INSTALLATION MANUAL SINGLE ZONE OUTDOOR UNIT SPLIT-STYLE AIR CONDITIONER DRA1U09S1A, DRA1U12S1A, DRA1U18S1A, DRA1U24S1A 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. 1 DURASTAR.
TABLE OF CONTENTS TABLE OF CONTENTS..................................................................................................... 2 INTRODUCTION.................................................................................................................. 3 WARNINGS............................................................................................................................ 3 IMPORTANT SAFETY PRECAUTIONS....................................................................
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.
IMPORTANT SAFETY PRECAUTIONS Improper handling can cause serious damage or injury. Please read the following safety information in its entirety.
• • • • • • • • • • • Electrical Safety Only use the specified power cord. If the power cord is damaged, it must be replaced by the manufacturer, its service agent, or similarly qualified persons in order to avoid a hazard. Keep the power plug clean. Remove any dust or grime that accumulates on or around the plug. Dirty plugs can cause fire or electric shock. Do not pull the power cord to unplug unit. Hold the plug firmly and pull it from the outlet.
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.
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.
ACCESSORIES INCLUDED INSTALLATION ACCESSORIES The air conditioning system comes with the following accessories. Accessory Quantity Owner's Manual 1 Image Accessory Quantity Rubber Foot 4 Image FIELD SUPPLIED INSTALLATION ACCESSORIES The following installation accessories may be required and must be purchased separately.
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. Signal Cable, Refrigerant Pipes, and Drain Hose Air Inlets Wiring Terminal Valve Cover Air Outlet NOTE Illustrations in this manual are for explanatory purposes. The actual shape of your minisplit equipment may vary slightly. DURASTAR.
OUTDOOR UNIT INSTALLATION Installation Instructions 24” (610) above Install the unit following local codes and regulations. These may differ slightly between regions. 12” ( 30 on le 5) ft 5) ll 30 wa ( ” 12 back m fro 24” ( 6 on ri 10) ght ) 07 0 2 t ”( 79 fron in 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.
Special considerations for extreme weather If the unit is exposed to heavy wind, install unit so that the 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 Wind Baffle Strong wind 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 3: ANCHOR THE OUTDOOR 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.
STEP 4: CONNECT THE SIGNAL AND 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.
Terminal block Ove r 1.5 7in. (40m m) Connecting cable G Power supply cord Conduit panel Wire Cover Select the appropriate holes to feed the wires through according to their diameter. 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.
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. 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.
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. 2. 3. 4. Measure the distance between the indoor and outdoor units. Using a pipe cutter, cut the pipe length a little longer than the measured distance. Make sure that the pipe is cut at a perfect 90o angle. Do not damage, deform, or dent the pipe while cutting.
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.
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) "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) Flare form "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) A Pipe 6. Place flaring tool onto the form. 7. Turn the handle of the flaring tool clockwise until the pipe is fully flared. 8.
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 below. Loosen the flaring nut slightly, then tighten again. 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.
AIR 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. BEFORE PERFORMING EVACUATION 1.
NOTE ON ADDING ADDITIONAL REFRIGERANT Some systems require additional refrigerant charging depending on pipe lengths. The standard pipe length is 25' (7.5m). Pipe lengths greater than the standard length will require additional refrigerant. The refrigerant should be charged from the service port on the outdoor unit's low pressure valve. Additional refrigerant can be calculated using the following formula: Liquid Side Ø .25" (6.35mm) Liquid Side Ø .375" (9.
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 TEST RUN TEST RUN INSTRUCTIONS You should perform the test run for at least 30 minutes. 1. Connect power to the unit. 2. Press the ON/OFF button on the remote controller or 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.
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
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.
TROUBLESHOOTING When troubles occur, please check the following points before contacting a repair company.
PROBLEM POSSIBLE CAUSES SOLUTION The unit is not Power failure Wait for the power to be restored working The power is turned off 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 The unit may stop operation or continue to run safely.
WIRING DIAGRAMS DRA1U09S1A & DRA1U12S1A POWER SUPPLY INDOOR UNIT HEATER Y/G CN17 CN15 CRANKCASE PAN HEATER HEATER CN21 T.M.
DRA1U18S1A & DRA1U24S1A POWER SUPPLY Y/G 2 3 L1 L2 BLACK (BLUE) RED BLACK (YELLOW) BLUE (BLACK) Y/G CN16 CN4 CRANKCASE PAN HEATER HEATER CN17 1 BROWN (RED) HEATER OPTIONAL OPTIONAL OPTIONAL Y/G HEATER INDOOR UNIT Y/G CN6-1 CN8 CN7 CN2 L-IN N-IN S EARTH CN3 MAIN BOARD CN30 CN18 CN5 EEV AC FAN CN414 CN12 CN13 DC FAN U 28 CAPACITOR BLACK NOTE This symbol indicates the element is optional, the actual shape shall be prevail.
ERROR CODES - OUTDOOR UNIT DISPLAY MALFUNCTION & PROTECTION DEFINE E0 EEPROM malfunction E2 Communication malfunction between outdoor and all indoor units E3 Communication malfunction between outdoor main control chip and compressor control chip E4 Outdoor temp. sensor error (condenser pipe sensor/outdoor ambient sensor /compressor discharge pipe sensor/ Indoor unit coil outlet temp. sensor.
THIS PAGE INTENTIONALLY LEFT BLANK. 30 DURASTAR.
THIS PAGE INTENTIONALLY LEFT BLANK. DURASTAR.
DURASTAR.COM ©2021 Durastar V2.
