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Summary of Contents for Lennox 4 Series
- Page 1 LENNOX MULTI SPLIT INVERTER AIR CONDITIONER Installation Manual Slim Line Ducted Indoor Unit - Series 4...
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Page 2: Table Of Contents
LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit CONTENTS 1.0. Safety Precautions 2.0. Installation Location 3.0. Installation Instructions 4.0. Rated Working Conditions 5.0. Troubleshooting 6.0. Maintenance 13 23 50 lennoxaus.com.au... - Page 3 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor 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.
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Page 4: Safety Precautions
LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit 1.0. SAFETY PRECAUTIONS 1.1. 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 5 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit • If the following occurs, please turn off air conditioner and disconnect power immediately, and contact the dealer or a qualified professional for service. • Power cord is overheating or damaged.
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Page 6: Installation Location
LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit 2.0. INSTALLATION LOCATION The installation of the unit must comply with all national and local safety regulations. The installation quality directly affects the normal use of the unit, installation and troubleshooting of the unit should be installed by a qualified technician. - Page 7 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit • Do not apply excessive force to the power cord. • The electrical installation should be carried out by the technician as instructed by the local and national regulations, codes and standards. This manual should be followed.
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Page 8: Installation Instructions
LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit 3.0. INSTALLATION INSTRUCTIONS 3.1. Indoor Unit Dimensions NOTICE: • All dimensions are listed in millimetres (mm), unless otherwise specified. Figure 1 is applicable to LNMTDSS025V4, LNMTDSS035V4, LNMTDSS050V4, LNMTDSS060V4 and LNMTDSS071V4: Figure 1: Indoor Unit Dimensions... - Page 9 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit 3.2. Indoor Unit Installation Space Requirements NOTICE: • All dimensions are listed in millimetres (mm), unless otherwise specified. Figure 2: Indoor Unit Installation Space Requirements 3.3. Indoor Unit Installation Installation Location Requirements •...
- Page 10 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit Installation of the Indoor Unit Drill hole suitable for the M10 expansion bolt. Insert the M10 expansion bolt into the hole, and then knock the nail into the bolt. Refer to the drawings for the distance between holes and see Figure 3 for the installation of the expansion bolt.
- Page 11 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit CAUTION Prior to installation, prepare all piping (refrigerant pipe, drain pipe) and wiring (wired controller, wires between the indoor and outdoor unit) of the indoor unit Reinforce ceiling openings to reduce vibration and noise transmission. Consult a qualified tradesperson for advice.
- Page 12 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit 3.5. Installation of the Air Supply Duct Installation of Rectangular Air Supply Duct Figure 7 shows the correct arrangement for rectangular air supply ducting. Table 2 indicates the parts required. Duct work should be installed in accordance with relevant standards and codes.
- Page 13 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit Table 3: Parts Required for Installation of Round Air Supply Duct Name Name Hanger Transition Duct Return Air Duct Air Supply Duct Canvas Duct Diffuser Return Air Louver Diffuser Joint Air Supply Outlet...
- Page 14 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit 3.6. Supply Air Outlet and Return Air Inlet Dimensions NOTICE: All dimensions are listed in millimetres (mm), unless otherwise specified. Figures 9 & 10: Supply Air Outlet and Return Air Outlet Dimensions...
- Page 15 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit Figure 11: Location of the Rectangular Duct Mounting Flange If downward return air is desired, swap the rectangular flange and the return air cover plate. Connect one end of the return air duct to the return air outlet of the unit and the other to the return air louver.
- Page 16 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit 3.8. Installation of the Condensate Pipe The condensate pipe should be installed at an angle of 5 - 10° to facilitate the drainage of condensate water from the unit. The condensate pipe should be insulated to minimise condensation (See Figure 13).
- Page 17 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit be fixed as close as possible to the side of the unit. The drain pipe is not supplied with the unit and should be provided by others. Slide the end of the PVC pipe over the drain outlet and secure with a hose clamp.
- Page 18 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit • Figures 16 & 17: Installing a Lift Pipe NOTICE: • To prevent excessive force on the unit drain outlet, the drain hose connection between the lift pipe and the drain pipe should not be misaligned by more than 75mm (See Figure 17).
- Page 19 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit Table 6: Moments of Torque for Tightening Screws Diameter of Pipe (mm) Moment of Torque (Nm) φ6.35 15-30 φ9.52 35-40 φ12.0 45-50 φ15.9 60-65 Figure 18: Tightening the Joint 4. Refrigerant pipe bends shall be of suitable radius to prevent cracking or crimping. All bends shall be made using a pipe bender to bend the pipe.
- Page 20 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit Figure 19: Insulation for the Refrigerant Pipe Wrapping the pipe with tape. • Wrap the pipe from the bottom of the outdoor unit to the top of the pipe where it enters the wall.
- Page 21 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit Multi-Core Wire Strip 10mm of the insulating layer at the end of the wire a with a wire stripper. Loosen the screw on the wiring board of the air conditioning unit.
- Page 22 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit 3.15. Wiring of the Power Cable (Single Phase) CAUTION • The power supply for each indoor unit must be uniform. Remove the cover of the electric box of the indoor unit.
- Page 23 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit LNMT114V4 Figure 22 - Wiring of the Power Cable - LNMT114V4 13 23 50 lennoxaus.com.au...
- Page 24 LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit 3.16. Wiring of the Signal Line of the Wired Controller Open the cover of the electric box of the indoor unit. Insert the signal line through the rubber ring. Insert the signal line to the four-pin socket on the circuit board of the indoor unit.
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Page 25: Rated Working Conditions
LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit 4.0. RATED WORKING CONDITIONS Table 8: Working Temperature Range Indoor Side State Outdoor Side State Dry Bulb Temp °C Wet Bulb Temp °C Dry Bulb Temp °C Wet Bulb Temp °C Rated Cooling Max. -
Page 26: Troubleshooting
LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit 5.0. TROUBLESHOOTING • If the air-conditioning unit operates abnormally, please check the following items before contacting an authorised service agent. Table 9: Common Errors and Possible Causes Errors Possible Causes Failed start up •... -
Page 27: Maintenance
LENNOX MULTI SPLIT INVERTER Slim Line Ducted Indoor Unit 6.0. MAINTENANCE CAUTION Take notice of the following items before cleaning your air conditioning unit: Turn off the main power supply before contact with any wiring device. Only when the unit is turned off and the main power supply is cut off, can the unit be cleaned;... - Page 28 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.