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LG MULTI F Engineering Manual

Multi-zone heat pump systems, 1.5 to 5 tons
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Multi-Zone Heat Pump Systems
1.5 to 5 Tons
Dual and Tri-Zone
Multi F
MULTI
MULTI
ENGINEERING MANUAL
Quad-Zone
Multi F
F
F
MAX
HEAT PUMP SYSTEM
Eight-Zone
Multi F MAX

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Summary of Contents for LG MULTI F

  • Page 1 MULTI MULTI HEAT PUMP SYSTEM ENGINEERING MANUAL Multi-Zone Heat Pump Systems 1.5 to 5 Tons Dual and Tri-Zone Quad-Zone Eight-Zone Multi F Multi F Multi F MAX...
  • Page 2 LATS software programs, and more, log in to www.lghvac.com. For continual product development, LG Electronics U.S.A., Inc. reserves the right to change specifications without notice. © LG Electronics U.S.A., Inc.

  • Page 3: Table Of Contents

    Center of Gravity / Corner Weights..................................... 23 Wiring Diagram ........................................24-27 Refrigerant Flow Diagrams ....................................28-30 Acoustic Data ........................................31-32 Operation Ranges ........................................33 Multi F MAX Outdoor Unit Product Data ................................34-43 ......................................35 General Data ......................................... 36-37 Electrical Data ..........................................37 Dimensions ..........................................38 Wiring Diagrams ........................................

  • Page 4: Unit Nomenclature

    MULTI UNIT NOMENCLATURE MULTI Multi-Zone Systems — Indoor Units and Outdoor Units 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...

  • Page 5: Lg Air Conditioner Technical Solution (Lats)

    LG offers, free of charge, LG Air Conditioner Technical Solution (LATS) software—a total design solution for LG air conditioning systems. To reduce the risk of designing an improper applied system or one that will not operate correctly, LG prefers that LATS software be used all projects. Formats LATS is available to LG customers in three user interfaces: LATS HVAC, LATS CAD2, and LATS Revit.
  • Page 6 LATS can generate an Excel GERP report that can imported into the LG SOPS pricing and ordering system.
  • Page 7 CFM, featured airflow specifications, and static pressure (if applicable) for each indoor unit. Avoid oversizing indoor units in an attempt to increase the air exchange rate in the space. Multi F and Multi F MAX systems are designed for minimum airflow over the coil to maximize latent capacity while cooling, maintain a comfortable, consistent discharge air temperature while heating, and minimize fan motor power consumption.

  • Page 8: Manual Equipment Selection Procedure

    In some designs, oversized indoor units may be unavoidable in the case where the smallest size indoor unit available from LG is larger than what is necessary to satisfy the zone load. This scenario may also occur when an indoor unit selection one size down from the selected unit is slightly short of fulfilling the design load requirements, and the designer must choose the next largest size unit.
  • Page 9 To evaluate the total outdoor unit capacity at design conditions, using LATS software (preferred method) or reference the Performance Data Capacity Tables found in the Multi F outdoor unit section in this manual. All design temperatures are not explicitly shown in the charts, therefore, interpolation may be necessary to calculate the capacity for specific design conditions.
  • Page 10 • A more accurate method to determine expected capacity would be to apply the outdoor unit’s corrected capacity instead of rated capacity. • For allocated capacity information, see the combination tables in the “Multi F / Multi F MAX Combination Data Manual” on www.lghvac.com.
  • Page 11 Heating Capacity (%) 100.0 99.6 99.2 98.7 98.3 97.8 97.4 96.9 96.5 96.0 95.6 Figure 3: Multi F MAX Outdoor Unit to Branch Distribution Unit Refrigerant Line Length Derate Chart. 100.0 95.0 Heating capacity 90.0 Cooling 85.0 capacity 80.0 75.0 70.0 32.8...
  • Page 12 If further system design assistance is needed, or you have a unique ties (applies in 99% of applications – consider total load when application you would like to discuss, contact your LG sales rep. latent load is greater than 30%).

  • Page 13: General Data

    MULTI F OUTDOOR UNIT DATA Mechanical Specifications on page 14 General Data on page 15 Electrical Data on page 19 Dimensions on page 20 Center of Gravity / Corner Weights on page 23 Wiring Diagrams on page 24 Refrigerant Flow Diagrams on page 28...
  • Page 14 The motors have inherent overload protection, permanently devices, and legs to secure the unit during installation. lubricated bearings, and a maximum speed up to 950 rpm (CHV models) or 840 rpm (HV models). All Multi F outdoor units have a Refrigerant System horizontal discharge airflow.
  • Page 15 At least two indoor units must be connected. For allocated capacity information, see the combination Piping lengths are equivalent. tables in the "Multi F / Multi F MAX Combination Data Manual" on www.lghvac.com. For performance Installation of an optional Low Ambient Wind Baffle Kit will allow operation down to -4°F in cooling mode.
  • Page 16 At least two indoor units must be connected. For allocated capacity information, see the combination Piping lengths are equivalent. tables in the "Multi F / Multi F MAX Combination Data Manual" on www.lghvac.com. For performance Installation of an optional Low Ambient Wind Baffle Kit will allow operation down to -4°F in cooling mode.
  • Page 17 At least two indoor units must be connected. For allocated capacity information, see the combination tables in the "Multi F / Multi F MAX Combina- tion Data Manual" on www.lghvac.com. For performance data, see "Multi F / Multi F MAX Performance Data Manual" on www.lghvac.com.
  • Page 18 At least two indoor units must be connected. For allocated capacity information, see the combination tables in the "Multi F / Multi F MAX Combina- tion Data Manual" on www.lghvac.com. For performance data, see "Multi F / Multi F MAX Performance Data Manual" on www.lghvac.com.
  • Page 19 MCA = Minimum Circuit Ampacity. - 36,000 ODU (LMU36CHV): 12,000 IDU x 4 Indoor Fan Motor (FLA) is based on the maximum combination of indoor units. The max combination for each outdoor unit is: MULTI F OUTDOOR UNIT | 19 ©...
  • Page 20 5. For LMU180HV Unit, ports A and B are available. 6. For LMU240HV Unit, ports A, B, and C are available. 20 | MULTI F OUTDOOR UNIT ©...
  • Page 21 Main service valve (Vapor) and manufacturer requirements. Main service valve (Liquid) 5. For LMU18CHV Unit, ports A and B are available. 6. For LMU24CHV Unit, ports A, B, and C are available. MULTI F OUTDOOR UNIT | 21 ©...
  • Page 22 4. Electrical characteristics must be considered for electrical Main service valve (Vapor) work and design. The capacity of power cable and circuit breaker for the outdoor unit must follow local, state, national, and manufacturer requirements. 22 | MULTI F OUTDOOR UNIT ©...
  • Page 23 109.8 101.0 22 7/16 11 3/16 5 19/32 23 1/16 14 13/32 13.3 21.0 40.8 25.9 LMU240HV 110.2 101.4 22 7/16 11 3/16 5 19/32 23 1/16 14 13/32 13.4 21.1 41.0 26.0 MULTI F OUTDOOR UNIT | 23 ©...

  • Page 24: Wiring Diagram

    24 | MULTI F OUTDOOR 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.
  • Page 25 MULTI MULTI F OUTDOOR UNIT MULTI Wiring Diagram Figure 11: LMU18CHV Wiring Diagram. MULTI F OUTDOOR UNIT | 25 ©...
  • Page 26 MULTI MULTI F OUTDOOR UNIT MULTI Wiring Diagram Figure 12: LMU24CHV Wiring Diagram. 26 | MULTI F OUTDOOR UNIT ©...
  • Page 27 MULTI MULTI F OUTDOOR UNIT MULTI Wiring Diagram Figure 13: LMU30CHV and LMU36CHV Wiring Diagram. MULTI F OUTDOOR UNIT | 27 ©...
  • Page 28 Table 17: LMU180HV and LMU18CHV Thermistor Details. Description PCB Connector Condenser Outlet Temperature Thermistor CN_C/PIPE Condensing Temperature Thermistor CN_MID Inlet Air Temperature Thermistor CN_AIR Discharge Temperature Thermistor CN_DISCHARGE Suction Temperature Thermistor CN_SUCTION Pressure Sensor CN_H_PRESS 28 | MULTI F OUTDOOR UNIT ©...
  • Page 29 Table 18: LMU240HV and LMU24CHV Thermistor Details. Description PCB Connector Condenser Outlet Temperature Thermistor CN_C/PIPE Condensing Temperature Thermistor CN_MID Inlet Air Temperature Thermistor CN_AIR Discharge Temperature Thermistor CN_DISCHARGE Suction Temperature Thermistor CN_SUCTION Pressure Sensor CN_H_PRESS MULTI F OUTDOOR UNIT | 29 ©...
  • Page 30 Table 19: LMU30CHV and LMU36CHV Thermistor Details. Description PCB Connector Condensing Temperature Thermistor CN_TH4 Condenser Outlet Temperature Thermistor CN_TH2 Inlet Air Temperature Thermistor Discharge Temperature Thermistor CN_TH3 Suction Temperature Thermistor Pressure Sensor CN_TH1 30 | MULTI F OUTDOOR UNIT ©...
  • Page 31 • Tested in anechoic chamber per ISO Standard 3745. Table 20: Sound Pressure Levels (dB[A]). Sound Pressure Level (dB[A]) Model No. Cooling Heating LMU180HV LMU18CHV LMU240HV LMU24CHV LMU30CHV LMU36CHV Figure 18: Sound Pressure Level Diagrams. MULTI F OUTDOOR UNIT | 31 ©...
  • Page 32 • 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. • Figure 20: Sound Power Level Diagrams. 32 | MULTI F OUTDOOR UNIT ©...
  • Page 33 Continuous Operation 91.3 57 59 82.4 Indoor Temperature (°F DB) Indoor Temperature (°F WB) Cooling operation range can extend down to -4 °F outdoor temperature if Low Ambient Kit is installed (sold separately). MULTI F OUTDOOR UNIT | 33 ©...

  • Page 34: Acoustic Data

    MULTI F MAX OUTDOOR UNIT DATA Mechanical Specifications on page 35 General Data on page 36 Electrical Data on page 37 Dimensions on page 38 Wiring Diagrams on page 39 Refrigerant Flow Diagram” on page 41 Acoustic Data on page 42...
  • Page 35 -4°F to +64°F mounted to avoid the transmission of vibration. Compressor in the ambient wet bulb without additional low ambient controls. Multi F MAX outdoor unit is equipped with a hot gas bypass valve. Frame Fan and Motors...
  • Page 36 Rated heating capacity obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet the BD unit (Multi F MAX systems only), and 14 AWG, 4-conductor from the BD unit to the indoor unit, bulb (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).

  • Page 37: Electrical Data

    At least two indoor units must be connected. For allocated capacity information, see the combination tables in the "Multi F / Multi F MAX Combina- tion Data Manual" on www.lghvac.com. For performance data, see "Multi F / Multi F MAX Performance Data Manual" on www.lghvac.com.
  • Page 38 Figure 23: LMU480HV, LMU540HV, and LMU600HV External Dimensions. 4-holes for anchor bolts Part Name Liquid pipe connection Gas pipe connection 6-1/2 24-13/32 6-1/2 Air discharge grille Power & transmission connection Supporter 14-1/20 Unit: inch 37-13/32 Center of Gravity 38 | MULTI F MA X OUTDOOR UNIT ©...

  • Page 39: Wiring Diagrams

    MULTI MULTI F OUTDOOR UNIT MULTI Wiring Diagram Figure 24: LMU480HV and LMU540HV Wiring Diagram. MULTI F MA X OUTDOOR UNIT | 39 ©...
  • Page 40 MULTI MULTI F OUTDOOR UNIT MULTI Wiring Diagram Figure 25: LMU600HV Wiring Diagram. 40 | MULTI F MA X OUTDOOR UNIT ©...

  • Page 41: Refrigerant Flow Diagrams

    Heat Exchanger Inlet Temperature Thermistor CN-TH3 CN_MID_BR Heat Exchanger Outlet Temperature Thermistor CN_C_PIPE_VI CN-TH1 Inlet Air Temperature Thermistor CN_AIR_YL Discharge Pipe Temperature Thermistor CN_DISCHA_BK CN-TH2 Suction Pipe Temperature Thermistor CN_SUCTION_GR Pressure Sensor CN-P/SENSOR(H) CN_H_PRESS_RD MULTI F MA X OUTDOOR UNIT | 41 ©...

  • Page 42: Acoustic Data

    Figure 28: Sound Pressure Diagrams. LMU480HV, LMU540HV LMU600HV ▲ Cooling Heating NC-65 NC-60 NC-55 NC-50 NC-45 NC-40 NC-35 NC-30 NC-25 Approximate NC-20 Hearing Threshold NC-15 1000 2000 4000 8000 Octave Band Center Frequency (Hz) 42 | MULTI F MA X OUTDOOR UNIT ©...
  • Page 43 57 59 73 77 82.4 Indoor Temperature (°F DB) Indoor Temperature (°F WB) Cooling operation range can extend down to -4 °F outdoor temperature if Low Ambient Kit is installed (sold separately). MULTI F MA X OUTDOOR UNIT | 43 ©...
  • Page 44 MULTI F MAX BD UNIT DATA Mechanical Specifications on page 45 General Data on page 46 Dimensions on page 47 Wiring Diagram on page 48 Refrigerant Flow Diagram on page 49 Y-Branch Accessory on page 50 Branch Distribution Unit Orientation on page 51...

  • Page 45: Multi F Max Bd Unit

    Figure 30: PMBD3620 Two-Port Branch Distribution Unit. General Branch distribution units are designed for use with LG Multi F MAX (LMU480HV and LMU540HV) outdoor units, and are internally piped, wired, assembled and run-tested at the factory. The branch distribution unit is used as an intermedi-...

  • Page 46: General Data

    Branch Distribution Unit can accommodate from one (1) indoor unit up to four (4) indoor units depending on the ports available on the Branch Distribution Unit. All power wiring / communication cable to be minimum 14 AWG, 4-conductor from the outdoor unit to the BD unit (Multi F MAX systems only), and 14 AWG, 4-conductor from the BD unit to the indoor unit, stranded, shielded or unshielded (if shielded, it must be grounded to the chassis of the outdoor unit only), and must comply with applicable local and national codes.
  • Page 47 MULTI MULTI F MAX BD UNIT MULTI Figure 33: PMBD3620, PMBD3630, PMBD3640, and PMBD3641 External Dimensions. A-C (and PMBD3640 D) Connections: Unit: Inch Liquid Pipe Ø1/4 Gas Pipe Ø3/8 PMBD3641 D Connections: Ø3/4 Liquid Pipe Ø1/4 Gas Pipe Ø1/2 Indoor Unit Piping Direction Ø3/8...

  • Page 48: Wiring Diagram

    MULTI MULTI F MAX BD UNIT MULTI Wiring Diagram Figure 34: PMBD3620, PMBD3630, PMBD3640, PMBD3641 Wiring Diagram. Model Dependant Model Dependant Model Dependant Troubleshooting Model Dependant PMBD3620 BD Unit supplied with "A, B". PMBD3630 BD Unit supplied with "A, B, C".
  • Page 49 MULTI MULTI F MAX BD UNIT MULTI Refrigerant Flow Diagram Figure 35: PMBD3620, PMBD3630, PMBD3640, PMBD3641 Refrigerant Flow Diagram. Main gas piping (Ø 3/4) Outdoor Unit *PMBD3641 Main liquid D Gas: Ø1/2 piping (Ø 3/8) D Gas (Ø3/8) EEV-A C Gas (Ø3/8) B Gas (Ø3/8)
  • Page 50 ±5° rotation. Y-branches must be properly installed following instructions in the applicable LG manual. Y-branches must always be installed with the single port facing the outdoor unit and the two-port end facing the branch distribution units.
  • Page 51 MULTI MULTI F MAX BD UNIT MULTI Multi F MAX Branch Distribution (BD) Units can be installed in a multitude of options to fit various building configurations and job or application requirements. This material is for informational or educational purposes Multi F MAX BD Units include electronic expansion valves that properly seat only if only.

  • Page 52: Electrical Connections

    ELECTRICAL CONNECTIONS General Information on page 53 Systems for Multi F on page 56 Systems for Multi F MAX on page 59 Indoor Units / Controllers on page 61...
  • Page 53 MULTI ELECTRICAL CONNECTIONS MULTI General Information • All power (line voltage) wiring and communication cable installation must be performed by trained service providers working in accordance with local, state, and National Electrical Code (NEC) / UL federal regulations related to electrical equipment and wiring, and following the manufacturer product diagrams, requirements, and instructions in this manual.
  • Page 54 Figure 43: Multi F / Multi F MAX Outdoor Unit Power Wiring. • Multi F and Multi F MAX systems operate at 1Ø, 208-230V, 60Hz, and power is wired to the outdoor unit 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.
  • Page 55 Figure 45: Multi F System General Power / Communications System Indoor Units Schematic. Power Supply Circuit Breaker Ground Wiring Outdoor Unit Figure 46: Multi F MAX System General Power / Communications System Schematic. Indoor Unit BD Unit Power Supply Circuit Breaker BD Unit Ground Wiring Outdoor Unit •...
  • Page 56 MULTI ELECTRICAL CONNECTIONS MULTI Figure 47: Multi F LMU180HV and LMU18CHV System Power Wiring and Communications Cable. Power Supply Main Switch Outdoor Unit Outdoor Unit Terminal Block Circuit Breaker 1(L1) N(L2) (L)L1 N(L2) 3(A) 3(B) Fuse or L(L1) or 2(L2)
  • Page 57 MULTI ELECTRICAL CONNECTIONS MULTI Figure 48: Multi F LMU240HV and LMU24CHV System Power Wiring and Communications Cable. Power Supply Main Switch Outdoor Unit Outdoor Unit Terminal Block Circuit Breaker 1(L1) 1(L1) N(L2) N(L2) Fuse (L)L1 N(L2) 3(A) 3(B) 3(C) or 2(L2)
  • Page 58 MULTI ELECTRICAL CONNECTIONS MULTI Figure 49: Multi F LMU30CHV and LMU36CHV System Power Wiring and Communications Cable. Power Supply Main Switch Outdoor Unit Outdoor Unit Terminal Block Circuit Breaker L1 L2 1(L1) 2(L2) 3(A) 1(L1) 2(L2) 3(B) 1(L1) 2(L2) 3(C)
  • Page 59 MULTI ELECTRICAL CONNECTIONS MULTI Figure 50: Multi F MAX LMU480HV and LMU540HV System Power Wiring and Communications Cable. Power Supply Main Switch Outdoor unit Outdoor Unit Terminal Block Circuit Breaker 1( L1 ) 2 (L2 ) 3 (A ) 1( L1 ) 2 (L2 ) 3 (B)
  • Page 60 MULTI ELECTRICAL CONNECTIONS MULTI Figure 51: Multi F MAX LMU600HV System Power Wiring and Communications Cable. Power Supply Main Switch Outdoor unit Outdoor Unit Terminal Block Circuit Breaker 1( L1 ) 2 (L2 ) 3 (A ) 3 (B) Three-wire Power Wiring...
  • Page 61 • If using the LG Controller / Extension cable and the length needs to be extended, the LG Extension Kit (sold separately) must be used. A maximum of four (4) kits (up to 165 feet) can be used.
  • Page 62 Supplied For indoor units with CN-REMO connections: LG Supplied Group Control Kit (PZCWRCG3) Use one (or multiple) Group Control Kit(s) (sold separately) containing extension and Y-splitter cables. Use one (1) group control cable kit for each indoor unit in the group except for the last indoor unit.

  • Page 63: Piping Limitations And Placement Considerations

    PIPING LIMITATIONS AND PLACEMENT CONSIDERATIONS Piping Limitations on page 64 Selecting the Best Location for the Outdoor Unit on page 66 Outdoor Unit Clearance Requirements on page 68 Installing Outdoor Units Indoors on page 71 Selecting the Best Location for the Indoor Units / Branch Distribution Units on page 74...

  • Page 64: Piping Limitations

    Multi F / MAX 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 the minimum combination ratio. • The maximum number of indoor units for each Multi F / Multi F MAX heat pump systems is:...
  • Page 65 PIPING LIMITATIONS MULTI Following pages present Multi F / MAX piping limitations and are for illustrative purposes only. Designers are highly encouraged to use LATS when designing Multi F / MAX systems. Example of a Multi F MAX System with One Branch Distribution Unit...

  • Page 66: Selecting The Best Location For The Outdoor Unit

    • A location that allows for optimum air flow and is easily accessible for inspection, maintenance, and service. • Where piping between the outdoor unit and indoor unit (and branch distribution unit[s], if Multi F MAX) is within allowable limits.
  • Page 67 MULTI PLACEMENT CONSIDERATIONS MULTI Planning for Snow and Ice, continued. When deciding on a location to place the outdoor unit, be sure to choose an area where run-off from defrost will not accumulate and freeze on sidewalks or driveways, which will create unsafe conditions. Properly install and insulate any drain hoses to prevent the hose from freezing, cracking, leaking, and causing unsafe conditions from frozen condensate.
  • Page 68 When installing multiple outdoor units, see Cases 4 and 5 for correct spacing requirements. If the outdoor unit is installed between standard and minimum clearances, capacity decreases approximately 10%. Figure 57: Multi F 18,000, 24,000, 30,000, and 36,000 Capacity Outdoor Unit Service Access and Allowable Clearances Diagram. Case 1...
  • Page 69 PLACEMENT CONSIDERATIONS MULTI Multi F MAX Outdoor Unit (48,000, 54,000 and 60,000 Btu/h Capacity) Service Access and Allowable Clearances When installing the outdoor unit, consider service, inlet, and outlet, and minimum allowable space requirements as illustrated in the following diagrams.
  • Page 70 MULTI PLACEMENT CONSIDERATIONS MULTI Clearance Requirements when Different Obstacles are Present, continued. (Unit: Inch) Where there are obstacles on both suction Where there are obstacles on both suction Obstacles above and on the and discharge sides (discharge side obstacle air discharge side. and discharge sides (discharge side obstacle is higher than the outdoor unit).

  • Page 71: Installing Outdoor Units Indoors

    • Maintains coil heat transfer efficiency by reducing the number of and shortening the cycle time for defrost operation. • Easier maintenance and servicing during inclement weather. • When mounted in a fully enclosed space, limiting the ambient air temperature could allow the Multi F / Multi F MAX system designer to eliminate oversizing.
  • Page 72 MULTI PLACEMENT CONSIDERATIONS MULTI Provide a means to drain the condensate generated during heating mode and defrost cycle in addition to rainwater that infiltrates the inlet louver enclosed area. • Install a field-provided drain pan under the outdoor units and provide a path to a nearby floor drain. •...
  • Page 73 MULTI PLACEMENT CONSIDERATIONS MULTI Open Rate by Louver Radian Figure 61: Open Rate by Louver Radian Formula. ho = h * COS Total Area (A) = H * W Number of Open Spaces (N) = (Number of Louvers - 1) Effective Area (Af) = ho * W * N Louver Open Rate (n) = Af / A Af = A * n...

  • Page 74: Selecting The Best Location For The Indoor Units

    Selecting the Best Location for the Branch Distribution (BD) Unit Branch Distribution (BD) units are used only with Multi F MAX systems to distribute the refrigerant from the outdoor unit to up to eight (8) indoor units. Select location indoors that will meet the following conditions: •...
  • Page 75 Branch Distribution Unit Orientation Multi F MAX branch distribution units can be installed in a multitude of options to fit various building configurations and job or application requirements. The installation location of the PCB within the branch distribution unit can be changed for easier service access, depending on the branch distribution unit installation itself.
  • Page 77 20001747 ISO 9001: 2008 LG ELECTRONICS INC. EM_MultiFODU_01_2021 Supersedes: EM_MultiFODU_06_2020 EM_MultiFODU_04_2020 EM_MultiFODU_07_19 LG Electronics, U.S.A., Inc. EM_MultiFODU_03_17 Air Conditioning Technologies EM_MultiFODU_11_16 4300 North Point Parkway EM_MultiFODU_1_16 Alpharetta, Georgia 30022 EM_MultiFODU_10_15 www.lghvac.com...

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