MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNIT INSTALLATION MANUAL Models: LMN079HVT LSN090HSV5 LSN120HSV5 LMN159HVT LSN180HSV5 LMN249HVT 7 kBtu 9 kBtu 12 kBtu 15 kBtu 18 kBtu 24 kBtu
PROPRIETARY DATA NOTICE This document, as well as all reports, illustrations, data, information, and other materials are the property of LG Electronics U.S.A., Inc., and are disclosed by LG Electronics U.S.A., Inc., only in confidence. This document is for design purposes only. Do not throw away, destroy, or lose this manual. Please read carefully and store in a safe place for future reference. Content familiarity required for proper installation.
MULTI F MULTI F MAX SAFETY INSTRUCTIONS The instructions below must be followed to prevent product malfunction, property damage, injury or death to the user or other people. Incorrect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the symbols described below. TABLE OF SYMBOLS DANGER This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
MULTI F MULTI F MAX SAFETY INSTRUCTIONS INSTALLATION - CONTINUED WARNING If the air conditioner is installed in a small space, take measures to prevent the refrigerant concentration from exceeding safety limits in the event of a refrigerant leak. Multi F Standard Wall-Mounted Indoor Unit Consult the latest edition of ASHRAE (American Society of Heating, Refrigerating, and Air Conditioning Engineers) Standard 15.
MULTI F MULTI F MAX SAFETY INSTRUCTIONS WIRING 7XUQ WKH SRZHU Rႇ DW WKH QHDUHVW GLVFRQQHFW EHIRUH VHUYLFLQJ the equipment. DANGER Electric shock can cause physical injury or death. High voltage electricity is required to operate this system. Adhere to the National Electrical Codes and these instructions when wiring. Properly size all circuit breakers or fuses. 7KHUH LV ULVN RI ¿UH HOHFWULF VKRFN H[SORVLRQ SK\VLFDO LQMXU\ RU GHDWK Improper connections and inadequate grounding can cause accident
MULTI F MULTI F MAX SAFETY INSTRUCTIONS OPERATION Periodically verify that the hardware securing the unit has not deteriorated. DANGER 'R QRW SURYLGH SRZHU WR RU RSHUDWH WKH XQLW LI LW LV ÀRRGHG or submerged. If the unit falls from its installed location, it can cause property damage, product failure, physical injury or death. 7KHUH LV ULVN RI ¿UH HOHFWULF VKRFN SK\VLFDO LQMXU\ RU GHDWK If refrigerant gas leaks out, ventilate the area before operating the unit.
MULTI F MULTI F MAX TABLE OF CONTENTS Safety Instructions ......................................................................................................................................................................................................... 3 Unit Nomenclature.......................................................................................................................................................................................................... 8 General Data .............
MULTI F MULTI F MAX UNIT NOMENCLATURE Multi F Multi-Zone Systems — Indoor Units L M N 159 Multi F Standard Wall-Mounted Indoor Unit L = LG Frame Type: M = Multi-Zone A/S = Single Zone (Gen 4, 5 Single Zone units also compatible with Multi Zone) Component: AN: Art Cool™ Wall-Mounted Indoor Unit N: Standard Wall-Mounted Indoor Unit CN: Four-Way Ceiling-Cassette Indoor Unit DN: Ceiling-Concealed Duct (Low Static) Indoor Unit HN: Ceiling-Concealed Duct (High Static) Indoor Unit VN: Vertical-Horizontal Ai
MULTI F MULTI F MAX INTRODUCTION Multi F and Multi F MAX Standard Wall-Mounted Units Figure 1: Multi F Standard Wall-Mounted HVT Indoor Unit. This manual describes how to install the LG Multi F and Multi F MAX (Multi Zone) Standard Wall-Mounted Indoor Units (IDU) for Multi F heat pump systems. The table on the next page lists the available models. Refer to LG’s Multi F Indoor Unit Engineering Manual for complete detailed engineering data and selection procedures.
MULTI F MULTI F MAX INTRODUCTION Included Parts Part Quantity Installation Plate One (1) Image Multi F Standard Wall-Mounted Indoor Unit 7,000 ~ 15,000 Btu/h Indoor Units 18,000 and 24,000 Btu/h Indoor Units Type “A” Screws Five (5) Type “B”, “C”, and “D” Screws (Example image; appearances will vary) Two (2) Each Type Wireless Controller with Holder AKB74955602 One (1) Connectors (For use with Multi F Systems) One (1) Each for 3/8 inch ĺ 1/2 inch One (1) Each for 5/8 inch ĺ 1/2 inch On
MULTI F MULTI F MAX GENERAL DATA R410A Refrigerant R410A refrigerant has a higher operating pressure in comparison to R22 refrigerant. All piping system materials installed must have a higher resisting pressure than the materials traditionally used in R22 systems. R410A refrigerant is an azeotrope of R32 and R125, mixed at 50:50. The ozone depletion potential (ODP) is 0. WARNING • Do not place refrigerant cylinder in direct sunlight. Refrigerant cylinder will explode causing severe injury or death.
MULTI F MULTI F MAX GENERAL DATA 6SHFL¿FDWLRQV Table 2: Multi F Multi Zone Standard Wall-Mounted Indoor Unit Speci¿cations.
GENERAL DATA 'LPHQVLRQV MULTI F MULTI F MAX Figure 3: LMN079HVT, LSN090HSV5, LSN120HSV5, and LMN159HVT Dimensions. Unit : Inch (mm) 1-7/16 (33.5) Bottom Display & Remote Controller Signal Receiver 2-3/8 (60) 3-5/8 (92) Left & Right 55° Rear Right 12-1/8 (308) 7-7/16 (189) 2 (51) Refrigerant, Drain Pipe and Cable Routing Knock Out Hole 5/16 (8) 2-7/32(56) Left Rear piping Refrigerant, Drain Approx.
[36-5/32 (918)] Air Intake Hole Air Outlet 8-9/32 (210) Air Intake 7/16 (11) 2-3/8 (60) Refrigerant, Drain Pipe and Cable Routing Knock Out Hole Unit Outline Ø2-9/16" Place a Level on Raised Tab C Type: 19.8 Ø2-9/16" 3.3 C Type: 5.9 6-15/32 (164) In case of Left Side Piping Attaching the Installation Plate, Drilling Hole C Type: 19.4 Measuring Tape 39-9/32 (998) Measuring Tape Hanger Unit Outline Connecting Gas/Liquid Pipe Right Rear piping Rear Right Bottom 3.3 C Type: 5.3 Approx.
MULTI F MULTI F MAX GENERAL DATA 5HIULJHUDQW 3LSLQJ 'LDJUDP Figure 5: Multi F Standard Wall-Mounted Indoor Unit Refrigerant Flow Diagram (9HVT and HSV5). Gas pipe connection port (flare connection) Cooling Thermistor for Evaporator Outlet Temperature Cross Flow Fan Thermistor for Indoor Air Temperature Heating Heat Exchanger M Table 3: Multi F Standard Wall-Mounted Indoor Unit Refrigerant Pipe Sizes. Model No.
INSTALLATION 8QSDFN DQG ,QVSHFW MULTI F MULTI F MAX Unpack and Inspect for Freight Damage CAUTION Multi F Standard Wall-Mounted Indoor Unit 6KLSSLQJ DQG QHW ZHLJKWV RI WKH ZDOO PRXQWHG XQLWV DUH OLVWHG LQ WKH VSHFL¿FDWLRQV WDEOH 7R KHOS DYRLG LQMXU\ WR SHUVRQQHO DQG GDPDJH WR WKH XQLW use two people when carrying a unit by hand. • Shipping and net weights of the ceiling cassette units are listed in the specification tables in the beginning of this manual.
MULTI F MULTI F MAX INSTALLATION ,QGRRU 8QLW /RFDWLRQ 6HOHFWLRQ Location Selection Follow required best practices when choosing a location for the Standard Wall-Mounted Indoor Units (IDU). DANGER 7R DYRLG WKH SRVVLELOLW\ RI ¿UH GR QRW LQVWDOO WKH XQLW LQ DQ DUHD ZKHUH FRPEXVWLEOH JDV ZLOO JHQHUDWH ÀRZ VWDJQDWH RU OHDN )DLOXUH WR GR VR ZLOO cause serious bodily injury or death. Before beginning installation, read the safety summary at the beginning of this manual.
MULTI F MULTI F MAX INSTALLATION /RFDWLRQ 6HOHFWLRQ 5HTXLUHG &OHDUDQFHV • Indoor units (IDUs) must not be placed in an environment where the IDUs will be exposed to harmful volatile organic compounds (VOCs) or in environments where there is improper air make up or supply or inadequate ventilation. If there are concerns about VOCs in the environment where the IDUs are installed, proper air make up or supply and/or adequate ventilation must be provided.
MULTI F MULTI F MAX INSTALLATION &KRRVH 3LSLQJ DQG :LULQJ 5RXWH 'ULOOLQJ 3LSLQJ +ROH General Guidelines — HVT and HSV5 Wall-Mounted Indoor Units Wall-mounted indoor units have several options on how the piping and wiring can be routed (see figure at right). Whichever way the piping and wiring are routed out of the indoor units, the mounting wall on which the indoor unit is installed must be strong and solid enough to protect it from vibration.
MULTI F MULTI F MAX INSTALLATION 3UHSDULQJ IRU ,QVWDOODWLRQ Mounting the Installation Plate to the Wall WARNING Figure 10: General Wall Mount Indoor Unit Installation Plate— Side View (Example Only. Appearances Will Vary Depending on Model). Installation Plate Frame Hooks Type "A" Screws • Mounting hardware must be securely installed to prevent the frame falling from its installation location. There is risk of property damage from falling equipment. • Select the location carefully.
MULTI F MULTI F MAX INSTALLATION 3UHSDULQJ IRU ,QVWDOODWLRQ Removing the Indoor Unit Bottom Cover — HVT Wall-Mounted Indoor Units To access the indoor unit piping port connections, terminal block, and to make the indoor unit installation procedure easier, it is recommended that the bottom cover be removed first. Figure 14: Latch over Screws on Indoor Unit Bottom Panel. 1. Fully open the front panel. 2. At the bottom panel of the indoor unit, unsnap the latches that cover the screws.
MULTI F MULTI F MAX INSTALLATION 3UHSDULQJ IRU ,QVWDOODWLRQ Removing the Indoor Unit Bottom Cover — HSV5 Wall-Mounted Indoor Units Multi F Standard Wall-Mounted Indoor Unit To access the indoor unit piping port connections, terminal block, and to make the indoor unit installation procedure easier, it is recommended that the bottom cover be removed first. 1. Unsnap the bottom cover at its top left and right sides (Location 1). Figure 17: Removing the HSV5 Bottom Cover.
MULTI F MULTI F MAX INSTALLATION 0RXQWLQJ WKH ,QGRRU 8QLW Mounting the Indoor Unit to the Installation Plate — HVT and HSV5 WallMounted Indoor Units 1. Position the indoor unit onto the upper portion of the installation plate. Figure 22: Attaching the Indoor Unit to the Installation Plate. 2. Engage the hooks at the top of the indoor unit with the upper edge of the installation plate (number of hooks depends on model type). 3.
MULTI F MULTI F MAX INSTALLATION ,QGRRU 8QLW &RQQHFWLRQV 3UHSDULQJ IRU 3LSLQJ (OHFWULFDO &RQQHFWLRQV 1. To prepare the indoor unit for piping and electrical installation, disengage bottom on indoor unit from installation plate by reversing Steps 6, 5, and 4 from the previous procedure, if those procedures have been performed. Figure 25: Mounting the Indoor Unit on Installation Plate. Multi F Standard Wall-Mounted Indoor Unit 2.
MULTI F MULTI F MAX INSTALLATION ,QGRRU 8QLW &RQQHFWLRQV • Do not bend the piping directly backwards or to the left or right sides without bending it downward first; this will damage the indoor unit piping. • Do not forcibly press the refrigerant piping onto the bottom frame or the front grille; this will damage the indoor unit piping and / or indoor unit frame. • Ensure the piping is straight. Do not kink the piping; this will damage the indoor unit and piping. Figure 29: Improper Piping Bending.
MULTI F MULTI F MAX INSTALLATION ,QGRRU 8QLW &RQQHFWLRQV Piping Installation When Piping is on the Right Side Figure 32: Piping Installation When Piping is on the Right Side. Multi F Standard Wall-Mounted Indoor Unit Right Side Piping See the Electrical System Installation section for information on how to connect the communication / connection (power) wiring from the outdoor unit. 1. Align the center of the refrigerant piping and corresponding connection as shown. 2.
MULTI F MULTI F MAX INSTALLATION ,QGRRU 8QLW &RQQHFWLRQV Bundling Figure 34: Bundling the Connection Components (From Outdoor Unit to Indoor Unit). Indoor unit pipe Connection pipe Vinyl tape (wide) Wrap with vinyl tape Connecting cable Pipe Vinyl tape (narrow) Figure 35: Cutaway of Proper Pipe and Cable Bundling. Vapor Line Insulation Material Liquid Line • Always include insulation on all refrigerant and drain piping to ensure condensate does not form and cause damage to walls, floors, etc.
MULTI F MULTI F MAX INSTALLATION )ODULQJ 3URFHGXUH Flaring Procedure One of the main causes of refrigerant leaks is a defective connection. For LG HVAC systems, the installer needs to know how perform flared connections successfully. • During installation, it is imperative to keep the piping system free of contaminants and debris such as copper burrs, slag, or carbon dust. Do not use kinked pipe caused by excessive bending in one specific area on its length.
MULTI F MULTI F MAX INSTALLATION )ODULQJ 3URFHGXUH Tightening the Flare Nuts Tightening Torque for Flare Nuts. Pipe Size (in. O.D.) Outside Diameter (mm) Tightening Torque (ft-lbs.) 13.0 - 18.0 1/4 6.35 9.52 24.6 - 30.4 3/8 39.8 - 47.7 1/2 12.7 45.4 - 59.3 15.88 5/8 71.5 - 87.5 19.05 3/4 1. When connecting the flare nuts, coat the flare (outside only) with polyvinyl ether (PVE) refrigeration oil only. Do not use polyolyester (POE) or any other type of mineral oil as a thread lubricant.
MULTI F MULTI F MAX INSTALLATION 2XWGRRU 8QLW WR ,QGRRU 8QLW &RQQHFWLRQV Multi F with LGRED Outdoor Unit to Indoor Unit Piping Connections Avoid Pipe Damage Multi F Standard Wall-Mounted Indoor Unit • When routing field-provided piping, avoid damaging the outdoor unit from excessive vibration. • Properly insulate the liquid and gas lines separately up to the point of connection at the unit frame. • See table below for Multi F with LGRED outdoor unit connection types.
MULTI F MULTI F MAX INSTALLATION 2XWGRRU 8QLW WR ,QGRRU 8QLW &RQQHFWLRQV Installing Field Piping to the Outdoor Unit Piping Connections 1. Verify the outdoor unit service ports are closed. 2. Remove the caps on the outdoor unit piping connections. 3. Connect the gas piping first to ROOM A, then to ROOM B, then to ROOM C, in that order. Number of connections will differ depending on outdoor unit. 4.
MULTI F MULTI F MAX INSTALLATION 2XWGRRU 8QLW WR ,QGRRU 8QLW &RQQHFWLRQV Multi F MAX with LGRED Outdoor Unit System Piping Connections Avoid Pipe Damage • When routing field-provided piping, avoid damaging the outdoor unit from excessive vibration. • Properly insulate the liquid and gas lines separately up to the point of connection at the unit frame. • See table below for Multi F MAX outdoor unit connection types. Figure 41: Multi F MAX with LGRED Outdoor Unit Refrigerant Pipe Connections.
MULTI F MULTI F MAX INSTALLATION 2XWGRRU 8QLW WR ,QGRRU 8QLW &RQQHFWLRQV Table 14: Indoor Unit Pipe Sizes. Vapor Line Liquid Line Indoor Unit Capacity Piping Size (in., OD) Piping Size (in., OD) 7,000 Btu/h 9,000 Btu/h Ø3/8 12,000 Btu/h Ø1/4 15,000 Btu/h 18,000 Btu/h Ø1/2 24,000 Btu/h Table 15: Indoor Unit Piping Connections. Vapor Line Liquid Line Indoor Unit Capacity Conn. (in., OD) Conn. (in.
MULTI F MULTI F MAX INSTALLATION 2XWGRRU 8QLW WR ,QGRRU 8QLW &RQQHFWLRQV Figure 46: Socket Connection. Figure 47: Possible Outdoor Unit or Branch Distribution Unit to Indoor Unit Connections. Multi F Standard Wall-Mounted Indoor Unit 1. 3/8 in. to 3/8 in. Connection Flare side to indoor unit Ø3/8 in. Piping Flare nut Flare side to indoor unit Ø1/2 in. Piping Ø3/8 in. Flare nut Connection socket Ø3/8 in.
MULTI F MULTI F MAX INSTALLATION &RQGHQVDWH 'UDLQ +RVH ,QVWDOODWLRQ Indoor Unit Condensate Drain Hose Installation Refer to the diagrams below and follow proper installation and the position of the drain hose along the refrigerant piping installation path to avoid leaks. After the drain hose is set in place, always follow with leak / pressure testing and deep evacuation procedures of the refrigerant piping to be sure all refrigerant piping is properly installed. Re-check and retest as necessary.
MULTI F MULTI F MAX INSTALLATION &RQGHQVDWH 'UDLQ +RVH ,QVWDOODWLRQ Figure 52: Incorrect Slope Angles for the Drain Hose.
MULTI F MULTI F MAX INSTALLATION 3LSLQJ ,QVXODWLRQ Refrigerant Piping System Insulation All refrigerant piping from the outdoor unit to the indoor units / branch distribution units must be insulated correctly for safety and usage. Refrigerant piping, Y-branch connections, field-provided isolation ball valves (if present), service valves, and elbows must be properly and completely insulated using closed cell pipe insulation (up to the indoor unit piping connections).
MULTI F MULTI F MAX INSTALLATION 3LSLQJ ,QVXODWLRQ 3. Typical Unconditioned Location When piping passes through an indoor area where the indoor unit does not operate, such as a hallway, dormitory, or school, etc. An unconditioned space inside a building. 4. Special Unconditioned Location: If conditions 1 and 2 below are present. 1. An unconditioned space or plenum of a building. 2. An area where there is an elevated humidity level. Multi F Standard Wall-Mounted Indoor Unit 5.
MULTI F MULTI F MAX WIRING 6DIHW\ *XLGHOLQHV *HQHUDO ,QIRUPDWLRQ • Consider ambient conditions (temperature, direct sunlight, inclement weather, etc.) when selecting, installing, and connecting the power wiring. • Properly ground the outdoor unit, indoor units, and branch distribution units. Ground wiring must always be installed by a trained technician. Improperly grounded wire can cause communication problems from electrical noise, and motor current leakage.
MULTI F MULTI F MAX WIRING 3RZHU :LULQJ &RPPXQLFDWLRQ &DEOH &RQQHFWLRQV Best practice dictates using solderless ring or fork terminals at all power wiring and communication cable terminations. Use copper bearing ring or fork terminals; do not use galvanized or nickel plate over steel. Use appropriate crimping tool to attach the ring or fork terminals at all power wiring and control cable terminations. Multi F Standard Wall-Mounted Indoor Unit To Install a Ring or Fork Terminal: 1.
MULTI F MULTI F MAX WIRING 3RZHU 6XSSO\ 3RZHU :LULQJ 6SHFL¿FDWLRQV LG Terminal Connections Figure 60: JIS Screws. LG uses a “JIS” type of screw for all terminals; use a JIS screwdriver to tighten and loosen these screws and avoid damaging the terminal. Do not over tighten the connections — over tightening will damage the terminals — but firmly and securely attach the wiring in a way to prevent external forces from being imparted to the terminal block.
WIRING &RPPXQLFDWLRQ &RQQHFWLRQ &DEOH 6SHFL¿FDWLRQV MULTI F MULTI F MAX Multi F Standard Wall-Mounted Indoor Unit &RPPXQLFDWLRQ &RQQHFWLRQ 3RZHU &DEOH 6SHFLILFDWLRQV • Multi F with LGRED Systems: • Communication / connection (power) cable from the outdoor unit to the indoor unit for Figure 61: Typical Multi F / Multi F MAX with lengths up to 130 feet must use a minimum of 18 AWG, four (4) conductor, stranded, LGRED Outdoor and Indoor / Branch Distribution shielded or unshielded (if shielded, it mus
MULTI F MULTI F MAX WIRING &RPPXQLFDWLRQ &RQQHFWLRQ &DEOH 6SHFL¿FDWLRQV Figure 63: Typical Multi F with LGRED System General Power / Communications System Schematic When Wiring is Less Than 130 Feet. Indoor Units Figure 64: Typical Multi F MAX with LGRED System General Power / Communications System Schematic When Wiring is Less Than 130 Feet.
MULTI F MULTI F MAX WIRING &RQWUROOHU 2SWLRQV DQG &RQQHFWLRQ 6SHFL¿FDWLRQV Controller Options Communication Cables From Indoor Units to Remote Controllers • Communication cable from indoor unit to remote controller(s) is to be 22 AWG, 3-conductor, twisted, stranded, unshielded. Wiring must comply with all applicable local and national codes. • If using the LG Controller / Extension cable and the length needs to be further extended, the LG Extension Kit (sold separately) must be used.
MULTI F MULTI F MAX WIRING &RQWUROOHU 2SWLRQV DQG &RQQHFWLRQ 6SHFL¿FDWLRQV Communication Cables Between Multiple Indoor Units Operating as a Group (Group Control) If any indoor units were specified to operate in unison: • Before running cable, decide which indoor unit will be the “Master.” The other indoor units in that group will be designated as “Slave(s).” The zone controller will be connected to the “Master.” • Set the pertinent DIP switch at each indoor unit to identify the Master and Slave(s).
MULTI F MULTI F MAX WIRING ,QGRRU 8QLW (OHFWULFDO &RQQHFWLRQV &RQQHFWLQJ WKH 3RZHU :LULQJ &RPPXQLFDWLRQ &DEOH +97 ,QGRRU 8QLWV WARNING Multi F Standard Wall-Mounted Indoor Unit • Verify that main power to the unit is completely off before proceeding with these steps as there is a risk of electrical shock, bodily injury, and / or death. • Follow all safety and warning information outlined at the beginning and throughout this manual.
MULTI F MULTI F MAX WIRING ,QGRRU 8QLW (OHFWULFDO &RQQHFWLRQV 6. Route the power wiring / communications (connection) cable through the bottom of the indoor unit (through a knockout panel) to the terminal block. Figure 74: Indoor Unit Knockout. Figure 75: Indoor Unit Terminal Block with Ground Cable (Example Only). 7. Using a JIS screwdriver, connect the cable terminals to the terminal block. Ensure wire color and terminal number of the indoor unit matches those of the outdoor unit.
WIRING ,QGRRU 8QLW (OHFWULFDO &RQQHFWLRQV Multi F Standard Wall-Mounted Indoor Unit Figure 76: LMN079HVT, LMN159HVT, LMN249HVT Indoor Unit Wiring Diagram. 48 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
MULTI F MULTI F MAX WIRING ,QGRRU 8QLW (OHFWULFDO &RQQHFWLRQV Figure 77: Connecting the Power Wiring / Communication Cable to the HVT Indoor Unit Terminal Block - Front View. Figure 78: Connecting the Power Wiring / Communication Cable to the HVT Indoor Unit Terminal Block - Back View.
MULTI F MULTI F MAX WIRING ,QGRRU 8QLW (OHFWULFDO &RQQHFWLRQV &RQQHFWLQJ WKH 3RZHU :LULQJ &RPPXQLFDWLRQ &DEOH +69 ,QGRRU 8QLWV WARNING Multi F Standard Wall-Mounted Indoor Unit • Verify that main power to the unit is completely off before proceeding with these steps as there is a risk of electrical shock, bodily injury, and / or death. • Follow all safety and warning information outlined at the beginning and throughout this manual.
MULTI F MULTI F MAX WIRING ,QGRRU 8QLW (OHFWULFDO &RQQHFWLRQV Connecting Indoor Unit Electrical Wiring, continued. 7. Choice of the cable path out of the indoor unit and to the outdoor unit depends on refrigerant piping / drain hose installation: left side piping, following back of indoor unit; right side piping, through the knockout hole; or rear piping. Figure 86: Cable / Refrigerant Piping / Drain Hose Installation Options.
WIRING ,QGRRU 8QLW (OHFWULFDO &RQQHFWLRQV Multi F Standard Wall-Mounted Indoor Unit Figure 87: LSN090HSV5, LSN120HSV5, LSN180HSV5 Indoor Units Wiring Diagram. 52 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
MULTI F MULTI F MAX WIRING ,QGRRU 8QLW (OHFWULFDO &RQQHFWLRQV Figure 88: Indoor Unit to Outdoor Unit / Branch Distribution Unit Terminal Connections—LSN090HSV5, LSN120HSV5 and LSN180HSV5. Branch Distribution Unit Terminal Block or Outdoor Unit Terminal Block Indoor Unit Terminal Block BL BR GRN / YLW 1(L1 ) 2(L2) BDU: S N L 3 RD GND ODU: 3 or S GND Installation Manual Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.
MULTI F MULTI F MAX WIRING 2SWLRQDO :DOO 0RXQWHG 6HQVRU DQG &RQWUROOHU Wired Controller Installation Multi F Standard Wall-Mounted Indoor Unit Wall indoor units can be used with various wired controllers (optional; sold separately). Wired controllers include a sensor to detect room temperature. To maintain comfort levels in the conditioned space, the wired controller must be installed in a location away from direct sunlight, high humidity, and where it could be directly exposed to cold air.
MULTI F MULTI F MAX FINAL INSTALLATION PROCEDURES 5HDWWDFKLQJ WKH ,QGRRU 8QLW %RWWRP 3DQHO Reattaching the Indoor Unit Panels - HVT Reattach the indoor unit front and bottom panel after all other installation procedures are complete. 1. If ON, shut power OFF to the system. If it hasn’t already, reattach the control cover with its screw. 2. Reattach the bottom panel to the indoor unit, carefully aligning the panel using the rear tabs. Tap the panel gently to verify it engages at the bottom. 3.
MULTI F MULTI F MAX FINAL INSTALLATION PROCEDURES 5HDWWDFKLQJ WKH ,QGRRU 8QLW %RWWRP &RYHU Reattaching the Indoor Unit Bottom Cover - HSV5 Reattach the indoor unit bottom cover after all other installation procedures are complete. Figure 92: Close Up of Bottom Cover Connections (Appearances Will Vary Depending on Indoor Unit Model). Top Snaps 1. If ON, shut power OFF to the system. Multi F Standard Wall-Mounted Indoor Unit C-Hooks 2.
MULTI F MULTI F MAX FINAL INSTALLATION PROCEDURES $LU )LOWHU 'LVDVVHPEO\ DQG $VVHPEO\ Figure 97: Disassembling the Air Filter (Appearances Will Vary Depending on Indoor Unit Model). Air Filter Disassembly and Assembly - HSV5 Air Filter Disassembly 1. Turn power off to the system. 2. Lifting the Air Filter by the Handles. 2. Find the handles located at the top-front of the air filter molded into the plastic frame support. 3. Lift handles slightly up and out to remove the air filter. 3.
MULTI F MULTI F MAX FINAL INSTALLATION PROCEDURES ,QVWDOOLQJ %DWWHULHV Installing Batteries into the Handheld Remote Controller Multi F Standard Wall-Mounted Indoor Unit For information on using the handheld remote controller, refer to its owner’s manual. 1. The remote controller needs two AAA (1.5V) batteries for operation. Remove the battery cover from the back of the remote controller by pushing downward on the tab at the top of the battery cover, and then lift up to remove.
MULTI F MULTI F MAX TROUBLESHOOTING (UURU &RGHV Troubleshooting Using Error Codes Decoding the Error Display Refer to the table below for error codes that are generated from the indoor units (see the Multi F / Multi F MAX Outdoor Unit Installation Manual for outdoor unit error codes). These codes are the most common. Your particular system might generate additional codes not listed here. Please contact LG Support if you see these types of errors and a simple power cycle has not corrected the issue.
MULTI F MULTI F MAX TROUBLESHOOTING Error Codes Troubleshooting Using Error Codes - Continued Table 20: Multi F / Multi F MAX with LGRED Outdoor Unit Error Codes Description 21 22 23 25 26 27 28 29 31 32 40 41 44 45 46 48 53 60 61 62 63 65 67 DC Peak (IPM Fault); Compressor DC voltage was too high Current Transformer2 (CT2) error; Alternating current (AC) input too high DC Link Low Volt AC Low/High Volt DC Comp Position Error (not providing rotation), Locking PSC Fault; Current to inverter compressor be
MULTI F MULTI F MAX INSTALLATION CHECKLIST PAGE 1 of 2 System ID No.: _________________________________________________ Indoor Unit ID.: ____________________________________ Checked by: __________________________________ Date:__________________ Signature: ___________________________________ Major Component Rough-In Description Check The unit was connected properly per local code and the product installation procedures.
INSTALLATION CHECKLIST MULTI F MULTI F MAX PAGE 2 of 2 System ID No.: _________________________________________________ Indoor Unit ID.: ____________________________________ Checked by: __________________________________ Date:__________________ Signature: ___________________________________ Multi F Standard Wall-Mounted Indoor Unit Condensate Pump / Drain Installation Description Check Condensate piping installed correctly on indoor units. Material used is acceptable under local code.
)RU IXUWKHU WHFKQLFDO PDWHULDOV VXFK DV VXEPLWWDOV HQJLQHHULQJ PDQXDOV VHUYLFH PDQXDOV DQG FDWDORJV YLVLW ZZZ OJKYDF FRP Who to call for assistance Freight Damage and Unit Replacements Missing Parts Freight Damage and Unit Replacements Received Wrong Indoor Unit Model Installation, Startup, and Commissioning Technical Assistance Your LG Manufacturer Representative Your LG Manufacturer Representative Your LG Manufacturer Representative Your LG Manufacturer Representative 1-888-865-3026 For warrant
20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics, U.S.A., Inc. Air Conditioning Technologies 4300 North Point Parkway Alpharetta, Georgia 30022 www.lghvac.com LG Customer Information Center, Commercial Products 1-888-865-3026 USA Follow the prompts for commercial A/C products and parts.