DURASTAR DRU1U18S2A Installation Manual

Single zone side-discharge heat pump

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INSTALLATION MANUAL

SINGLE ZONE SIDE-DISCHARGE HEAT PUMP

DRU1U18S2A, DRU1H18S2A, DRU1U24S2A, DRU1H24S2A,

DRU1U30S2A, DRU1H30S2A, DRU1U36S2A, DRU1H36S2A,

DRU1H42S2A, DRU1U48S2A, DRU1H48S2A, DRU1H49S2A,

DRU1U60S2A, DRU1H60S2A

R-454B, 208/230V, 1ph 60HZ, 24V / RS485 Communicating

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.

DURASTAR.COM

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Page 1 DRU1U60S2A, DRU1H60S2A R-454B, 208/230V, 1ph 60HZ, 24V / RS485 Communicating 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
• 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 3: Symbols Used In This Manual
NOTE: The pencil indicates any manufacturer notes relating to surrounding content. These may include further clarifications or call-outs. TIP: 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. R-454B WARNING:...
Page 4: Important Safety Precautions
Do not operate your air conditioner in a wet room such as a bathroom or laundry room. Too much exposure to water can cause electrical components to short circuit. • If the air conditioner is used together with burners or other heating devices, thoroughly ventilate the room to avoid oxygen deficiency. DURASTAR.COM...
Page 5: Electrical Safety
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. DURASTAR.COM...
Page 6 When the refrigerant sensor malfunctions, the indoor unit will display the error code “FHCC”. The refrigerant sensor can not be repaired and can only be replaced by the manufacturer. It shall only be replaced with the sensor specified by the manufacturer. DURASTAR.COM...
Page 7 All training shall follow the ANNEX HH requirements of UL 60335-2-40 4th Edition. Examples for such working procedures are: • breaking into the refrigerating circuit; • opening of sealed components; • opening of ventilated enclosures. DURASTAR.COM...
Page 8 The following procedure shall be adhered to: • safely remove refrigerant following local and national regulations; evacuate; • purge the circuit with NITROGEN • evacuate (requirement); • continuously flush or purge with NITROGEN when using flame to open circuit; and • open the circuit DURASTAR.COM...
Page 9: Charging Procedures
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 10 : the actual refrigerant charge in the system in lbs (kg) : the refrigerant releasable charge in lbs (kg) WARNING: The minimum room area or the minimum room area of conditioned space is based on releasable charge and total system refrigerant charge. DURASTAR.COM...
Page 11: Accessories
0 - 1 Drain Joint Type) 5/8" -> 3/4" Flare Braze To Flare Adapter For Adapter DRU1U18S2A FIELD SUPPLIED INSTALLATION ACCESSORIES The following installation accessories may be required and must be purchased separately. • Refrigerant piping (line set) • Indoor and outdoor connection wire •...
Page 12: Parts Identification
3/8 (9.52) 3/4 (19) 243 (110) DRU1U60S2A 60,000 208/230 3/8 (9.52) 3/4 (19) 193 (88) DRU1H60S2A 60,000 208/230 3/8 (9.52) 3/4 (19) 243 (110) *Included adapter must be used with the DRU1U18S2A to match the air handler suction pipe size DURASTAR.COM...
Page 13: Operating Temperatures
Regularly inspect and clean air filters. NOTE Your Durastar heat pump 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.
Page 14: Outdoor Unit Installation
• In a location 10 ft. (3 m) or closer to 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. DURASTAR.COM...
Page 15: Step 2: Install The Drain Joint
Twist to lock Drain hole 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. DURASTAR.COM...
Page 16: Step 3: Mount The Outdoor Unit
Top View Front View OUTDOOR UNIT DIMENSIONS MOUNTING DIMENSIONS MODEL inch inch inch inch inch DRU1U18S2A 31-11/16 21-13/16 20-1/8 12-1/2 DRU1H18S2A 26-1/2 13-7/16 26-1/8 13-15/16 DRU1U24S2A...
Page 17: Refrigerant Piping Connection
Run nitrogen through the refrigerant tubing when brazing to avoid carbon build up. 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. DURASTAR.COM...
Page 18: Refrigerant Piping Specifications
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 SUBMITTAL DOCUMENTS at WWW.SERVICE.DURASTAR.COM. Additional refrigerant can be calculated using the following chart and formula:...
Page 19: 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. CAUTION If oil flows back into the outdoor unit’s compressor, this might cause liquid compression or deterioration of oil return. Oil traps in the rising gas piping can prevent this. DURASTAR.COM...
Page 20 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 DURASTAR.COM...
Page 21: Step 2: Remove Burrs
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 on the next page. DURASTAR.COM...
Page 22: Step 4: Connect Pipes
CONNECTING PIPING TO INDOOR UNIT NOTE It is advised to install a 3/8 bi-flow drier on the liquid line near the indoor unit. 1. Align the center of the two pipes that you will connect. Indoor unit tubing Flare nut Pipe DURASTAR.COM...
Page 23 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 DURASTAR.COM...
Page 24: System Evacuation
Outdoor unit Flare nut Manifold Gauge -76cmHg Low pressure Compound Pressure valve gauge gauge High pressure pressure valve valve valve body Pressure hose valve stem Charge hose Charge hose Vacuum pump DURASTAR.COM...
Page 25: Wiring The Outdoor Unit
4. Feed the wires through the conduit mounting panel and temporarily mount the conduit tubes (sold separately). 5. Properly connect both the power supply to the corresponding terminals on the terminal block. 6. Ground the unit in accordance with local codes. (See images on the next page.) DURASTAR.COM...
Page 26: Connect The Signal Cable
The shield and drain conductor must be grounded only at the outdoor unit and stripped back and taped at the indoor unit. Grounding the wire at both ends results in an increase of noise transmitted onto the signal wires. DURASTAR.COM...
Page 27: Connecting The Signal Cable
Refer to the indoor unit install manual for more information. 208/230V~60Hz Power Supply S2 B W D R C Y1 Y2 L Nonpolar RS-485 Outdoor Unit OUTDOOR communication Power Supply UNIT TO INDOOR UNIT Low voltage 208/230V Connection Method 1: 24V Thermostat Connection Method 2: Included RS485 Thermostat DURASTAR.COM...
Page 28 The "B" terminal energizes the reversing valve on call for heat. Please ensure that thermostat configuration is set up for B functionality. Note: These methods are for use with a Durastar outdoor unit with 24V communication or with a third party air handler, • Wiring for 4H and 2C thermostat cased coil, and gas furnace.
Page 29 COM OY2 OY1 Y/Y2 OB/O • Wiring for 2H and 1C thermostat Y/Y2 COM OY2 OY1 OB/O Y/Y2 COM OY2 OY1 OB/O • Wiring for 2H and 1C thermostat • Wiring for 2H and 1C thermostat DURASTAR.COM COM OY2 OY1 Y/Y2 OB/O...
Page 30: Control Logic
• Wiring for 1H and 1C thermostat COM OY2 OY1 OB/O Y/Y2 Y/Y2 COM OY2 OY1 OB/O COM OY2 OY1 OB/O Y/Y2 CONTROL LOGIC Connector Purpose 24v Power Connection Common Low Cooling High Cooling Heating Reversing Valve Heating Control Defrost Control System Fault Signal DURASTAR.COM...
Page 31: Final Checks
RISK OF ELECTRICAL SHOCK - All wiring must comply with local and national electrical codes, and must be installed by a licensed electrician. Use the Durastar Job Site Information Sheet at the end of this manual as a commissioning report to record your start up readings.
Page 32: Gas Leak Check
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. DURASTAR.COM...
Page 33: Troubleshooting
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. DURASTAR.COM...
Page 34: Led Display
The control displays unit status as well as any active fault codes on the LED display. If the unit is functioning normally, the LED will display current temperature set point. When a fault code is active, the display will flash quickly the active fault code. Please refer to the error code table on the following page. DURASTAR.COM...
Page 35: Error And Operating Codes
ODU compressor lack phase protection PC44 ODU zero speed protection PC45 ODU IR chip drive failure PC46 Compressor speed has been out of control PC49 Compressor over-current failure PH90 High temperature protection of evaporator PH91 Low temperature protection of evaporator DURASTAR.COM...
Page 36: Wiring Diagrams
WIRING DIAGRAMS US1-KFR53W/BP3N10-X330-W(RX62T+SW+AHU).D.13.MP-1 DRU1U18S2A 140mm WIRING DIAGRAM HIGH PRESSURE ELECTRONIC PRESSURE SWITCH 16022000040910 EXPANSION VALVE SENSOR BLACK(YELLOW) SUCTION TEMP.SENSOR CN18 CN19 H_YL H_PRO SUB-1G CN14 CELLULAR 24V BOARD BLUE EARTH N-IN L-IN CN15 L2/N 12 34 CN1A BROWN(RED) CHASSIS CN17...
Page 37 3. Undimensioned dimensional tolerance shall comply with GB/T1804-v; 4. Materials subject to RoHS shall comply with QMK-J000.1002 Technical Standard for Restricted Hazardous DURASTAR.COM Substance in the Products of MIDEA. 5. Materials subject to REACH shall comply with QMK-J000.1008 Technical Standard for REACH of MIDEA.
Page 38 24V COMMUNICATION/ 24V COMMUNICATION ONLY CN5 S2 S1 485 COMMUNICATION R C Y1 Y2 L R C Y1 Y2 L STRONGER CAPACITY OUTPUT 3 NONE (ONLY 24V COMMUNICATION) TO INDOOR UNIT 4 DEFALUT SETTING TO 24V THERMOSTAT ENHANCED DEFROSTING DURASTAR.COM...
Page 39 GB/T1804-v; erials subject to RoHS shall comply with QMK-J000.1002 Technical Standard for Restricted Hazardous Substance in the Products DURASTAR.COM erials subject to REACH shall comply with QMK-J000.1008 Technical Standard for REACH of MIDE.
Page 40 GB/T1804-v; rials subject to RoHS shall comply with QMK-J000.1002 Technical Standard for Restricted Hazardous Substance in the Products o rials subject to REACH shall comply with QMK-J000.1008 Technical Standard for REACH of MIDEA. DURASTAR.COM...
Page 41 S t a n d a r d f o r 方威 h n i c a l S t a n d a r d f o r R E A C H DURASTAR.COM 张成刘传虎...
Page 42: Job Site Information Sheet
Unit Location: ____________________________________________________________________________ _________________________________________________________________________________________ Indoor Unit (IDU) Information IDU Model #: _____________________________ IDU Serial #: ____________________________________ Unit Type: ___________________________ Unit Location: _______________________________________ _________________________________________________________________________________________ Refrigerant Line Size (Circle Liquid and Gas Line): 1/4" 3/8" 1/2" 5/8" Line Set Length: ________________ DURASTAR.COM...
Page 43 Gas Line Saturation: _________°F Liquid Line Saturation: _________°F Indoor Electrical Readings IDU Power/Control Wire Color: 1 __________________ 2 __________________ 3 ___________________ Voltage Readings: 1-2 ___________ AC 2-3 ___________DC Indoor Thermal Readings Return Air: _________°F Supply Air: _________°F Room Air: _________°F DURASTAR.COM...

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Dru1h18s2a Dru1u24s2a Dru1h24s2a Dru1u30s2a Dru1h30s2a Dru1u36s2a ... Show all

DURASTAR DRU1U18S2A Installation Manual

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