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MultiElite 2
Multi Split System Air Conditioner
Installation and Commissioning Guide
Model Numbers
MRC-075CS-3
MRC-100CS-4
MRC-120CS-5
IMPORTANT NOTE:
Please read this manual carefully before installing or operating your air conditioning unit. Make sure to save this manual for
future reference.
CAUTION:
The system is charged with flammable refrigerant, safety checks are necessary to ensure that the risk of ignition is minimised.
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Table of Contents
Related Manuals for actionair MultiElite 2 MRC-075CS-3
Summary of Contents for actionair MultiElite 2 MRC-075CS-3
- Page 1 MultiElite 2 Multi Split System Air Conditioner Installation and Commissioning Guide Model Numbers MRC-075CS-3 MRC-100CS-4 MRC-120CS-5 IMPORTANT NOTE: Please read this manual carefully before installing or operating your air conditioning unit. Make sure to save this manual for future reference. CAUTION: The system is charged with flammable refrigerant, safety checks are necessary to ensure that the risk of ignition is minimised.
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Page 2: Table Of Contents
Multi Split System Installation and Commissioning Guide Table of Contents 01. Symbols ............................3 02. Inspection ............................3 02.01. Product Inspections 02.02. Codes, Regulations and Standards 03. General Information ........................3 04. Safety Instructions .......................... 4 05. Installation Information ........................6 06. -
Page 3: Symbols
Multi Split System Installation and Commissioning Guide 01. Symbols Explanation of symbols displayed on the air conditioner. Information About This Guide This symbol shows that this appliance uses a flammable refrigerant. If the refrigerant leaks and exposed to an external ignition source, there is a risk of fire. This symbol shows that the Operation Manual should be read carefully. -
Page 4: Safety Instructions
Multi Split System Installation and Commissioning Guide Condenser Section Single DC inverter fan motor, with the following features: • Low noise operation. • Inverter rotary compressor. Electrical Section The electrical section is composed of a separate panel for controls, protecting the components from the elements. The electrical section is composed of a separate panel for controls, protecting the components from the elements. - Page 5 Multi Split System Installation and Commissioning Guide DANGER Hazardous Voltage - Risk of Electrocution. Turn Off the power from main isolator before proceeding with any service work of the unit. Observe proper LOCK-OUT/TAG-OUT (LOTO) procedures for electrical appliances in order to prevent accidental switching-on of the power supply.
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Page 6: Installation Information
Multi Split System Installation and Commissioning Guide 05. Installation Information All service technicians handling this unit must be licensed to handle R-32 refrigerant. Recover and Recycle Refrigerants Never release refrigerant to the atmosphere! It is an offence in Australia to do so. Always recover, recycle and reuse refrigerants. -
Page 7: Components
Multi Split System Installation and Commissioning Guide • Installer to ensure correct size/type that main circuit breaker and cable is installed in unit sub-mains to protect the sub-mains and unit wiring. • Installer to ensure correctly rated residual current device (RCD) is installed as per the latest version of the AS/NZS 3000 (also known as Australian Wiring Rules). - Page 8 Multi Split System Installation and Commissioning Guide Name of Accessories Model Adaptor Quantity Illustration MRC-075CS-3 Ø9.52 - Ø12.7 Pipe Adaptor Ø12.7 - Ø9.52 NOTE: Ø12.7 - Ø15.88 MRC-100CS-4 Pipe size may differ from Ø9.52 - Ø6.35 appliance to appliance. To Ø9.52 - Ø12.7 meet the different pipe size Ø12.7 - Ø9.52...
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Page 9: Installation Overview
Multi Split System Installation and Commissioning Guide 07. Installation Overview Installation Order INSTALLATION ORDER Install the outdoor unit Connect the refrigerant pipes Connect the wires Connecting pipe assembly Connecting the refrigerant pipes Connect the Wires Evacuate the refrigeration Perform a test run Leak Testing, Air Evacuation Perform a test run system... -
Page 10: Specifications
Multi Split System Installation and Commissioning Guide 08. Specifications Table 08.1 Indoor units that can be used in combination Number of connected units 1 to 5 Compressor stop/start frequency Stop time 3 min or more Voltage supply 230VAC Power source voltage Voltage fluctuation +10% to -6% of rated voltage 1 Outdoor... - Page 11 Multi Split System Installation and Commissioning Guide 09. Outdoor Unit Installation Install the unit by following local codes and regulations , there may be differ slightly between different regions. SPECIAL CONSIDERATI WEATHER Installation Instructions – Outdoor unit 09.01. Outdoor Unit Installation Instructions Step 1.
- Page 12 SPECIAL CONSIDERATIONS FOR EXTREME WEATHER Multi Split System Installation and Commissioning Guide s – Outdoor unit Special Consideration 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.
- Page 13 UNIT MOUNTING DIMENSIONS Multi Split System Installation and Commissioning Guide drain joint into the hole in the base CAUTION 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.
- Page 14 Multi Split System Installation and Commissioning Guide Rows of Series Installation The relations between H, A and L are as follows. L ≤ 1/2H 250mm or more L � H 1/2H < L ≤ H 300mm or more L > H Can not be installed Installation and Commissioning Guide - MultiElite 2 Split System Doc.
- Page 15 Multi Split System Installation and Commissioning Guide Drilling Hole In Wall You must drill a hole in the wall for the refrigerant piping, and the signal cable that will connect the indoor and outdoor units. (unit: mm/inch) Notes On Drilling Hole In Wall 1.
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Page 16: Refrigerant Piping Connection
WHILE CUTTING do not Multi Split System Installation and Commissioning Guide 10. Refrigerant Piping Connection Outdoor Model MRC-075CS-3 MRC-100CS-4 MRC-120CS-5 Minimum Field Pipe Length s – Maximum length for all rooms Maximum length for one indoor unit Maximum Vertical Liquid Pipe 3 x 6.35 (1/4) 4 x 6.35 (1/4) 4 x 6.35 (1/4) - Page 17 Multi Split System Installation and Commissioning Guide Pipe Flare Dimension and Tightening Torque Guide Flare Dimension (A) Pipe Tightening Flare Shape Size Torque (mm) (mm) Ø 6.35 18 - 20 Nm Ø 9.52 32 - 39 Nm 13.2 13.5 Ø 12.7 49 - 59 Nm 16.2 16.5...
- Page 18 Multi Split System Installation and Commissioning Guide 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. NOTE USE SPANNER TO GRIP MAIN BODY OF VALVE.
- Page 19 Multi Split System Installation and Commissioning Guide 9. Mount the Valve cover back. Total Installed Refrigerant Charge Label CAUTION If the indoor unit is installed at a higher position than the outdoor unit , there is chance that oil may flow into the compressor.
- Page 20 Multi Split System Installation and Commissioning Guide CAUTION If the outdoor unit is installed at a higher position than the indoor unit , it is recommended that the vertical suction risers not be upsized. Proper oil return to the compressor should be maintained with suction gas velocity. If velocities drop below 7.62 m/s, oil return will be decreased.
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Page 21: Wiring
Multi Split System Installation and Commissioning Guide 11. Wiring WARNING • Be sure to isolate the power supply before working on the unit. • All electrical wiring must be done according to local and national regulations. • Electrical wiring must be done by qualified technician. Improper connections may cause electrical malfunction, injury and fire. - Page 22 Multi Split System Installation and Commissioning Guide DIP switch F2: OFF/OFF Current Running Operation CN46 Operation Open Unit ON Closed No Change No CP Open No Change Unit OFF ON Last Closed No CP Setting DIP switch F2: ON/ON Current Running Operation CN46 Operation Open...
- Page 23 Multi Split System Installation and Commissioning Guide 11.01. Outdoor Unit Wiring WARNING Before performing any electrical or wiring work, isolate and LOCK-OUT/TAG-OUT(LOTO) power to the air conditioning unit. 1. Prepare the cable for connection • Ensure the correct size cable size has been selected, as per specifications. •...
- Page 24 Multi Split System Installation and Commissioning Guide Wiring Figure 11.02. Wiring Figure CAUTION CAUTION Connect the connective cables to the terminals, as identified, with their matching numbers on the terminal block of the indoor and outdoor units. For example, Terminal L1 (A) of the outdoor unit must connect with terminal L1/1 on the indoor unit.
- Page 25 1(L) 2(N) S 1(L) 2(N) S 1(L) 2(N) S TO UNIT A TO UNIT B TO UNIT C TO UNIT A TO UNIT B TO UNIT C Multi Split System Installation and Commissioning Guide BULKHEAD / MINI CASSETTE 2 MRC-100CS-4 One - Four Models (MRC-100CS-4) BULKHEAD / MINI CASSETTE SERENE...
- Page 26 1(L) 2(N) S 1(L) 2(N) S 1(L) 2(N) S 1(L) 2(N) S BULKHEAD / MINI CASSETTE TO UNIT A TO UNIT B TO UNIT C TO UNIT D TO UNIT A TO UNIT B TO UNIT C TO UNIT D Multi Split System Installation and Commissioning Guide ) S(D)
- Page 27 Multi Split System Installation and Commissioning Guide Circuit Breaker Size and Amps (Main Power Supply) 1. Compute the total FLA of all the installed equipment (outdoor + the combined indoor units) using the table below: Example: MRC-120CS-5 + 2x WRE-026CS + 2 x BRE-035CS + 1 x MRE-035CS Total System FLA = 19.0 + 2(0.24) + 2 (1.1) + 1 (0.57) = 22.25A Full Load Amps Table Model...
- Page 28 Multi Split System Installation and Commissioning Guide EXTRA LOW VOLTAGE DATA CONTROL WIRING MAINS WIRING (220-240VAC) 2 core shielded data cable 14/0.20 (0.44mm (Single Phase + Neutral) 50Hz maximum 65 metres CONTROL WIRING (220-240VAC) EXTRA LOW VOLTAGE DATA CONTROL WIRING (Single Phase + Neutral) 50Hz 4 core shielded data cable (0.75mm Unit: m/ft.
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Page 29: Wiring Diagram
Multi Split System Installation and Commissioning Guide 12. Wiring Diagram MRC-075CS-3 CN13 CN16 CN26 DSP1 CN28 CN34 Installation and Commissioning Guide - MultiElite 2 Split System Doc. No. 9590-5009 Ver. 1 211221... - Page 30 Multi Split System Installation and Commissioning Guide MRC-100CS-4 CN24 CN22 CN19 CN18 CN17 INDOOR PIPE OUT TEMP DSP1 CN15 (T2B) CN16 HP SWITCH CN20 CN14 LP SWITCH CN23 CN25 DR BOARD CHOKE Installation and Commissioning Guide - MultiElite 2 Split System Doc.
- Page 31 Multi Split System Installation and Commissioning Guide MRC-120CS-5 DR BOARD INDOOR PIPE OUT TEMP CN19 CN18 CN17 CN21 CN20 CN16 CN26 CN26 4-WAY VALVE CN26 T2B A-B-C-D-E CN26 INDOOR PIPE CN13 OUT TEMP CN26 CN33 CONDENSER TEMPERATURE SENSOR (T3) OUTDOOR AMBIENT TEMPERATURE SENSOR (T4) HP SWITCH LP SWITCH...
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Page 32: Air Evacuation
Preparations and Precautions Multi Split System Installation and Commissioning Guide 13. Air Evacuation Preparations and Precautions Air and foreign matter in the refrigerant circuit can cause abnormal rises in pressure, which can damage the air conditioner, reduce its efficiency, and cause injury. Use a vacuum pump and manifold gauge to evacuate the refrigerant BEFORE PERFORMING EVACUATION circuit, removing any non-condensable gas and moisture from the system. - Page 33 NOTE: ns and Precautions Multi Split System Installation and Commissioning Guide 8. Insert hexagonal wrench into the post valve (liquid line valve) and open the valve by turning the wrench 1/4 counterclockwise. Listen for gas to exit the system, then close the valve after 5 seconds. RFORMING EVACUATION nstructions 9.
- Page 34 akage Check Multi Split System Installation and Commissioning Guide 13.02. Safety And Leakage Check Electrical Safety Check Perform the electric safe check after completing installation. 1. Insulated resistance The insulated resistance must be more than 2MΩ. 2. Grounding work After finishing grounding work, measure the grounding resistance by visual detection and grounding resistance tester.
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Page 35: Test Run
Multi Split System Installation and Commissioning Guide 14. Test Run Before Test Run A test run must be performed after the entire system has been completely installed. Confirm the following points before performing the test: 1. The indoor and outdoor units are properly installed. 2. -
Page 36: Automatic Wiring/Piping Correction Function
Multi Split System Installation and Commissioning Guide Automatic Wiring/Piping Correction Function 15. Automatic Wiring/Piping Correction Function More recent models now feature automatic correction of wiring/piping errors. Press the Check Switch on the outdoor unit PCB board for 5 seconds until the LED displays CE, indicating that this function is working. Approximately 5-10 minutes after the switch is pressed, the CE disappears, meaning that the wiring/piping error is corrected and all wiring/ piping is properly connected. - Page 37 Multi Split System Notes ..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Installation and Commissioning Guide - MultiElite 2 Split System Doc.
- Page 38 Multi Split System Notes ..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Installation and Commissioning Guide - MultiElite 2 Split System Doc.
- Page 39 Multi Split System Notes ..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Installation and Commissioning Guide - MultiElite 2 Split System Doc.
- Page 40 Refrigerant Trading Authorisation No.: AU06394 ©Copyright 2021 Actron Engineering Pty Limited ABN 34 002767240. ®Registered Trade Marks of Actron Engineering Pty Limited. ActronAir is constantly seeking ways to improve the design of its products. Therefore, specifications are subject to change without notice. Installation and Commissioning Guide - MultiElite 2 Split System Doc.
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