Durastar DRA2H18M1A Sirius Heat Outdoor Condenser Instruction Manual
- June 10, 2024
- DURASTAR
Table of Contents
DRA2H18M1A Sirius Heat Outdoor Condenser
Durastar Multi-Zone Outdoor Unit Split-Style Air
Conditioner
Product Information
-
Model Number: DRA2H18M1A, DRA3H28M1A, DRA4H36M1A, DRA5H48M1A,
DRA5H55M1A -
Serial Number: [insert serial number]
-
Purchase Date: [insert purchase date]
-
Installing Contractor Company Name: [insert company name]
-
For any questions or concerns, contact Durastar customer
service via email (questions@durastar.com) or by telephone
(1-888-320-0706)
Product Usage Instructions
Before installing the Durastar Multi-Zone Outdoor Unit
Split-Style Air Conditioner, it is important to read through the
safety precautions and installation instructions provided in the
manual.
Important Safety Precautions
Improper handling can cause serious damage or injury. Please
read and follow the safety information provided in the manual.
Operation, Cleaning, and Maintenance Safety Precautions:
-
Do not use the air conditioner near flammable gases or
combustibles -
Do not touch the power plug with wet hands
-
Do not insert fingers or objects into the air inlet or
outlet -
Turn off the power supply before cleaning or servicing the air
conditioner -
Do not use water hotter than 40°C to clean the air
conditioner -
Do not touch the outdoor unit during operation as it may be
hot
Electrical Safety:
- Do not modify or extend the power cord
- Do not use an extension cord or multi-outlet adapter
- Ensure the power supply voltage and frequency match the
specifications on the air conditioner
Installation Safety:
-
Only a qualified installer or service technician should
install, repair, or service the air conditioner -
Do not install the air conditioner in a potentially hazardous
location -
Ensure the installation location can support the weight of the
outdoor unit
Operating Temperatures
The Durastar Multi-Zone Outdoor Unit Split-Style Air Conditioner
is designed to operate in specific indoor and outdoor temperatures.
When used outside of these temperature ranges, safety features may
activate and turn off the unit to protect it from damage.
| Indoor Air Temperature| Outdoor Air Temperature
---|---|---
Note| 16°C – 32°C| -15°C – 50°C
Accessories Included
The Durastar Multi-Zone Outdoor Unit Split-Style Air Conditioner
comes with the following installation accessories:
- Installation Manual
- Refrigerant Pipe Adapters (quantity 2-3)
- Drain Joint
- Refrigerant Pipe Adapter (3/8-1/2)
- Drain Joint Seal
- Refrigerant Pipe Adapter (1/2-3/8)
- Rubber Foot (quantity 4)
- Refrigerant Pipe Adapter (1/2-5/8)
- Refrigerant Pipe Adapter (1/4-3/8)
Tools Needed for Installation
The following tools may be required for installation:
- Drill and drill bit set
- Flaring tool
- Torque wrench
- Pipe cutter
- Level
INSTALLATION MANUAL
MULTI-ZONE OUTDOOR UNIT
SPLIT-STYLE AIR CONDITIONER
DRA2H18M1A, DRA3H28M1A, DRA4H36M1A, DRA5H48M1A, DRA5H55M1A
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
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 & 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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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 questions@durastar.com or by telephone at
1-888-320-0706.
WARNINGS
Symbols Used in This Manual
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.
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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
overcurrent 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. · Be careful when opening or closing valves below freezing
temperatures. Refrigerant may spurt out from the gap between the valve stem
and the valve body, resulting in injuries.
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 and unplug the unit during storms. · 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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OPERATING TEMPERATURES
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
Indoor Air Temperature
Outdoor Air Temperature
COOL mode 62°F – 90°F (17°C – 32°C) 5°F – 122°F (-15°C – 50°C)
HEAT mode 32°F – 86°F (0°C – 30°C) -22°F – 75°F (-30°C – 24°C)
DRY mode 50°F – 90°F (10°C – 32°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.
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
-22°F (-30°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.
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.
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ACCESSORIES
INCLUDED INSTALLATION ACCESSORIES
The air conditioning system comes with the following accessories. They may
vary by model.
Accessory
Quantity
Image
Accessory
Quantity
Image
Installation
1
Manual
Refrigerant
2-3
Pipe Adapter
(3/8″-1/2″)
Drain Joint
1
Refrigerant
0-2
Pipe Adapter
(1/2″-3/8″)
Drain Joint Seal
1
Refrigerant
0-2
Pipe Adapter
(1/2″-5/8″)
Rubber Foot
4
Refrigerant
0-2
Pipe Adapter
(1/4″-3/8″)
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
TOOLS NEEDED
The following tools may be required for installation.
· Phillips screwdriver · Drill with 2 1/2″ or 3 1/2″ core bit
(indoor unit model depending) · Vacuum pump · HVAC manifold gauge set ·
Refrigerant leak detector · Copper pipe cutter · Flaring tool
· Burr reamer · Crescent or spanner wrench · Hexagonal wrench set · Torque wrench · Hammer · Wire strippers · Wire crimper
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PARTS IDENTIFICATION
NOTE
The installation must be performed in accordance with the required local and
national standards. The installation may be slightly different in different
areas.
DRA5H48M1A, DRA5H55M1A DRA4H36M1A
DRA3H28M1A
DRA2H18M1A
Air Inlets
Signal Cable, Refrigerant Pipes, and Drain Pipe
Power Supply
Air Outlet
Wiring Terminal Refrigerant Valves
NOTE
Illustrations in this manual are for explanatory purposes. The actual shape of
your minisplit equipment may vary slightly. Indoor units may also vary in
configuration.
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OUTDOOR UNIT INSTALLATION
Installation Instructions
Install the unit following local codes and regulations. These may differ
slightly between regions.
24″ (610) above
12″ on
(305) left
12″ (b3a0c5k) wall from
79″in(2f0ro0n7t)
o2n4″rig(6h1t0)
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.
· 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.
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. · Install the unit at least 10 ft. (3 m)
away from TV or radio antennas. Operation of the unit may
interfere with antenna reception in areas where the signal is weak. An
amplifier may be needed for affected devices.
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Special considerations for extreme weather If the unit is exposed to heavy wind, install unit so that air outlet fan is at a 90° angle to the direction of the wind. If needed, build a barrier in front of the unit to protect it from extremely heavy winds. See figures below.
Strong wind
Strong wind
Wind Baffle
Strong wind
If the unit is frequently exposed to heavy rain or snow Build a shelter above
the unit to protect it from rain or snow. Be careful not to obstruct airflow
around the unit.
STEP 2: INSTALL THE DRAIN JOINT 1. Fit the rubber seal on the end of the drain
joint that will connect to the outdoor unit. 2. Insert the drain joint into
the hole in the base pan of the unit. 3. Rotate the drain joint 90° until it
clicks in place facing the front of the unit. 4. Connect a drain hose
extension (not included) to the drain joint to redirect water from the unit
during heating mode.
Base pan hole of outdoor unit Seal
Seal
Drain joint
NOTE
In cold climates, make sure that the drain hose is as vertical as possible to
ensure swift water drainage. If water drains too slowly, it can freeze in the
hose and flood the unit.
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STEP 3: MOUNT THE OUTDOOR UNIT
Anchoring the Unit The outdoor unit can be anchored to the ground or to a
wall-mounted bracket (sold separately) with bolts (M10). Mount the unit on a
cement slab, condenser mounting pad, or other level surface able to support
the unit’s weight. Do not place the unit directly on the ground. If using a
wallmounting bracket, make sure the attached structure can support at least
four times the unit’s weight.
Unit Mounting Dimensions The distance between their mounting feet varies by
outdoor unit. Prepare the installation base of the unit according to the
dimensions below. In most cases, it may be easier to place the outdoor unit in
its correct location and mark the exact placement for the anchor holes.
A
Air inlet
Air inlet
B
Air outlet
Outdoor Unit – Dimensions W x H x D inches (mm)
Mounting Dimensions Dist. A inches (mm) Dist. B inches (mm)
DRA2H18M1A 37-3/16 x 31-15/16 x 16-1/2 (946x810x410)
26-1/2″ (673)
15-7/8″ (403)
DRA3H28M1A 37-3/16 x 31-15/16 x 16-1/2 (946x810x410
26-1/2″ (673)
15-7/8″ (403)
DRA4H36M1A 37-1/2 x 52-1/2 x16-5/16 (952x1333x415)
24-15/16″ (634)
15-15/16″ (404)
DRA5H48M1A 37-1/2 x 52-1/2 x16-5/16 (952x1333x415) DRA5H55M1A 37-1/2 x 52-1/2 x16-5/16 (952x1333x415)
24-15/16″ (634) 24-15/16″ (634)
15-15/16″ (404) 15-15/16″ (404)
Installing multiple outdoor units If installing multiple outdoor units, refer to the diagram below for proper clearances.
L
A
L H L > H
L 1/2H
9 13/16″ (250mm)
1/2H < L H 11 13/16″ (300mm) Can not be installed
(2590m13m/1)6″ (2590m13m/1)6″
H
L A
118″ (3000mm)
(155090″mm) 2(63050/m8″m)
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Pipe length and unit height difference maximums When installing multiple indoor units with a single outdoor unit, ensure that the length of the refrigerant pipe and the drop height between the outdoor and indoor units, and between indoor units, meets the requirements below.
Max. length for all rooms
DRA2H18M1A DRA3H28M1A
131′ (40m) 197′ (60m)
DRA4H36M1A, DRA5H48M1A DRA5H55M1A
262′ (80m)
Max. length for one indoor unit 82′ (25m)
98′ (30m)
115′ (35m)
Max. height difference between outdoor and indoor unit Max. height difference
between indoor units
Outdoor unit
49′ (15m) 33′ (10m)
49′ (15m) 33′ (10m)
49′ (15m) 33′ (10m)
Indoor unit Max. Height difference
Indoor unit 49′ (15m)
33′ (10m)
49′ (15m)
Indoor unit
STEP 4: CONNECT THE SIGNAL & POWER CABLES 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.
WARNING
Before performing any electrical or wiring work, turn off the main power to
the system.
USE THE RIGHT CABLE · Indoor Power/ Signal Cable: 14/4 stranded, unshielded ·
Outdoor Power Cable: Determined by amperage of system and the local codes in
your area.
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Choose the Correct Size of Cable The size of the power supply cable, signal
cable, fuse, and switch needed is determined by the maximum current of the
unit. The maximum current is indicated on the nameplate located on the side
panel of the unit. Refer to this nameplate to choose the right cable (stranded
wire preferred), fuse, or switch.
Prepare the cable and wires for connection: · Using wire strippers, strip the
rubber jacket from both ends of cable to reveal about 1.5″ (38-
40mm) 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.
WARNING
Pay attention to the live wire. While crimping wires, make sure you clearly
distinguish the Live (“L”) Wire from other wires.
WARNING
All wiring work must be performed strictly in accordance with the wiring
diagram located inside the terminal cover of the outdoor unit.
1. Remove the electrical wiring cover. 2. Remove the caps on the conduit
panel. 3. Temporarily mount the conduit tubes (sold separately) onto the
conduit panel. 4. Properly connect both the power supply and low voltage lines
to the corresponding terminals
on the terminal block. 5. Ground the unit in accordance with local codes. 6.
Be sure to cut the wire several inches longer than the required length for
future maintenance. 7. Permanently secure the conduit tubes to the conduit
panel. 8. Replace the wire cover on the side of the unit, and screw it in
place.
Terminal block Over 1.57in.(40mm)
Connecting cable
G
Power supply cord
Conduit panel
Wire Cover
Select the appropriate holes to feed the wires through according to their
diameter.
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REFRIGERANT PIPING CONNECTIONS
WARNING
When connecting refrigerant piping, do not let substances or moisture other
than specified refrigerant enter the unit or pipes. The presence of foreign
materials will lower the unit’s capacity and can cause abnormally high
pressure in the refrigeration system. This can result in explosion and
personal injury.
REFRIGERANT PIPE LENGTH The length of refrigerant piping will affect the performance and efficiency of the unit. Nominal efficiency is tested with a pipe length of 25 feet (7.6 meters). A minimum pipe run of 10 feet (3 meters) is required to minimize vibration and excessive noise.
Refer to the table on page 13 for specifications on the maximum length and drop height of refrigerant piping.
Note on refrigerant valve selection for indoor units
For DRA3H28M1A and DRA4H36M1A: If installing a 24,000 BTU indoor unit, only
connect the unit with the valve ports labeled “A” on the outdoor unit.
For DRA5H48M1A and DRA5H55M1A: If installing one 24,000 BTU indoor unit, only
connect the unit with the valve ports labeled “A” on the outdoor unit. If
installing two 24,000 BTU indoor units, only connect the units with the valve
ports labeled “A” and “B” on the outdoor unit.
Master Valves
Refrigerant connecting pipe sizes
for indoor units
Indoor Unit capacity (Btu/h)
Liquid
6K/9K/12K
1/4″
12K &18K
1/4″
24K
3/8″
Gas
3/8″ 1/2″ 5/8″
“A” and “B” valve ports.
Note on master valves
For DRA3H28M1A, DRA4H36M1A, DRA5H48M1A, and DRA5H55M1A:
Initial startup Once installation is complete, open all zone valves connected
to an indoor unit. Connect the high side hose of the manifold gauge to the gas
side master valve to gain access to all connected zones. Perform leak check
procedures. Afterwards, remove the high side hose and attach the low side hose
from the manifold to evacuate all connected zones.
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Once a vacuum is maintained, open both master valves to release the
refrigerant charge into the entire system. After all the refrigerant is
released, both master valves and all zone valves connected to an IDU must
remain open for proper operation.
WARNING
After startup, the master valves and all zone valves connected to an IDU must
remain open for proper operation.
Post start-up and servicing Once the system is operational, the master valves
can be used to access the entire system for servicing and troubleshooting. If
a repair requires the entire refrigerant charge to be removed, the master
valves will allow the recovery of all system refrigerant. Simply connect the
low side hose of the manifold gauge directly to the gas side master valve to
recover refrigerant. Once repair is complete, use the high side hose of the
manifold to leak check. Then, connect the low side hose again to pull a vacuum
and charge the system. After service is complete, both master valves and all
zone valves connected to an IDU must remain open for proper operation.
WARNING
After servicing, the master valves and all zone valves connected to an IDU
must remain open for proper operation.
OIL TRAPS Oil traps are necessary for the continued performance of the system if the indoor and outdoor units are installed at significantly different heights.
Refer to the diagram below for proper installation of any required oil traps.
Gas Pipe Oil Trap
Indoor Unit
Gas Pipe Oil Trap
Outdoor Unit
Outdoor Unit
Liquid Pipe
32′ 10″ (10m)
32′ 10″ (10m)
Indoor Unit
Liquid Pipe
19′ 9″ (6m)
19′ 9″ (6m)
Required distance between oil traps when the indoor unit is installed higher
than the
outdoor unit.
Required distance between oil traps when the outdoor unit is installed higher
than the
indoor unit.
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If the indoor unit is installed higher than the outdoor unit: Oil may flow
back into the outdoor unit’s compressor and cause liquid compression. This
will lead to deterioration of performance and shorten the life of the
compressor. Oil traps in the rising gas piping can prevent this and should be
installed every 32’10” (10m) of vertical rise.
If the outdoor unit is installed higher than the indoor unit: Proper oil
return to the compressor must be maintained with the suction gas velocity. If
velocities drop below 1500fpm, oil return will be decreased and lead to
deterioration of performance and shorten the life of the compressor. Oil traps
in the rising gas piping can prevent this and should be installed every 19’9″
(6m) of vertical rise.
REFRIGERANT PIPE CONNECTION INSTRUCTIONS
STEP 1: CUT PIPES When preparing refrigerant pipes, take extra care to cut and
flare them properly. This will ensure efficient operation and minimize leaks
and the need for future maintenance. 1. Measure the distance between the
indoor and outdoor units. 2. Using a pipe cutter, cut the pipe length a little
longer than the measured distance. 3. Make sure that the pipe is cut at a
perfect 90o angle. 4. Do not damage, deform, or dent the pipe while cutting.
90°
Oblique Rough Warped
STEP 2: REMOVE BURRS Burrs can affect the airtight seal of the refrigerant
piping connection and must be completely removed. 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 downward
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STEP 3: FLARE PIPE ENDS Proper flaring is essential to achieve an airtight
seal. 1. After removing burrs from cut pipe, seal the ends with PVC tape to
prevent foreign materials
from entering the pipe. 2. Sheath pipe with insulating material. 3. Place
flare nuts on both ends of the pipe. Make sure they are facing in the right
direction as
you cannot change their orientation after flaring.
Flare nut
Copper pipe
4. Remove PVC tape from ends of pipe when ready to perform flaring. 5. Clamp
flare form on the end of pipe. The end of the pipe must extend beyond the edge
of the
flare form in accordance with the pipe extension table.
PIPE EXTENSION BEYOND FLARE FORM
Outer Diameter of Pipe Inches (mm)
Ø 0.25″ (6.35mm) Ø 0.375″ (9.52mm)
Ø 0.5″ (12.7mm) Ø 0.63″ (16mm) Ø 0.75″ (19mm) Ø 0.875″ (22mm)
“A” Minimum Extension Inches (mm)
0.0275″ (0.7mm) 0.04″ (1.0mm) 0.04″ (1.0mm) 0.078″ (2.0mm) 0.078″ (2.0mm)
“A” Maximum Extension Inches (mm) 0.05″ (1.3mm)
0.063″ (1.6mm) 0.07″ (1.8mm) 0.086″ (2.2mm) 0.094″ (2.4mm)
Flare form
A Pipe
TIP: THICKNESS COMPARISON
· 0.0275″ = A Thumbnail · 0.04″ = A Dime · 0.078″ = A Nickle
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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 pipe for cracks and even flaring.
STEP 4: CONNECT PIPES When connecting refrigerant pipes, be careful not to use
excessive torque or to deform the piping in any way. You should first connect
the low-pressure pipe, then the high-pressure pipe.
When bending connective refrigerant piping, the minimum bending radius is 4
inches (10cm). Do not leave coils in the refrigerant line sets. Remove excess
line length to ensure proper system operation.
Radius ~4″ (10cm)
Radius 4″ (10cm)
WARNING
Do not leave coils in the refrigerant line sets. All excess line length must
be removed to ensure proper system operation.
CONNECTING PIPING TO INDOOR UNIT 1. Align the center of the two pipes that you
will connect.
Indoor unit tubing
Flare nut Pipe
2. Tighten the flare nut as tightly as possible by hand. 3. Using a spanner,
grip the nut on the unit tubing. 4. While firmly gripping the nut on the unit
tubing, use a torque wrench to tighten the flare nut
according to the torque values in the table on the next page. Loosen the
flaring nut slightly, then tighten again.
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Outer Diameter of Pipe Inches (mm) Ø 0.25″ (6.35mm) Ø 0.375″ (9.52mm)
Ø 0.5″ (12.7mm) Ø 0.63″ (16mm) Ø 0.75″ (19mm)
Tightening Torque Nm (lb-ft)
18~20 (13.3~14.8) 32~39 (23.6~28.8) 49~59 (36.1~43.5)
57~71 (42~52.4) 67~101 (49.4~74.5)
Flare Dimension “B” Inches (mm)
0.33~0.34 (8.4~8.7) 0.52~0.53 (13.2~13.5) 0.64~0.65 (16.2~16.5) 0.76~0.78
(19.2~19.7) 0.91~0.93 (23.2~23.7)
Flare Shape
90 °± 4 45 °±2
B
R 0.4~0.8
WARNING
Do not use excessive torque. Excessive force can break the nut or damage the
refrigerant piping. You must not exceed the torque requirements shown in the
table above.
CONNECTING PIPING TO OUTDOOR UNIT
1. Remove the valve cover on the side of the outdoor unit. 2. Remove the
protective caps from the ends of the valves. 3. Align flared pipe end with
each valve and tighten the flare nut as tightly as possible by hand. 4. Using
a spanner, grip the body of the valve. Do not grip the nut that seals the
service valve. 5. While firmly gripping the body of the valve, use a torque
wrench to tighten the flare nut
according to the correct torque values in the table above. 6. Loosen the flare
nut slightly, then tighten again. 7. Repeat steps 3-6 for the remaining pipe.
Valve cover
SYSTEM EVACUATION
PREPARATIONS AND PRECAUTIONS
Air and foreign matter in the refrigerant system can cause abnormal rises in
pressure, which can damage the air conditioner, reduce energy efficiency, and
cause injury. Use a vacuum pump and manifold gauge to evacuate the refrigerant
system, removing any non-condensible gas and moisture from the system.
Evacuation should be performed upon initial installation and if unit is
relocated.
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BEFORE PERFORMING EVACUATION
1. Check to make sure the refrigerant pipes connecting the indoor and outdoor
units are connected properly and leak free.
2. Check to make sure all wiring is connected properly.
EVACUATION INSTRUCTIONS
1. Connect the high pressure side hose of the manifold gauge to the service
port on the outdoor unit’s service valve.
2. Connect the hose from the auxiliary port of the manifold gauge to the
nitrogen tank. 3. Open the high pressure side of the manifold gauge. Keep the
low pressure side closed. 4. Open the nitrogen tank valve and pressurize the
system to 600PSIG. 5. Close nitrogen tank valve and high pressure side of the
manifold gauge. 6. Wait 15 minutes, then check that there has been no change
in pressure. 7. If pressure loss is greater than 5PSIG, a leak may be present.
Using the Soap and Bubble
Method, locate and fix all leaks. Start back at step 1 once all leaks have
been fixed. 8. If there is no change in pressure, remove the auxiliary port of
the manifold gauge from the
nitrogen tank. 9. Release the pressure in the system by opening up the high
side of the manifold gauge. 10. Once pressure has been released, remove the
high pressure side hose of the manifold gauge
from the service port and replace it with the low pressure side hose. 11.
Connect the hose of the auxiliary port of the manifold gauge to the vacuum
pump and a
MICRON GAUGE. 12. Turn on the vacuum pump to evacuate the system. 13. Run the
vacuum until the micron gauge reads 250 microns. 14. Once the micron gauge
reads 250 microns, close the low pressure side of the manifold gauge
and turn off the vacuum pump. System must hold below 500 microns for 15
minutes with the vacuum pump off. 15. If there is a change in pressure, a leak
may be present. Using the Soap and Bubble Method, locate and fix all leaks.
Start back at step 1 once all leaks have been fixed. 16. If there is no change
in pressure, remove the manifold gauge auxiliary hose from the vacuum pump.
17. Remove the caps from the unit’s valve bodies, and open the system’s valves
gently with a hex wrench by turning it counterclockwise until they reach their
stopping point. Do not try to force the valves to open further.
Manifold Gauge
Low pressure gauge
Low pressure valve
Low pressure hose
High pressure valve Auxiliary hose
Vacuum pump
Flare nut
Cap Valve body
Valve stem
Low pressure valve
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NOTE ON ADDING ADDITIONAL REFRIGERANT
Each outdoor unit is factory charged with enough refrigerant to support up to
25′ (7.5m) per zone. This is based on a one way liquid line measurement from
the outdoor unit to the indoor unit. For example, (N x 25′ = T) where “T” is
the total length of line set that can be supported by the units factory charge
and “N” is the number of zones available for use (eg. The DRA3 outdoor system
has zone A, B, and C available or 3 zones [3 x 25′ = 75′] So the total length
of line set that the DRA3 can support in one direction is 75′ distributed
between the 3 (or less) zones available.) Systems with line sets that exceed
this length will require additional refrigerant (see the following chart). The
refrigerant should be charged from the service port on the outdoor unit’s low
pressure valve. Additional refrigerant information can be found in the
SUBMITTALS DOCUMENTS at WWW.SERVICE.DURASTAR.COM. Additional refrigerant can
be calculated using the following formula:
Liquid Side Ø 1/4″ (6.35mm)
(Actual pipe length – Standard pipe length) x 0.16oz/ft or
(Actual pipe length – Standard pipe length) x 15g/m
Liquid Side Ø 3/8″ (9.52mm)
(Actual pipe length – Standard pipe length) x 0.32oz/ft or
(Actual pipe length – Standard pipe length) x 30g/m
WARNING
DO NOT mix refrigerant types.
FINAL CHECKS
BEFORE THE TEST RUN Only perform the test run after you have completed the
following steps: · Electrical Safety Checks – Confirm that the unit’s
electrical system is connected and operating
correctly. · Gas Leak Check – Check all flare nut connections and confirm the
system is not leaking. · Confirm that the low and high pressure valves are
fully open. · Check grounding work by measuring the grounding resistance by
visual detection and with a
multimeter. The grounding resistance must be less than 0.1 .
ELECTRICAL SAFETY CHECKS After installation, confirm that all electrical wiring is installed in accordance with local and national regulations, and according to this installation manual.
DURING TEST RUN Using your multimeter, verify the voltage of the main power entering the system. If the main power voltage is greater than ±10% of the name plate voltage, turn off the unit and immediately call a licensed electrician to find and resolve the cause.
WARNING
RISK OF ELECTRICAL SHOCK – All wiring must comply with local and national
electrical codes, and must be installed by a licensed electrician.
GAS LEAK CHECK There are two methods to check for gas leaks: 1. Soap and Water
Method – Using a soft brush, apply a soapy water or liquid detergent to all
pipe connection points on the indoor and outdoor unit. The presence of bubbles
indicates a leak.
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2. Leak Detector Method – If using a leak detector, refer to the device’s operation manual for proper usage instructions.
GAS LEAK CHECK POINTS
Check-point of indoor unit
Check-point of outdoor unit
D
B
C
A
A: Low pressure stop valve B: High pressure stop valve C & D: Indoor unit flare nuts
TIP
Use the Durastar Job Site Information Sheet at the end of this manual as a
commissioning report to record your start up readings.
TEST RUN
TEST RUN INSTRUCTIONS You should perform the test run for at least 30 minutes.
- Connect power to the unit. 2. Press the ON/OFF button on the remote
controller or wired thermostat to turn the unit on. 3. Press the MODE button
to scroll through the following functions, one at a time:
· COOL – Select lowest possible temperature. · HEAT – Select highest possible temperature. 4. Let each function run for 5 minutes and perform the following checks:
LIST OF CHECKS TO PERFORM
[ X ]
Unit is Properly Grounded
[ ]
All Electrical Terminals are Properly Covered
[ ]
Indoor and Outdoor Units are Solidly Installed
[ ]
All Pipe Connection Points Do Not Leak
[ ]
Water Drains Properly from Drain Hose
[ ]
All Piping is Properly Insulated
[ ]
Unit Performs COOL Function Properly
[ ]
Unit Performs HEAT Function Properly
[ ]
Indoor Unit Louvers Move Properly
[ ]
Indoor Unit Responds to Remote Controller or Thermostat
[ ]
5. Double check all pipe connections. During operation, the pressure of the refrigerant system will increase. This may reveal leaks that were not present during the initial leak check. Take time during the test run to recheck all pipe connection points. Refer to Gas Leak Check section for instructions.
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TROUBLESHOOTING
SAFETY PRECAUTIONS
If ANY of the following conditions occurs, turn off your unit immediately! ·
The power cord is damaged or abnormally warm · You smell a burning odor · The
unit emits loud or abnormal sounds · A power fuse blows or the circuit breaker
frequently trips · Water or other objects fall into or out of the unit DO NOT
ATTEMPT TO FIX THESE YOURSELF! CONTACT AN AUTHORIZED SERVICE PROVIDER
IMMEDIATELY!
COMMON ISSUES
The following problems are not a malfunction and in most situations will not
require repairs.
ISSUE
POSSIBLE CAUSES
Unit does not turn on The Unit has a 3-minute protection feature that prevents the unit from
when pressing ON/OFF overloading. The unit cannot be restarted within three minutes of being
button
turned off.
The unit changes from The unit may change its setting to prevent frost from forming on the
COOL/HEAT mode to unit. Once the temperature increases, the unit will start operating in
FAN mode
the previously selected mode again.
The set temperature has been reached, at which point the unit turns off the compressor. The unit will continue operating when the temperature fluctuates again.
The indoor unit emits In humid regions, a large temperature difference between the room’s
white mist
air and the conditioned air can cause white mist.
Both the indoor and outdoor units emit white mist
When the unit restarts in HEAT mode after defrosting, white mist may be emitted due to moisture generated during the defrosting process.
The indoor unit makes A rushing air sound may occur when the louver resets its position.
noises
A squeaking sound may occur after running the unit in HEAT mode due
to expansion and contraction of the unit’s plastic parts.
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ISSUE
POSSIBLE CAUSES
Both the indoor unit and Low hissing sound during operation: This is normal and is caused by outdoor unit make noises refrigerant gas flowing through both indoor and outdoor units.
Low hissing sound when the system starts, has just stopped running, or is defrosting: This noise is normal and is caused by the refrigerant gas stopping or changing direction.
Squeaking sound: Normal expansion and contraction of plastic and metal parts caused by temperature changes during operation can cause squeaking noises.
The outdoor unit makes The unit will make different sounds based on its current operating
noises
mode.
Dust is emitted from either the indoor or outdoor unit
The unit may accumulate dust during extended periods of nonuse, which will be emitted when the unit is turned on. This can be mitigated by covering the unit during long periods of inactivity.
The unit emits a bad odor
The unit may absorb odors from the environment (such as furniture, cooking, cigarettes, etc.) which will be emitted during operations.
The unit’s filters have become moldy and should be cleaned.
The fan of the outdoor unit does not operate
Operation is erratic, unpredictable, or unit is unresponsive
During operation, the fan speed is controlled to optimize product operation.
Interference from cell phone towers and remote boosters may cause the unit to
malfunction. In this case, try the following: · Disconnect the power, then
reconnect. · Press ON/OFF button on remote control to restart operation.
NOTE
If problem persists, contact a local dealer or your nearest customer service
center. Provide them with a detailed description of the unit malfunction as
well as your model number.
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TROUBLESHOOTING
When troubles occur, please check the following points before contacting a
repair company.
PROBLEM Poor Cooling Performance
Poor Heating Performance
The unit starts and stops frequently
POSSIBLE CAUSES
SOLUTION
Temperature setting may be higher Lower the temperature setting than ambient room temperature
The heat exchanger on the indoor Clean the affected heat exchanger or outdoor unit is dirty
The air filter is dirty
Remove the filter and clean it according to instructions
The air inlet or outlet of either unit is Turn the unit off, remove the obstruction
blocked
and turn it back on
Doors and windows are open
Make sure that all doors and windows are closed while operating the unit
Excessive heat is generated by sunlight
Close windows and curtains during periods of high heat or bright sunshine
Low refrigerant due to leak or long- Check for leaks, re-seal if necessary and
term use
top off refrigerant
Excessive heat is generated by sunlight
Block sunlight in installation area
Too many sources of heat in the room (people, computers, electronics, etc.)
Reduce amount of heat sources
The outdoor temperature is extremely low
This model is designed to work down to -13°F, however, heating performance is impacted at temperatures below freezing
Cold air is entering through doors Make sure that all doors and windows are
and windows
closed during use
Low refrigerant due to leak or long-term use
Check for leaks, re-seal if necessary, and top off refrigerant
There’s too much or too little refrigerant in the system
Check for leaks and recharge the system with refrigerant
Incompressible gas or moisture has Evacuate and recharge the system with
entered the system
refrigerant
The compressor is broken
Replace the compressor
The voltage is too high or too low Install a manostat to regulate the voltage
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PROBLEM POSSIBLE CAUSES
SOLUTION
The unit is not Power failure
working
The power is turned off
Wait for the power to be restored Turn on the power
The fuse is burned out
Replace the fuse
Remote control batteries are dead Replace batteries
The Unit’s 3-minute protection has Wait three minutes after restarting the
been activated
unit
Timer is activated
Turn timer off
Indicator lamps continue flashing or error code appears
The unit may stop operation or continue to run safely. If the indicator lamps continue to flash or error codes appear, wait for about 10 minutes. The problem may resolve itself. If not, disconnect the power, then connect it again. Turn the unit on. If the problem persists, disconnect the power and contact your nearest customer service center.
NOTE
If your problem persists after performing the checks and diagnostics above,
turn off your unit immediately and contact an authorized service center.
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WIRING DIAGRAMS
DRA2H18M1A
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DRA3H28M1A
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DRA4H36M1A
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DRA5H48M1A/DRA5H55M1A
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ERROR AND OPERATING CODES
Display Malfunction & protection indication
EL01
Communication malfunction between indoor and outdoor units
FL14
Capability dismatch between indoor unit and outdoor unit
EC50
Outdoor temp. sensor error
EC51
Outdoor EEPROM error
EC52
Condenser coil temperature sensor (T3) malfunction
EC53
Outdoor ambient temperature sensor (T4 ) malfunction
EC54
Compressor discharge temperature sensor TP is in open circuit or has short circuited
EC55
Outdoor IPM module temperature sensor malfunction
EC56
Outdoor T2B sensor error
EC57
Refrigerant pipe temperature sensor error
EC07
Outdoor DC fan motor malfunction/fan speed out of control
EC71
Over current failure of outdoor DC fan motor
EC72
Lack phase failure of outdoor DC fan motor
PC00
Inverter module (IPM) protection
PC02
Top temperature protection of compressor
PC06
Discharge temperature protection of compressor
PC08
Outdoor overcurrent protection
PC0A High temperature protection of condenser
PC0F
PFC module protection
PC0L
Low temperature protection of outdoor unit
PC10
Outdoor unit low AC voltage protection
PC11
Outdoor unit main control board DC bus high voltage protection
PC12
Outdoor unit main control board DC bus high voltage protection /341 MCE error
PC30
System high pressure protection
PC31
System low pressure protection
PC40
Communication error between outdoor main chip and compressor driven chip
PC42
Compressor start failure of outdoor unit
PC43
Outdoor compressor lack phase protection
PC44
Outdoor unit zero speed protection
PC45
Outdoor unit IR chip drive failure
PC46
Compressor speed has been out of control
PC49
Compressor overcurrent failure
PCA1 Condensation protection of refrigerant pipe
PH90 High temperature protection of Evaporator
PH91 Low temperature protection of Evaporator
LC06
High temperature protection of Inverter module (IPM)
Note: DF (defrost) and FC (forced cooling) are normal operating codes, not malfunctions. [ ] Applicable to some units only.
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JOB SITE INFORMATION SHEET
Site Information Job Name: ____
Installation Date: Address: __
City: _____ State: __ Zip: ____ Phone:
____ Email:
Contractor Information Contractor Name: ____ Technician Name: __ Address: __ City: State: __ Zip: ____ Phone: ____ Email:
Outdoor Unit Information Model #: _ Serial #: ___ Unit Location:
Outdoor Electrical Readings Line Power Wire Color: L1 __ L2 __ G ____ Line Voltage (Power Off): L1 to L2 L1 to G L2 to G ____ Line Voltage (Power On): L1 to L2 L1 to G _____ L2 to G
Outdoor Thermal Readings Discharge: °F Ambient: °F
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Indoor System Information
A
Unit Information Model #: _____ Serial #:
Type: ____ Location:
Refrigerant Line Size 1/4″ 3/8″ 1/2″ 5/8″ Line Set Length: ___ (Circle Liquid and Gas Line):
Electrical Readings
Power/Control Wire Color: 1 2 3
Voltage Readings: 1-2 ___ AC
2-3 ___DC
Thermal Readings
Return Air: °F Supply Air: °F Room Air: _____°F
Gas Line Saturation: _____°F
Liquid Line Saturation: _____°F
B Unit Information
DRA2 Model #: __ Serial #:
Type: ____ Location:
Refrigerant Line Size 1/4″ 3/8″ 1/2″ 5/8″ Line Set Length: ___ (Circle Liquid and Gas Line):
Electrical Readings
Power/Control Wire Color: 1 2 3
Voltage Readings: 1-2 ___ AC
2-3 ___DC
Thermal Readings
Return Air: °F Supply Air: °F Room Air: _____°F
Gas Line Saturation: _____°F
Liquid Line Saturation: _____°F
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C Unit Information
DRA3 Model #: _____ Serial #:
Type: ____ Location:
Refrigerant Line Size 1/4″ 3/8″ 1/2″ 5/8″ Line Set Length: ___ (Circle Liquid and Gas Line):
Electrical Readings
Power/Control Wire Color: 1 2 3
Voltage Readings: 1-2 ___ AC
2-3 ___DC
Thermal Readings
Return Air: °F Supply Air: °F Room Air: _____°F
Gas Line Saturation: _____°F
Liquid Line Saturation: _____°F
D Unit Information
DRA4 Model #: _____ Serial #:
Type: ____ Location:
Refrigerant Line Size 1/4″ 3/8″ 1/2″ 5/8″ Line Set Length: ___ (Circle Liquid and Gas Line):
Electrical Readings
Power/Control Wire Color: 1 2 3
Voltage Readings: 1-2 ___ AC
2-3 ___DC
Thermal Readings
Return Air: °F Supply Air: °F Room Air: _____°F
Gas Line Saturation: _____°F
Liquid Line Saturation: _____°F
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E Unit Information
DRA5 Model #: _____ Serial #:
Type: ____ Location:
Refrigerant Line Size 1/4″ 3/8″ 1/2″ 5/8″ Line Set Length: ___ (Circle Liquid and Gas Line):
Electrical Readings
Power/Control Wire Color: 1 2 3
Voltage Readings: 1-2 ___ AC
2-3 ___DC
Thermal Readings
Return Air: _____°F
Supply Air: _____°F
Room Air: _____°F
Gas Line Saturation: °F Liquid Line Saturation: °F
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©2022 Durastar
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V1.0 11.10.2022
References
- Durastar - Reliable, evenly distributed temperature control solutions
- Durastar - Reliable, evenly distributed temperature control solutions
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