Page 1 ENGINEERING MANUAL for Heat Pump and Heat Recovery Water Source Units Variable Refrigerant Flow Water Source Units 6.0 to 48.0 Tons...
Page 2 LG Electronics U.S.A., Inc., and is disclosed by LG Electronics U.S.A., Inc., only in confidence. This document is for design purposes only. EM_MultiV_WaterIV_5_16 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: Quality Commitment
Due to our policy of continuous product innovation, some specifications may change without notification. INTRODUCTION | 3 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 4: Table Of Contents
WSU Cooling/Heating Capacity Correction Factors ......77 Due to our policy of continuous product innovation, some specifications may change without notification. 4 | INTRODUCTION ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 5 INTRODUCTION Why use VRF? page 6 Engineers’ Advantage page 7...
Page 6: Why Use Vrf
Due to our policy of continuous product innovation, some specifications may change without notification. 6 | INTRODUCTION ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 7: Engineers' Advantage
Due to our policy of continuous product innovation, some specifications may change without notification. INTRODUCTION | 7 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 8 Due to our policy of continuous product innovation, some specifications may change without notification. 8 | INTRODUCTION ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 9 PRODUCT DATA Product Features and Benefits page 10 Unit Nomenclature page 12 General Data page 14 Electrical Data page 27 Water Source Unit Dimensions page 29 Heat Recovery Unit Dimensions page 32 Acoustic Data page 35 Head Loss by Water Flow page 52 Refrigerant Flow Diagrams page 53...
Page 10: Product Features And Benefits
This latest inverter technology allows the Due to our policy of continuous product innovation, some specifications may change without notification. 10 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 11: Operating Range
Figure 3: Triple-Frame Multi V Water IV Water Source Unit. Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 11 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 12: Unit Nomenclature
Generation 4 = Fourth Due to our policy of continuous product innovation, some specifications may change without notification. 12 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 13 2A = Series Number Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 13 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 14: General Data
When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. Due to our policy of continuous product innovation, some specifications may change without notification. 14 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 15 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 15 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 16 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. Due to our policy of continuous product innovation, some specifications may change without notification. 16 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 17 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 17 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 18 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. Due to our policy of continuous product innovation, some specifications may change without notification. 18 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 19 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 19 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 20: Arwb Series Heat Recovery Water Source Unit Specifications
When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. Due to our policy of continuous product innovation, some specifications may change without notification. 20 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 21 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 21 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 22 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. Due to our policy of continuous product innovation, some specifications may change without notification. 22 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 23 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 23 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 24 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. Due to our policy of continuous product innovation, some specifications may change without notification. 24 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 25 When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 25 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 26: Heat Recovery Unit Specifications And Electrical Data
208-230 / 60 / 1 0.040 0.040 Due to our policy of continuous product innovation, some specifications may change without notification. 26 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 27: Electrical Data
MCA = Minimum Circuit Ampacity. Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 27 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 28: Arwb Series Heat Recovery Water Source Units
Maximum allowable voltage unbalance is 2%. Due to our policy of continuous product innovation, some specifications may change without notification. 28 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 29: Water Source Unit Dimensions
Figure 7: Single Frame Heat Pump and Heat Recovery Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 29 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 30: Dual Frame Heat Pump And Heat Recovery
Figure 8: Dual Frame Heat Pump and Heat Recovery Due to our policy of continuous product innovation, some specifications may change without notification. 30 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 31: Triple Frame Heat Pump And Heat Recovery
Figure 9: Triple Frame Heat Pump and Heat Recovery Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 31 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 32: Heat Recovery Unit Dimensions
Figure 10: PRHR022A Heat Recovery Unit Due to our policy of continuous product innovation, some specifications may change without notification. 32 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 33: Prhr032A
Figure 11: PRHR032A Heat Recovery Unit Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 33 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 34: Prhr042A
Figure 12: PRHR042A Heat Recovery Unit Due to our policy of continuous product innovation, some specifications may change without notification. 34 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 35: Acoustic Data
ARWB432BAS4 ARWB384DAS4 ARWB480DAS4 ARWB576DAS4 Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 35 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 36: Sound Pressure Levels Arwn Series Heat Pump 208-230 Vac
Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. 36 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 37 Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 37 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 38 Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. 38 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 39 Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 39 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 40: Arwn Series Heat Pump 460 Vac
Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. 40 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 41 Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 41 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 42 Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. 42 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 43 Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 43 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 44: Arwb Series Heat Recovery 208-230 Vac
Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. 44 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 45 Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 45 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 46 Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. 46 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 47 Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 47 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 48: Arwb Series Heat Recovery 460 Vac
Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. 48 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 49 Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 49 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 50 Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. 50 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 51 Octave Band Center Frequency (Hz) Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 51 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 52: Head Loss By Water Flow
Water flow rate [GPM] Due to our policy of continuous product innovation, some specifications may change without notification. 52 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 53: Refrigerant Flow Diagrams
Check Valve Pressure Switch Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 53 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 54: Heating Operation
Check Valve Pressure Switch Due to our policy of continuous product innovation, some specifications may change without notification. 54 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 55: Arwb Heat Recovery Systems
Temperature Strainer Sensor Valve Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 55 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 56: Heating Operation
Temperature Strainer Sensor Valve Due to our policy of continuous product innovation, some specifications may change without notification. 56 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 57: Simultaneous Operation Mode 1 (Cooling Based Operation)
Temperature Strainer Sensor Valve Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 57 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 58: Simultaneous Operation Mode 2 (Heating Based Operation)
Temperature Strainer Sensor Valve Due to our policy of continuous product innovation, some specifications may change without notification. 58 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 59: Prhr022A, Prhr032A, Prhr042A Heat Recovery Units
D: Controls pressure between the high and low pressure vapor pipes during simultaneous operation. Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 59 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 60: Wiring Diagrams
ARWN Heat Pump Systems 208–230V 6/8 Ton Due to our policy of continuous product innovation, some specifications may change without notification. 60 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 61 ARWN Heat Pump Systems 208–230V 10/12 Ton Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 61 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 62 ARWN Heat Pump Systems 460V 6/8/10 Ton Due to our policy of continuous product innovation, some specifications may change without notification. 62 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 63 ARWN Heat Pump Systems 460V 12/14/16 Ton Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 63 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 64: Arwb Heat Recovery Systems
ARWB Heat Recovery Systems 208–230V 6/8 Ton Due to our policy of continuous product innovation, some specifications may change without notification. 64 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 65 ARWB Heat Recovery Systems 208–230V 10/12 Ton Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 65 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 66 ARWB Heat Recovery Systems 460V 6/8/10 Ton Due to our policy of continuous product innovation, some specifications may change without notification. 66 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 67 ARWB Heat Recovery Systems 460V 12/14/16 Ton Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 67 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 68: Prhr022A, Prhr032A, Prhr042A Heat Recovery Units
Setting, HR Unit Number Due to our policy of continuous product innovation, some specifications may change without notification. 68 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 69: Water Source Unit Accessories
LGMV screens shown are typical. Your display may be different depending on software version and units installed. Due to our policy of continuous product innovation, some specifications may change without notification. PRODUCT DATA | 69 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 70 • MS Office 2003, 2007 (recommended) for select reporting functions Due to our policy of continuous product innovation, some specifications may change without notification. 70 | PRODUCT DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 71 APPLICATION GUIDELINES Equipment Selection Procedure page 72 Building Ventilation Design Guide page 81 Placement Considerations page 84 LATS Multi V Piping Design Software page 90 Design Guideline Summary page 91 Refrigerant Piping Design page 93 Refrigerant Charge page 105 Installation & Layout Best Practices page 110 Cut Sheets page 121...
Page 72: Equipment Selection Procedure
To maximize Due to our policy of continuous product innovation, some specifications may change without notification. 72 | APPLICATION GUIDELINES ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 73 Due to our policy of continuous product innovation, some specifications may change without notification. APPLICATION GUIDELINES | 73 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 74 Due to our policy of continuous product innovation, some specifications may change without notification. 74 | APPLICATION GUIDELINES ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 75: Operating Temperature Range
The VRF system component size selections should be acceptable. At any time, if further system design assistance is needed or you have a unique application you would like to discuss, contact your LG applied equipment representative for assistance.
Page 76 130% = Maximum Combination Ratio. Due to our policy of continuous product innovation, some specifications may change without notification. 76 | APPLICATION GUIDELINES ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 77: Wsu Cooling/Heating Capacity Correction Factors
4. Proceed to the total equivalent pipe length calculation. Due to our policy of continuous product innovation, some specifications may change without notification. APPLICATION GUIDELINES | 77 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 78 (For ARWB Heat Recovery Units only) Due to our policy of continuous product innovation, some specifications may change without notification. 78 | APPLICATION GUIDELINES ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 79 Multiplying the WSU nominal heating capacity by 1.0 gives the corrected heating capacity Due to our policy of continuous product innovation, some specifications may change without notification. APPLICATION GUIDELINES | 79 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 80 1.0 0.98 0.96 0.95 Due to our policy of continuous product innovation, some specifications may change without notification. 80 | APPLICATION GUIDELINES ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 81: Building Ventilation Design Guide
LG Electronics, U.S.A., Inc. In all cases, the designer, installer, and contractor should understand if the suggested method is used, it is used at their own risk. LG Electronics U.S.A., Inc., takes no responsibility and offers no warranty, expressed or implied, of merchantability or fitness of purpose if this method fails to perform as stated or intended.
Page 82 Due to our policy of continuous product innovation, some specifications may change without notification. 82 | APPLICATION GUIDELINES ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 83 Due to our policy of continuous product innovation, some specifications may change without notification. APPLICATION GUIDELINES | 83 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 84: Placement Considerations
Figure 18: Moving Water Source Units Due to our policy of continuous product innovation, some specifications may change without notification. 84 | APPLICATION GUIDELINES ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 85 Figure 20: Dual Frame Installation. Due to our policy of continuous product innovation, some specifications may change without notification. APPLICATION GUIDELINES | 85 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 86 Note: • Consult with LG Electronics, U.S.A., Inc. if the available space is less than shown. If water piping passes along the side of a frame, ensure the indicated space is available after considering the space taken by the piping.
Page 87: Heat Recovery Units
Due to our policy of continuous product innovation, some specifications may change without notification. Metal hanger tab 3/8 or 5/16 3/8 or 5/16 APPLICATION GUIDELINES | 87 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 88 8. Elevation difference between the heat recovery unit and the indoor unit(s) should not exceed 131 feet. Due to our policy of continuous product innovation, some specifications may change without notification. 88 | APPLICATION GUIDELINES ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 89 REFRIGERANT PIPING DESIGN & LAYOUT BEST PRACTICES LATS Multi V Piping Design Software page 98 Design Guideline Summary page 99 Refrigerant Piping Design page 101 Refrigerant Charge page 113 Installation and Layout Best Practices page 118 Cut Sheets page 129 Electrical Connections page 135...
Page 90: Lats Multi V Piping Design Software
Due to our policy of continuous product innovation, some specifications may change without notification. 90 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 91: Design Guideline Summary
Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 91 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 92 Maximum Total Piping Length: 1,640' Due to our policy of continuous product innovation, some specifications may change without notification. 92 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 93: Refrigerant Piping Design
• Insulate all refrigerant system piping and piping connections as described in "Refrigerant Piping System Insulation" on page 119. Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 93 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 94 5/8 in (vapor). Due to our policy of continuous product innovation, some specifications may change without notification. 94 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 95 Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 95 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 96: Refrigerant Piping Installation
• Insulate all refrigerant system piping and piping connections as described in "Refrigerant Piping System Insulation" on page 119. Due to our policy of continuous product innovation, some specifications may change without notification. 96 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 97 1-5/8 1-3/8 1-5/8 1-3/8 Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 97 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 98 • [Length of pipe from water source unit to farthest indoor unit (A+B+C)] - [Length of pipe from water source unit to closest indoor unit (A+B+C)] ≤131 feet. Due to our policy of continuous product innovation, some specifications may change without notification. 98 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 99: Creating A Balanced / Quality Piping System
Refrigerant Piping System Quality Assurance To ensure that the refrigerant piping design meets LG’s quality standards, a LATS refrigerant piping design software report must be provided with every Multi V Water IV order. Following the installation, if any changes or variations to the design were necessary, an “as-built” LATS piping design software report must be provided to LG prior to system commissioning.
Page 100: Manual Layout Procedure
Manual Layout Procedure Note: LG Electronics, Inc. recommends using LATS Multi V software for all system designs. To get the free LATS system design software, contact your local LG representative. Use this procedure only if you choose to perform system design manually.
Page 101: Lg Engineered Y-Branch Kits
Only LG supplied Y-branch fittings can be used to join one pipe segment to two or more segments. Third-party or field-fabricated Tee's, Y-fittings, Headers, or other branch fittings are not qualified for use with LG Multi V IV systems. The only field-provided fittings allowed in a Multi V IV piping system are 45°...
Page 102: Lg Engineered Header Kits
Field supplied copper pipe Due to our policy of continuous product innovation, some specifications may change without notification. 102 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 103: Multi-Frame Connectors Arwn Heat Pump Systems
Facing down Facing up Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 103 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 104: Multi-Frame Connectors Arwb Heat Recovery Systems
2-3/4 inches long Due to our policy of continuous product innovation, some specifications may change without notification. 104 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 105: Refrigerant Charge
Refer to ASHRAE Standards 15 and 34. LG Multi V Water IV water source units ship from the factory with a charge of R410A refrigerant. This charge serves as the base charge and will not be sufficient for the system to operate. A trim charge based on system design must be added after system installation. LATS Multi V piping design software will calculate the size of the refrigerant piping and calculate the required refrigerant charge.
Page 106 6. Add the Additional Refrigerant Charge Required to the Total Factory Refrigerant Charge and record on line 37. This sum is the Total System Charge. Due to our policy of continuous product innovation, some specifications may change without notification. 106 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 107 For refrigerant charge purposes, consider only the liquid line; ignore the vapor line(s). Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 107 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 108 ARWN192DAS4 ARWN192DAS4 ARWN192DAS4 19.8 Due to our policy of continuous product innovation, some specifications may change without notification. 108 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 109 ARWB192DAS4 ARWB192DAS4 ARWB192DAS4 19.8 Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 109 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 110: Installation & Layout Best Practices
12 = Inches to feet conversion (12 in./ft.) Due to our policy of continuous product innovation, some specifications may change without notification. 110 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 111 Pipe length baseline temperature = 0°F. "Expansion of Carbon, Copper and Stainless Steel Pipe," The Engineers' Toolbox, www.engineeringtoolbox.com. Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 111 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 112 L = Centerline Minimum Radius (inches). Due to our policy of continuous product innovation, some specifications may change without notification. 112 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 113: Refrigerant Piping System Layout
Use of field-supplied isolation valves that are not full-port, rated for R410A refrigerant, and rated for 550 psi may result in refrigerant leaks. LG allows installation of field-supplied ball valves with Schrader ports at each indoor unit. Full-port isolation ball valves with Schrader ports (positioned between valve and indoor unit) rated for use with R410A refrigerant should be used on both the liquid and vapor lines.
Page 114: Pipe Supports
Max. 12" Max. 12" Due to our policy of continuous product innovation, some specifications may change without notification. 114 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 115 Pipe Sleeves at Penetrations LG requires that all pipe penetrations through walls and floors be properly insulated and routed through an appropriate wall sleeve of sufficient size to prevent compression of refrigerant pipe insulation and free movement of the pipe within the sleeve.
Page 116 Oil Trap ≥8 inches Due to our policy of continuous product innovation, some specifications may change without notification. 116 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 117 -10° Toward indoor unit Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 117 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 118 High pressure vapor pipe applies to ARWB Heat Recovery systems only. Due to our policy of continuous product innovation, some specifications may change without notification. 118 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 119 Mark all pipes at the point where the insulation jacket ends. Remove the jacket. Install field provided insulation on the run-out and main trunk pipes first. Install the LG-provided insulation plugs on the ends of all unused header ports. Peel the adhesive glue protector slip from the insulation jacket and install the clam-shell jacket over the fitting.
Page 120: Insulating The Refrigerant Piping
248°F. Due to our policy of continuous product innovation, some specifications may change without notification. 120 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 121: Cut Sheets
Water Source Unit Y-branch Kits for Heat Pump Systems • LG water source unit Y-branch fittings must be used with LG systems and be properly installed following the instructions in the applicable LG manual. Field-supplied branch fittings are not permitted.
Page 122: Indoor Unit Y-Branch Kits For Heat Pump Systems
O.D. 5/8 4-3/4 2-3/4 Due to our policy of continuous product innovation, some specifications may change without notification. 122 | APPLICATION GUIDELINES ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 123: Wsu Y-Branch Kits For Heat Recovery Systems
Water Source Unit Y-branch Kits for Heat Recovery Systems • LG water source unit Y-branch fittings must be used with LG systems and be properly installed following the instructions in the appli- cable LG manual. Field-supplied branch fittings are not permitted.
Page 124: Indoor Unit Y-Branch Kits For Heat Recovery Systems
4-3/4 AJR54072908 AJR54072904 AJR72963604 Due to our policy of continuous product innovation, some specifications may change without notification. 124 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 125: Header Kits
Design Pressure 550 psig Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 125 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 126 I.D. 5/8 I.D. 1-3/8 Due to our policy of continuous product innovation, some specifications may change without notification. 126 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 127: Electrical Connections
B terminals to B terminals. Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 127 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 128: Arwb Series Heat Recovery (208-230V And 460V)
B terminals to B terminals. Due to our policy of continuous product innovation, some specifications may change without notification. 128 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 129: Option Settings For All Water Source Units
Compressor Crankcase Heater ON / OFF Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 129 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 130: Dip Switch Settings For Generation 4 Equipment
DIP Switch Settings for Generation 4 Equipment Generation 4 Equipment The latest versions of LG’s indoor units and water source units are designated Generation 4 (Gen 4). For Gen 4 units to operate with Gen 4 features, the air conditioning system must meet the following requirements: •...
Page 131: Zone Control Of Indoor Units
IDU can be designated. Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 131 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 132: Communications Cable Wiring
Maintain polarity throughout the communication network. Due to our policy of continuous product innovation, some specifications may change without notification. 132 | REFRIGERANT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 133 WATER LOOP CIRCUIT DESIGN Water Design Guide page 134 Water Circuit Installation page 134139...
Page 134: Design Steps
Figure 67: Water Cooling Cycle Diagram Due to our policy of continuous product innovation, some specifications may change without notification. 134 | WATER CIRCUIT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 135: Water Design Guide
WSU if flow Due to our policy of continuous product innovation, some specifications may change without notification. WATER CIRCUIT DESIGN | 135 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 136 Figure 69:WSU Water and Refrigerant Connections Diagram Due to our policy of continuous product innovation, some specifications may change without notification. 136 | WATER CIRCUIT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 137: Freeze Protection
O = possibility of occurrence Due to our policy of continuous product innovation, some specifications may change without notification. WATER CIRCUIT DESIGN | 137 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 138: Water Circuit Installation
Due to our policy of continuous product innovation, some specifications may change without notification. 138 | WATER CIRCUIT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 139 Picture 3 Picture 4 Due to our policy of continuous product innovation, some specifications may change without notification. WATER CIRCUIT DESIGN | 139 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 140 Figure 73: WSU DIP Switch Settings for Solenoid Valve Control by WSU Due to our policy of continuous product innovation, some specifications may change without notification. 140 | WATER CIRCUIT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 141 Piping System Specifications Variable Water Flow Valve Control Kit PWFCKN000 (Optional) When entering water temperature is lower than 59ºF, variable water flow control kit PWFCKN000 is required. LG recommends installing a variable water flow control kit on each water source unit.
Page 142 Configuring Variable Water Flow Valve Control Kit for each WSU LG recommends installing a variable water flow valve control kit on each water source unit. Refer to Figure 75, Figure 76, and Figure 77 for single, dual, and triple frame configurations.
Page 143 Modulating Control Valve. The valve must be 24 volt, normally-closed. Due to our policy of continuous product innovation, some specifications may change without notification. WATER CIRCUIT DESIGN | 143 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 144 Modulating Control Valve. The valve must be 24 volt, normally-closed. Due to our policy of continuous product innovation, some specifications may change without notification. 144 | WATER CIRCUIT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 145: Open Tower Design
(Plate Type) Boiler Pump Due to our policy of continuous product innovation, some specifications may change without notification. WATER CIRCUIT DESIGN | 145 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 146 Due to our policy of continuous product innovation, some specifications may change without notification. 146 | WATER CIRCUIT DESIGN ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 147: Technical Data
TECHNICAL DATA Mechanical Specifications—Water Source Units page 149 Mechanical Specifications—Heat Recovery Units page 150 Acronyms page 151...
Page 148: Mechanical Specifications
Due to our policy of continuous product innovation, some specifications may change without notification. 148 | TECHNICAL DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 149: Water Source Units
HRU to which they are connected. Due to our policy of continuous product innovation, some specifications may change without notification. TECHNICAL DATA | 149 ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 150: Acronyms
Heating, Air Conditioning, and Refrigeration Ventilation Rate Procedure Due to our policy of continuous product innovation, some specifications may change without notification. 150 | TECHNICAL DATA ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 151 Due to our policy of continuous product innovation, some specifications may change without notification. ©LG Electronics U.S.A., Inc., Englewood Cliffs, N.J. All rights reserved. “LG” is a registered trademark of LG Corp.
Page 152 20001747 ISO 9001: 2008 LG ELECTRONICS INC. LG Electronics LG Electronics Commercial Products Support EM_MultiV_WaterIV_5_16 Commercial Air Conditioning Division 1-888-865-3026 USA Supercedes: EM_MultiV_WaterIV_11_15 4300 Northpoint Parkway, Suite 100 Follow the prompts for commercial A/C products. Alpharetta, Georgia 30022 Supercedes: EM_MultiV_WaterIV_5_15 Supercedes: EM-MultiV_WaterIV-02-15 www.lghvac.com...

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