagram
Serial Number
Page 44
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
Connection of the Refrigerant Piping
Connection Instructions –
Refrigerant Piping
Step 1: Cut pipes (If cutting lineset shorter)*
1. Measure the distance between the indoor and
outdoor units.
2. Using a rolling blade type pipe cutter, cut the pipe
a little longer than the measured distance.
3.
Make sure that the pipe is cut at a perfect 90°
angle. Refer below for bad cut examples:
Oblique Rough Warped
90°
DO NOT DEFORM PIPE
WHILE CUTTING
Be extra careful not to damage, kink, or
deform the pipe while cutting. This will
drastically reduce the efficiency and capacity
of the unit and may cause internal damage.
Step 2: Remove any burrs carefully.
Burrs can affect the air-tight seal of refrigerant
piping connection. They must be completely
removed. Follow these steps for proper deburring:
1.
Hold the pipe at a downward angle to
prevent burrs from falling into the pipe.
2.
Using a reamer or deburring tool, remove
all burrs from the cut section of the pipe.
Pipe
Reamer
Point down
Ensures no shavings
can fall inside of tubes
The length of refrigerant piping will affect the performance and energy efficiency of the unit.
Nominal efficiency is tested on units with a pipe length of 16 ft. Factory precharge is sufficient
for supporting up to 25 ft of connected lineset. Piping should not be shorter than 10 ft in length.
Refer to the table below for specifications on the maximum length and drop height of piping.
If the factory precharge is modified, make a note of the charge modification amount on Page 59.
When preparing refrigerant pipes, take extra care
to cut and flare them properly. This will ensure
efficient operation and minimize the need for
future maintenance.
*Most standard linesets are pre-flared. In case modifications are needed.
Φ Φ Φ Φ
Φ Φ Φ Φ
Page 45
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
Step 3: Flare pipe ends
Proper flaring is essential to achieve an airtight
seal.
Flare Nut
Copper Pipe
1.
After removing burrs from cut pipe, seal
the ends with PVC tape to prevent foreign
materials from entering the pipe.
2.
Sheath the pipe with insulating material.
3.
Place flare nuts on both ends of pipe. Make
sure they are facing the correct direction,
because they cannot be put on or have
their direction chaged after flaring.
4.
Remove PVC tape from ends of pipe when
ready to perform flaring work.
5.
Clamp flare form on the end of the pipe.
The end of the pipe must extend beyond the
edge of the flare form in accordance with the
dimensions shown in the following table:
PIPING EXTENSION BEYOND FLARE FORM
A (mm)Outer Diameter of
Pipe (mm)
Min. Max.
Ø 6.35 (Ø 1/4”) 1.3 (0.05”) 0.7 (0.03”)
1.0 (0.04”) 1.6 (0.06”)Ø 9.52 (Ø 3/8”)
1.0 (0.04”) 1.8 (0.07”)Ø 12.7 (Ø 1/2”)
Ø 16 (Ø 5/8”)
Ø 19 (Ø 3/4”)
2.0 (0.08”) 2.2 (0.09”)
2.0 (0.08”) 2.4 (0.1”)
Flare Form
Pipe
A
6.
Place flaring tool onto the form.
7.
Turn the handle of the flaring tool
clockwise until the pipe is fully flared.
8.
Remove the flaring tool and flare form, then
inspect the end of the pipe for cracks and
successful, even flaring.
If provided by the supplier, apply leak
guard material on all flared mating surfaces.
Do NOT use any plumbing or putty sealants.
Step 4: Connect pipes
When connecting refrigerant pipes, be careful
not to use excessive torque, or to deform the
piping in any way. One should first connect the
low-pressure pipe, then the high-pressure pipe.
Connection Pipes
Flare Nuts
Page 44
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
Connection of the Refrigerant Piping
Connection Instructions –
Refrigerant Piping
Step 1: Cut pipes (If cutting lineset shorter)*
1. Measure the distance between the indoor and
outdoor units.
2. Using a rolling blade type pipe cutter, cut the pipe
a little longer than the measured distance.
3.
Make sure that the pipe is cut at a perfect 90°
angle. Refer below for bad cut examples:
Oblique Rough Warped
90°
DO NOT DEFORM PIPE
WHILE CUTTING
Be extra careful not to damage, kink, or
deform the pipe while cutting. This will
drastically reduce the efficiency and capacity
of the unit and may cause internal damage.
Step 2: Remove any burrs carefully.
Burrs can affect the air-tight seal of refrigerant
piping connection. They must be completely
removed. Follow these steps for proper deburring:
1.
Hold the pipe at a downward angle to
prevent burrs from falling into the pipe.
2.
Using a reamer or deburring tool, remove
all burrs from the cut section of the pipe.
Pipe
Reamer
Point down
Ensures no shavings
can fall inside of tubes
The length of refrigerant piping will affect the performance and energy efficiency of the unit.
Nominal efficiency is tested on units with a pipe length of 16 ft. Factory precharge is sufficient
for supporting up to 25 ft of connected lineset. Piping should not be shorter than 10 ft in length.
Refer to the table below for specifications on the maximum length and drop height of piping.
If the factory precharge is modified, make a note of the charge modification amount on Page 59.
When preparing refrigerant pipes, take extra care
to cut and flare them properly. This will ensure
efficient operation and minimize the need for
future maintenance.
*Most standard linesets are pre-flared. In case modifications are needed.
Φ Φ Φ Φ
Φ Φ Φ Φ
Page 45
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
Step 3: Flare pipe ends
Proper flaring is essential to achieve an airtight
seal.
Flare Nut
Copper Pipe
1.
After removing burrs from cut pipe, seal
the ends with PVC tape to prevent foreign
materials from entering the pipe.
2.
Sheath the pipe with insulating material.
3.
Place flare nuts on both ends of pipe. Make
sure they are facing the correct direction,
because they cannot be put on or have
their direction chaged after flaring.
4.
Remove PVC tape from ends of pipe when
ready to perform flaring work.
5.
Clamp flare form on the end of the pipe.
The end of the pipe must extend beyond the
edge of the flare form in accordance with the
dimensions shown in the following table:
PIPING EXTENSION BEYOND FLARE FORM
A (mm)Outer Diameter of
Pipe (mm)
Min. Max.
Ø 6.35 (Ø 1/4”) 1.3 (0.05”) 0.7 (0.03”)
1.0 (0.04”) 1.6 (0.06”)Ø 9.52 (Ø 3/8”)
1.0 (0.04”) 1.8 (0.07”)Ø 12.7 (Ø 1/2”)
Ø 16 (Ø 5/8”)
Ø 19 (Ø 3/4”)
2.0 (0.08”) 2.2 (0.09”)
2.0 (0.08”) 2.4 (0.1”)
Flare Form
Pipe
A
6.
Place flaring tool onto the form.
7.
Turn the handle of the flaring tool
clockwise until the pipe is fully flared.
8.
Remove the flaring tool and flare form, then
inspect the end of the pipe for cracks and
successful, even flaring.
If provided by the supplier, apply leak
guard material on all flared mating surfaces.
Do NOT use any plumbing or putty sealants.
Step 4: Connect pipes
When connecting refrigerant pipes, be careful
not to use excessive torque, or to deform the
piping in any way. One should first connect the
low-pressure pipe, then the high-pressure pipe.
Connection Pipes
Flare Nuts
Page 46
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
MINIMUM BEND RADIUS
Radius ≥ 10cm (4 in)
When bending connective refrigerant piping,
the minimum bending radius is 10 cm (4”).
Instructions for Connecting Piping
to Outdoor Unit
the side of the outdoor unit.
1.
Unscrew the cover from the packed valve on
USE SPANNER
TO GRAB THE
BODY OF THE SERVICE VALVE
2.
Remove protective caps from the valve ends.
3.
Align flared pipe end with each valve, and
tighten the flare nut as tightly as possible
by hand.
4.
Using a spanner, grab the body of the valve.
Do not grab the nut that seals the service valve.
Torque from tightening the flare nut can snap
off other parts of valve.
5.
6.
7.
Repeat Steps 3 to 6 for the remaining pipe.
DO NOT USE EXCESSIVE TORQUE
While firmly gripping the body of the valve,
use a torque wrench to tighten the flare
nut according to the correct torque values.
Loosen the flaring nut slightly, then tighten
again.
Excessive force can break the nut or damage
the refrigerant piping. You must not exceed
the torque requirements shown in the table
shown on page 39.
Gas Side Flare Nut
Liquid Side
Flare Nut
Goes to
Indoor Unit
Protection Caps
Gas Valve
Service Port Nut
Liquid Valve
Valve Stem
Valve Stem
Valve Cover
Page 47
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
Air Evacuation and Bleeding the Circuit
Evacuation Instructions
The air and/or humidity left inside the refrigeration circuit can contaminate the refrigerant
and cause abnormal spikes in pressure, leading to eventual compressor malfunction.
Therefore, after having connected the indoor and outdoor units to create a closed system, it is
necessary to bleed the air and humidity out of the circuit through the use of a vacuum pump.
Evacuation should be performed upon initial installation or when the unit is relocated. For first time
installations, do not prematurely release the refrigerant prior to evacuation. Keep valve caps sealed.
Before using a vacuum pump and manifold gauge,
read their operation manuals to become familiarized
with using them properly.
1) Remove the caps from the 2-way and 3-way
valves (do not manipulate valves until Step 11).
2) Unscrew and remove the cap from the
service port (see diagram on right side).
3)
Connect the blue (low) hose of the
manifold gauge to service port on the
outdoor unit’s 3-way valve (use an
adapter if needed).
Ensure that the pin
fully engages the schrader valve.
4) Connect the yellow (middle) hose from the
manifold gauge to the vacuum pump.
5)
Open the low pressure knob of the manifold
gauge. Keep the high pressure valve closed.
Vacuum PumpService Port
BEFORE PERFORMING EVACUATION
Check to make sure that both high-pressure
and low-pressure pipes between the indoor
and outdoor units are connected properly
in accordance with the “Refrigerant Piping
Connection” section of this manual.
Check to make sure all wiring is connected
properly and is fully enclosed and insulated.
High Pressure
Knob
Service
Port Nut
Refrigerant Flow Direction
3-way Valve
[1] Turn
3-Way
Valve
Indoor Unit
2-way
Valve
Valve Cap
Valve Cap
Yellow (middle) hose
Vacuum Pump
3-Way Valve
Blue (low) hose
Low Pressure
Knob
Manifold Gauge
Low Pressure Gauge
High Pressure Gauge [2] Turn
[1] Turn
Step 3-5
Step 1
Step 2
Page 46
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
MINIMUM BEND RADIUS
Radius ≥ 10cm (4 in)
When bending connective refrigerant piping,
the minimum bending radius is 10 cm (4”).
Instructions for Connecting Piping
to Outdoor Unit
the side of the outdoor unit.
1.
Unscrew the cover from the packed valve on
USE SPANNER
TO GRAB THE
BODY OF THE SERVICE VALVE
2.
Remove protective caps from the valve ends.
3.
Align flared pipe end with each valve, and
tighten the flare nut as tightly as possible
by hand.
4.
Using a spanner, grab the body of the valve.
Do not grab the nut that seals the service valve.
Torque from tightening the flare nut can snap
off other parts of valve.
5.
6.
7.
Repeat Steps 3 to 6 for the remaining pipe.
DO NOT USE EXCESSIVE TORQUE
While firmly gripping the body of the valve,
use a torque wrench to tighten the flare
nut according to the correct torque values.
Loosen the flaring nut slightly, then tighten
again.
Excessive force can break the nut or damage
the refrigerant piping. You must not exceed
the torque requirements shown in the table
shown on page 39.
Gas Side Flare Nut
Liquid Side
Flare Nut
Goes to
Indoor Unit
Protection Caps
Gas Valve
Service Port Nut
Liquid Valve
Valve Stem
Valve Stem
Valve Cover
Page 47
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
Air Evacuation and Bleeding the Circuit
Evacuation Instructions
The air and/or humidity left inside the refrigeration circuit can contaminate the refrigerant
and cause abnormal spikes in pressure, leading to eventual compressor malfunction.
Therefore, after having connected the indoor and outdoor units to create a closed system, it is
necessary to bleed the air and humidity out of the circuit through the use of a vacuum pump.
Evacuation should be performed upon initial installation or when the unit is relocated. For first time
installations, do not prematurely release the refrigerant prior to evacuation. Keep valve caps sealed.
Before using a vacuum pump and manifold gauge,
read their operation manuals to become familiarized
with using them properly.
1) Remove the caps from the 2-way and 3-way
valves (do not manipulate valves until Step 11).
2) Unscrew and remove the cap from the
service port (see diagram on right side).
3)
Connect the blue (low) hose of the
manifold gauge to service port on the
outdoor unit’s 3-way valve (use an
adapter if needed).
Ensure that the pin
fully engages the schrader valve.
4) Connect the yellow (middle) hose from the
manifold gauge to the vacuum pump.
5)
Open the low pressure knob of the manifold
gauge. Keep the high pressure valve closed.
Vacuum PumpService Port
BEFORE PERFORMING EVACUATION
Check to make sure that both high-pressure
and low-pressure pipes between the indoor
and outdoor units are connected properly
in accordance with the “Refrigerant Piping
Connection” section of this manual.
Check to make sure all wiring is connected
properly and is fully enclosed and insulated.
High Pressure
Knob
Service
Port Nut
Refrigerant Flow Direction
3-way Valve
[1] Turn
3-Way
Valve
Indoor Unit
2-way
Valve
Valve Cap
Valve Cap
Yellow (middle) hose
Vacuum Pump
3-Way Valve
Blue (low) hose
Low Pressure
Knob
Manifold Gauge
Low Pressure Gauge
High Pressure Gauge [2] Turn
[1] Turn
Step 3-5
Step 1
Step 2
Page 48
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
Evacuation Instructions (Cont’d)
Service
Port Nut
OPEN VALVE STEMS GENTLY
Flare Nut
Cap
When opening valve stems, turn the supplied Allen
wrench until the valve stem comes into contact with
stopper. Do not try to force the valve to open further.
2-Way Valve
Valve Body
Valve Stem
3-Way Valve
2-Way Valve
Valve Cap
2-Way Valve
Valve Cap
3-Way Valve
[11] Open 1/4 Turn
[15] Tighten
[15] Tighten
[15] Tighten
[14] Turn to Fully
Open Valve
3-Way Valve
[14] Turn to Fully
Open Valve
Indoor Unit
Step 11
Step 14
Step 15
Indoor Unit
Indoor Unit
Do not open
either of these
valves until
evacuation steps
are completed
and system is
ready for startup
(steps 11-15)
6.
Turn on the vacuum pump to evacuate the system.
7.
Run the vacuum for at least 15 minutes, or until the
Compound Meter reads -76cmHG (-100 kPa or -30
inHg). The vacuum reading should gradually lower.
8.
Close the low pressure knob of the manifold gauge,
and turn off the vacuum pump.
9.
For best results, wait for at least 1 hour, then verify
that there has been no rise in the vacuum reading.
10.
If there is a rise in the system vacuum, refer to “Gas
Leak Check” section for information on how to check
for leaks. If no change in vacuum reading, unscrew
the cap from the service valve (high pressure valve).
11.
Insert the Allen wrench into the service valve (2-way
valve) and open the valve by turning the wrench in a
1/4 counterclockwise turn. Wait and listen for gas to
exit the system, then close the valve after 5 seconds.
(If no sound is heard or change in reading occurs, refer to page 52.)
12.
Watch the pressure gauge for a few minutes to make
sure that there is no drop in pressure. The Gauge
should now show a positive reading. From this point,
it is best to do a leak check using soapy water spray.
13 .
If no leaks, remove the charge hose from the service port.
14.
Using a hexagonal wrench, fully open both the high
pressure and low pressure valves counterclockwise.
15.
Tighten valve caps on all three valves (service port,
high pressure, low pressure) by hand. Tighten further
using a torque wrench if needed.
Page 49
Electrical/Gas
Leak Check
9
Electrical/Gas Leak Check and Test Run
ELECTRICAL SAFETY CHECKS
BEFORE TEST RUN
After installation, confirm that all electrical wiring
is installed in accordance with local and national
regulations, and according to the Installation
Manual.
DURING TEST RUN
Check Grounding Work
Measure grounding resistance by visual
detection or with a grounding resistance tester.
Grounding resistance must be less than 4Ω.
Note: This may not be required in some locations.
GAS LEAK CHECKS
There are 2 methods to check for gas leakage:
Check for Electrical Leakage
During the Test Run, use an electroprobe and
and multi-meter to perform a comprehensive
electrical leakage test.
If electrical leakage is detected, turn off the
unit immediately and call a licensed electrician
to find and resolve the cause of the leakage.
Note: This may not be required in some locations.
WARNING – RISK OF
ELECTRIC SHOCK
ALL WIRING MUST COMPLY WITH
LOCAL AND NATIONAL ELECTRICAL
CODES, AND MUST BE INSTALLED BY
A LICENSED ELECTRICIAN.
AFTER PERFORMING GAS LEAK CHECKS
After confirming that the all pipe connection
points DO NOT leak, replace the valve cover
on the outside unit.
Soap and Water Method
Using a soft brush, apply soapy water or
liquid detergent to all pipe connection
points on the indoor unit and outdoor unit.
The presence of bubbles indicates a leak.
Leak Detector Method
If using leak detector, refer to the device’s
operation manual for proper usage
instructions.
Page 48
Outdoor Unit
Installation
8
Outdoor Unit Installation Instructions
Evacuation Instructions (Cont’d)
Service
Port Nut
OPEN VALVE STEMS GENTLY
Flare Nut
Cap
When opening valve stems, turn the supplied Allen
wrench until the valve stem comes into contact with
stopper. Do not try to force the valve to open further.
2-Way Valve
Valve Body
Valve Stem
3-Way Valve
2-Way Valve
Valve Cap
2-Way Valve
Valve Cap
3-Way Valve
[11] Open 1/4 Turn
[15] Tighten
[15] Tighten
[15] Tighten
[14] Turn to Fully
Open Valve
3-Way Valve
[14] Turn to Fully
Open Valve
Indoor Unit
Step 11
Step 14
Step 15
Indoor Unit
Indoor Unit
Do not open
either of these
valves until
evacuation steps
are completed
and system is
ready for startup
(steps 11-15)
6.
Turn on the vacuum pump to evacuate the system.
7.
Run the vacuum for at least 15 minutes, or until the
Compound Meter reads -76cmHG (-100 kPa or -30
inHg). The vacuum reading should gradually lower.
8.
Close the low pressure knob of the manifold gauge,
and turn off the vacuum pump.
9.
For best results, wait for at least 1 hour, then verify
that there has been no rise in the vacuum reading.
10.
If there is a rise in the system vacuum, refer to “Gas
Leak Check” section for information on how to check
for leaks. If no change in vacuum reading, unscrew
the cap from the service valve (high pressure valve).
11.
Insert the Allen wrench into the service valve (2-way
valve) and open the valve by turning the wrench in a
1/4 counterclockwise turn. Wait and listen for gas to
exit the system, then close the valve after 5 seconds.
(If no sound is heard or change in reading occurs, refer to page 52.)
12.
Watch the pressure gauge for a few minutes to make
sure that there is no drop in pressure. The Gauge
should now show a positive reading. From this point,
it is best to do a leak check using soapy water spray.
13 .
If no leaks, remove the charge hose from the service port.
14.
Using a hexagonal wrench, fully open both the high
pressure and low pressure valves counterclockwise.
15.
Tighten valve caps on all three valves (service port,
high pressure, low pressure) by hand. Tighten further
using a torque wrench if needed.
Page 49
Electrical/Gas
Leak Check
9
Electrical/Gas Leak Check and Test Run
ELECTRICAL SAFETY CHECKS
BEFORE TEST RUN
After installation, confirm that all electrical wiring
is installed in accordance with local and national
regulations, and according to the Installation
Manual.
DURING TEST RUN
Check Grounding Work
Measure grounding resistance by visual
detection or with a grounding resistance tester.
Grounding resistance must be less than 4Ω.
Note: This may not be required in some locations.
GAS LEAK CHECKS
There are 2 methods to check for gas leakage:
Check for Electrical Leakage
During the Test Run, use an electroprobe and
and multi-meter to perform a comprehensive
electrical leakage test.
If electrical leakage is detected, turn off the
unit immediately and call a licensed electrician
to find and resolve the cause of the leakage.
Note: This may not be required in some locations.
WARNING – RISK OF
ELECTRIC SHOCK
ALL WIRING MUST COMPLY WITH
LOCAL AND NATIONAL ELECTRICAL
CODES, AND MUST BE INSTALLED BY
A LICENSED ELECTRICIAN.
AFTER PERFORMING GAS LEAK CHECKS
After confirming that the all pipe connection
points DO NOT leak, replace the valve cover
on the outside unit.
Soap and Water Method
Using a soft brush, apply soapy water or
liquid detergent to all pipe connection
points on the indoor unit and outdoor unit.
The presence of bubbles indicates a leak.
Leak Detector Method
If using leak detector, refer to the device’s
operation manual for proper usage
instructions.
Page 50
9
Electrical/Gas Leak Check and Test Run
Test Run
PASS/FAIL?
BEFORE TEST RUN
Only perform a test run after the following
steps have been completed:
No Electrical Leaks or Abnormal Noises
Unit is Properly Grounded
All Electrical Terminals Properly Covered
Indoor and Outdoor Units Securely Installed
All Pipe Connections Points Do Not Leak
Water Drains From Drain Hose Properly
All Piping is Properly Insulated
Indoor Unit Responds to Remote Controller
Indoor Unit Louvers Work Properly
System Works in Both HEAT + COOL mode
TEST RUN INSTRUCTIONS
Opened Valves
Confirm that both the gas and liquid
valves (high/low) are 100% fully opened.
The following test run should be performed
for 30 minutes:
Electrical Safety Checks
Confirm that the unit’s electrical system is
safe and is operating properly.
Gas Leak Checks
Check all flare nut connections and confirm
that the system is not leaking.
AFTER TEST RUN COMPLETION
After the 10 boxes above have been checked as having PASSED, perform the following operation:
1. Using the remote control, return the system to a normal desired operating temperature.
2. Using insulation tape, wrap the indoor unit refrigerant pipe connections that were left uncovered
during the indoor unit installation process.
IF AMBIENT TEMPERATURES ARE TOO HIGH TO RUN A HEATING TEST:
If outside temperatures are too high to permit HEATING mode on the remote, do the following:
1. Turn the unit on and put it in heat mode using the emergency button as depicted on Page 8.
2. Run the heating mode test as normal, and turn the unit back off using the button when complete.
DOUBLE CHECK ALL PIPE CONNECTIONS
During operation, the pressure of the refrigerant circuit will increase. This may reveal leaks that
were not present during your initial leak check. Take time during the Test Run to double-check
that all copper pipe connection points are leak-free. Refer to the Leak Check page for instructions.
Cooling mode pressures should be 120-155 PSI. Heating mode pressures should be 320-450 PSI.
perform the following checks:
4.
Let each function run for 5 minutes, and
• COOL – Select lowest possible temperature
• HEAT – Select highest possible temperature
1. Connect power to the unit.
2.
Press the ON/OFF button on the remote
controller to turn it on.
3. Press the MODE button to scroll through
the following functions, one at a time:
Test Run
Page 50
9
Electrical/Gas Leak Check and Test Run
Test Run
PASS/FAIL?
BEFORE TEST RUN
Only perform a test run after the following
steps have been completed:
No Electrical Leaks or Abnormal Noises
Unit is Properly Grounded
All Electrical Terminals Properly Covered
Indoor and Outdoor Units Securely Installed
All Pipe Connections Points Do Not Leak
Water Drains From Drain Hose Properly
All Piping is Properly Insulated
Indoor Unit Responds to Remote Controller
Indoor Unit Louvers Work Properly
System Works in Both HEAT + COOL mode
TEST RUN INSTRUCTIONS
Opened Valves
Confirm that both the gas and liquid
valves (high/low) are 100% fully opened.
The following test run should be performed
for 30 minutes:
Electrical Safety Checks
Confirm that the unit’s electrical system is
safe and is operating properly.
Gas Leak Checks
Check all flare nut connections and confirm
that the system is not leaking.
AFTER TEST RUN COMPLETION
After the 10 boxes above have been checked as having PASSED, perform the following operation:
1. Using the remote control, return the system to a normal desired operating temperature.
2. Using insulation tape, wrap the indoor unit refrigerant pipe connections that were left uncovered
during the indoor unit installation process.
IF AMBIENT TEMPERATURES ARE TOO HIGH TO RUN A HEATING TEST:
If outside temperatures are too high to permit HEATING mode on the remote, do the following:
1. Turn the unit on and put it in heat mode using the emergency button as depicted on Page 8.
2. Run the heating mode test as normal, and turn the unit back off using the button when complete.
DOUBLE CHECK ALL PIPE CONNECTIONS
During operation, the pressure of the refrigerant circuit will increase. This may reveal leaks that
were not present during your initial leak check. Take time during the Test Run to double-check
that all copper pipe connection points are leak-free. Refer to the Leak Check page for instructions.
Cooling mode pressures should be 120-155 PSI. Heating mode pressures should be 320-450 PSI.
perform the following checks:
4.
Let each function run for 5 minutes, and
• COOL – Select lowest possible temperature
• HEAT – Select highest possible temperature
1. Connect power to the unit.
2.
Press the ON/OFF button on the remote
controller to turn it on.
3. Press the MODE button to scroll through
the following functions, one at a time:
Test Run
Page 51
Troubleshooting
T
Troubleshooting
MALFUNCTION
If there are strange odors...
If there’s running water...
If the display is off...
If a fine mist is coming
from the air outlet...
If the airflow is
insufficient, and the
air is not hot or cold
enough...
If the appliance does not
respond to commands...
If the appliance
does not operate
or respond...
ERROR SIGNALS ON THE DISPLAY
Switch off the air
conditioner immediately
and cut off the power
supply in the event of...
POSSIBLE CAUSES
There is a power failure/plug pulled out or tripped/wrong breaker (wrong wiring)
There is a faulty compressor or thermomagnetic circuit breaker
The indoor/outdoor unit fan motor was damaged
The electrical connections are loose
There is a faulty protective device or fuses
The system has entered a protection mode
The system has entered an overvoltage or undervoltage protection
The air filter is dirty
The electronic control board was damaged
The TIMER-ON function is active
There was a backflow of condensate water into the system’s drain pan.
This occurs when the air in the room becomes very cold, for example in
“COOLING” or “DEHUMIDIFICATION/DRY” modes
The temperature setting is unsuitable
The air conditioner intakes and outlets may be obstructed
The fan speed may be set at the minimum
This noise is made by the expansion or contraction of the front panel due
to variations in temperature, and if so, is normal
The air filter may be dirty
The system may be getting low on refrigerant, pressures should be checked
There may be too many other heat sources in the room
The remote control may not be close enough to the indoor unit
The batteries of remote control may need to be replaced
There are obstacles between remote control and indoor unit signal receiver
The DISPLAY button has been pressed
Strange noises not due to expansion/contraction are heard during operation
There has been a power failure
The electronic control board is faulty or malfunctioning
Any fuses or switches are faulty or malfunctioning
The sound of spraying water or objects are heard inside the appliance
The cables or plugs have overheated
There are very strong odors being emitted from the appliance
If strange noises are
being emitted...
Indoor temperature sensor fault
Display
Description of the error
Outdoor pipe temperature sensor fault
Indoor pipe temperature sensor fault
Malfunction of indoor fan motor
Refrigerant system leakage or fault
Outdoor air temperature sensor fault
Outdoor discharge temperature sensor fault
Display
Outdoor IPM module fault
Indoor Outdoor Unit Communication Fault
Outdoor current detection fault
Description of the trouble
In case of error, the display on the indoor unit may show the following error codes:
Outdoor suction temperature sensor fault
Refrigerant Leak / Low Pressure Detected
Do not attempt to use system until error code is diagnosed and resolved. Forcing the system to run can cause irreversible damage.
Page 52
T
Troubleshooting
Troubleshooting
Solutions to Commmon Issues and Scenarios
• Issue: The Indoor Air Handler Does Not Turn On.
▪ Solution: Verify that the wire order is equal between indoor and outdoor units
[1]
. Color
order must match. Check for splices or damage on the control cable. To rule out
variables, remove any accessorial items such as UV lights or condensate pumps until
the problem is resolved.
▪ Solution For 230V systems: Use a multi-meter to check AC voltage across terminals
L1-L2 on the outdoor system
[2]
(touch one probe to L1, the other probe goes on L2, do
not measure each leg to ground). Verify whether the reading is between 208~253 VAC.
◦ If the reading is between 208 and 253 VAC, measure whether the reading is
the same across 2-3 on both the outdoor unit, and the indoor unit. All readings
must match. The system must receive a full 230V reading in order to function.
◦ If the reading is 0 VAC, then the system is not receiving proper power from the
power source. Some common reasons are:
▫ A fused disconnect is being used, but fuses are blown or not inserted properly.
▫ The disconnect box bus-bar is in the OFF position.
• Issue: The pressure reading does not rise when releasing refrigerant during leak check.
▪ Solution: Verify that the gauge tube pin on the manifold gauge is fully engaging the outdoor unit
service port’s Schrader valve. A pin that is over or underexposed will not allow the gauge to access
the refrigerant circuit, preventing pressure measurement and/or proper vacuuming. The depressor
pin inside the hose connector is adjustable for proper Schrader valve engagement.
◦ A telltale sign that this is happening is whether the gauge reading goes to instant vacuum
when the pump is first turned on. This means only the gauge is being vacuumed.
◦ If so, vacuuming will need to be re-performed, since only the gauge itself was vacuumed.
• Issue: The system is not holding a vacuum.
▪ Solution: A leak in the gauge hoses is likely. Repair the leak and/or check the vacuum pump.
▪ Solution: Check the connection points for proper contact and torque and tighten if necessary.
• Issue: The indoor air handler is leaking water
▪ Solution: Verify that the indoor unit is both horizontally and vertically level.
▪ Solution: Check that the drain tube is at a continuous downward pitch.
◦ Pour a cup of water over the indoor unit’s coils so that it reaches the drain pan.
◦ Verify that the water drains out of the tube freely. If it doesn’t, find the cause and correct it.
• Issue: The system indicates that a refrigerant leak is present.
▪ Solution: Cut off power to the system. Prepare a soapy water spray, and spray the connection
points of the line set. The point where bubbles form is where the leak is located. Tighten the
connection and re-test the system. Have the system re-charged only after the leak is repaired.
• Issue: The fan runs in cooling mode but in heating mode there is weak or no airflow.
▪ Solution: Fan speed control is typically not available to the user in heating mode. If the coil is
unable to heat up then the fan will not run at speed. This may indicate low refrigerant as well.
230V
▫ A double-pole breaker is not being used. Single or tandem breakers will not work.
▪ Solution: Try the manual emergency button on the indoor unit, to rule out problems with the remote.*
*See Page 8
INDOOR
UNIT
OUTDOOR
UNIT
[1]
[2]
Page 53
A
Appendix
Appendix
Anchoring the Outdoor Unit
The outdoor unit can be anchored to the ground or to wall-mounted brackets. The following
is a list of different outdoor unit sizes and the distance between their mounting feet. Prepare
the installation base of the unit according to the dimensions found below:
If installing the unit on the ground or on a
concrete mounting platform, do the following:
5. Hammer expansion bolts into each hole.
Underside View Front View Side View
6. Remove the nuts from expansion bolts, and
place the outdoor unit onto the bolts.
replace each of the nuts.
7. Put washers onto each expansion bolt, then
1. Mark the positions for four expansion bolts
based on dimensions in the “Unit Mounting
Dimensions” chart.
2. Pre-drill holes for expansion bolts.
3. Clean concrete dust away from holes.
4. Place a nut on the end of each expansion bolt.
Using a wrench, tighten each nut until snug.8.
WHEN DRILLING INTO CONCRETE,
WEAR EYE PROTECTION AT ALL TIMES!
FD
G
IH
J
K
E
Air Inlet
Air Inlet
Valve Set
Air Outlet
(When mounting on slab, installation of drain joint and tubing shown on page 40 is not necessary.)
Model D E F G H I J K
YN009GLSI25RPH
(9000 BTU - 230V)
YN012GLSI25RPH
(12000 BTU - 230V)
YN018GLSI25RPH
(18000 BTU - 230V)
YN024GLSI25RPH
(24000 BTU - 230V)
Page 52
T
Troubleshooting
Troubleshooting
Solutions to Commmon Issues and Scenarios
• Issue: The Indoor Air Handler Does Not Turn On.
▪ Solution: Verify that the wire order is equal between indoor and outdoor units
[1]
. Color
order must match. Check for splices or damage on the control cable. To rule out
variables, remove any accessorial items such as UV lights or condensate pumps until
the problem is resolved.
▪ Solution For 230V systems: Use a multi-meter to check AC voltage across terminals
L1-L2 on the outdoor system
[2]
(touch one probe to L1, the other probe goes on L2, do
not measure each leg to ground). Verify whether the reading is between 208~253 VAC.
◦ If the reading is between 208 and 253 VAC, measure whether the reading is
the same across 2-3 on both the outdoor unit, and the indoor unit. All readings
must match. The system must receive a full 230V reading in order to function.
◦ If the reading is 0 VAC, then the system is not receiving proper power from the
power source. Some common reasons are:
▫ A fused disconnect is being used, but fuses are blown or not inserted properly.
▫ The disconnect box bus-bar is in the OFF position.
• Issue: The pressure reading does not rise when releasing refrigerant during leak check.
▪ Solution: Verify that the gauge tube pin on the manifold gauge is fully engaging the outdoor unit
service port’s Schrader valve. A pin that is over or underexposed will not allow the gauge to access
the refrigerant circuit, preventing pressure measurement and/or proper vacuuming. The depressor
pin inside the hose connector is adjustable for proper Schrader valve engagement.
◦ A telltale sign that this is happening is whether the gauge reading goes to instant vacuum
when the pump is first turned on. This means only the gauge is being vacuumed.
◦ If so, vacuuming will need to be re-performed, since only the gauge itself was vacuumed.
• Issue: The system is not holding a vacuum.
▪ Solution: A leak in the gauge hoses is likely. Repair the leak and/or check the vacuum pump.
▪ Solution: Check the connection points for proper contact and torque and tighten if necessary.
• Issue: The indoor air handler is leaking water
▪ Solution: Verify that the indoor unit is both horizontally and vertically level.
▪ Solution: Check that the drain tube is at a continuous downward pitch.
◦ Pour a cup of water over the indoor unit’s coils so that it reaches the drain pan.
◦ Verify that the water drains out of the tube freely. If it doesn’t, find the cause and correct it.
• Issue: The system indicates that a refrigerant leak is present.
▪ Solution: Cut off power to the system. Prepare a soapy water spray, and spray the connection
points of the line set. The point where bubbles form is where the leak is located. Tighten the
connection and re-test the system. Have the system re-charged only after the leak is repaired.
• Issue: The fan runs in cooling mode but in heating mode there is weak or no airflow.
▪ Solution: Fan speed control is typically not available to the user in heating mode. If the coil is
unable to heat up then the fan will not run at speed. This may indicate low refrigerant as well.
230V
▫ A double-pole breaker is not being used. Single or tandem breakers will not work.
▪ Solution: Try the manual emergency button on the indoor unit, to rule out problems with the remote.*
*See Page 8
INDOOR
UNIT
OUTDOOR
UNIT
[1]
[2]
Page 53
A
Appendix
Appendix
Anchoring the Outdoor Unit
The outdoor unit can be anchored to the ground or to wall-mounted brackets. The following
is a list of different outdoor unit sizes and the distance between their mounting feet. Prepare
the installation base of the unit according to the dimensions found below:
If installing the unit on the ground or on a
concrete mounting platform, do the following:
5. Hammer expansion bolts into each hole.
Underside View Front View Side View
6. Remove the nuts from expansion bolts, and
place the outdoor unit onto the bolts.
replace each of the nuts.
7. Put washers onto each expansion bolt, then
1. Mark the positions for four expansion bolts
based on dimensions in the “Unit Mounting
Dimensions” chart.
2. Pre-drill holes for expansion bolts.
3. Clean concrete dust away from holes.
4. Place a nut on the end of each expansion bolt.
Using a wrench, tighten each nut until snug.8.
WHEN DRILLING INTO CONCRETE,
WEAR EYE PROTECTION AT ALL TIMES!
FD
G
IH
J
K
E
Air Inlet
Air Inlet
Valve Set
Air Outlet
(When mounting on slab, installation of drain joint and tubing shown on page 40 is not necessary.)
Model D E F G H I J K
YN009GLSI25RPH
(9000 BTU - 230V)
YN012GLSI25RPH
(12000 BTU - 230V)
YN018GLSI25RPH
(18000 BTU - 230V)
YN024GLSI25RPH
(24000 BTU - 230V)
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Appendix
Appendix
Guidelines for Drilling the Wall Hole
Below are the suggested locations for the wall hole for systems between 9,000 - 24,000 BTU. Both
left side/right side exits are considered with 2-1/2” hole. Confirm holes are proper by corner tracing.
(For 9K Systems)
All Distances in Inches
(For 12K BTU Systems)
All Distances in Inches
Left Side Exit
Right Side Exit
Left Side Exit
Right Side Exit
32-1/4 in
12 in
1-3/4 in
6-3/4 in
17-1/4 in
ø 2-1/2 in
ø 2-1/2 in
1-3/4 in
5-5/8 in
36-1/4 in
12 in
1 3/4 in
6-3/4 in
ø 2 1/2 in
9-3/8 in
17-1/4 in
1-3/4 in
ø 2-1/2 in
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Appendix
Appendix
Guidelines for Drilling the Wall Hole (continued)
Simplified Wiring Diagram (230V)
Right Side ExitLeft Side Exit
(For 18K, 24K Systems)
All Distances in Inches
Signal Cable to Outdoor Unit
Indoor Unit Terminal Block
1 ( S )
2(
N
)
3( L
)
13 in
43-1/4 in
ø 2-1/2 in
ø 2-1/2 in
9-3/4 in
1-3/4 in
6-7/8 in
22-3/8 in
1-3/4 in
Page 54
A
Appendix
Appendix
Guidelines for Drilling the Wall Hole
Below are the suggested locations for the wall hole for systems between 9,000 - 24,000 BTU. Both
left side/right side exits are considered with 2-1/2” hole. Confirm holes are proper by corner tracing.
(For 9K Systems)
All Distances in Inches
(For 12K BTU Systems)
All Distances in Inches
Left Side Exit
Right Side Exit
Left Side Exit
Right Side Exit
32-1/4 in
12 in
1-3/4 in
6-3/4 in
17-1/4 in
ø 2-1/2 in
ø 2-1/2 in
1-3/4 in
5-5/8 in
36-1/4 in
12 in
1 3/4 in
6-3/4 in
ø 2 1/2 in
9-3/8 in
17-1/4 in
1-3/4 in
ø 2-1/2 in
Page 55
A
Appendix
Appendix
Guidelines for Drilling the Wall Hole (continued)
Simplified Wiring Diagram (230V)
Right Side ExitLeft Side Exit
(For 18K, 24K Systems)
All Distances in Inches
Signal Cable to Outdoor Unit
Indoor Unit Terminal Block
1 ( S )
2(
N
)
3( L
)
13 in
43-1/4 in
ø 2-1/2 in
ø 2-1/2 in
9-3/4 in
1-3/4 in
6-7/8 in
22-3/8 in
1-3/4 in
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Appendix
Appendix
Control Board Wiring Diagrams
INDOOR UNIT: WT009GLSI25HLH, WT012GLSI25HLH, WT018GLSI25HLH, WT024GLSI25HLH
OUTDOOR UNIT: YN009GLSI25RPH, YN012GLSI25RPH, YN018GLSI25RPH, YN024GLSI25RPH
OUTDOOR UNIT
YE(BY)
INDOOR
WH(BU)
UNIT
BK(BN)
POWER
GN(GNYE)
SUPPLY
WH(BU)
BK(BN)
GN(GNYE)
BK
GNYE(GN)
BU
BU
BN
BN
P3(S)
P2(AC-N)
PO(GND)/POO
P1(AC-L)
P01(GND)
P13(L1)
1
2
3
L2
L1
P14(L2)
U
V
W
U
V
W
RD
RD
WH
WH
BU
BU
COMP
BCP
OUTDOOR ENVIRONMENT TEMP. SENSOR
OUTDOOR PIPE TEMP. SENSOR
OUTDOOR EXHAUST TEMP. SENSOR
EEV
HEATER
ELECTRONIC EXPANSION VALVE
CN11
CN7
CN3
CN2/CN1
CN12-2
CN12-1
EXTERNAL DRIVE
P8(VAL)
CN410
P9
CN12-2
(P9)
GNYE
VALVE
MOTOR
DC FAN
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Appendix
Appendix
For Systems with Additional Leakage Sensor (If Applicable)
Condition Error Code
Refrigerant Leak Detected Display “Hd”
Communication Error with Refrigerant Sensor Display “Fd”
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Appendix
Appendix
For Systems with Additional Leakage Sensor (If Applicable)
Condition Error Code
Refrigerant Leak Detected Display “Hd”
Communication Error with Refrigerant Sensor Display “Fd”
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Appendix
Appendix
Product Disposal Guidelines
This appliance contains refrigerant and other potentially hazardous materials. When disposing of
this appliance, the law requires special collection and treatment. Do not dispose of this product as
household waste or unsorted municipal waste.
When disposing of this appliance, you have the following options:
All refrigerant and oil must be removed prior to disposal as outlined within this manual.
Special Notice
• Dispose of the appliance at a designated municipal electronic waste collection facility.
• When buying a new appliance, the retailer takes back the old appliance free of charge.
• The manufacturer takes back the old appliance free of charge.
• Sell the appliance to certified scrap metal dealers.
Disposing of this appliance improperly, or in other natural surroundings, endangers your health
and is bad for the environment. Hazardous substances may leak into the ground water and enter
the food chain. Please follow proper disposal protocol.
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Appendix
Appendix
If Refrigerant Has Been Added to the System During Install
System Notes
(For the Installer) Please fill in the following:
1) The factory refrigerant charge of the product (located on the outdoor unit nameplate).
2) The additional refrigerant charged into product.
1+2) The total refrigerant charge.
Instruct the user to retain this information for reference during future service and maintenance.
kg (ozs)
kg (ozs)
kg (ozs)
Page 59
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Appendix
Appendix
If Refrigerant Has Been Added to the System During Install
System Notes
(For the Installer) Please fill in the following:
1) The factory refrigerant charge of the product (located on the outdoor unit nameplate).
2) The additional refrigerant charged into product.
1+2) The total refrigerant charge.
Instruct the user to retain this information for reference during future service and maintenance.
kg (ozs)
kg (ozs)
kg (ozs)
The design and specifications of this product are subject to change without prior notice
as development continues. Consult with the sales agency or manufacturer for details.
Refer to the equipment nameplate for all other applicable specifications.
Copyright 2025, Parker Davis HVAC International, LLC., All rights reserved.
is a registered trademark of Parker Davis HVAC International, LLC.
Parker Davis HVAC International
7290 NW 77 Court, Miami, FL 33166 - USA
Tel
: (305) 513-4488
Fax
: (305) 513-4499
E-mail
Website: www.pdhvac.com
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