DURASTAR DRAD18F1A Installation Manual
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DURASTAR DRAD18F1A Installation Manual

Slim ducted indoor unit split-style air conditioner
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INSTALLATION MANUAL
SLIM DUCTED INDOOR UNIT
SPLIT-STYLE AIR CONDITIONER
DRAD09F1A, DRAD12F1A, DRAD18F1A, DRAD24F1A
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.COM

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Summary of Contents for DURASTAR DRAD18F1A

  • Page 1 SLIM DUCTED INDOOR UNIT SPLIT-STYLE AIR CONDITIONER DRAD09F1A, DRAD12F1A, DRAD18F1A, DRAD24F1A Model Number: Serial Number: Purchase Date: Installing Contractor Company Name: Capture relevant information about your Durastar mini-split equipment before it is installed and write it above for future reference. DURASTAR.COM...

  • Page 2: Table Of Contents

    STEP 5: CONNECT DRAIN PIPE ................17 STEP 6: CONNECT SIGNAL CABLE ............... 19 STEP 7: PREPARE REFRIGERANT PIPING ............21 STEP 8: WRAP PIPES AND CABLE ................ 21 TROUBLESHOOTING .....................22 WIRING DIAGRAM ......................26 ERROR CODES - INDOOR UNIT ................27 DURASTAR.COM...

  • Page 3: Introduction

    • 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.

  • Page 4: Important Safety Precautions

    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. DURASTAR.COM...
  • Page 5 • 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. DURASTAR.COM...
  • Page 6 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. DURASTAR.COM...

  • Page 7: Operating Temperatures

    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 -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.

  • Page 8: Accessories

    Indoor and outdoor connection wire • Outdoor power supply cord • Drain pipe • Pipe and cable wrapping tape • Wall hole sleeve and cover • Putty • Suspension bolts and necessary hardware to hang indoor unit • Wiring u-lugs DURASTAR.COM...

  • Page 9: Tools Needed

    Refrigerant leak detector • Copper pipe cutter • Flaring tool • Burr reamer • Crescent or spanner wrench • Hexagonal wrench set • Torque wrench • Multimeter • Electroprobe • Level • Hammer • Wire strippers • Wire crimper DURASTAR.COM...

  • Page 10: Parts Identification

    Refrigerant Pipes and Signal Wire Outdoor Unit Air Inlets Signal Cable, Refrigerant Pipes, and Drain Pipe Wiring Terminal Valve Cover Air Outlet NOTE Illustrations in this manual are for explanatory purposes. The actual shape of your mini-split equipment may vary slightly. DURASTAR.COM...

  • Page 11: Installation Overview - Indoor Unit

    INSTALLATION OVERVIEW - INDOOR UNIT Install the indoor unit Install the drain pipe Install the outdoor unit Connect the refrigerant Evacuate and charge the Connect the wires pipes refrigeration system Perform a test run DURASTAR.COM...

  • Page 12: Indoor Unit Installation

    If there is no pre-existing refrigerant piping, when choosing a location, leave ample room for a wall hole (see Step 3: Drill Wall Hole for Connective Piping) for the signal cable and refrigerant piping that connect the indoor and outdoor units. DURASTAR.COM...

  • Page 13: Step 2: Hang Indoor Unit

    17 3/4" 6" 21 1/8" 7 5/16" 23 9/16" DRAD12F1A (700mm) (200mm) (506mm) (450mm) (152mm) (537mm) (186mm) (599mm) DRAD18F1A 34 5/8" 8 1/4" 26 9/16" 23 5/8" 5 3/8" 27 13/16" 7 1/2" 30 13/16" (880mm) (210mm) (674mm) (600mm) (136mm)

  • Page 14: Step 3: Drill Wall Hole For Connective Piping

    After the sleeve is inserted through the wall, connect the wall hole sleeve cover to the wall sleeve on the outside end. Make sure the cover is flush with the outside wall. DURASTAR.COM...

  • Page 15: Step 4: Duct And Accessories Installation

    Static Pressure (Pa / in. wc) DRAD09F1A 0~50 / 0~0.2 DRAD12F1A 0~50 / 0~0.2 DRAD18F1A 0~100 / 0~0.4 DRAD24F1A 0~160 / 0~0.64 CHANGING THE AIR INLET DIRECTION (REAR TO UNDERSIDE) 1. Remove the ventilation panel and air return flange. Air return flange Ventilation panel DURASTAR.COM...

  • Page 16: Fresh Air Duct Installation

    Ventilation panel Air return flange FRESH AIR DUCT INSTALLATION This unit allows for a fresh air duct to be installed. Duct location and dimensions are shown below. Fresh air duct joint DRAD18F1A & DRAD24F1A DRAD09F1A & DRAD12F1A Ø4.92”(125mm) Ø6.3”(160mm) Ø3.62”(92mm) Ø4.45”(113mm)

  • Page 17: Step 5: Connect Drain Pipe

    Drain pipe Drain Pipe Model Inner Diameter DRAD09F1A 1” (25mm) DRAD12F1A 1” (25mm) Drain pipe Pipe clamp Insulation connecting port DRAD18F1A 1” (25mm) DRAD24F1A 1” (25mm) Ceiling 39-59” (990mm- 1500mm) 1/100 DURASTAR.COM...
  • Page 18 6. Pass the drain pipe through the wall hole to the outside. The end of the pipe should be at least 2" (50mm) above the ground. If it touches the ground, the pipe may become blocked. Make sure the water drains to a safe location where it will not cause water damage or a slipping hazard. DURASTAR.COM...

  • Page 19: Step 6: Connect Signal Cable

    Indoor Power Cable (if applicable): H05VV-F or H05V2V2-F • Outdoor Power Cable: H07RN-F • Signal Cable: H07RN-F CABLE SIZING Use a minimum of 16 AWG for power and signal cables connected to and between the indoor and outdoor units. DURASTAR.COM...
  • Page 20 Screw the cable clamp down tightly. 7. Replace the control box lid. WARNING All wiring must be performed strictly in accordance with the wiring diagram located on the inside of the control box lid. DURASTAR.COM...

  • Page 21: Step 7: Prepare Refrigerant Piping

    When wrapping the bundle, keep the ends of the piping unwrapped. You need to access them to test for leaks at the end of the installation process (refer to Electrical and Gas Leak Checks section of the outdoor unit's installation manual). DURASTAR.COM...

  • Page 22: Troubleshooting

    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. DURASTAR.COM...
  • Page 23 • 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. DURASTAR.COM...
  • Page 24 Incompressible gas or moisture has Evacuate and recharge the system with quently 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 DURASTAR.COM...
  • Page 25 If not, disconnect the power, then connect it again. Turn the unit on. appears 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. DURASTAR.COM...

  • Page 26: Wiring Diagram

    WIRING DIAGRAM DRAD09F1A, DRAD12F1A, DRAD18F1A and DRAD24F1A NOTE: 1.The parts with dotted lines indicate FAN FOR THE FRESH AIR optional features. Alarm OR ANION Remote 2.Remove the short connector of J7 FAN1 Output GENERATOR Control when you use the "on-off" function.

  • Page 27: Error Codes - Indoor Unit

    ERROR CODES - INDOOR UNIT Malfunction or Protection ashing light on light o DURASTAR.COM...
  • Page 28 ©2021 Durastar DURASTAR.COM V2.1 0921...
  • Page 29 MULTI-ZONE OUTDOOR UNIT SPLIT-STYLE AIR CONDITIONER DRA2U18M1B, DRA3U28M1B, DRA4U36M1B, DRA5U48M1B, DRA5U55M1B Model Number: Serial Number: Purchase Date: Installing Contractor Company Name: Capture relevant information about your Durastar mini-split equipment before it is installed and write it above for future reference. DURASTAR.COM...
  • Page 30 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 DURASTAR.COM...

  • Page 31: Introduction

    • 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.

  • Page 32: Important Safety Precautions

    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. DURASTAR.COM...
  • Page 33 • 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. DURASTAR.COM...
  • Page 34 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. DURASTAR.COM...

  • Page 35: Operating Temperatures

    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 -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.

  • Page 36: Accessories

    • Wire strippers • HVAC manifold gauge set • Wire crimper • Micron Gauge • Multimeter • Refrigerant leak detector • Electroprobe • Copper pipe cutter • Level • Flaring tool • Burr reamer • Crescent or spanner wrench DURASTAR.COM...

  • Page 37: Parts Identification

    Drain Pipe Air Inlets Power Supply Wiring Terminal Refrigerant Valves Air Outlet 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. DURASTAR.COM...

  • Page 38: Outdoor Unit Installation

    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. DURASTAR.COM...

  • Page 39: Step 2: Install The Drain Joint

    (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 wall- mounting bracket, make sure the attached structure can support at least four times the unit's weight. DURASTAR.COM...
  • Page 40 L = Wall / Obstruction height A = Required distance between unit and wall / obstruction L ≤ 1/2H ≥9 13/16” (250mm) L ≤ H 1/2H < L ≤ H ≥11 13/16” (300mm) L > H Can not be installed DURASTAR.COM...

  • Page 41: Step 4: Connect The Signal And Power Cables

    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. DURASTAR.COM...
  • Page 42 8. Replace the wire cover on the side of the unit, and screw it in place. Terminal block Connecting cable Power supply cord Conduit panel Wire Cover Select the appropriate holes to feed the wires through according to their diameter. DURASTAR.COM...

  • Page 43: Refrigerant Piping Connections

    Perform leak check procedures. Afterwards, remove the high side hose and attach the low side hose from the manifold to evacuate all connected zones. DURASTAR.COM...

  • Page 44: Oil Traps

    Indoor Unit 19’ 9” (6m) 32’ 10” (10m) Required distance between oil traps when Required distance between oil traps when the indoor unit is installed higher than the the outdoor unit is installed higher than the outdoor unit. indoor unit. DURASTAR.COM...

  • Page 45: Step 1: Cut Pipes

    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 DURASTAR.COM...

  • Page 46: Step 3: Flare Pipe Ends

    0.04" (1.0mm) 0.07" (1.8mm) Ø 5/8" (15.9mm) 0.078" (2.0mm) 0.086" (2.2mm) Ø 3/4" (19.1mm) 0.078" (2.0mm) 0.094" (2.4mm) Flare form TIP: THICKNESS COMPARISON • 0.0275" = A Thumbnail • 0.04" = A Dime • 0.078" = A Nickle Pipe DURASTAR.COM...

  • Page 47: Step 4: Connect Pipes

    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. DURASTAR.COM...

  • Page 48: System Evacuation

    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. DURASTAR.COM...

  • Page 49: Before Performing Evacuation

    Do not try to force the valves to open further. Manifold Gauge Low pressure Flare nut gauge Low pressure High pressure valve valve Low pressure hose Auxiliary hose Vacuum pump Valve body Valve stem Low pressure valve DURASTAR.COM...

  • Page 50: Final Checks

    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) Liquid Side Ø...

  • Page 51: Test Run

    A: Low pressure stop valve B: High pressure stop valve C & D: Indoor unit flare nuts 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.

  • Page 52: Troubleshooting

    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. DURASTAR.COM...
  • Page 53 • 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. DURASTAR.COM...
  • Page 54 Incompressible gas or moisture has Evacuate and recharge the system with quently 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 DURASTAR.COM...
  • Page 55 If not, disconnect the power, then connect it again. Turn the unit on. appears 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. DURASTAR.COM...

  • Page 56: Wiring Diagrams

    WIRING DIAGRAMS DRA2U18M1B COMP TOP 5(8) Dotted line indicates this component is optional. Your configuration many vary. 16022000035644 DURASTAR.COM...
  • Page 57 DRA3U28M1B Dotted line indicates this component is optional. Your configuration many vary. 16022300002514 DURASTAR.COM...
  • Page 58 DRA4U36M1B Dotted line indicates this component is optional. Your configuration many vary. 16022300002633 DURASTAR.COM...
  • Page 59 DRA5U48M1B and DRA5U55M1B IPM&PFC BOARD MAIN CONTROL BOARD INDOOR COIL OUTLET TEMP.SENSOR Dotted line indicates this component is optional. Your configuration many vary. 16022000036851 DURASTAR.COM...

  • Page 60: Error And Operating Codes

    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. DURASTAR.COM...

  • Page 61: Job Site Information Sheet

    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 DURASTAR.COM...
  • Page 62 (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 DURASTAR.COM...
  • Page 63 (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 DURASTAR.COM...
  • Page 64 (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 DURASTAR.COM...
  • Page 65 NOTES: DURASTAR.COM...
  • Page 66 THIS PAGE INTENTIONALLY LEFT BLANK. DURASTAR.COM...
  • Page 67 THIS PAGE INTENTIONALLY LEFT BLANK. DURASTAR.COM...
  • Page 68 THIS PAGE INTENTIONALLY LEFT BLANK. ©2022 Durastar DURASTAR.COM V2.0 1122...

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