DURASTAR DRA1U30S1A Installation Manual

Single zone side-discharge heat pump: 30k to 60k

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INSTALLATION MANUAL

Single Zone Side-Discharge Heat Pump:

30K to 60K

DRA1U30S1A, DRA1U36S1A, DRA1U48S1A, DRA1U60S1A

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 DRA1U30S1A, DRA1U36S1A, DRA1U48S1A, DRA1U60S1A 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
WIRING THE OUTDOOR UNIT ........................21 CONTROL LOGIC ..............................24 POWER SPECIFICATIONS ..........................24 FINAL CHECKS ..............................26 TEST RUN ................................27 TROUBLESHOOTING ............................. 28 LED DISPLAY ..............................29 ERROR AND OPERATING CODES ......................30 WIRING DIAGRAMS ............................31 JOB SITE INFORMATION SHEET ......................33 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
• In certain environments, such as kitchens, server rooms, etc., the use of specially designed air handler units is highly recommended. • As with any mechanical equipment, contact with sharp sheet metal edges can result in personal injury. Take care while handling this equipment and wear gloves and protective clothing. DURASTAR.COM...
Page 5 • After turning on the power, always wait 10 minutes or more before you touch the electrical components. • Make sure that you do not cross your electrical wiring with your signal wiring. This may cause distortion, interference or possibly damage to circuit boards. • Connect the outdoor wires before connecting the indoor wires. DURASTAR.COM...
Page 6 • When moving or relocating the air handler, consult experienced service technicians for disconnection and re-installation of the unit. • Excessive Weight Hazard - Use two (2) or more people when moving and installing the unit. Failure to do so can result in back or other type of injury. DURASTAR.COM...
Page 7: Operating Temperatures
Regularly inspect and clean air filters. NOTE Your Durastar air handler'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
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 9: Parts Identification
The installation may be slightly different in different areas. Signal Cable, Air Inlets Refrigerant Pipes, and Drain Hose 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 10: 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 11: Step 2: Install The Drain Joint
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. DURASTAR.COM...
Page 12: Step 3: Mount The Outdoor Unit
Top View Front View OUTDOOR UNIT DIMENSIONS MOUNTING DIMENSIONS MODEL inch inch inch inch inch DRA1U30S1A 37-1/4 31-15/16 16-3/16 26.5 5-7/8 DRA1U36S1A 37-1/4 31-15/16 16-3/16 26.5...
Page 13: 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 14 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: (Actual pipe length - Standard pipe length) x Additional Refrigerant Charge WARNING DO NOT mix refrigerant types.
Page 15 Indoor unit/ Outdoor unit Suction Line Oil Trap Unit < 36k then 20ft (6m) Unit > 36k then 32ft (10m) Liquid Line Indoor unit/ Outdoor unit Unit < 36k then 20ft (6m) Unit > 36k then 32ft (10m) DURASTAR.COM...
Page 16 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 17 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 18 1. Align the center of the two pipes that you will connect. Manifold Gauge Low pressure Flare nut gauge Low pressure High pressure valve valve Low pressure hose Auxiliary hose Vacuum pump Valve body Valve stem DURASTAR.COM Low pressure valve...
Page 19 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 20: 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 21: 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 next page.) DURASTAR.COM...
Page 22 The shield and drain conductor must be grounded at the outdoor unit and stripped back and taped at the indoor unit. Grounding at both ends results in an increase of noise transmitted onto the signal wires. DURASTAR.COM...
Page 23 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, cased coil, and gas furnace.
Page 24: Control Logic
POWER SPECIFICATIONS Voltage Cooling Cooling Input Heating Heating Input Model Number MCA (A) MOCP (A) Range (V) Current (A) Power (W) Current (A) Power (W) DRA1U30S1A 187-253 13.20 2835 12.40 2795 DRA1U36S1A 187-253 15.82 3560 15.80 3110 DRA1U48S1A 187-253 23.20 5320 22.50...
Page 25 Wiring for 2H and 2C Thermostat Wiring for 2H and 1C Thermostat S4-1 Defaults ON: W1 and W2 set for single stage Aux heat. Turn OFF to separate stages. Wiring for 1H and 1C Thermostat Wiring for 1H and 1C Thermostat DURASTAR.COM...
Page 26: Final Checks
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. DURASTAR.COM...
Page 27: Test Run
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 28: 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 29: 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 30: Error And Operating Codes
Outdoor fan speed has been out of control PC 0L Low ambient temperature protection LC 06 High temperature protection of IPM module EC 55 Outdoor IPM module temperature sensor fault PH 90 High temperature protection of evaporator PH 91 Low temperature protection of evaporator DURASTAR.COM...
Page 31: Wiring Diagrams
WIRING DIAGRAMS DRA1U30S1A & DRA1U36S1A 16022000036170 OPTIONAL COMP_TOP NOTE Four-way valve is used in the cooling YELLOW BROWN(RED) BLUE(BLACK) & heating unit only PRESSURE SENSOR SUCTION TEMP. SENSOR BLACK CN11 YELLOW WHITE BLUE(BLACK) REFRIGERANT TEMP. SENSOR RED(BROWN) CN28 OPTIONAL AC CURRENT DETECTOR...
Page 32 DRA1U48S1A & DRA1U60S1A DURASTAR.COM...
Page 33: 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 34 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...
Page 35 THIS PAGE INTENTIONALLY LEFT BLANK. DURASTAR.COM...

This manual is also suitable for:

Dra1u36s1a Dra1u48s1a Dra1u60s1a

DURASTAR DRA1U30S1A Installation Manual

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