MULTI F MULTI F MAX INDOOR UNIT ENGINEERING MANUAL Vertical-Horizontal Air Handling Units Art CoolTM Mirror Wall-Mounted Art CoolTM Gallery Wall-Mounted Four-Way Ceiling Cassette Ceiling-Concealed Duct Indoor Units for Multi-Zone Heat Pump Systems 7,000 to 36,000 Btu/h
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. EM_MultiF_IDU_3_18 For continual product development, LG reserves the right to change specifications without notice. ©LG Electronics Inc.
MULTI F MULTI F MAX TABLE OF CONTENTS Convergence of Technology, Innovation, Flexibility, & Style.....................................................4 Factory Supplied Parts and Materials / Installation ������������������������� 103 Installation and Best Layout Practices.............................................. 104 Unit Nomenclature........................................................................5 Four-Way Ceiling Cassette Indoor Units................................
CONVERGENCE OF TECHNOLOGY, INNOVATION, FLEXIBILITY, & STYLE Multi F and Multi F MAX Indoor Unit Engineering Manual About LG Electronics, Inc. LG Electronics is a global leader and technology innovator in consumer electronics, mobile communications, and home appliances. LG Electronics comprises five business units—Home Entertainment, Mobile Communications, Air Conditioning, Business Solutions, and Home Appliance.
MULTI F MULTI F MAX UNIT NOMENCLATURE Multi-Zone Systems — Indoor Units and Outdoor Units L M DN 12 6 HV BD 36 2 0 L = LG Type: M = 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 Air Handling Indoor Unit U: Outdoor Unit Nominal Capacity (Nominal cooling capacity in Btu/h): 15 =
MULTI F MULTI F MAX FUNCTIONS, CONTROLS AND OPTIONS OVERVIEW Table 1: Indoor Units—Functions, Controls and Options.
MULTI F MULTI F MAX FUNCTIONS, CONTROLS AND OPTIONS OVERVIEW Table 2: Indoor Unit Accessories Overview. Model No.
Multi F and Multi F MAX Indoor Unit Engineering Manual MULTI F MULTI F MAX 8 | INTRODUCTION 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.
ART COOL MIRROR INDOOR UNIT DATA ™ “Mechanical Specifications” on page 10 “General Data / Specifications” on page 11 “Dimensions” on page 12 “Cooling Capacity Table” on page 14 “Heating Capacity Table” on page 16 “Acoustic Data” on page 17 “Air Velocity and Temperature Distribution” on page 18 “Refrigerant Flow Diagram” on page 19 “Wiring Diagram” on page 20 “Factory Supplied Parts and Materials” on page 21 “Installation and Best Layout Practices” on page 22
MULTI F MULTI F MAX ART COOL MIRROR INDOOR UNITS Mechanical Specifications and Features ART COOL Mirror Wall-Mounted Indoor Units Figure 1: Multi F Art Cool Mirror Wall-Mounted Indoor Unit. General Multi F and Multi F MAX Indoor Unit Engineering Manual All LG indoor units are factory assembled, wired, piped, and provided with a control circuit board, fan, and motor. ART COOL Mirror Wall-Mounted indoor units have a sound rating no higher than 44 dB(A) as tested per KSA0701 ISO Standard 3745.
MULTI F MULTI F MAX ART COOL MIRROR INDOOR UNITS General Data / Specifications Table 3: Multi F Art Cool Mirror Indoor Unit General Data. Model Name Nominal Cooling Capacity (Btu/h) 1 Nominal Heating Capacity (Btu/h) 1 LAN090HSV5 LAN120HSV5 LAN180HSV5 9,000 12,000 18,000 10,900 13,600 21,600 Operating Range Cooling (°F WB) Heating (°F DB) 57-77 59-81 Fan Type Cross Flow Motor Output (W) x Qty. 30 x 1 Motor/Drive 60.
Refrigerant, Drain Pipe, and Cable Knock Out Hole 2 (51) Display & Remote Controller Signal Receiver Signal Bottom 2-3/8 (60) 3-5/8 (92) Left & Right 55° Refrigerant, Drain Pipe and Cable Knock Out Hole 5/16 (8) 3-21/32 (93) 5-19/32 (142) Ø2-9/16 (65) 3-27/32 (98) 5-31/32 (152) 12-1/16 (306) 32-15/16 (837) Installation Plate Unit Outline Unit Outline Connecting Gas/Liquid Pipe 32-15/16 (837) Fixing the Installation Plate, Drilling Hole 29/32 (23) 3-11/16 (94) Ø2-9/16 (65) 7-27/32 (199)
ART COOL MIRROR INDOOR UNITS Dimensions MULTI F MULTI F MAX Figure 3: LAN180HSV5 Dimensions. Rear Right Bottom Air Outlet 8-11/32 (212) Air Intake Refrigerant, Drain Pipe and Cable Knock Out Hole Drain Hose Connection Approx. 9-7/16 (240) to gas pipe Approx.
MULTI F MULTI F MAX ART COOL MIRROR INDOOR UNITS Cooling Capacity Table Table 4: Multi F Art Cool Mirror Indoor Units Cooling Capacity Table. Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) LAN090HSV5 9,000 LAN120HSV5 12,000 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 68 / 57 TC SHC 8.82 8.82 8.81 8.80 8.80 8.
MULTI F MULTI F MAX ART COOL MIRROR INDOOR UNITS Cooling Capacity Table Table 5: Multi F Art Cool Mirror Indoor Units Cooling Capacity Table (continued). Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) LAN180HSV5 18,000 17.65 17.63 17.62 17.60 17.59 17.58 17.56 17.55 17.54 17.52 17.51 17.50 17.08 16.66 16.24 15.82 15.37 14.99 14.62 14.24 13.87 13.65 13.57 12.33 12.43 12.52 12.62 12.71 12.81 12.90 13.00 13.10 13.19 13.29 13.38 13.16 12.93 12.70 12.46 12.33 12.00 11.67 11.
MULTI F MULTI F MAX ART COOL MIRROR INDOOR UNITS Heating Capacity Table Table 6: Multi F Art Cool Mirror Indoor Units Heating Capacity Table. Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Nominal Capacity of Indoor Unit (Btu/h) Outdoor Air Temp. °F DB °F WB 61 TC 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 -0.4 4.5 9 15 19 23 28 32 36 41 43 46 51 56 59 64 -0.4 4.
MULTI F MULTI F MAX ART COOL MIRROR INDOOR UNITS Acoustic Data Figure 4: Sound Pressure Level Measurement Location. 3.3 ft. • Measurement taken 2.6′ below the bottom of the unit and at a distance of 3.3′ from face of unit. • Measurements taken with no attenuation and units operating at full load normal operating condition. • Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed.
MULTI F MULTI F MAX ART COOL MIRROR INDOOR UNITS Air Velocity and Temperature Distribution Figure 6: LAN090HSV5 and LAN120HSV5 Air Velocity and Temperature Distribution Charts. Multi F and Multi F MAX Indoor Unit Engineering Manual Cooling Heating Figure 7: LAN180HSV5 Air Velocity and Temperature Distribution Charts. Cooling 18 | ART COOL MIRROR Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc.
MULTI F MULTI F MAX ART COOL MIRROR INDOOR UNITS Refrigerant Flow Diagram Figure 8: Art Cool Mirror Indoor Unit Refrigerant Flow Diagram. Th2 Vapor pipe connection port (flare connection) Heating Heat Th1 Exchanger Th4 Th5 Cooling M Cross Flow Fan Liquid pipe connection port (flare connection) Table 8: Art Cool Mirror Indoor Unit Refrigerant Pipe Sizes. Line Size Liquid Line Size Indoor Unit Capacity Vapor (in., OD) (in.
ART COOL MIRROR INDOOR UNITS Wiring Diagram Multi F and Multi F MAX Indoor Unit Engineering Manual Figure 9: Multi F Art Cool Mirror LAN090HSV5, LAN120HSV5, and LAN180HSV5 Indoor Units Wiring Diagram. 20 | ART COOL MIRROR 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 ART COOL MIRROR INDOOR UNITS Factory Supplied Parts and Materials Factory Supplied Parts Table 11: Parts Table.
MULTI F MULTI F MAX ART COOL MIRROR INDOOR UNITS Installation and Best Layout Practices DANGER Select a location for installing the wall-mounted indoor unit (IDU) that meets the following conditions: • Where there is enough structural strength to bear the weight of the unit • Where air circulation will not be blocked • Where noise prevention is taken into consideration • Ensure there is sufficient space from the ceiling and floor • Locate the indoor unit in a location where it can be easily connected to
MULTI F MULTI F MAX ART COOL MIRROR INDOOR UNITS Installation and Best Layout Practices Drilling Piping Hole in the Wall Figure 19:Drilling Piping Hole Hanging the Indoor Unit Chassis WALL Indoor Core Drill Bushing Sleeve Figure 13:Locking the Indoor Unit onto the Installation Plate. Art Cool Mirror™ 1. Attach the three (3) hooks on the top of the indoor unit to the top edge of the installation plate.
ART COOL MIRROR INDOOR UNITS Installation and Best Layout Practices MULTI F MULTI F MAX • • • • • • • Follow manufacturer’s circuit diagrams in the technical manuals. Confirm power source specifications. Confirm that the electrical capacity is sufficient. Starting current must be maintained ±10 percent of the rated current marked on the outdoor unit name plate. Confirm cable thickness specifications.
MULTI F MULTI F MAX ART COOL MIRROR INDOOR UNITS Installation and Best Layout Practices Wireless Handheld Controller Figure 23:AKB74955602 Wireless Controller. Table 12: AKB74955602 Wireless Controller Functions. Screen Display * Art Cool Mirror™ * * RESET Buttons 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 ART COOL MIRROR INDOOR UNITS Installation and Best Layout Practices Wired Controller Connections Indoor Unit Terminal Block To Outdoor Unit or Branch Distribution Unit (Multi F MAX Systems Only) To Wired Controller Wired Controller Placement 1(L1 ) 2(L2) To Outdoor Unit or Branch Distribution Unit (Multi F MAX Systems Only) Wired controllers include a sensor to detect room temperature.
MULTI F MULTI F MAX ART COOL MIRROR INDOOR UNITS Installation and Best Layout Practices Hanging the Wired Controller 1. The controller wiring/cable can be installed in one of three directions: top, back, or on the right side. If top or right side installation is desired, remove cable guide grooves on the controller, and then position wiring/cable on applicable side. Figure 27:Removing the Cable Guide Grooves. Top Top Back Right Side Right Side 2.
ART COOL GALLERY INDOOR UNIT DATA ™ “Mechanical Specifications” on page 29 “General Data / Specifications” on page 30 “Dimensions” on page 31 “Cooling Capacity Table” on page 32 “Heating Capacity Table” on page 33 “Acoustic Data” on page 34 “Air Velocity and Temperature Distribution” on page 35 “Refrigerant Flow Diagram” on page 36 “Wiring Diagram” on page 37 “Factory Supplied Parts and Materials” on page 38 “Installation and Best Layout Practices” on page 39
MULTI F MULTI F MAX ART COOL GALLERY INDOOR UNITS Mechanical Specifications and Features ART COOL Gallery Indoor Units General All LG indoor units are factory assembled, wired, piped, and provided with a control circuit board, fan, and motor. Art Cool Gallery indoor units have a sound rating no higher than 42 dB(A) as tested per KSA0701 ISO Standard 3745. Coil Indoor unit coils are comprised of a minimum of two rows of aluminum fins mechanically bonded to copper tubing.
MULTI F ART COOL GALLERY INDOOR UNITS MULTI F MAX General Data / Specifications Table 13: Multi F Art Cool Gallery Indoor Unit General Data. Model Name Nominal Cooling Capacity (Btu/h) 1 Nominal Heating Capacity (Btu/h) 1 LMAN097HVP LMAN127HVP 9,000 11,200 10,400 13,300 57-77 57-77 59-81 59-81 Multi F and Multi F MAX Indoor Unit Engineering Manual Operating Range Cooling (°F WB) Heating (°F DB) Fan Type Turbo Turbo Motor Output (W) x Qty.
MULTI F MULTI F MAX ART COOL GALLERY INDOOR UNITS Dimensions Figure 31: LMAN097HVP and LMAN127HVP Dimensions. Supply Air Vane Supply Air Supply Air Supply Air Vane Art Cool Gallery™ Supply Air Supply Air Vane Return Air Inlet Discharge Air Grille 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 ART COOL GALLERY INDOOR UNITS MAX MULTI FTable Cooling Capacity Table 14: Multi F Art Cool Gallery Indoor Units Cooling Capacity Table. Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) LMAN097HVP 9,000 LMAN127HVP 12,000 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 68 / 57 TC SHC 8.82 8.82 8.81 8.80 8.80 8.
MULTI F MULTI F MAX ART COOL GALLERY INDOOR UNITS Heating Capacity Table Table 15: Multi F Art Cool Gallery Indoor Units Heating Capacity Table. Model No. / Nominal Capacity of Indoor Unit (Btu/h) LMAN097HVP 9,000 64 TC Indoor Air Temp. °F DB 68 70 TC TC °F DB °F WB 61 TC 72 TC 75 TC 0 -0.4 5.35 5.28 5.23 5 4.5 6.03 5.95 5.90 5.20 5.12 4.90 5.88 5.80 10 9 6.71 6.63 5.58 6.58 6.56 6.48 17 15 7.61 6.26 7.54 7.49 7.46 7.39 20 19 7.14 7.95 7.88 7.83 7.80 7.
MULTI F ART COOL GALLERY INDOOR UNITS MAX MULTI F Data Acoustic • Measurement taken 2.6′ below the bottom of the unit and at a distance of 3.3′ from face of unit. • Measurements taken with no attenuation and units operating at full load normal operating condition. • Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed. • Sound power levels are measured in dB(A)±3.
MULTI F MULTI F MAX ART COOL GALLERY INDOOR UNITS Air Velocity and Temperature Distribution Figure 34: LMAN097HVP Air Velocity and Temperature Distribution Charts. Cooling Discharge angle: 40° Discharge angle: 50° Heating Air velocity [ft/s] Air velocity [ft/s] 9f t 9f t 7f t 7f t 6.6 6.6 16ft 13ft 10ft 4.9 3.3 1.6 7 ft 3f t 3f t 4.6 3f t 0f t 0f t 3.3 1.
MULTI F ART COOL GALLERY INDOOR UNITS MULTIDiagram F MAX Refrigerant Flow Figure 36: Art Cool Gallery Indoor Unit Refrigerant Flow Diagram.
MULTI F MULTI F MAX ART COOL GALLERY INDOOR UNITS Wiring Diagram Figure 37: Multi F Art Cool Gallery Indoor Units Wiring Diagram. Art Cool Gallery™ 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 ART COOL GALLERY INDOOR UNITS MULTIMaterials F MAX Factory Supplied Parts and Factory Supplied Parts Multi F and Multi F MAX Indoor Unit Engineering Manual Table 19: Parts Table.
MULTI F MULTI F MAX ART COOL GALLERY INDOOR UNITS Installation and Best Layout Practices Selecting the Best Location Figure 38:Minimum Clearance Requirements. Do’s • • • • • • Place the unit where air circulation will not be blocked. Place the unit where drainage can be obtained easily. Place the unit where noise prevention is taken into consideration. Ensure there is sufficient space from the ceiling and floor. Ensure there is sufficient maintenance space.
MULTI F ART COOL GALLERY INDOOR UNITS MULTI F MAX Installation and Best Layout Practices Preparing the Indoor Unit for Installation Removing the Front Panel Figure 40:Preparing for Installation. 1A 1B 2A 2B 1. First pull the top of the front panel up (1A) and then out (1B). Multi F and Multi F MAX Indoor Unit Engineering Manual 2. Remove the two (2) screws at the bottom (2A), then lift off the front panel (2B). 3.
MULTI F MULTI F MAX ART COOL GALLERY INDOOR UNITS Installation and Best Layout Practices Preparing the Refrigerant and Drain Piping Connections Figure 43:Preparing the Refrigerant / Drain Connections. 1. Depending on the installation requirements, route the indoor unit refrigerant piping and the drain hose to the left, right (see guidelines below), or rear of the frame. 1 2. Bundle the piping and drain hose with tape where they meet near the indoor unit frame.
MULTI F ART COOL GALLERY INDOOR UNITS MULTI F MAX Installation and Best Layout Practices Connecting the Indoor Unit Piping to the Field-Installed Piping 1. Center align the indoor unit piping (refrigerant and drain) and the field-installed piping, then hand tighten the flare nut. 2. Tighten the flare nut with a torque wrench. 3. Attach the drain tube piping to the indoor unit drain hose as shown below. Figure 46:Indoor Unit to Field-Installed Piping Connection.
MULTI F MULTI F MAX ART COOL GALLERY INDOOR UNITS Installation and Best Layout Practices Power Wiring / Communications Cable Guidelines • • • • • • • Follow manufacturer’s circuit diagrams in the technical manuals. Confirm power source specifications. Confirm that the electrical capacity is sufficient. Starting current must be maintained ±10 percent of the rated current marked on the outdoor unit name plate. Confirm cable thickness specifications.
MULTI F ART COOL GALLERY INDOOR UNITS MULTI F MAX Installation and Best Layout Practices Controller Options Art Cool Gallery wall-mounted indoor units include a handheld controller (AKB73635607), but optional LG-supplied wired controllers are available. Multi F and Multi F MAX Indoor Unit Engineering Manual Wireless Handheld Controller Figure 53:AKB73635607 Wireless Controller. Table 20: AKB73635607 Wireless Controller Functions.
MULTI F MULTI F MAX ART COOL GALLERY INDOOR UNITS Installation and Best Layout Practices Wired Controller Connections Figure 54:Wired Controller Connection on the Indoor Unit Terminal Block. Indoor Unit Terminal Block CN-REMO 3 RD BL 1(L1 ) 2(L2) BR GRN / YLW GND To Outdoor Unit or Branch Distribution Unit (Multi F MAX Systems Only) Wired Controller Placement Figure 55:Proper Location for the Wired Controller. To Wired Controller Wired controllers include a sensor to detect room temperature.
MULTI F ART COOL GALLERY INDOOR UNITS MULTI F MAX Installation and Best Layout Practices Assigning the Thermistor for Temperature Detection Multi F and Multi F MAX Indoor Unit Engineering Manual Each indoor unit includes a return air thermistor assigned to sense the temperature. If a wired controller is installed, there is a choice of sensing temperature with either the indoor unit return air thermistor or the thermistor in the wired controller.
MULTI F MULTI F MAX Art Cool Gallery™ 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.
STANDARD WALL-MOUNTED INDOOR UNIT DATA “Mechanical Specifications” on page 49 “General Data / Specifications” on page 50 “Dimensions” on page 51 “Cooling Capacity Table” on page 53 “Heating Capacity Table” on page 56 “Acoustic Data” on page 58 “Air Velocity and Temperature Distribution” on page 60 “Refrigerant Flow Diagram” on page 62 “Wiring Diagram” on page 63 “Factory Supplied Parts and Materials” on page 65 “Installation and Best Layout Practices” on page 66
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS Mechanical Specifications and Features Standard Wall-Mounted Indoor Units Figure 60: Multi F Standard Wall-Mounted Indoor Unit. General All LG indoor units are factory assembled, wired, piped, and provided with a control circuit board, fan, and motor. Standard WallMounted units have a sound rating no higher than 46 dB(A) as tested per KSA0701 ISO Standard 3745.
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS General Data / Specifications Table 21: Multi F Standard Wall-Mounted Indoor Unit General Data.
STANDARD WALL-MOUNTED INDOOR UNITS Dimensions MULTI F MULTI F MAX Figure 61: LMN079HVT, LSN090HSV5, LSN120HSV5, and LMN159HVT Dimensions. 1-7/16 (33.5) Display & Remote Controller Signal Receiver Bottom Rear Right 2 (51) 7-7/16 (189) Air Intake Air Outlet Refrigerant, Drain Pipe and Cable Routing Knock Out Hole 5/16 (8) Terminal Block for Power Supply and Communication Approx. 11-11/32 (288) to gas pipe 12-1/8 (308) Refrigerant, Drain Approx.
Air Outlet 8-9/32 (210) Air Intake 7/16 (11) 2-3/8 (60) Refrigerant, Drain Pipe and Cable Routing Knock Out Hole Approx. 9-7/16 (240) to gas pipe Approx.
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS Cooling Capacity Table Table 22: Multi F Standard Wall-Mounted Indoor Units Cooling Capacity Table. Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) LMN079HVT 7,000 73 / 61 TC SHC Indoor Air Temp. °F DB / °F WB 77 / 64 80 / 67 TC SHC TC SHC 6.86 6.86 6.85 6.85 6.84 6.84 6.83 6.83 6.82 6.81 6.81 6.80 6.64 6.48 6.31 6.15 5.98 5.83 5.69 5.54 5.39 5.31 5.28 8.82 8.82 8.81 8.80 8.80 8.79 8.78 8.78 8.77 8.76 8.76 8.75 8.
STANDARD WALL-MOUNTED INDOOR UNITS MULTI F MULTI F MAX Cooling Capacity Table Table 23: Multi F Standard Wall-Mounted Indoor Units Cooling Capacity Table (continued). Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) LSN120HSV5 12,000 LMN159HVT 14,300 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 68 / 57 TC SHC 11.
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS Cooling Capacity Table Table 24: Multi F Standard Wall-Mounted Indoor Units Cooling Capacity Table (continued). Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) LSN180HSV5 18,000 17.65 17.63 17.62 17.60 17.59 17.58 17.56 17.55 17.54 17.52 17.51 17.50 17.08 16.66 16.24 15.82 15.37 14.99 14.62 14.24 13.87 13.65 13.57 23.53 23.51 23.49 23.47 23.46 23.44 23.42 23.40 23.38 23.37 23.35 23.33 22.77 22.21 21.65 21.09 20.49 19.
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS Heating Capacity Table Table 25: Multi F Standard Wall-Mounted Indoor Units Heating Capacity Table. Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Nominal Capacity of Indoor Unit (Btu/h) LMN079HVT 8,100 LSN090HSV5 10,900 LSN120HSV5 13,600 Outdoor Air Temp. °F DB °F WB 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 -0.4 4.
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS Heating Capacity Table Table 26: Multi F Standard Wall-Mounted Indoor Units Heating Capacity Table. Model No. / Nominal Capacity of Indoor Unit (Btu/h) LMN159HVT 15,600 LMN249HVT 25,600 °F DB °F WB 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 -0.4 4.5 9 15 19 23 28 32 36 41 43 46 51 56 59 64 -0.4 4.5 9 15 19 23 28 32 36 41 43 46 51 56 59 64 -0.4 4.
STANDARD WALL-MOUNTED INDOOR UNITS Acoustic Data Multi F and Multi F MAX Indoor Unit Engineering Manual Figure 63: Sound Pressure Level Measurement Location. MULTI F MULTI F MAX • Measurement taken 2.6′ below the bottom of the unit and at a distance of 3.3′ from face of unit. • Measurements taken with no attenuation and units operating at full load normal operating condition.
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS Acoustic Data Figure 65:LMN159HVT, LSN180HSV5, and LMN249HVT Sound Pressure Level Diagrams. LMN159HVT LSN180HSV5 LMN249HVT Standard Wall-Mounted 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. STD.
STANDARD WALL-MOUNTED INDOOR UNITS Air Velocity and Temperature Distribution Multi F and Multi F MAX Indoor Unit Engineering Manual Figure 66:LMN079HVT, LSN090HSV5, LSN120HSV5, LMN159HVT Air Velocity and Temperature Distribution Charts. Figure 67:LSN180HSV5 Air Velocity and Temperature Distribution Charts. 60 | STD. WALL-MOUNTED Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ.
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS Air Velocity and Temperature Distribution Figure 68:LMN249HVT Air Velocity and Temperature Distribution Charts. Standard Wall-Mounted 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. STD.
STANDARD WALL-MOUNTED INDOOR UNITS Refrigerant Flow Diagram MULTI F MULTI F MAX Figure 69:Multi F Standard Wall-Mounted Indoor Unit Refrigerant Flow Diagram. Gas pipe connection port (flare connection) Cooling Heating M Liquid pipe connection port (flare connection) Table 28: Multi F Standard Wall-Mounted Indoor Unit Refrigerant Pipe Sizes. Model No. Vapor (inch) Table 29: Multi F Standard Wall-Mounted Indoor Unit Refrigerant Pipe Connections.
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS Wiring Diagram Figure 70:Multi F Standard Wall-Mounted LSN090HSV5, LSN120HSV5, LSN180HSV5 Indoor Units Wiring Diagram. Standard Wall-Mounted 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. STD.
STANDARD WALL-MOUNTED INDOOR UNITS Wiring Diagram Multi F and Multi F MAX Indoor Unit Engineering Manual Figure 71: Multi F Standard Wall-Mounted LMN079HVT, LMN159HVT, LMN249HVT Indoor Unit Wiring Diagram. 64 | STD. WALL-MOUNTED 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 STANDARD WALL-MOUNTED INDOOR UNITS Factory Supplied Parts and Materials Factory Supplied Parts Table 32: Parts Table.
STANDARD WALL-MOUNTED INDOOR UNITS Installation and Best Layout Practices Selecting the Best Location MULTI F MULTI F MAX Figure 72:Minimum Clearance Requirements. • • • • • • >4 inches Place the unit where air circulation will not be blocked. Place the unit where drainage can be obtained easily. Place the unit where noise prevention is taken into consideration. Ensure there is sufficient space from the ceiling and floor. Ensure there is sufficient maintenance space.
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS Installation and Best Layout Practices Preparing for Installation Prepare the refrigerant piping and drain hose (indoor unit piping) for installation through the wall: press on the top of the tubing clamp and slowly guide the piping / hose down (depending on installation requirements, then to the left or right). Relock the tubing clamp after the piping / hose are released. Figure 76:Preparing for Installation.
STANDARD WALL-MOUNTED INDOOR UNITS Installation and Best Layout Practices MULTI F MULTI F MAX • • • • • • • Follow manufacturer’s circuit diagrams in the technical manuals. Confirm power source specifications. Confirm that the electrical capacity is sufficient. Starting current must be maintained ±10 percent of the rated current marked on the outdoor unit name plate. Confirm cable thickness specifications.
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS Installation and Best Layout Practices Controller Options Standard wall-mounted indoor units include a wireless controller (AKB74955602), but optional LG-supplied wired controllers are available. Wireless Controller Figure 86:AKB74955602 Wireless Controller. Table 33: AKB74955602 Wireless Controller Functions.
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS Installation and Best Layout Practices Wired Controller Connections Indoor Unit Terminal Block To Outdoor Unit or Branch Distribution Unit (Multi F MAX Systems Only) To Wired Controller 1(L1 ) 2(L2) To Outdoor Unit or Branch Distribution Unit (Multi F MAX Systems Only) Wired Controller Placement Wired controllers include a sensor to detect room temperature.
MULTI F MULTI F MAX STANDARD WALL-MOUNTED INDOOR UNITS Installation and Best Layout Practices Hanging the Wired Controller 1. The controller wiring / cable can be installed in one of three directions: top, back, or on the right side. If top or right side installation is desired, remove cable guide grooves on the controller, and then position wiring / cable on applicable side. Figure 91:Removing the Cable Guide Grooves. Top Top Back Right Side Right Side 2. Choose and mark the area of installation.
CEILING-CONCEALED DUCT (LOW STATIC) INDOOR UNIT DATA “Mechanical Specifications” on page 73 “General Data / Specifications” on page 74 “Dimensions” on page 75 “Cooling Capacity Table” on page 76 “Heating Capacity Table” on page 78 “External Static Pressure” on page 79 “Acoustic Data” on page 80 “Refrigerant Flow Diagram” on page 81 “Wiring Diagram” on page 83 “Factory Supplied Parts and Materials” on page 84 “Installation and Best Layout Practices” on page 85
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Mechanical Specifications and Features Ceiling-Concealed Duct (Low Static) Indoor Unit Figure 95: Ceiling-Concealed Duct (Low Static) Indoor Unit. General All LG indoor units are factory assembled, wired, piped, and provided with a control circuit board, fan, and motor. Ceiling-Concealed Duct (Low Static) units have a sound rating no higher than 36 dB(A) as tested per KSA0701 ISO Standard 3745, and are designed for low-static pressure up to 0.20″WG.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS General Data / Specifications Table 34: Multi F Ceiling-Concealed Low-Static Ducted Indoor Unit General Data. Model Name Nominal Cooling Capacity (Btu/h) 1 Nominal Heating Capacity (Btu/h) 1 LDN097HV4 LDN127HV4 LMDN186HV 9,000 12,000 18,000 10,400 13,800 20,800 Multi F and Multi F MAX Indoor Unit Engineering Manual Operating Range Cooling (°F WB) Heating (°F DB) 57-77 59-81 Fan Type Sirocco Motor Output (W) x Qty.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Dimensions Figure 96:LDN097HV4, LDN127HV4, and LMDN186HV Dimensions. Ceiling-Concealed Duct (Low Static) 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 DUCT (LOW STATIC) INDOOR UNITS Cooling Capacity Table Table 35: Multi F Ceiling-Concealed Duct (Low Static) Indoor Units Cooling Capacity Table. Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) LDN097HV4 9,000 LDN127HV4 12,000 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 68 / 57 TC SHC 8.82 8.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Cooling Capacity Table Table 36: Multi F Ceiling-Concealed Duct (Low Static) Indoor Units Cooling Capacity Table (continued). Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) 17.65 17.63 17.62 17.60 17.59 17.58 17.56 17.55 17.54 17.52 17.51 17.50 17.08 16.66 16.24 15.82 15.37 14.99 14.62 14.24 13.87 13.65 13.57 13.09 13.20 13.30 13.40 13.50 13.60 13.71 13.81 13.91 14.01 14.11 14.21 13.98 13.74 13.49 13.23 13.09 12.74 12.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Heating Capacity Table Table 37: Multi F Ceiling-Concealed Duct (Low Static) Indoor Units Heating Capacity Table. Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Nominal Capacity of Indoor Unit (Btu/h) Outdoor Air Temp. °F DB °F WB 61 TC 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 0 5 10 17 20 25 30 35 40 45 47 50 55 60 63 68 -0.4 4.5 9 15 19 23 28 32 36 41 43 46 51 56 59 64 -0.4 4.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS External Static Pressure Table 38: Multi F Ceiling-Concealed Duct (Low Static) External Static Pressure Setting Values Table. Static Pressure (in. wg) Model No. / Nominal Capacity of Indoor Unit (Btu/h) LDN097HV4 9,000 LMDN186HV 18,000 0.04 0.08 Airflow Rate / CFM 0.12 0.16 0.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Acoustic Data • Measurements taken with no attenuation and units operating at full load normal operating condition. • Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed. • Sound power levels are measured in dB(A)±3. • Tested in anechoic chamber per ISO Standard 3745. 4.9 ft. Ceiling 6.6 ft. Table 39:Sound Pressure Levels (dB[A]). Model No.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Refrigerant Flow Diagrams Figure 99: LDN097HV4 Refrigerant Flow Diagram. : Cooling : Heating Evaporator Outlet Temperature Thermistor Sirocco Fan M Ceiling-Concealed Duct (Low Static) Evaporator Inlet Temperature Thermistor Indoor Unit Indoor Air Temperature Thermistor Table 40: Multi F Ceiling-Concealed Duct (Low Static) LDN097HV4 Indoor Unit Refrigerant Pipe Connection Port Diameters. Model No.
DUCT (LOW STATIC) INDOOR UNITS Refrigerant Flow Diagrams MULTI F MULTI F MAX Figure 100:LDN127HV4 and LMDN186HV Refrigerant Flow Diagram. Multi F and Multi F MAX Indoor Unit Engineering Manual : Cooling : Heating Evaporator Outlet Temperature Thermistor Evaporator Inlet Temperature Thermistor Sirocco Fan M M Indoor Unit Indoor Air Temperature Thermistor Table 42: Multi F Ceiling-Concealed Duct (Low Static) LDN127HV4 and LMDN186HV Indoor Unit Refrigerant Pipe Connection Port Diameters. Model No.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Wiring Diagram Figure 101:Multi F Ceiling-Concealed Duct (Low Static) LDN097HV4, LDN127HV4, and LMDN186HV Indoor Units Wiring Diagram. Ceiling-Concealed Duct (Low Static) 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 DUCT (LOW STATIC) INDOOR UNITS Factory Supplied Parts and Materials Factory Supplied Parts Multi F and Multi F MAX Indoor Unit Engineering Manual Table 44: Parts Table.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Installation and Best Layout Practices Selecting the Best Location Do’s • • • • • • Place the unit where air circulation will not be blocked. Place the unit where drainage can be obtained easily. Place the unit where noise prevention is taken into consideration. Ensure there is sufficient strength to bear the load of the indoor unit. Ensure there is sufficient maintenance space.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Installation and Best Layout Practices Duct (Low Static) Indoor Units can be installed in two ways: Table 47:Indoor Unit Bolt Locations. E Figure 104:Air inlet from the back of the indoor Figure 105:Air inlet from the bottom of the indoor unit. unit.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Installation and Best Layout Practices Installing the Drain System Figure 109:Drain Connection. • Drain piping must have downward gradient of at least 1/50 to 1/100; to prevent reverse flow, slope should not be straight up and down. • Do not damage the drain port on the indoor unit when connecting the field-supplied drain piping. • Drain piping specifications: - Indoor Unit Drain Connection: 1-1/4 inch outside diameter.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Installation and Best Layout Practices Insulating the Refrigerant and Drain Piping Figure 114:Insulating the Piping. Ensure all piping is insulated. Exposed piping can cause burns if touched.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Installation and Best Layout Practices Power Wiring / Communications Cable Guidelines • • • • • • • Follow manufacturer’s circuit diagrams in the technical manuals. Confirm power source specifications. Confirm that the electrical capacity is sufficient. Starting current must be maintained ±10 percent of the rated current marked on the outdoor unit name plate. Confirm cable thickness specifications.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Installation and Best Layout Practices Controller Options Wired Controller Figure 117:AKB729558161 Wired Controller. • Operation Display Panel: Displays operation conditions. Operation Display Panel • Temperature Control Button: Sets desired temperature. Temperature Control Button Fan Speed Button • Fan Speed Button: Sets desired fan speed.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Installation and Best Layout Practices Figure 120:Removing the Cable Guide Grooves. Hanging the Wired Controller 1. The controller wiring / cable can be installed in one of three directions: top, back, or on the right side. If top or right side installation is desired, remove cable guide grooves on the controller, and then position wiring / cable on applicable side. Top Top Back Right Side Right Side 2.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Installation and Best Layout Practices External Static Pressure Control Multi F and Multi F MAX Indoor Unit Engineering Manual To provide a required air flow rate that accounts for the external static pressure change, follow the steps below. Figure 125:Controller External Static Pressure Setting Display. 1.
MULTI F MULTI F MAX DUCT (LOW STATIC) INDOOR UNITS Installation and Best Layout Practices Assigning Air Flow To assign an air flow for each fan speed, follow the steps below. 1. To access system installer setting mode, press and hold the temperature increase and mode selection buttons simultaneously for approximately three (3) seconds. Choose setting code value “03” by pressing the mode selection button. Figure 126:Controller External Static Pressure Setting Display. 2.
CEILING-CONCEALED DUCT (HIGH STATIC) INDOOR UNIT DATA “Mechanical Specifications” on page 95 “General Data / Specifications” on page 96 “Dimensions” on page 97 “Cooling Capacity Table” on page 98 “Heating Capacity Table” on page 99 “External Static Pressure” on page 100 “Acoustic Data” on page 100 “Refrigerant Flow Diagrams” on page 101 “Wiring Diagram” on page 102 “Factory Supplied Parts and Materials” on page 103 “Installation and Best Layout Practices” on page 104
MULTI F MULTI F MAX DUCT (HIGH STATIC) INDOOR UNITS Mechanical Specifications and Features Ceiling-Concealed Duct (High Static) Indoor Unit Figure 127: Ceiling-Concealed Duct (High Static) Indoor Unit. General All LG indoor units are factory assembled, wired, piped, and provided with a control circuit board, fan, and motor. Ceiling-Concealed Duct (High Static) units are designed for high-speed air volume against an external static pressure up to 0.78″WG for the 24,000 Btu/h model; up to 0.
DUCT (HIGH STATIC) INDOOR UNITS General Data / Specifications MULTI F MULTI F MAX Table 49: Multi F Ceiling-Concealed High-Static Ducted Indoor Unit General Data. Model Name LMHN240HV LMHN360HV 24,000 36,000 27,000 40,000 57-77 57-77 59-81 59-81 Type Sirocco Sirocco Motor Output (W) x Qty. Motor/Drive Factory Set Airflow Rate CFM (H/M/L) Factory Set External Static Pressure (in. wg) Maximum External Static Pressure (in.
MULTI F MULTI F MAX DUCT (HIGH STATIC) INDOOR UNITS Dimensions Figure 128: LMHN240HV and LMHN360HV Dimensions. Ceiling-Concealed Duct (High Static) 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 DUCT (HIGH STATIC) INDOOR UNITS Cooling Capacity Table Table 50:Multi F Ceiling-Concealed Duct (High Static) Indoor Units Cooling Capacity Table. Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) LMHN240HV 24,000 LMHN360HV 36,000 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 68 / 57 TC SHC 23.
MULTI F MULTI F MAX DUCT (HIGH STATIC) INDOOR UNITS Heating Capacity Table Table 51:Multi F Ceiling-Concealed Duct (High Static) Indoor Units Heating Capacity Table. Model No. / Nominal Capacity of Indoor Unit (Btu/h) LMHN360HV 36,000 61 64 Indoor Air Temp. °F DB 68 70 72 75 °F DB °F WB TC TC TC TC TC TC 0 -0.4 13.89 13.70 13.57 13.50 13.30 12.72 5 4.5 15.65 15.46 15.33 15.26 15.07 14.48 10 9 17.41 17.22 17.09 17.02 16.83 16.24 17 15 19.76 19.57 19.43 19.37 19.
MULTI F MULTI F MAX DUCT (HIGH STATIC) INDOOR UNITS External Static Pressure / Acoustic Data Table 52:Multi F Ceiling-Concealed Duct (High Static) External Static Pressure Setting Values Table. Static Pressure (in. wg) 0.1 0.16 0.23 0.31 Model No. / Nominal Capacity Airflow Rate / CFM of Indoor Unit (Btu/h) High Mid Low High Mid Low LMHN360HV 36,000 688 618 530 1,130 953 706 0.47 0.55 0.62 0.70 0.78 140 137 134 160 152 141 147 144 141 - 154 151 148 - 160 157 154 - Setting Value (in.
MULTI F MULTI F MAX DUCT (HIGH STATIC) INDOOR UNITS Refrigerant Flow Diagrams Figure 131: LMHN240HV and LMHN360HV Refrigerant Flow Diagram.
DUCT (HIGH STATIC) INDOOR UNITS Wiring Diagrams Multi F and Multi F MAX Indoor Unit Engineering Manual Figure 132: Multi F Ceiling-Concealed Duct (High Static) LMHN240HV Indoor Units Wiring Diagram. Figure 133: Multi F Ceiling-Concealed Duct (High Static) LMHN360HV Indoor Units Wiring Diagram. ROOM PIPE IN THERMISTOR THERMISTOR 102 | DUCT (HIGH STATIC) PIPE OUT THERMISTOR Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A.
MULTI F MULTI F MAX DUCT (HIGH STATIC) INDOOR UNITS Factory Supplied Parts and Materials / Installation Factory Supplied Parts Table 56: Parts Table.
MULTI F MULTI F MAX DUCT (HIGH STATIC) INDOOR UNITS Installation and Best Layout Practices If the unit is installed near a body of water, certain components are at risk of being corroded. Appropriate anti-corrosion methods should be taken for the unit and all components. In some installation applications, areas (floors, walls) in some rooms may be exposed to unconditioned air (room may be above or next to an unheated garage or storeroom).
MULTI F MULTI F MAX DUCT (HIGH STATIC) INDOOR UNITS Installation and Best Layout Practices Preparing the Installation Area and Hanging the Indoor Unit Frame 1. Select and mark the area for the suspension or console bolts (use embedded inserts or anchor bolts in new buildings, and hole-inanchors in older buildings). 2. Drill the holes. 3. Add the set-anchor and the plate washer to the bolts (bolts should be at least 13/32 inches in diameter), and then insert the bolts into the installation area.
MULTI F MULTI F MAX DUCT (HIGH STATIC) INDOOR UNITS Installation and Best Layout Practices Multi F and Multi F MAX Indoor Unit Engineering Manual Checking the Drain Pump Figure 141:Checking the drain pump. The unit uses a drain pump to remove condensate. The pump must be tested before the system operates. • Connect (field supplied) flexible drain hose to the field-installed drain piping; leave it as is until the test is complete. • Pour water into the flexible drain hose and check for leaks.
MULTI F MULTI F MAX DUCT (HIGH STATIC) INDOOR UNITS Installation and Best Layout Practices Power Wiring / Communications Cable Guidelines • • • • • • • Follow manufacturer’s circuit diagrams in the technical manuals. Confirm power source specifications. Confirm that the electrical capacity is sufficient. Starting current must be maintained ±10 percent of the rated current marked on the outdoor unit name plate. Confirm cable thickness specifications.
MULTI F A MAX MULTI F Terminal Block Control Box DUCT (HIGH STATIC) INDOOR UNITS Installation and Best Layout Practices Using a Conduit 1. Remove the rubber stopper on the indoor unit. Pass the power wiring / communications cable through the conduit, the conduit mounting plate, and to / through the control panel of the indoor unit. 2. Connect the power wiring / communications cable to the indoor unit terminal block. 3. Screw the conduit mounting plate to the indoor unit. 4.
MULTI F MULTI F MAX DUCT (HIGH STATIC) INDOOR UNITS Installation and Best Layout Practices Wired Controller Placement 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 DUCT (HIGH STATIC) INDOOR UNITS Installation and Best Layout Practices External Static Pressure Control To provide a required air flow rate that accounts for the external static pressure change, follow the steps below. Figure 155:Controller External Static Pressure Setting Display. Multi F and Multi F MAX Indoor Unit Engineering Manual 1.
MULTI F MULTI F MAX DUCT (HIGH STATIC) INDOOR UNITS Installation and Best Layout Practices Assigning Air Flow To assign an air flow for each fan speed, follow the steps below. 1. To access system installer setting mode, press and hold the temperature increase and mode selection buttons simultaneously for approximately three (3) seconds. Choose setting code value “03” by pressing the mode selection button. Figure 156:Controller External Static Pressure Setting Display. 2.
FOUR-WAY CEILING-CASSETTE INDOOR UNIT DATA “Mechanical Specifications” on page 113 “General Data / Specifications” on page 114 “Dimensions” on page 115 “Cooling Capacity Table” on page 117 “Heating Capacity Table” on page 120 “Acoustic Data” on page 121 “Air Velocity and Temperature Distribution” on page 123 “Refrigerant Flow Diagram” on page 125 “Wiring Diagram” on page 126 “Factory Supplied Parts and Materials” on page 127 “Installation and Best Layout Practices” on page 128
MULTI F FOUR-WAY CEILING CASSETTE INDOOR UNITS MULTI F MAX Mechanical Specifications and Features Four-Way Ceiling-Cassette Indoor Units General All LG indoor units are factory assembled, wired, piped, and provided with a control circuit board, fan, and motor. Four-way ceilingcassette units have a sound rating no higher than 38 dB(A) as tested per KSA0701 ISO Standard 3745. Coil Indoor unit coils are factory built and are comprised of aluminum fins mechanically bonded to copper tubing.
FOUR-WAY CEILING-CASSETTE INDOOR UNITSMULTI F MULTI F MAX General Data / Specifications Table 65:Multi F Four-Way Ceiling-Cassette Indoor Unit General Data.
MULTI F FOUR-WAY CEILING CASSETTE INDOOR UNITS MULTI F MAX Dimensions Figure 158:LMCN077HV, LCN097HV4, and LCN127HV4 Dimensions. Four-Way Ceiling-Cassette 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.
FOUR-WAY CEILING-CASSETTE INDOOR UNITSMULTI F MULTI F MAX Dimensions Supply Air Vane Multi F and Multi F MAX Indoor Unit Engineering Manual Figure 159: LMCN185HV Dimensions. Supply Air Vane | CEILING-CASSET TE Supply Air Vane Return Air Grille 116 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 FOUR-WAY CEILING CASSETTE INDOOR UNITS MULTI F MAX Cooling Capacity Table Table 66:Multi F Four-Way Ceiling-Cassette Indoor Units Cooling Capacity Table. Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) LMCN077HV 7,000 73 / 61 TC SHC Indoor Air Temp. °F DB / °F WB 77 / 64 80 / 67 TC SHC TC SHC 6.86 6.86 6.85 6.85 6.84 6.84 6.83 6.83 6.82 6.81 6.81 6.80 6.64 6.48 6.31 6.15 5.98 5.83 5.69 5.54 5.39 5.31 5.28 8.82 8.82 8.81 8.80 8.80 8.79 8.78 8.78 8.77 8.76 8.76 8.
FOUR-WAY CEILING CASSETTE INDOOR UNITSMULTI F MULTI F MAX Cooling Capacity Table Table 67:Multi F Four-Way Ceiling-Cassette Indoor Units Cooling Capacity Table. Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) LCN127HV4 12,000 LMCN185HV 18,000 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 68 / 57 TC SHC 11.76 11.
MULTI F FOUR-WAY CEILING-CASSETTE INDOOR UNITS MULTI F MAX Heating Capacity Table Table 68:Multi F Four-Way Ceiling-Cassette Indoor Units Heating Capacity Table. Model No. / Nominal Capacity of Indoor Unit (Btu/h) LMCN077HV 7,000 64 TC Indoor Air Temp. °F DB 68 70 TC TC °F DB °F WB 61 TC 0 -0.4 4.17 4.11 4.07 72 TC 75 TC 4.05 3.99 3.82 5 4.5 4.70 4.64 4.60 4.58 4.52 4.34 10 9 5.22 5.17 5.13 5.11 5.05 4.87 17 15 5.93 5.87 5.83 5.81 5.75 5.56 20 19 6.19 6.13 6.
FOUR-WAY CEILING-CASSETTE INDOOR UNITSMULTI F MULTI F MAX Heating Capacity Table Table 69:Multi F Four-Way Ceiling-Cassette Indoor Units Heating Capacity Table. Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Nominal Capacity of Indoor Unit (Btu/h) LCN127HV4 12,000 LMCN185HV 18,000 Outdoor Air Temp. 64 TC Indoor Air Temp. °F DB 68 70 TC TC °F DB °F WB 61 TC 0 -0.4 7.10 7.00 6.93 72 TC 75 TC 6.90 6.80 6.50 5 4.5 8.00 7.90 7.83 7.80 7.70 7.40 10 9 8.90 8.
MULTI F FOUR-WAY CEILING-CASSETTE INDOOR UNITS MULTI F MAX Acoustic Data Figure 160: Sound Pressure Level Measurement Location. • Measurement taken 4.9′ away from the unit. • Measurements taken with no attenuation and units operating at full load normal operating condition. • Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed. • Sound power levels are measured in dB(A)±3.
FOUR-WAY CEILING CASSETTE INDOOR UNITSMULTI F MULTI F MAX Acoustic Data Figure 162: LCN127HV4 and LMCN185HV Sound Pressure Level Diagrams.
MULTI F FOUR-WAY CEILING-CASSETTE INDOOR UNITS MULTI F MAX Air Velocity and Temperature Distribution Figure 163:LMCN077HV Air Velocity and Temperature Distribution Charts. Cooling Discharge angle: 40° Air velocity [ft/s] Air velocity [ft/s] 9f t 6.6 6.6 4.9 3.3 4.9 3.3 6.6 7f t 4.9 4.9 5f t 0f t 5 ft 8 ft 7f t 3.3 1.6 1.6 3f t 1.6 9f t 6.6 3.3 1.
FOUR-WAY CEILING CASSETTE INDOOR UNITSMULTI F MULTI F MAX Air Velocity and Temperature Distribution Figure 165:LCN127HV4 Air Velocity and Temperature Distribution Charts. Cooling Discharge angle: 40° Heating Discharge angle: 50° Air velocity [ft/s] Air velocity [ft/s] 9ft 6.6 Multi F and Multi F MAX Indoor Unit Engineering Manual 6.6 4.6 7ft 4.6 4.6 3.3 1.6 3ft 0ft 1.6 1.
MULTI F FOUR-WAY CEILING-CASSETTE INDOOR UNITS MULTI F MAX Refrigerant Flow Diagram Figure 167: Multi F Four-Way Ceiling-Cassette Indoor Unit Refrigerant Flow Diagram.
FOUR-WAY CEILING CASSETTE INDOOR UNITSMULTI F MULTI F MAX Wiring Diagram Multi F and Multi F MAX Indoor Unit Engineering Manual Figure 168: Multi F Four-Way Ceiling-Cassette Indoor Unit Wiring Diagram. 126 | CEILING-CASSET TE 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 FOUR-WAY CEILING-CASSETTE INDOOR UNITS MULTI F MAX Factory Supplied Parts and Materials Factory Supplied Parts Table 73: Parts Table.
FOUR-WAY CEILING CASSETTE INDOOR UNITSMULTI F MULTI F MAX Installation and Best Layout Practices Selecting the Best Location Figure 169:Indoor Unit Clearance Requirements. ≥11-13/16 inches Ceiling Tile ≥19-11/16 inches • Do not install the unit near a heat or steam source, or where considerable amounts of oil, iron powder, or flour are used. • Do not install the unit where sulfuric acid and flammable or corrosive gases are generated, vented into, or stored.
MULTI F FOUR-WAY CEILING-CASSETTE INDOOR UNITS MULTI F MAX Installation and Best Layout Practices Installing Multiple Indoor Units in One Area Ensure there is enough space between indoor units, lighting fixtures, and ventilation fans / systems. Figure 171:Installing Multiple Indoor Units.
FOUR-WAY CEILING CASSETTE INDOOR UNITSMULTI F MULTI F MAX Installation and Best Layout Practices Multi F and Multi F MAX Indoor Unit Engineering Manual For New Ceilings Figure 175:Hanging the Indoor Unit. 1. Use a sunken insert, a sunken anchor, or any other field-supplied part to reinforce the Hanging bolt ceiling so that it can bear the weight of the indoor unit. Use a temporary washer plate (W3/8 or M10) to more easily set up the unit suspension location. Nut 2.
Liquid Piping Connection Insulation for Refrigerant Piping MULTI F FOUR-WAY CEILING-CASSETTE INDOOR (Field-Supplied) UNITS MULTI F MAX Installation and Best Layout Practices Clamp for Insulation (Field-Supplied) Insulation (Field-Supplied) Insulating the Refrigerant and Drain Piping Vapor Piping Connection Figure 178:Insulating the Piping. Insulation for Refrigerant Piping (Field-Supplied) Insulation for Field-Installed Piping (Field-Supplied) Ensure all piping is insulated.
FOUR-WAY CEILING CASSETTE INDOOR UNITSMULTI F MULTI F MAX Installation and Best Layout Practices Connecting the Power Wiring and Communications Cable Figure 179:Power Wiring and Communications Cable Connection Access. 2. Insert the power wiring / communications cable from the outdoor unit or branch distribution unit (Multi F MAX systems only) through the sides of the indoor unit and control box. Pass the wiring through the designated access holes to prevent damage.
MULTI F FOUR-WAY CEILING-CASSETTE INDOOR UNITS MULTI F MAX Installation and Best Layout Practices Controller Options Four-way ceiling-concealed indoor units include a wireless handheld controller (AKB73757604)1, but optional LG-supplied wired controllers are available. Wireless Handheld Controller Figure 182:AKB73757604 Wireless Handheld Controller. Table 76:AKB737576041 Wireless Handheld Controller Functions.2 Button Description Label 1 Vane Angle Button: Sets the angle to each vane.
FOUR-WAY CEILING CASSETTE INDOOR UNITSMULTI F MULTI F MAX Installation and Best Layout Practices Multi F and Multi F MAX Indoor Unit Engineering Manual Wired Controller Placement 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 FOUR-WAY CEILING-CASSETTE INDOOR UNITS MULTI F MAX Installation and Best Layout Practices PTVK430 Ventilation Kit Figure 188:PTVK430 Ventilation Kit. PTVK430 Ventilation Kit includes a flange for field-supplied ventilation pipe connection. Easily connects at the four-way ceiling-cassette three (3) inch fresh air knockout hole.
TWO-WAY VERTICAL-HORIZONTAL AIR HANDLING INDOOR UNIT DATA “Mechanical Specifications” on page 137 “General Data / Specifications” on page 138 “Dimensions” on page 139 “Cooling Capacity Table” on page 140 “Heating Capacity Table” on page 141 “External Static Pressure” on page 142 “Acoustic Data” on page 143 “Refrigerant Flow Diagram” on page 144 “Wiring Diagram” on page 145 “Factory Supplied Parts and Materials” on page 147 “Installation and Best Layout Practices” on page 148
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Mechanical Specifications and Features Two-way Vertical-Horizontal Air Handing Indoor Unit General All LG indoor units are factory assembled, wired, piped, and provided with a control circuit board, fan, and motor. Vertical-Horizontal Air Handling units are designed for high-speed air volume against an external static pressure up to 1.00″WG.
TWO-WAY VAHU INDOOR UNITS General Data / Specifications MULTI F MULTI F MAX Table 77: Multi F Vertical-Horizontal Air Handling Indoor Unit General Data. Model Name Nominal Cooling Capacity (Btu/h) LMVN240HV LMVN360HV 24,000 36,000 27,000 40,000 57-77 57-77 59-81 59-81 Sircocco Sircocco 96 x 1 182 x 1 Brushless Digitally Controlled / Direct Brushless Digitally Controlled / Direct 710 / 640 / 480 990 / 880 / 800 1.00 1.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Dimensions Figure 192: LMVN240HV and LMVN360HV Dimensions. 18 17 D 12-1/8 21-1/4 W 1-9/16 H 1-15/16 1-5/8 Vertical-Horizontal Air Handling 1-15/16 2-1/16 2-1/8 1-9/16 48-21/32 49-5/16 2-9/16 1-1/2 14-5/16 4-11/16 1-9/16 9-15/16 13 LMVN240HV LMVN360HV Model 18 W H Unit: Inch D 48-21/32 21-1/4 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Cooling Capacity Table Table 78: Multi F Vertical-Horizontal Air Handling Indoor Units Cooling Capacity Table. Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) LMVN240HV 24,000 LMVN360HV 36,000 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 68 / 57 TC SHC 23.53 23.51 23.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Heating Capacity Table Table 79: Multi F Vertical-Horizontal Air Handling Indoor Units Heating Capacity Table. Model No. / Nominal Capacity of Indoor Unit (Btu/h) LMVN240HV 24,000 61 64 Indoor Air Temp. °F DB 68 70 72 75 °F DB °F WB TC TC TC TC TC TC 0 -0.4 13.89 13.70 13.57 13.50 13.30 12.72 5 4.5 15.65 15.46 15.33 15.26 15.07 14.48 10 9 17.41 17.22 17.09 17.02 16.83 16.24 17 15 19.76 19.57 19.43 19.37 19.17 18.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS External Static Pressure Table 80: Multi F Vertical-Horizontal Air Handling Unit External Static Pressure Setting Values Table. Static Pressure (in. wg) 0.1 0.2 0.3 0.4 Model No. / Nominal Capacity Airflow Rate / CFM of Indoor Unit (Btu/h) Multi F and Multi F MAX Indoor Unit Engineering Manual LMVN240HV 24,000 LMVN360HV 36,000 High Mid Low High Mid Low 0.5 0.6 0.7 0.8 0.9 1.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Acoustic Data Measurement taken 3.3′ away from the unit. Measurements taken with no attenuation and units operating at full load normal operating condition. Sound level will vary depending on a range of factors such as construction (acoustic absorption coefficient) of particular area in which the equipment is installed. • Sound power levels are measured in dB(A)±3. • Tested in anechoic chamber per ISO Standard 3745. 3.3 ft.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Refrigerant Flow Diagram Figure 195: Multi F Vertical-Horizontal Air Handling Indoor Unit Refrigerant Flow Diagram.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Wiring Diagram Figure 196: Multi F Vertical-Horizontal Air-Handling Indoor Unit Wiring Diagram. Vertical-Horizontal Air Handling : Factory Wiring : Field Wiring : OPTION Table 87: Wiring Diagram Connections.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Wiring Diagram Table 88: DIP Switch Settings. Dip Switch Settings Multi F and Multi F MAX Indoor Unit Engineering Manual SW3 GROUP OFF ON Description Master Slave Group control setting using wired remote controller. Dry contact mode setting. 1. Variable: Auto/manual mode can be chosen using the wide wired remote controller or wireless remote controller (factory setting is the manual mode). 2. Auto: For dry contact, it is always auto mode.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Factory Supplied Parts and Materials Factory Supplied Materials • Owner’s Manual • Installation Manual • Simple Controller with Mode Selection (AKB72955816)1 Simple Mode Controllers for the vertical-horizontal air handling indoor units are also referenced by Model No. PQRCVCL0QW.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Figure 198:General and Duct Connection Dimensions. Figure 197:Clearance Requirements.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Vertical-Horizontal Air Handling Units can be installed in a choice of vertical (upflow) or horizontal (left side) configurations. Vertical (Upflow) Installation Figure 200:Vertical Installation / Attaching the Bottom Duct. • Unit must be positioned properly for plenum / duct installation. Field Supplied Supply Air Duct • To maintain proper air flow, minimum height clearance is 14 inches.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Installing the Ducts Figure 202:Securing the Ducts to the Unit. • Use more than ten (10) screws to securely attach the supply ducts to the unit. To prevent air leaks, seal around the duct opening before the duct is secure. Multi F and Multi F MAX Indoor Unit Engineering Manual • To prevent vibration transmission, install flexible connectors between ducts and the unit.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Drain Piping Specifications • Drain piping must have downward gradient of at least 1/50 to 1/100; to prevent reverse flow, slope should not be straight up and down. • Do not damage the drain port on the indoor unit when connecting the field-supplied drain piping. Figure 205:Close up of Drain Piping Connection.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Installation and Best Layout Practices • • • • • • • Follow manufacturer’s circuit diagrams in the technical manuals. Confirm power source specifications. Confirm that the electrical capacity is sufficient. Starting current must be maintained ±10 percent of the rated current marked on the outdoor unit name plate. Confirm cable thickness specifications. It is recommended that a circuit breaker is installed, especially if conditions could become wet or moist.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Controller Options AKB729558161 Wired Controller. Vertical-Horizontal Air Handling indoor units include an LG-supplied wired controller (AKB72955816)1, but other optional LG-supplied wired controllers are available. The wireless handheld controller (Model No. PQWRHQ0FDB) is also an optional accessory with use of the wired controller.
MULTI F MULTI F MAX TWO-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Wired Controller Placement Multi F and Multi F MAX Indoor Unit Engineering Manual 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 Vertical-Horizontal Air Handling 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.
FOUR-WAY VERTICAL-HORIZONTAL AIR HANDLING INDOOR UNIT DATA “Mechanical Specifications” on page 157 “General Data / Specifications” on page 157 “Dimensions” on page 158 “Cooling Capacity Table” on page 160 “Heating Capacity Table” on page 162 “External Static Pressure” on page 164 “Acoustic Data” on page 167 “Refrigerant Flow Diagram” on page 170 “Wiring Diagram” on page 171 “Factory Supplied Parts and Materials” on page 173 “Installation and Best Layout Practices” on page 174
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Mechanical Specifications and Features Four-way Vertical-Horizontal Air Handing Indoor Unit General All LG indoor units are factory assembled, wired, piped, and provided with a control circuit board, fan, and motor. Vertical-Horizontal Air Handling units are designed for high-speed air volume against an external static pressure up to 1.00″WG.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS General Data / Specifications Table 91: Multi F Vertical-Horizontal Air Handling Indoor Unit General Data. Model Name LVN180HV4 LVN240HV4 LVN360HV4 18,000 24,000 36,000 20,000 27,000 40,000 57-77 57-77 57-77 59-81 59-81 59-81 Type Sircocco Sircocco Sircocco Motor Output (W) x Qty.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Dimensions Figure 220: Four-way Vertical Air Handling Unit Dimensions.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Cooling Capacity Table Table 92: Multi F Vertical-Horizontal Air Handling Indoor Units Cooling Capacity Table. Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) LVN180HV4 18,000 LVN240HV4 24,000 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 14 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 118 122 68 / 57 TC SHC 17.65 17.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Cooling Capacity Table Table 91: Multi F Vertical-Horizontal Air Handling Indoor Units Cooling Capacity Table - continued Model No. / Air Nominal Capacity Outdoor Temp. of Indoor Unit (°F DB) (Btu/h) 35.29 35.26 35.24 35.21 35.18 35.16 35.13 35.10 35.08 35.05 35.02 34.99 34.15 33.31 32.48 31.64 30.74 29.99 29.24 28.49 27.74 27.29 27.14 27.18 27.39 27.61 27.82 28.03 28.24 28.45 28.66 28.87 29.08 29.29 29.50 29.01 28.52 28.00 27.47 27.18 26.45 25.72 24.84 24.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Heating Capacity Table Table 93: Multi F Vertical-Horizontal Air Handling Indoor Units Heating Capacity Table. Multi F and Multi F MAX Indoor Unit Engineering Manual Model No. / Nominal Capacity of Indoor Unit (Btu/h) LVN180HV4 18,000 LVN240HV4 24,000 Outdoor Air Temp. °F DB °F WB 0 -0.4 61 64 Indoor Air Temp. °F DB 68 70 72 75 TC TC TC TC TC TC 10.29 10.14 10.05 10.00 9.86 9.42 5 4.5 11.59 11.45 11.35 11.30 11.16 10.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Heating Capacity Table Table 92: Multi F Vertical-Horizontal Air Handling Indoor Units Heating Capacity Table - continued Model No. / Nominal Capacity of Indoor Unit (Btu/h) 64 TC Indoor Air Temp. °F DB 68 70 TC TC °F DB °F WB 61 TC 72 TC 75 TC 0 -0.4 20.58 20.29 20.10 5 4.5 23.19 22.90 22.71 20.00 19.71 18.84 22.61 22.32 10 9 25.80 25.51 21.45 25.31 25.22 24.93 17 15 29.28 24.06 28.99 28.79 28.70 28.41 20 19 27.
FOUR-WAY VAHU INDOOR UNITS External Static Pressure and Airflow Ranges Multi F and Multi F MAX Indoor Unit Engineering Manual Figure 221: ESP Setting Values – NJ Chassis, LVN180HV4, LVN240HV4 Figure 222: ESP Setting Values – NK Chassis, LVN360HV4. 164 | VERTICAL-HORIZONTAL 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 FOUR-WAY VAHU INDOOR UNITS External Static Pressure Table 94: Multi F Vertical-Horizontal Air Handling Unit External Static Pressure Setting Values Table. Static Pressure (in. wg) 0.1 0.2 0.3 0.4 Model No. / Nominal Capacity Airflow Rate / CFM of Indoor Unit (Btu/h) LVN240HV4 24,000 LVN360HV4 36,000 640 580 480 710 640 480 1,100 1,000 900 0.6 0.7 0.8 0.9 1.
FOUR-WAY VAHU INDOOR UNITS External Static Pressure MULTI F MULTI F MAX Multi F and Multi F MAX Indoor Unit Engineering Manual Table 97: Electric Heater Static Pressure Drop Factors. Heater Capacity Static Pressure Drop (in. wg) 0 0 3, 5 -0.01 8, 10 -0.02 15 -0.03 20 -0.04 If the electric heater optional accessory is installed, adjust ESP value according to heater size For every increase in static pressure by 0.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Acoustic Data Table 101: Optional Electric Heater Capacites. Heater Capacity (kW) 3 5 8 10 15 20 Static Pressure Drop (in. wg) ANEH033B1 ANEH053B1 ANEH083B2 ANEH103B2 ANEH153B2 ANEH203B2 Figure 223: Typical Vertical Air Handling Unit Optional Electric Heater Accessory. Vertical-Horizontal Air Handling Unit Example: 5kW Capacity Heater Bracket Bi metal Heater Coil Terminal Block Relay Heater Cable Appearance may vary depending on model capacity.
FOUR-WAY VAHU INDOOR UNITS Acoustic Data MULTI F MULTI F MAX Figure 224: Sound Pressure Level Measurement Location. Microphone • Measurement taken 3.3′ away from the unit. • Sound pressure levels are measured in dB(A) with a tolerance of ±3. • Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745. • Operating Conditions: Power source: 220V/60 Hz.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Acoustic Data Table 104: Vertical Air Handling Unit Sound Power Levels (dB[A]). Model No. LVN180HV4 LVN240HV4 LVN360HV4 Sound Power Levels (dB[A]) High Fan Speed 59 60 61 Figure 226: Sound Power Level Diagrams. LVN240HV4 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 FOUR-WAY VAHU INDOOR UNITS Refrigerant Flow Diagram Figure 227: Four-way Vertical-Horizontal Air Handling Indoor Unit Refrigerant Flow Diagram. Scirocco Fan Multi F and Multi F MAX Indoor Unit Engineering Manual M Vapor Pipe Connection Port Heat Exchanger (Flare Connection) Heating Evaporator Outlet Temperature Thermistor Cooling Ev.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Wiring Diagram Figure 228: Four-way Vertical-Horizontal Air-Handling Indoor Unit Wiring Diagram. Vertical-Horizontal Air Handling Unit 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 FOUR-WAY VAHU INDOOR UNITS Wiring Diagram Multi F and Multi F MAX Indoor Unit Engineering Manual Table 107: Wiring Diagram Connections.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Factory Supplied Parts and Materials Factory Supplied Materials • Owner’s Manual • Installation Manual • Simple Controller with Mode Selection (AKB72955816)1 Simple Mode Controllers for the vertical-horizontal air handling indoor units are also referenced by Model No. PQRCVCL0QW.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Figure 230:General and Duct Connection Dimensions. Figure 229:Clearance Requirements. Access Holes for Conduit More than 13-25/32 Refrigerant Piping Connections More than 23-5/8 clearance from access panels for Service Unit : inch 0 (zero) 0 (zero) Drain Connections for Horizontal Install More than 13-25/32 Filter Access Figure 231:Location of Access Holes and Piping Connections.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Do not install the screws on the front and back of the unit; doing so may block filter installation. >1 inch Vertical (Downflow) Installation The Vertical-Horizontal Air Handling Unit can be field-converted to vertical downflow operation. The Use > 6 Screws (M4*25L) optional vertical downflow kit is required.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Multi F and Multi F MAX Indoor Unit Engineering Manual Horizontal Installation • Units may be installed in horizontal left or horizontal right configuration. Horizontal left is the factory default configuration. For horizontal right, the unit must be field converted. The horizontal right conversion requires removing the internal drain pan from the left side of the unit and reinstalling on the right side.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Installing the Ducts Figure 236:Securing the Ducts to the Unit. • Use more than ten (10) screws to securely attach the supply ducts to the unit. To prevent air leaks, seal around the duct opening before the duct is secure. • To prevent vibration transmission, install flexible connectors between ducts and the unit.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Drain Piping Specifications • Drain piping must have downward gradient of at least 1/50 to 1/100; to prevent reverse flow, slope should not be straight up and down. • Do not damage the drain port on the indoor unit when connecting the field-supplied drain piping. Multi F and Multi F MAX Indoor Unit Engineering Manual Figure 239:Close up of Drain Piping Connection.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Power Wiring / Communications Cable Guidelines • • • • • • • Follow manufacturer’s circuit diagrams in the technical manuals. Confirm power source specifications. Confirm that the electrical capacity is sufficient. Starting current must be maintained ±10 percent of the rated current marked on the outdoor unit name plate. Confirm cable thickness specifications.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Controller Options AKB729558161 Wired Controller. • • • • • Operation Display Panel Temperature Control Button Fan Speed Button Operation Display Panel: Displays operation conditions. Temperature Control Button: Sets desired temperature. Fan Speed Button: Sets desired fan speed. On / Off Button: Turns system operation on and off.
MULTI F MULTI F MAX FOUR-WAY VAHU INDOOR UNITS Installation and Best Layout Practices Wired Controller Placement 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 and Multi F MAX Indoor Unit Engineering Manual MULTI F MULTI F MAX 182 | VERTICAL-HORIZONTAL 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.
APPLICATION GUIDELINES “Equipment Selection Procedure” on page 184 “Placement Considerations” on page 191
Multi F and Multi F MAX Indoor Unit Engineering Manual EQUIPMENT SELECTION PROCEDURE MULTI F MULTI F MAX To choose the multi-zone system that is the most appropriate for the space, as with traditional air-conditioning systems, follow similar protocols outlined in Manual J from the Air Conditioning Contractors of America (ACCA; see www.acca.org). 1. Obtain the design conditions, and calculate the maximum cool and heat loads for the structure. 2.
MULTI F MULTI F MAX EQUIPMENT SELECTION PROCEDURE Multiplier Examples Example 1 Outdoor Unit: LMU540HV First Indoor Unit: + Second Indoor Unit: + Third Indoor Unit: LMCN125HV LSN090HSV4 LVN360HV4 Total Capacity Index = 12 + 9 Branch Distribution Unit (PMBD3620) Example 2 Branch Distribution Unit (PMBD3641) + 36 x 1.3 = 67.8 < 73 Acceptable Combination Outdoor Unit: LMU540HV Total Capacity Index = First Indoor Unit: + Second Indoor Unit: LVN240HV4 LVN240HV4 24 x 1.2 + 24 x 1.2 = 57.
MULTI F MULTI F MAX EQUIPMENT SELECTION PROCEDURE Table 112: Allowable Indoor Unit to Multi F/ Multi F MAX with LGRED Outdoor Unit Connections.
MULTI F MULTI F MAX EQUIPMENT SELECTION PROCEDURE Table 113: Multi F/ Multi F Max with LGRED Rated Outdoor Unit Capacity. Rated Capacity (Btu/h)* Connectable Indoor Units Cooling Heating Minimum No. of Connectable IDUs Maximum No.
EQUIPMENT SELECTION PROCEDURE MULTI F MULTI F MAX Using the System Combination Tables Multi F and Multi F MAX Indoor Unit Engineering Manual Multi F system combination tables illustrate how each indoor unit receives a percentage of total outdoor unit rated capacity.
MULTI F MULTI F MAX EQUIPMENT SELECTION PROCEDURE Table 115: Multi F MAX Outdoor Unit to Branch Distribution Unit Refrigerant Line Length Derates. Main Piping Length (feet) 16.4 32.8 49.2 65.6 82.0 98.4 114.8 131.2 147.6 164.0 180.4 Cooling Capacity (%) 100.0 98.8 97.3 95.8 94.3 92.8 91.3 89.8 88.3 86.8 85.3 Heating Capacity (%) 100.0 99.6 99.2 98.7 98.3 97.8 97.4 96.9 96.5 96.0 95.
MULTI F MULTI F MAX EQUIPMENT SELECTION PROCEDURE Altitude Correction Factor The impact of air density must be considered on systems installed at a significant altitude above sea level, therefore, locally accepted altitude correction factors must be applied. Multi F and Multi F MAX Indoor Unit Engineering Manual Defrost Correction Factor for Heating Operation The outdoor unit heating capacity may need to be adjusted for frost accumulation on air-cooled systems.
MULTI F MULTI F MAX PLACEMENT CONSIDERATIONS Selecting the Best Location for the Indoor Units Note: Selecting the Best Location for the Branch Distribution (BD) Unit Note: Branch Distribution (BD) units are used only with Multi F MAX systems to distribute the refrigerant from the outdoor unit to up to eight indoor units.
MULTI F MULTI F MAX PLACEMENT CONSIDERATIONS Selecting the Best Location for the Outdoor Unit, continued. Multi F and Multi F MAX Indoor Unit Engineering Manual • Where piping between the outdoor unit, indoor unit(s), and BD units (Multi F MAX systems only) are within allowable limits. • Include space for drainage to ensure condensate flows properly out of the unit when it is in heating mode. Avoid placing the outdoor unit in a low-lying area where water could accumulate.
MULTI F MULTI F MAX PLACEMENT CONSIDERATIONS Outdoor Unit Platform Requirements Figure 254: Outdoor Unit Foundation Requirements. Unit: Inch Unit: Inch Minimum 3-15/16) Minimum 3-15/16 21-1/2 Minimum 14-9/16 21-1/2 LMU18CHV and LMU24CHV Outdoor Units Minimum 14-9/16 LMU30CHV and LMU36CHV Outdoor Units Table 118: Outdoor Unit Foundation Specifications.
MULTI F MULTI F MAX PLACEMENT CONSIDERATIONS Multi F and Multi F MAX Indoor Unit Engineering Manual Tie-Downs and Lightening Protection Figure 257: Lightening Protection Diagram. Tie-Downs • The strength of the roof must be checked before installing the outdoor units. • If the installation site is prone to high winds or earthquakes, when installing on the wall or roof, securely anchor the mounting base using a field-provided tie-down configuration approved by a local professional engineer.
MULTI F MULTI F MAX PLACEMENT CONSIDERATIONS Clearance Requirements when Different Obstacles are Present (Unit: Inch). Obstacle on the suction side only. m u inim M " 11 /16 -13 Obstacles on the suction side and on both left and right sides. Min imu m1 1-1 3/16 " imu m2 imu 3-1 Min 9/32 6" 13/1 1m1 Application Guidelines Min " Obstacles above and on the air intake side.
MULTI F MULTI F MAX PLACEMENT CONSIDERATIONS Clearance Requirements when Different Obstacles are Present, continued. (Unit: Inch) Where there obstacles both suction Where there are are obstacles on on both suction discharge sides (discharge side obstacle and and discharge sides (discharge side obstacle is higher outdoor unit). is higher thanthan the the outdoor unit).
REFRIGERANT PIPING DESIGN & LAYOUT BEST PRACTICES “Design Guideline Summary” on page 198 “Creating a Balanced System” on page 200 “Condensate Drain Piping” on page 201
MULTI F MULTI F MAX REFRIGERANT PIPING DESIGN Design Guideline Summary The following are examples of manual pipe size calculations. Designers are highly encouraged to use LATS for Multi F systems. Device Connection Limitations • The minimum number of connected and operating indoor units to Multi F / Multi F MAX systems is two, taking into consideration of the minimum combination ratio.
MULTI F MULTI F MAX REFRIGERANT PIPING DESIGN Design Guideline Summary The following are examples of manual pipe size calculations. Designers are highly encouraged to use LATS for Multi F systems. Multi F MAX System with One Branch Distribution Unit Example: LMU540HV outdoor unit with four (4) indoor units, and one (1) branch distribution unit connected. IDU BDU A B h1 ≤ 98.4 feet h2 ≤ 49.2 feet IDU B IDU B h3 ≤ 32.8 feet Refrigerant Piping Design and Best Practices ODU: Outdoor Unit.
REFRIGERANT PIPING DESIGN Creating a Balanced System / Manual Layout Procedure MULTI F MULTI F MAX Creating a Balanced / Quality Piping System Multi F and Multi F MAX Indoor Unit Engineering Manual Unlike designing duct-work or chilled and hot water pipe systems where balancing dampers, ball valves, orifices, circuit setters, or other flow control devices can be installed to modify or balance the flow of cooling medium, these cannot be used in a Multi F system.
MULTI F MULTI F MAX INSTALLATION & LAYOUT BEST PRACTICES Condensate Drain Piping Condensate Drain Piping Indoor Units All indoor units generate water during cooling operation, therefore, how to properly handle this condensation must be considered. Some indoor units include factory-installed drain pumps; others apply the gravity drain method. Table 125:Indoor Unit Drain Piping Specifications. Drain Type Drain Pipe Diameter (OD / ID, in.
Multi F and Multi F MAX Indoor Unit Engineering Manual MULTI F MULTI F MAX 202 | DESIGN & PRACTICES 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.
ELECTRICAL CONNECTIONS “General Information” on page 204 “Power Wiring (208-230V) and Communications Cable Details” on page 207 “Remote Controller Connections” on page 212 “Indoor Unit Group Control” on page 213
ELECTRICAL CONNECTIONS Multi F and Multi F MAX Indoor Unit Engineering Manual General Information MULTI F MULTI F MAX • All power (line voltage) wiring and communication cable installation must be performed by trained service providers working in accordance with all local, state, and National Electrical Code (NEC) / UL / ETL federal regulations related to electrical equipment and wiring, and following the manufacturer product diagrams, requirements, and instructions in this manual.
MULTI F MULTI F MAX ELECTRICAL CONNECTIONS General Information Power Supply / Power Wiring Specifications Figure 260: Multi F / Multi F MAX Outdoor Unit • Multi F systems operate at 1Ø, 208-230V, 60Hz, and power is wired to the outdoor unit Power Wiring. only. The outdoor unit will supply power to the indoor units and the branch distribution units (Multi F MAX systems only) through the communication / connection (power) cable.
MULTI F MULTI F MAX ELECTRICAL CONNECTIONS General Information Figure 262:Multi F System General Power / Communications System Schematic. Indoor Units Multi F and Multi F MAX Indoor Unit Engineering Manual Power Supply Circuit Breaker Ground Wiring Outdoor Unit Figure 263:Multi F MAX System General Power / Communications System Schematic. Indoor Units BD Unit Power Supply Circuit Breaker BD Unit Ground Wiring Outdoor Unit • Secure the separate wires in the control box panel using zip ties.
MULTI F MULTI F MAX ELECTRICAL CONNECTIONS Power Wiring (208-230V) and Communications Cable Details Figure 264: Multi F LMU18CHV System Power Wiring and Communications Cable.
ELECTRICAL CONNECTIONS Power Wiring (208-230V) and Communications Cable Details MULTI F MULTI F MAX Figure 265:Multi F LMU24CHV System Power Wiring and Communications Cable.
MULTI F MULTI F MAX ELECTRICAL CONNECTIONS Power Wiring (208-230V) and Communications Cable Details Figure 266:Multi F LMU30CHV and LMU36CHV System Power Wiring and Communications Cable.
MULTI F MULTI F MAX ELECTRICAL CONNECTIONS Power Wiring (208-230V) and Communications Cable Details Figure 267:Multi F MAX LMU480HV and LMU540HV System Power Wiring and Communications Cable.
MULTI F MULTI F MAX ELECTRICAL CONNECTIONS Power Wiring (208-230V) and Communications Cable Details Figure 268:Multi F MAX LMU600HV System Power Wiring and Communications Cable.
MULTI F MULTI F MAX ELECTRICAL CONNECTIONS Remote Controller Connections • 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. A maximum of four (4) kits (up to 165 feet) can be used.
MULTI F MULTI F MAX ELECTRICAL CONNECTIONS Indoor Unit Group Control Between Multiple Indoor Units Operating as a Group (Group Control) Figure 271:Example of Indoor Unit Group to Zone Controller Connections (Sig-12V-GND [Comm.] Terminal). 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.
MULTI F MULTI F MAX ACRONYMS Multi F and Multi F MAX Indoor Unit Engineering Manual Table 127: Table of Acronyms.
20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics, U.S.A., Inc. Commercial Air Conditioning Division 4300 North Point Parkway Alpharetta, Georgia 30022 www.lg-dfs.com LG Electronics Products Support 1-888-865-3026 USA Follow the prompts for HVAC products.