LG Tri-Zone Multi F Installation Manual
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LG Tri-Zone Multi F Installation Manual

Outdoor unit, 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
INSTALLATION MANUAL
Quad-Zone
Multi F
F
F
MAX
OUTDOOR UNIT
Eight-Zone
Multi F MAX

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Summary of Contents for LG Tri-Zone Multi F

  • Page 1 MULTI MULTI OUTDOOR UNIT INSTALLATION 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 4. For more materials such as submittals, catalogs, engineering, installation, owner’s, and service manuals, visit 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: Safety Instructions

    Periodically check that the outdoor frame is not damaged. 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 4 There is a risk of product failure. 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 5 System may malfunction. 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 6 Do not open the inlet during operation. There is risk of unit failure. 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 7: Table Of Contents

    Caution for Refrigerant Leakage .................................... 72-73 Installation Checklists ......................................74-79 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 8 For performance data, see "Multi F / Multi F MAX Performance Data Manual" on www.lg-dfs.com. cooling mode. 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 9 These values can increase due to ambient conditions during operation. 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 10 11. Piping lengths are equivalent. 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 11: Electrical Data

    Indoor Fan Motor (FLA) is based on the maximum combina- tion of indoor units. 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 12: R410A Refrigerant

    551 psi design pressure of R410A. Inadequate piping may fail when pressurized. 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 13: General Installation Guidelines

    27-1/2 inches away from the outdoor unit to allow for airflow. 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 14: Rooftop Installations

    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 15 Obstacles on the suction side and on both left and right sides. 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 16: Allowable Clearances

    Obstacle just on the air discharge side. air discharge side. 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 17 Minimum 24" Minimum 40" 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 18 Figure 3: Close up of Bolt Attachment. Anchor Bolt 13/16 Unit: Inch 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 19: Platform Instructions

    6. Seal all wiring and piping access holes to prevent bugs from entering the Bolt Bolt 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 20 1-3/16 1-31/32 Piping to Indoor Units Service Direction 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 21 Figure 9: PMBD3620, PMBD3630, PMBD3640, and PMBD3641 External Dimensions. 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 22: Branch Distribution Unit Installation

    Into the Ceiling Into the Ceiling Into the Ceiling 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 23 Bottom of Unit Bott Bottom View, Port End Facing Up 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 24: Piping Preparation

    Ø5/8 0.06 ~ 0.07 Ø3/4 0.07 ~ 0.08 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 Connection Pipe Down Side Front Putty or Insulation (field-supplied) 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 26: Piping Materials And Handling

    24 hours 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 27 Selecting Field-Supplied Copper Tubing Type ACR copper is the only approved refrigerant pipe material for use with LG Multi F air conditioning products. ACR rated tubing is the only type that ships with yellow caps. Approved tubing for use with Multi F products will be marked “R410 RATED” along the length of the tube.
  • Page 28 Viewed from A in direction of arrow Within ± 3° Within ± 3° 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 29 (or fall) distance. 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 30 ASTM B-88 Standards. Inches to feet conversion (12 in./ft.) 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 31 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 32 Field-Provided Isolation Ball Valves LG maintains a neutral position on using isolation valves in VRF refrigerant piping systems. LG does not endorse any manufacturer of isola- tion valves. It is recognized that installing isolation valves may simplify future maintenance requirements, and, if used, considerations should be taken including, but not limited to, the following: •...
  • Page 33 A + B ~ 12" – 19" Max. 12" 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 34 Support Band Down Stop Hexagonal Nut Refrigerant Pipe 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 35: Refrigerant Piping Connections

    A, B, C, D: Pipes from Outdoor Unit to Indoor Unit. Max. 49.2 feet Max. 24.6 feet 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 36 ≤ 49.2 feet h1 ≤ 98.4 feet 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 37 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 38 Duct, Four-Way Cassette Connection Socket 24,000 Btu/h 36,000 Btu/h 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 39 17 for information in reference to outdoor unit placement and condensate drainage. 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 40 Configuration Configuration Within ± 3° Within ± 3° 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 41: Flushing The Refrigerant Piping

    (follow steps 3, 4, 5, and 6). 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 42: Leak Test And Vacuum Procedures

    Also test for leaks at both of the gas and liquid side service valves. 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 43 0.0 (0.0) (Time) 24 hours 5 minutes 3 minutes 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 44 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 45: Refrigerant Charge

    - (4 - 3) x 5.29 = 10.82 oz. 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 46 – (8 - 5) x 3.53 9,000 18,000 = 20.43 oz. 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 47 Check Valve Refrigerant Cylinder Vacuum Gauge (One) OPEN 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 48: Refrigerant Piping Insulation

    1 inch 1 inch ø1-1/2 inches ø1-3/4 inches 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 49 Vinyl cover should not be used. 40 in 40 in 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 50 BD unit (Multi F MAX systems only). 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 51 5. Seal any openings in the wall. Trap 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 52 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.

  • Page 53: Electrical Wiring

    LMU480HV, LMU540HV 1Ø,208-230V LMU600HV 1Ø,208-230V 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 54 Connecting cable 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 55: Power Wiring And Communications Cable Connections

    Do not use damaged or loose power wiring. 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 56 These wiring / cables should have separate conduits that are placed a reasonable distance apart. Communi- cation problems can arise from electrical noise. 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 57 3(A) 3(B) To BD Units A and B 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 58 3. Provide strain relief by securing the wiring / cable to the indoor unit with the factory-supplied clamps. 4. For more installation information for specific indoor units, refer to the separate indoor unit installation manuals on www.lg-dfs.com. Distributor (BD) Unit (Multi F MAX Systems Only)
  • Page 59 PI485 ance may differ depending on PI485 V-net Control Integration Board for Outdoor Units adapt Multi F, Multi F MAX systems to a LG VRF model). system central protocol for integration with LG central controllers. The PI485 is installed in the Multi F / Multi F MAX outdoor unit.

  • Page 60: Test Run

    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 61: Dip Switch Settings

    Reducing Power Consumption (Step 2) with Mode Lock (Heating) 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 62 • Turn DIP Switch 1 to OFF after finishing (Normal Operation setting). • 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 63 • Reduced Power Consumption reduces outdoor unit capacity. • 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 64 • Change the DIP switches if Night Quiet Mode is no longer desired. • • 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 65 Ten (10) Times DC Link Voltage 230V “dc” “230” 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 66: Self Diagnosis Functions

    • Unit Conversion: Converts metric values to imperial values. installed. 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 67 XP/Vista/7 32 bit (recommended), ® 64 bit installed. 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 68 LG SIMS The SIMs WLAN module and the smart phone app together provide monitoring and trouble- shooting capability for LG Multi F / Multi F MAX systems. SIMs functions only with LG Duct Free products. SIMs can display and graph operational data for the air conditioner system including the indoor unit and the outdoor unit.
  • Page 69 • ODU Electric - Out- door Unit Electric data graph is displayed. 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 70 Indoor unit EPROM error Indoor unit BLDC motor fan lock 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 71 Outdoor unit brushless direct current (BLDC) fan motor lock error Outdoor unit PFC overcurrent (peak) error 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 72: Caution For Refrigerant Leakage

    ASHRAE Standard 15 / 34 and addenda current as of the date of this publication. 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 73 Gas Leak Detector Indoor Unit Ventilation Inlet / Outlet 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 74: Installation Checklists

    (Optional) R410A rated full port ball valves were used at all indoor units and wherever appropriate in the refrigerant piping network. 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 75 Power wiring to the indoor units and branch distribution unit(s) (Multi F MAX only) was installed per all local electrical code requirements. LG-supplied cable was used between each indoor unit and its zone controller. No cables were spliced and no wire caps are present.
  • Page 76 Major Component Rough-In Piping and Insulation Brazing 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.
  • Page 77 Installation—Branch Distribution Unit (Multi F MAX Systems Only) Installation—Power Wire and Communications Cables 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 78 - ________CF x 5.29 - (________) = ________ Additional Charge (lbs.) 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 79 - ________CF x 3.53 - (________) = ________ Additional Charge (lbs.) 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 80 20001747 ISO 9001: 2008 LG ELECTRONICS INC. Refer to Service Manuals posted on www.lghvac.com for a full description of all error codes and work-arounds. LG Electronics Products Support 1-888-865-3026 USA LG Electronics, U.S.A., Inc. Follow the prompts for HVAC products.

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