Related Manuals for Lennox LNINVE025V4
Summary of Contents for Lennox LNINVE025V4
- Page 1 LENNOX MULTI SPLIT INVERTER AIR CONDITIONER Installation Manual Outdoor Unit - Series 4...
- Page 2 LENNOX MULTI SPLIT INVERTER Outdoor Unit CONTENTS 1.0. Preface 2.0. Safety Precautions 3.0. Product Introduction 4.0. Parts 5.0. Installation Instructions 6.0. Air Purging and Refrigerant Charge 7.0. Electrical Connections and Wiring 8.0. Troubleshooting 9.0. Maintenance 13 23 50 lennoxaus.com.au...
- Page 3 LENNOX MULTI SPLIT INVERTER Outdoor Unit This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
- Page 4 LENNOX MULTI SPLIT INVERTER Outdoor Unit 1.0. PREFACE Please carefully read this manual before installation and operation. When reading this manual, please be aware of the following key user notices: • This unit measures based on AS/NZS 60335.2.40:2006 • For your personal safety when operating this system, always follow the instructions in the manual.
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Page 5: Safety Precautions
LENNOX MULTI SPLIT INVERTER Outdoor Unit 2.0. SAFETY PRECAUTIONS 2.1. Explanation of Symbols Indicates a hazardous situation that, if not avoided, will result in death or DANGER serious injury. Indicates a hazardous situation that, if not avoided, could result in death WARNING or serious injury. - Page 6 LENNOX MULTI SPLIT INVERTER Outdoor Unit • Ensure a correctly sized power cord is used. Never use a damaged power cord or connection wire. The connection wire should be replaced by exclusive cable. • After connecting the power cord, ensure the electric box cover is properly secured to avoid potential accidents.
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Page 7: Product Introduction
3.0. PRODUCT INTRODUCTION • The Lennox Multi Split Inverter Series 4 incorporates inverter compressor technology. This stepless operation can vary the capacity within range of 15% to 120%. The multi split inverter is ideal for both residential and commercial applications. -
Page 8: Combinations For Outdoor And Indoor Units
LENNOX MULTI SPLIT INVERTER Outdoor Unit 3.2. Combinations for Outdoor and Indoor Units • See Figure 2 for combinations of outdoor and indoor Units. For the Multi Split System, one outdoor unit can be connected to up to five indoor units (wall split, cassette, or slim line ducted). The outdoor unit will run if any one indoor unit receives the running command, and all indoor units stop once the outdoor unit is turned off. -
Page 9: Operating Temperature Ranges
LENNOX MULTI SPLIT INVERTER Outdoor Unit 3.3. Rated Working Conditions Table 3: Rated Working Conditions Indoor Side State Outdoor Side State Dry Bulb Temp. °C Wet Bulb Temp. °C Dry Bulb Temp. °C Wet Bulb Temp. °C Rated Cooling Rated Heating NOTICE: •... - Page 10 LENNOX MULTI SPLIT INVERTER Outdoor Unit 4.0. PARTS NOTICE: • Prior to installation, ensure you have the following parts listed in Table 5. Table 5: Parts Required for Installation Number Description Picture Quantity Tube Connector Sub Assembly 13 23 50...
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Page 11: Installation Instructions
LENNOX MULTI SPLIT INVERTER Outdoor Unit 5.0. INSTALLATION INSTRUCTIONS 5.1. Installation Location WARNING • Position the unit away from direct sunlight for optimum performance. Install the unit in a position away from dust and potential debris. • Always position the unit away from combustible, flammable and corrosive gas or exhaust gas. -
Page 12: Piping Connection
LENNOX MULTI SPLIT INVERTER Outdoor Unit 5.3. Piping Connection NOTICE: • The maximum pipe length is shown in Table 6. • Use waterproof insulating pipe. • Wall thickness of pipe: 0.5mm - 1.0mm; bearing pressure: 3.0MPa • The longer the connection of the pipe, the more colling and heating capacity will decrease. -
Page 13: Installation Of The Connection Pipe
LENNOX MULTI SPLIT INVERTER Outdoor Unit LNMT114V4 Figure 5: LNMT114V4 Outdoor Unit Dimensions 5.5. Installation of the Connection Pipe • Connection piping for the indoor and outdoor units are depicted in manifold mode as per Figure 6. Figure 6: Connection Piping (Manifold Mode) 13 23 50 lennoxaus.com.au... - Page 14 LENNOX MULTI SPLIT INVERTER Outdoor Unit 5.6. Piping Between Indoor and Outdoor Units Ensure the liquid and gas stop valves marked A, B, C, D and E are closed if they have not been connected to the indoor units. Refer to Table 7 for the moments of torque for tightening screws.
- Page 15 LENNOX MULTI SPLIT INVERTER Outdoor Unit 5.7. Allowable Pipe Length and Drop Height Between Indoor and Outdoor Units NOTICE: • If the total refrigerant pipe length (liquid pipe) is smaller than that listed in the table below, no additional refrigerant will be charged.
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Page 16: Insulating The Refrigerant Pipe
LENNOX MULTI SPLIT INVERTER Outdoor Unit 5.8. Insulating the Refrigerant Pipe • The refrigerant pipe should be insulated and taped to prevent condensation and water leakage. • The joints of the indoor unit should be wrapped with the insulation material. Ensure there is no gap is on the joint of the indoor unit, as shown in Figure 8. -
Page 17: Air Purging And Refrigerant Charge
LENNOX MULTI SPLIT INVERTER Outdoor Unit 6.0. AIR PURGING AND REFRIGERANT CHARGE 6.1. Air Purging The outdoor unit has been pre-charged before shipment. Additional refrigerant charge may be required during the field installation. Ensure the liquid valve and the gas valve of the outdoor unit are closed fully. - Page 18 LENNOX MULTI SPLIT INVERTER Outdoor Unit 6.2. Additional Refrigerant Charging • Refrigerant charge is only in the outdoor unit prior to shipment. NOTICE: • Outdoor unit has been pre-charged with refrigerant. The refrigerant charge is not included in the indoor unit and the refrigerant pipe.
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Page 19: Electrical Connections And Wiring
LENNOX MULTI SPLIT INVERTER Outdoor Unit 7.0. ELECTRICAL CONNECTIONS AND WIRING 7.1. Wiring Precautions DANGER • The installation must be conducted in accordance with local and national wiring regulations, codes and standards. • Only the power cord with the rated voltage and specified circuit for air conditioner can be used. - Page 20 LENNOX MULTI SPLIT INVERTER Outdoor Unit LNMT100V4 Figure 10: LNMT100V4 Wiring Diagram LNMT114V4 Figure 11: LNMT114V4 Wiring Diagram 13 23 50 lennoxaus.com.au...
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Page 21: Earthing Requirements
LENNOX MULTI SPLIT INVERTER Outdoor Unit 7.2. Earthing Requirements DANGER • The air conditioner is a Class 1 electric appliance. It must be properly earthed using a specialised earthing device installed by a professional. Please make sure it is earthed effectively, otherwise it may cause electric shock. - Page 22 LENNOX MULTI SPLIT INVERTER Outdoor Unit 7.4. Wiring of the Power Cord Open the side plate. Connect the power card to the terminals “L”, “N” and also the earthing bolt, and then connect the wiring terminals “N(1),2,3” of the indoor unit to those of the outdoor unit correspondingly.
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Page 23: Troubleshooting
LENNOX MULTI SPLIT INVERTER Outdoor Unit 8.0. TROUBLESHOOTING WARNING • In the event of abnormal operation (e.g.. burning smell), shut off the main power supply immediately and then contact the authorised service agent. • Do not attempt to repair the air conditioning yourself as this may cause electric shock, injury or damage to the unit. - Page 24 LENNOX MULTI SPLIT INVERTER Outdoor Unit Table 12: Abnormal Operating Conditions and Reasons “Malfunction” Reason Air conditioner doesn’t run • When starting the unit • The overload switch immediately after turning protecting the unit results the unit off in a 3 minute delay •...
- Page 25 LENNOX MULTI SPLIT INVERTER Outdoor Unit 8.1. Error Codes • The error code will be displayed on the wired controller and the main board of the outdoor unit. A list of error codes is shown in Table 13. Table 13: Error Codes...
- Page 26 LENNOX MULTI SPLIT INVERTER Outdoor Unit Table 13: Error Codes (Continued) Malfunction Indicator Display Indoor Display Yellow Light Red Light Green Light PFC Module Temperature Flash 15 Times Protection Low Pressure Protection Flash 17 Times High Pressure Protection Flash 18 Times...
- Page 27 LENNOX MULTI SPLIT INVERTER Outdoor Unit Table 13: Error Codes (Continued) Malfunction Indicator Display Indoor Display Yellow Light Red Light Green Light Gas Pipe Temperature Flash 20 Times Sensor Malfunction (B) Liquid Pipe Temperature Flash 21 Times Sensor Malfunction (C)
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Page 28: Maintenance
LENNOX MULTI SPLIT INVERTER Outdoor Unit 9.0. MAINTENANCE CAUTION • Regular maintenance and service should be performed by authorised personnel to prolong the unit life span. 9.1. Outdoor Heat Exchanger • Outdoor heat exchanger is required to be cleaned once every two months. - Page 29 LENNOX MULTI SPLIT INVERTER Outdoor Unit CAUTION • During airtight and leakage testing, only use nitrogen or refrigerant for these tests. • Never mix oxygen, ethyne and other dangerous gases into refrigeration circuit. 13 23 50 lennoxaus.com.au...
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- Page 32 13 23 50 lennoxaus.com.au The contents of this brochure are copyright protected and may not be reproduced in any form without the written consent of Kirby HVAC&R. Recommendations and advice regarding the use of the products described in this publication are to be taken as a guide only and are given without liability on the part of the company or its employees.
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