DURASTAR DRA2U18M1B User manual

DURASTAR.COM1
INSTALLATION MANUAL
MULTI-ZONE OUTDOOR UNIT
SPLIT-STYLE AIR CONDITIONER
DRA2U18M1B, DRA3U28M1B, DRA4U36M1B, DRA5U48M1B
Model Number:
Serial Number:
Purchase Date:
Installing Contractor Company Name:
TIP
Capture relevant information about your Durastar mini-split equipment before it is
installed and write it above for future reference.

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TABLE OF CONTENTS
TABLE OF CONTENTS.................................................................................................... 2
INTRODUCTION ................................................................................................................. 3
WARNINGS ........................................................................................................................... 3
IMPORTANT SAFETY PRECAUTIONS ................................................................... 4
OPERATING TEMPERATURES................................................................................... 7
ACCESSORIES..................................................................................................................... 8
PARTS IDENTIFICATION ................................................................................................ 9
OUTDOOR UNIT INSTALLATION.............................................................................10
STEP 1: SELECT INSTALLATION LOCATION ....................................................10
STEP 2: INSTALL THE DRAIN JOINT ..................................................................... 11
STEP 3: MOUNT THE OUTDOOR UNIT.................................................................12
STEP 4: CONNECT THE SIGNAL AND POWER CABLES............................ 13
REFRIGERANT PIPING CONNECTIONS...............................................................15
STEP 1: CUT PIPES........................................................................................................... 17
STEP 2: REMOVE BURRS............................................................................................. 17
STEP 3: FLARE PIPE ENDS......................................................................................... 18
STEP 4: CONNECT PIPES.............................................................................................19
SYSTEM EVACUATION ..................................................................................................20
FINAL CHECKS...................................................................................................................22
TEST RUN .............................................................................................................................23
TROUBLESHOOTING.....................................................................................................24
WIRING DIAGRAMS.........................................................................................................28
ERROR AND OPERATING CODES ..........................................................................32
JOB SITE INFORMATION SHEET.............................................................................33

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WARNINGS
The warning symbol indicates cautionary information for the user. Extra care and
precautions should be taken to ensure the user's safety.
The pencil indicates any manufacturer notes relating to surrounding content. These may
include further clarifications or call-outs.
A light bulb symbol indicates suggested manufacturer tips for the user to get the most
out of the Durastar equipment and to accommodate the best user experience.
Symbols Used in This Manual
INTRODUCTION
To better serve you, please do the following before contacting customer service:
• If you received a damaged product, immediately contact the retailer or dealer that sold you the
product.
• Read and follow this owner's manual carefully to help you use and maintain your air conditioner.
• Read the troubleshooting section of this manual as it will help you diagnose and solve common
issues.
• Visit us on the web at WWW.DURASTAR.COM to download product guides and up-to-date
information.
• If you need warranty service, our friendly customer service representatives are available via
email at [e-mail] or by telephone at 1-888-320-0706.

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IMPORTANT SAFETY PRECAUTIONS
Improper handling can cause serious damage or injury. Please read the following safety
information in its entirety.
Operation, Cleaning, and Maintenance Safety Precautions
• Children and people with reduced physical, sensory, or mental capabilities, or lack of
experience and knowledge, should only use this air conditioner if they are given supervision or
instructions concerning use of the air conditioner in a safe way and understand the hazards
involved.
• Children should not play with the air conditioner.
• Never stick fingers or any other body parts into the air conditioner openings. The internal fan
may be rotating at high speeds, and may result in injury.
• After removing the filter, do not touch the fins in order to avoid injury.
• Maintenance must be performed by qualified professionals. Otherwise, you may experience
personal injury or damage to the air conditioner and surrounding property.
• Do not repair the air conditioner by yourself. It may cause electric shock or damage. Please
contact a qualified service representative when you need to repair the air conditioner.
• Do not block the air outlet or air inlet. This could cause a malfunction.
• Do not spill water on the remote control as this can permanently damage the remote.
• If the below problems occur, please turn off the air conditioner and disconnect power at the
circuit breaker immediately. Then contact your dealer or a qualified professional for service.
− The power cord is overheating or damaged.
− There is an abnormal sound during operation.
− The circuit breaker trips frequently.
− The air conditioner gives off a burning smell.
− The indoor unit is leaking.
• If the air conditioner operates under abnormal conditions, it may cause malfunctions, electric
shock, or fire hazard.
• When turning the unit on or off via the emergency operation switch, press the switch with an
insulated object other than metal.
• Do not step on the top panel of the unit, or put heavy objects on the top panel. This could
cause damage or personal injury.
• Cleaning and user maintenance should not be performed by children without supervision.
• Do not spray water on the indoor unit. This could cause electric shock or a unit malfunction.
• Do not use flammable materials such as hair spray, lacquer, or paint near the air conditioner as
they may catch fire.
• Do not operate the air conditioner in places near combustible gases. Emitted gases may
collect around the air conditioner and cause an explosion.
• Do not use fire or a hair dryer to dry the filter. This could cause a deformation or fire hazard.
• Do not wash the air conditioner with water as this could cause an electric shock.
• Disconnect the power supply by turning it off at the circuit breaker when cleaning the air
conditioner. Otherwise, you could risk electric shock.

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Electrical Safety
• Do not modify the length of the power supply cord or use an extension cord to power the unit.
• If the supply cord is damaged, it must be replaced by the manufacturer, a service agent, or a
similarly qualified person in order to avoid a safety hazard.
• Do not share the electrical outlet with other appliances. Improper or insufficient power supply
can cause fire or electrical shock.
• The product must be properly grounded at the time of installation, or electrical shock may
occur.
• For all electrical work, follow all local and national wiring standards and regulations. Connect
cables tightly, and clamp them securely to prevent external forces from damaging the
terminal. Improper electrical connections can overheat and cause fire, and may also cause
shock. All electrical connections must be made according to the Electrical Connection
Diagram located on the panels of the indoor and outdoor units.
• All wiring must be properly arranged to ensure that the control board cover can close properly.
If the control board cover is not closed properly, it can lead to corrosion and cause the
connection points on the terminal to heat up, catch fire, or cause electrical shock.
• The air conditioner’s circuit board (PCB) is designed with a fuse to provide over-current
protection. The specifications of the fuse are printed on the circuit board.

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Installation Safety
• Installation must be performed by an authorized dealer or specialist. Improper installation
can cause water leakage, electrical shock, or fire. (In North America, installation must be
performed in accordance with NEC and CEC requirements by authorized personnel only.)
• Installation must be performed according to the installation instructions. Improper installation
can cause water leakage, electrical shock, or fire.
• This air conditioner shall be installed in accordance with national and local wiring regulations.
• Contact an authorized service technician for repair or maintenance of this unit.
• Only use the included accessories, parts, and specified parts for installation. Using non-
standard parts can cause water leakage, electrical shock, fire, and can cause the unit to fail.
• Install the unit in a firm location that can support the unit’s weight. If the chosen location
cannot support the unit’s weight, or the installation is not done properly, the unit may fall and
cause serious injury and damage.
• Install drainage piping according to the instructions in the installation manual. Improper
drainage may cause water damage to your home and property.
• For units that have an auxiliary electric heater, do not install the unit within 3 feet (1 meter) 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 a fire.
• Do not turn on the power until all work has been completed.
• When moving or relocating the air conditioner, consult experienced service technicians for
disconnection and re-installation of the unit.
Additional Precautions
• Turn off the air conditioner and disconnect the power if you are not going to use it for a long
time.
• Turn off the unit during electrical storms to avoid damaging the unit.
• Make sure that water condensation can drain unhindered from the unit.
• Do not operate the air conditioner with wet hands. This may cause electric shock.
• Do not use this device for any other purpose than its intended use.
• Do not climb onto or place objects on top of the outdoor unit.
• Do not allow the air conditioner to operate for long periods of time with doors or windows
open, or if the humidity is very high.

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Your air conditioner is designed to operate in the following indoor and outdoor temperatures.
When your air conditioner is used outside of the following temperature ranges, certain safety
features may activate and turn off the unit to protect it from damage.
TEMPERATURE RANGES
COOL mode HEAT mode DRY mode
Indoor Air
Temperature
62°F - 90°F
(17°C - 32°C)
32°F - 86°F
(0°C - 30°C)
50°F - 90°F
(10°C - 32°C)
Outdoor Air
Temperature
-13°F - 122°F
(-25°C - 50°C)
-13°F - 86°F
(-25°C - 30°C)
32°F - 122°F
(0°C - 50°C)
To further optimize the performance of your unit, do the following:
• Keep doors and windows closed.
• Limit energy usage by using TIMER ON and TIMER OFF features.
• Do not block air inlets or outlets.
• Regularly inspect and clean air filters.
OPERATING TEMPERATURES
NOTE
Keep the room's relative humidity below 80%. If the air conditioner operates in excess
of this, the surface of the air conditioner may attract condensation. To help prevent
condensation from forming and dripping, set the vertical airflow louver to its maximum
angle (vertically to the floor) and set the fan to HIGH.
NOTE
Your Durastar air conditioner's outdoor unit is equipped with a base pan heater, allowing
it to continue to operate at freezing temperatures as low as -13°F (-25°C). When outdoor
air temperatures are at or below 32°F (0°C), we strongly recommend keeping the unit
plugged in at all times to ensure smooth ongoing performance.

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INCLUDED INSTALLATION ACCESSORIES
The air conditioning system comes with the following accessories. They may vary by model.
FIELD SUPPLIED INSTALLATION ACCESSORIES
The following installation accessories may be required and must be purchased separately.
• Refrigerant lines
• Indoor and outdoor connection wire
• Outdoor power supply cord
• Drain hose
• Pipe and cable wrapping tape
• Wall hole sleeve and cover
• Putty
• Suspension bolts and necessary hardware to hang indoor unit (if necessary)
• Wiring u-lugs
Accessory Quantity Image Accessory Quantity Image
User Manual 1 Refrigerant
Pipe Adapter
(3/8"-1/2")
2-3
Drain Joint 1 Refrigerant
Pipe Adapter
(1/2"-3/8")
0-2
Drain Joint Seal 1 Refrigerant
Pipe Adapter
(1/2"-5/8")
0-2
Rubber Foot 4 Refrigerant
Pipe Adapter
(1/4"-3/8")
0-2
ACCESSORIES
TOOLS NEEDED
The following tools may be required for installation.
• Phillips screwdriver
• Drill with 2 1/2" or 3 1/2" (indoor unit model
depending) core bit
• Vacuum pump
• HVAC manifold gauge set
• Micron Gauge
• Refrigerant leak detector
• Copper pipe cutter
• Flaring tool
• Burr reamer
• Crescent or spanner wrench
• Hexagonal wrench set
• Torque wrench
• Hammer
• Wire strippers
• Wire crimper
• Multimeter
• Electroprobe
• Level

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PARTS IDENTIFICATION
NOTE
Illustrations in this manual are for explanatory purposes. The actual shape of your mini-
split equipment may vary slightly. Indoor units may also vary in configuration.
DRA2U18M1B
DRA3U28M1B
DRA4U36M1B
DRA5U48M1B
Air Inlets
Air Outlet
Refrigerant Valves
Signal Cable,
Refrigerant Pipes,
and Drain Pipe
Wiring Terminal
Power
Supply
WARNING
When installing a Multi-zone outdoor unit, a minimum of 2 associated indoor units
must be installed and operational for the system to operate properly.

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OUTDOOR UNIT INSTALLATION
STEP 1: SELECT INSTALLATION LOCATION
Before installing the outdoor unit, you must choose an appropriate location. The following are
standards that will help you choose an appropriate location for the unit.
Proper installation locations meet the following standards:
• Meets all spatial requirements shown in installation space requirements above.
• Good air circulation and ventilation.
• Firm and solid location —the location can support the unit's weight and will not vibrate.
• Noise from the unit will not disturb others.
• Protected from prolonged periods of direct sunlight or rain.
24” (610)
on right
12” (305)
on left
79” (2007)
in front
12” (305)
from back wall
24” (610)
above
DO NOT install unit in the following locations:
• Near an obstacle that will block air inlets and outlets.
• Near a public street, crowded areas, or where noise from the unit will disturb others.
• Near animals or plants that will be harmed by hot air discharge.
• Near any source of combustible gas.
• In a location that is exposed to large amounts of dust.
• In a location exposed to an excessive amount of salty air.
NOTE
Where snowfall is anticipated, raise the unit above the base pad to prevent ice buildup
and coil damage. Mount the unit high enough to be above the average accumulated
area snowfall. The minimum height must be 18 inches.
NOTE
The installation must be performed in accordance with the required local and national
standard. The installation may be slightly different in certain areas.