LG Multi V Water IV Installation Manual Download

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Electrical System Installation

Due to our policy of continuous product innovation, some specifications may change without notification.

Communication Cable Between the Indoor Units and the

Wall-Mounted Zone Controller

Communication Cable Between Multiple Indoor Units

Operating as a Group (Group Control)

• Use only LG-provided three-conductor communications cable between the indoor unit and the

wall-mounted zone controller.

• NEVER splice, cut, or extend cable length with field provided cable. If the length must be extended,

use the LG Extension Kit (sold separately). A maximum of four (4) kits (up to 165 feet) can be

connected together.

• Set the indoor unit operating parameters with DIP switches on the indoor unit control PCB or by

setting the zone controller. Refer to the indoor unit installation manuals for details.

• If any indoor units operate as a group, use one (or multiple)

three-core Group Control Kit (sold separately) containing

extension and Y-splitter cables. One (1) group control cable kit

is required for each indoor unit in the group except for the last

indoor unit.

• Always use an LG provided group control communications

cable (Group Control Kit; sold separately) between the indoor

unit and the wall-mounted zone controller.

• NEVER splice or cut the communications cable. Do not short-

en the cable or extend cable length with field provided cable.

• Before running cable, decide which indoor unit will be the mas-

ter indoor unit. The zone controller connects to the master.

• Adjust the appropriate DIP switch at each indoor unit in the

group to identify it as the master or a slave. On wall mounted

indoor unit models, set the assignment using the handheld

remote controller.

• Use a daisy chain configuration and connect all of the group’s

indoor units together starting at the Master unit.

Communication Cable

ELECTRICAL SYSTEM INSTALLATION

CN-REMO

On All Indoor Unit Styles

CN-REMO

On All Indoor Unit Styles

CN-REMO

On All Indoor Unit Styles

Supplied

LG Supplied Group Control Kit (PZCWRCG3)

CN-REMO

On All Indoor Unit Styles

LG Supplied

Cable Assembly

To CN_REMO

Connector on

IDU Control PCB

Yellow

Black

Red

Front

Back

Figure 76:Indoor Unit to Zone

Controller Connection.

Note:

Cable connected to Zone Controller is the factory default connection.

Note:

Cable connected to Zone Controller is the factory default connection.

Figure 77:Indoor Unit Group to Zone Controller Connections.

Summary of Contents for Multi V Water IV

Page 1: ...INSTALLATION MANUAL Variable Refrigerant Flow Water Source Units 6 0 to 48 0 Tons ...

Page 2: ...t development LG Electronics U S A Inc reserves the right to change specifications without notice LG Electronics U S A Inc This document as well as all reports illustrations data information and other materials are the property of LG Electronics U S A Inc PROPRIETARY DATA NOTICE This document as well as all reports illustrations data information and other materials herein are the property of LG El...

Page 3: ...Kits 41 Installation 43 Placement Considerations 43 Transporting Lifting the Water Source Unit 44 Water Source Unit Minimum Space Requirements 45 General Mounting Anchoring the Water Source Unit 47 Heat Recovery Box Minimum Space Requirements 48 Refrigerant piping Installation 49 Computer assisted Refrigerant Pipe Design 49 Pipe Sizing for ARWN Series Heat Pump Systems 59 Pipe Sizing for ARWB Seri...

Page 4: ...ning Engineers ASHRAE Standard 15 If the refrigerant leaks and safety limits are exceeded it could result in personal injuries or death from oxygen depletion Install the unit in a safe location Avoid areas where it can be stepped on or fallen into There is risk of unit damage physical injury or death Do not install remove or re install the unit by yourself end user Ask the dealer or a trained tech...

Page 5: ...ipment may cause the air conditioner to operate improperly The unit may also affect such equipment by creat ing electrical noise that disturbs medical treatment or image broadcasting Do not use the product for special purposes such as preserv ing foods works of art wine coolers or other precision air conditioning applications This equipment is designed to provide comfort cooling and heating There ...

Page 6: ...ons and inadequate grounding can cause acciden tal injury or death Always ground the unit following local state and NEC codes There is risk of fire electric shock and physical injury or death Properly size all circuit breakers or fuses There is risk of fire electric shock explosion physical injury or death Refer to local state and federal codes and use power wires of sufficient current capacity an...

Page 7: ... refrigerant charge and service valves closed Do not open service valves on water source units until all non condensable foreign sub stances are removed from the piping system and authorization to open valves is obtained from the LG authorized commissioning agent Do not run compressors with the service valves closed There is a risk of equipment damage refrigerant contamination refrigerant loss phy...

Page 8: ...Inverter Heat Recovery Family ARW Multi V Water IV Water Source Unit Refrigerant R410A 4 System Efficiency S Standard Efficiency 072 72 000 096 96 000 121 121 000 144 144 000 168 168 000 192 192 000 216 216 000 240 240 000 288 288 000 336 336 000 360 360 000 384 384 000 432 432 000 480 480 000 576 576 000 Heat Recovery Units HRU PRHR 02 2A Series Number 2A Series Number Number of Ports 02 Two Port...

Page 9: ...late Maximum Pressure Resistance psi 640 640 640 640 Flow at Rated Condition GPM 20 3 25 4 30 4 35 5 Range of Flow GPM 8 1 30 5 10 2 38 1 12 2 45 6 14 2 53 3 Total Heat of Rejection Btu h 94 400 126 700 157 400 190 100 Total Heat of Absorption Btu h 73 200 96 800 122 000 145 200 Pressure Drop ft wg 3 7 4 7 6 9 9 2 Δt4 F 9 3 10 0 10 4 10 7 Piping5 Liquid Line Connection in OD 3 8 Braze 3 8 Braze 1 ...

Page 10: ...Cables 2 x 18 AWG 2 x 18 AWG 2 x 18 AWG 2 x 18 AWG HeatRejectedtoEquipmentRoom Btu h 4 304 4 645 4 816 5 328 Heat Exchanger Stainless Steel Plate Maximum Pressure Resistance psi 640 640 640 640 Flow at Rated Condition GPM 25 4 20 3 30 4 20 3 35 5 20 3 35 5 35 5 Range of Flow GPM 18 3 68 6 20 3 76 1 22 3 83 7 28 4 106 5 Total Heat of Rejection Btu h 94 400 126 700 94 400 157 400 94 400 190 100 190 ...

Page 11: ...N144BAS4 x 2 ARWN144BAS4 x 3 Cooling Performance Nominal Cooling Capacity Btu h 1 360 000 432 000 Heating Performance Nominal Heating Capacity Btu h 1 405 000 486 000 Operating Range Entering Water Temperature Cooling F 2 23 113 23 113 Heating F 14 113 14 113 Compressor Inverter Quantity HSS DC Scroll x 3 HSS DC Scroll x 3 Oil Type PVE FVC68D PVE FVC68D Unit Data Refrigerant Type R410A R410A R410A...

Page 12: ... 23 113 23 113 23 113 23 113 23 113 23 113 Heating F 14 113 14 113 14 113 14 113 14 113 14 113 Compressor Inverter Quantity HSS DC Scroll x 1 HSS DC Scroll x 1 HSS DC Scroll x 1 HSS DC Scroll x 1 HSS DC Scroll x 1 HSS DC Scroll x 1 Oil Type PVE FVC68D PVE FVC68D PVE FVC68D PVE FVC68D PVE FVC68D PVE FVC68D Unit Data Refrigerant Type R410A R410A R410A R410A R410A R410A R410A Refrigerant Factory Char...

Page 13: ... 270 000 324 000 378 000 432 000 Operating Range Entering Water Temperature Cooling F 2 23 113 23 113 23 113 23 113 Heating F 23 113 23 113 23 113 23 113 Compressor Inverter Quantity HSS DC Scroll x 2 HSS DC Scroll x 2 HSS DC Scroll x 2 HSS DC Scroll x 2 Oil Type PVE FVC68D PVE FVC68D PVE FVC68D PVE FVC68D Unit Data Refrigerant Type R410A R410A R410A R410A R410ARefrigerant Factory Charge lbs 12 8 ...

Page 14: ...mbers ARWN144DAS4 x 2 ARWN192DAS4 x 1 ARWN192DAS4 x 3 Cooling Performance Nominal Cooling Capacity Btu h 1 480 000 576 000 Heating Performance Nominal Heating Capacity Btu h 1 540 000 648 000 Operating Range Entering Water Temperature Cooling F 2 23 113 23 113 Heating F 14 113 14 113 Compressor Inverter Quantity HSS DC Scroll x 3 HSS DC Scroll x 3 Oil Type PVE FVC68D PVE FVC68D Unit Data Refrigera...

Page 15: ...x 18 AWG Heat Rejected to Equipment Room Btu h 2 152 2 322 2 493 2 664 Heat Exchanger Stainless Steel Plate Maximum Pressure Resistance psi 640 640 640 640 Flow at Rated Condition GPM 20 3 25 4 30 4 35 5 Range of Flow GPM 8 1 30 5 10 2 38 1 12 2 45 6 14 2 53 3 Total Heat of Rejection Btu h 94 400 126 700 157 400 190 100 Total Heat of Absorption Btu h 73 200 96 800 122 000 145 200 Pressure Drop ft ...

Page 16: ...x 18 AWG 2 x 18 AWG 2 x 18 AWG Heat Rejected to Equipment Room Btu h 4 304 4 645 4 816 5 328 Heat Exchanger Stainless Steel Plate Maximum Pressure Resistance psi 640 640 640 640 Flow at Rated Condition GPM 25 4 20 3 30 4 20 3 35 5 20 3 35 5 35 5 Range of Flow GPM 18 3 68 6 20 3 76 1 22 3 83 7 28 4 106 5 Total Heat of Rejection Btu h 94 400 126 700 94 400 157 400 94 400 190 100 190 100 190 100 Tota...

Page 17: ...xchanger Stainless Steel Plate Maximum Pressure Resistance psi 640 640 Flow at Rated Condition GPM 35 5 35 5 20 3 35 5 35 5 35 5 Range of Flow GPM 36 5 137 0 42 6 159 8 Total Heat of Rejection Btu h 94 400 190 100 190 100 190 100 190 100 190 100 Total Heat of Absorption Btu h 73 200 145 200 145 200 145 200 145 200 145 200 Pressure Drop ft wg 3 7 9 2 9 2 9 2 9 2 9 2 Δt4 F 10 4 10 7 Piping5 Liquid L...

Page 18: ... AWG 2 x 18 AWG 2 x 18 AWG 2 x 18 AWG 2 x 18 AWG 2 x 18 AWG HeatRejectedtoEquipmentRoom Btu h 2 152 2 322 2 493 2 357 2 459 2 561 Heat Exchanger Stainless Steel Plate Maximum Pressure Resistance psi 640 640 640 640 640 640 Flow at Rated Condition GPM 20 3 25 4 30 4 35 5 45 7 50 7 Range of Flow GPM 8 1 30 5 10 2 38 1 12 2 45 6 14 2 53 3 18 3 68 6 20 3 76 1 Total Heat of Rejection Btu h 94 100 125 9...

Page 19: ... Rejected to Equipment Room Btu h 4 679 4952 4918 5122 Heat Exchanger Stainless Steel Plate Maximum Pressure Resistance psi 640 640 640 640 Flow at Rated Condition GPM 25 4 35 5 30 4 45 7 45 7 45 7 50 7 50 7 Range of Flow GPM 24 4 91 4 30 4 114 2 36 6 171 4 40 6 152 1 Total Heat of Rejection Btu h 125 900 190 100 157 900 221 100 221 100 x 2 253 500 x 2 Total Heat of Absorption Btu h 98 600 146 800...

Page 20: ...eat Exchanger Stainless Steel Plate Maximum Pressure Resistance psi 640 640 Flow at Rated Condition GPM 35 5 35 5 50 7 50 7 50 7 50 7 Range of Flow GPM 48 7 182 6 60 8 228 2 Total Heat of Rejection Btu h 190 100 190 100 253 500 253 500 253 500 253 500 Total Heat of Absorption Btu h 146 800 146 800 193 600 193 600 193 600 193 600 Pressure Drop ft wg 4 7 4 7 9 2 9 2 9 2 9 2 Δt4 F 10 4 10 0 Piping5 L...

Page 21: ... 24 5 16 Casing Galvanized steel plate Connecting Pipes To Indoor Units Liquid Pipe inches 3 8 Vapor Pipe inches 5 8 To Water Source Units Liquid inches 3 8 1 2 5 8 Low pressure Vapor inches 7 8 1 1 8 1 1 8 High pressure Vapor inches 3 4 7 8 7 8 Insulation Material Polyethylene Current Minimum Circuit Amps MCA 0 1 0 15 0 2 Maximum Fuse Amps MFA 15 Power Supply 1Ø 208 230V 60Hz Heat recovery units ...

Page 22: ...nbalance is 2 MCA Minimum Circuit Ampacity Maximum Overcurrent Protection MOCP is calculated as follows Largest motor FLA x 2 25 Sum of other motor FLA rounded down to the nearest standard fuse size Table 16 460V 60Hz 3 Phase Heat Pump Systems For component model nos see the specification tables on p 14 16 Voltage tolerance is 10 Maximum allowable voltage unbalance is 2 MCA Minimum Circuit Ampacit...

Page 23: ...ce is 10 Maximum allowable voltage unbalance is 2 MCA Minimum Circuit Ampacity Maximum Overcurrent Protection MOCP is calculated as follows Largest motor FLA x 2 25 Sum of other motor FLA rounded down to the nearest standard fuse size For component model nos see the specification tables on p 14 16 Voltage tolerance is 10 Maximum allowable voltage unbalance is 2 MCA Minimum Circuit Ampacity Maximum...

Page 24: ...icy 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 WATER SOURCE UNIT DIMENSIONS Single Frame Heat Pump and Heat Recovery ...

Page 25: ...us 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 Dual Frame Heat Pump and Heat Recovery WATER SOURCE UNIT DIMENSIONS ...

Page 26: ...icy 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 Triple Frame Heat Pump and Heat Recovery WATER SOURCE UNIT DIMENSIONS ...

Page 27: ...icy 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 Heat Recovery Unit PRHR022A DIMENSIONS ...

Page 28: ... 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 PRHR032A HEAT RECOVERY UNIT DIMENSIONS ...

Page 29: ...icy 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 PRHR042A HEAT RECOVERY UNIT DIMENSIONS ...

Page 30: ... Heat Pump Systems IDU HEX IDU IDU HEX IDU Flare Joint Flare Joint Flare Joint Flare Joint High Pressure Water Source Unit Accumulator Oil Separator Vapor Liquid Low Pressure Discharge Temp Suction Temp SC HEX Outlet Temp Remarks Liquid Temp INV Comp High Pressure Pressure Switch EEV Pressure Sensor Strainer Check Valve Service Valve 4 Way Valve Solenoid Valve Temperature Sensor High Pressure Liqu...

Page 31: ...ms M M S EEV EEV Sub Cooling HEX IDU HEX IDU IDU HEX IDU Flare Joint Flare Joint Flare Joint Flare Joint High Pressure Water Source Unit Accumulator Oil Separator Vapor Liquid Low Pressure Discharge Temp Suction Temp SC HEX Outlet Temp Liquid Temp INV Comp High Pressure Remarks Pressure Switch EEV Pressure Sensor Strainer Check Valve Service Valve 4 Way Valve Solenoid Valve Temperature Sensor S Hi...

Page 32: ...DU Flare Joint Flare Joint M EEV IDU HEX IDU Flare Joint Flare Joint M EEV IDU HEX IDU Flare Joint Flare Joint M EEV IDU HEX IDU Flare Joint Flare Joint M EEV Remarks Check Valve EEV Solenoid Valve Pressure Sensor Strainer Temperature Sensor SVC Valve Pressure Switch S Inverter Comp Accum Oil Seperator S S High Pressure Vapor Pipe Low Pressure Vapor Pipe Liquid Pipe Charging Port Comp Discharge Te...

Page 33: ...re Joint M EEV IDU HEX IDU Flare Joint Flare Joint M EEV IDU HEX IDU Flare Joint Flare Joint M EEV IDU HEX IDU Flare Joint Flare Joint M EEV s Remarks Check Valve EEV Solenoid Valve Pressure Sensor Strainer Temperature Sensor SVC Valve Pressure Switch S Inverter Comp Accum Oil Seperator S S Comp Discharge Temperature Sensor Liquid Pipe Temperature Sensor Suction Temperature Sensor Low Pressure Sen...

Page 34: ...sure Switch Sub Cooling Circuit Outlet Temperature Sensor Sub Cooling Outside EEV Outside Air Temperature Sensor Hot Gas Valve 4 Way Valve High Pressure Sensor Water Out Water In Water Outlet Temperature Sensor High Pressure Vapor Pipe Low Pressure Vapor Pipe Liquid Pipe Sub Cooling HEX s s s s s s s s s s s s HR unit Cooling ON Cooling ON Cooling ON Heating ON HighTemperature High Pressure Liquid...

Page 35: ... Flare Joint Flare Joint M EEV IDU HEX IDU Flare Joint Flare Joint M EEV IDU HEX IDU Flare Joint Flare Joint M EEV IDU HEX IDU Flare Joint Flare Joint M EEV s s s s s s s s s s s s s Remarks Check Valve EEV Solenoid Valve Pressure Sensor Strainer Temperature Sensor SVC Valve Pressure Switch S Inverter Comp Accum Oil Seperator Sub Cooling HEX S S Comp Discharge Temperature Sensor Liquid Pipe Temper...

Page 36: ... cooling and heating A Switch operation between cooling and heating B Decreases noise following subcooling operation between inlet of one indoor unit and outlet of another indoor unit during simultaneous operation C Prevents liquid from entering high pressure vapor valve and heat recovery unit during cooling mode D Controls pressure between the high and low pressure vapor pipes during simultaneous...

Page 37: ...5 8 Vapor AJR72963604 1 1 8 1 1 4 1 3 8 7 8 1 1 8 1 1 8 ARCNN31 Liquid AJR67613704 7 8 3 4 3 4 5 8 1 2 Vapor AJR54072908 1 1 2 1 5 8 1 3 8 1 3 8 1 1 8 Y branch Kit Qty Kit Reducer Type Reducer Diameters in 10 11 12 13 Length ARCNN21 4 Liquid 7 8 ID 3 8 OD 2 3 4 5 8 OD 1 2 ID 3 8 ID 4 3 8 Vapor 1 5 8 ID 1 1 2 ID 1 3 8 OD 5 1 8 1 1 8 OD 7 8 ID 3 4 ID 4 3 4 ARCNN31 4 Liquid 3 4 ID 5 8 ID 1 2 ID 4 3 8...

Page 38: ...RBLN03321 ARBLN07121 ARBLN14521 I D 5 8 I D 5 8 I D 5 8 16 1 4 15 3 8 I D 3 4 I D 3 4 I D 3 4 I D 3 4 O D 5 8 I D 1 2 I D 5 8 I D 5 8 I D 5 8 I D 1 2 I D 1 2 I D 1 2 I D 1 2 I D 1 2 I D 1 2 I D 1 2 I D 1 2 I D 1 2 I D 1 2 O D 1 2 O D 1 2 O D 1 2 I D 1 2 I D 1 2 I D 1 2 I D 1 2 I D 1 2 11 1 2 11 1 16 11 1 2 11 1 16 2 15 16 2 15 16 2 15 16 2 3 4 2 3 4 2 3 4 2 3 4 2 3 4 I D 5 8 I D 5 8 I D 1 I D 1 O ...

Page 39: ... 4 5 8 1 2 Vapor Line Low AJR67613703 1 1 2 1 5 8 1 3 8 1 3 8 1 1 8 Vapor Line High AJR72963604 1 3 8 1 1 2 1 5 8 1 1 2 1 3 8 1 1 8 1 3 8 1 1 8 7 8 Y branch Kit Qty Kit Reducer Type Reducer Diameters inches 10 11 12 13 Length ARCNB21 7 Liquid 7 8 ID 3 4 OD 2 3 4 5 8 OD 1 2 ID 3 8 ID 4 3 8 Vapor Line Low 1 5 8 ID 1 1 2 ID 1 3 8 OD 5 1 8 1 1 8 OD 7 8 ID 3 4 ID 4 3 4 Vapor Line High 1 OD 7 8 ID 3 1 4...

Page 40: ...2 I D 1 2 O D 1 2 I D 1 2 I D 1 2 I D 1 2 I D 1 2 11 1 2 11 1 16 11 1 2 11 1 16 2 15 16 2 15 16 2 15 16 2 15 16 2 3 4 2 3 4 2 3 4 2 3 4 2 3 4 2 3 4 2 3 4 2 3 4 2 3 4 I D 5 8 I D 5 8 I D 1 I D 1 I D 1 I D 1 I D 1 O D 1 O D 1 I D 1 I D 1 I D 1 O D 1 3 3 16 4 3 8 4 3 8 4 3 8 4 3 8 4 3 8 4 3 8 4 3 8 13 1 16 12 5 8 18 9 16 20 3 8 4 15 16 14 5 8 15 1 2 3 5 16 3 5 16 5 1 8 I D 5 8 I D 1 5 8 I D 1 5 8 I D...

Page 41: ...acity ARBL054 4 branch 72 000 connected capacity 54 300 per port ARBL057 7 branch 75 100 connected capacity 54 300 per port ARBL1010 10 branch 172 200 connected capacity 76 300 per port ARBL104 4 branch 305 200 connected capacity 76 300 per port ARBL107 7 branch 534 000 connected capacity 76 300 per port ARBL2010 10 branch 560 000 connected capacity 76 300 per port Table 33 Nominal Capacity Range ...

Page 42: ...5 8 I D 1 2 I D 3 4 I D 5 8 I D 7 8 I D 1 1 8 I D 1 4 3 4 4 3 4 4 3 4 4 3 4 4 3 4 4 3 4 4 3 4 4 3 4 4 3 4 4 3 4 I D 5 8 I D 1 2 I D 5 8 I D 1 2 I D 5 8 I D 3 4 4 3 4 I D 1 4 I D 3 8 I D 3 8 I D 1 2 6 5 16 22 7 8 I D 3 4 I D 5 8 ID15 88 5 8 ID12 7 1 2 I D 5 8 I D 1 2 I D 7 8 I D 1 1 8 I D 1 27 9 16 4 3 4 I D 1 4 I D 3 8 I D 3 8 I D 1 4 I D 3 8 I D 1 2 I D 5 8 I D 1 2 4 3 4 28 3 8 I D 1 4 I D 3 8 I ...

Page 43: ...o the installation space requirements The mechanical room floor should be waterproof Each water source unit requires a condensate drain to be piped to the nearest floor drain Periodic flushing of the water heat exchanger is required and a floor drain installed near the equipment will help facilitate this maintenance The water source unit should be installed with a closed loop water system If an op...

Page 44: ...rting the weight of the water source unit frame Wear protective gloves when handing the moving equipment and frame Some products include polypropylene bands around the unit for packaging Do not use polypropylene bands to lift the unit Tear apart and throw away plastic packaging bags so that children can not play with them and risk suffocation and death Lift the water source unit from the base at s...

Page 45: ...ilable after considering the space taken by the piping Note Figure 11 Single Frame Installation Figure 12 Dual Frame Installation Dual Frame Installation Install a single frame system with the service area requirements shown in Figure 12 If local codes require additional clearance area comply with local codes Job site conditions may require routing refrigerant piping condensate pipe and or electri...

Page 46: ... water piping passes along the side of a frame ensure the indicated space is available after considering the space taken by the piping Note Stacked Frame Installation Install a single frame system with the service area requirements shown in Figure 14 If local codes require additional clearance area comply with local codes Job site conditions may require routing refrigerant piping condensate pipe a...

Page 47: ...ut 3 3 Spring Washer Unit Mounting Foot Anti vibration Material Four Bolts Required H Beam Concrete Base 4 Three Threads Note Figure 16 Close up of Anchor Bolts When building a base support for the water source unit ensure that the floor surface location has enough strength to support the weight of the unit enough space for pipes and wiring and sufficient slope for proper drainage between the unit...

Page 48: ...ns of the reducer Note 5 4 6 17 7 8 6 7 8 6 7 8 8 5 8 7 3 16 16 1 2 2 7 16 5 7 16 4 7 8 5 1 16 1 3 16 2 3 8 11 13 16 more 11 13 16 more 11 13 16 more 17 3 4 more Servicing space Servicing space Servicing space Servicing space 3 15 16 more Servicing space 3 15 16 more Servicing space Tag No Part Name Connection Size in Type PRHR022A PRHR032A 042A 1 Low pressure vapor pipe connection port 7 8 Braze ...

Page 49: ...l piping application by field changes to pipe equivalent lengths Always check the LATS report actual pipe layout versus pipe limits The user may want to increase pipe lengths when design conditions are approaching the Standard Application Piping Rule limits to force the LATS program to engineer the system using the Conditional Application Pipe Rules This will increase the diameter of the main and ...

Page 50: ...heat recovery units ARWB Series only 49 feet Between two indoor units connected to separate Y branch connected heat recovery units ARWB Series only 131 feet Table 40 Equivalent Piping Length in Feet for Typical Refrigeration Elbows Y Branches Headers and Heat Recovery Units Component Elbow Size Inches 1 4 3 8 1 2 5 8 3 4 7 8 1 1 1 8 1 1 4 1 3 8 1 1 2 1 5 8 1 3 4 2 1 8 Elbow ft 0 5 0 6 0 7 0 8 1 2 ...

Page 51: ...g products ACR rated tub ing is the only type that ships with yellow caps Approved tubing for use with Multi V products will be marked R410 RATED along the length of the tube Drawn temper rigid ACR copper tubing is available in sizes 3 8 through 2 1 8 inches ASTM B 280 clean dry and capped Annealed temper soft ACR copper tubing is available in sizes 1 4 through 2 1 8 inches ASTM B 280 clean dry an...

Page 52: ...1621 ARBL054 ARBL057 ARBL1010 ARCNN31 ARBLN03321 ARCNB31 ARBLB03321 ARBL104 ARBL107 ARBL2010 ARBLN07121 ARBLB07121 ARBLN14521 ARBLB14521 Table 44 Y Branch and Header Kits If the diameter of the branch pipe segments differ from that of the designated refrigerant piping trim the to the desired section using a pipe cutter and then use an adapter to connect Always follow manufacturer s guidelines on r...

Page 53: ...its that are far apart Y branches may be more economical See Header Kits on page 41 for specifications and capacities Y branches can be installed between the header and the water source unit but a Y branch cannot be installed between a header and an indoor unit Headers must be installed in a horizontal and level position with the distribution ports of the fitting in the same horizontal plane as th...

Page 54: ...e most common method is the inclusion of expansion Loop or U bends as shown in Figure 28 Each segment of pipe has a natural fixed point where no movement occurs This fixed point is located at the center point of the segment assuming the entire pipe is insulated in a similar fashion The natural fixed point of the pipe segment is typically where the expansion Loop or U bend should be Linear pipe exp...

Page 55: ... 1 44 1 56 1 68 1 80 1 92 2 04 2 16 2 28 2 40 2 52 2 64 2 59 2 76 3 12 3 36 3 48 3 60 260 1 04 1 04 1 30 1 56 1 69 1 82 1 95 2 08 2 21 2 34 2 47 2 60 2 73 2 86 2 81 2 99 3 38 3 64 3 77 3 90 280 1 12 1 12 1 40 1 68 1 82 1 96 2 10 2 24 2 38 2 52 2 66 2 80 2 94 3 08 3 02 3 22 3 64 3 92 4 06 4 20 300 1 20 1 20 1 50 1 80 1 95 2 10 2 25 2 40 2 55 2 70 2 85 3 00 3 15 3 30 3 24 3 45 3 90 4 20 4 35 4 50 32...

Page 56: ...1 11 12 14 16 18 20 22 L2 66 77 86 101 115 127 138 2 R1 12 14 16 19 21 23 25 L2 77 89 99 117 133 147 160 2 1 2 R1 14 16 18 21 24 26 29 L2 86 99 111 131 149 165 179 3 R1 15 17 19 23 26 29 31 L2 94 109 122 143 163 180 196 3 1 2 R1 16 19 21 25 28 31 34 L2 102 117 131 155 176 195 212 4 R1 17 20 22 26 30 33 36 L2 109 126 140 166 188 208 226 1 R Center line Length of Pipe 2 L Center line Minimum Radius ...

Page 57: ...or part should any field supplied accessory fail in any way that causes product failure Using Elbows Field supplied elbows are allowed as long as they are designed for use with R410A refrigerant The designer and installer however should be cautious with the quantity and size of fittings used and must account for the additional pressure losses in equivalent pipe length calculation for each branch T...

Page 58: ...tion Figure 32 Pipe Support at Indoor Unit Figure 33 Pipe Support at Y branch Fitting Max 12 12 19 A B A B 12 19 Max 12 Max 12 Max 12 Max 12 Max 12 Figure 34 Pipe Support at Header Fitting A properly installed pipe system will have sufficient support to prevent pipe sagging during the life of the system As necessary place supports closer for segments where potential sagging could occur Maximum spa...

Page 59: ...AS4 3 4 1 3 8 7 8 1 5 8 Note Larger capacity water source units must be the master in a multi frame system Master water source unit capacity must be greater than or equal to the Slave 1 water source unit capacity and where applicable Slave 1 water source unit capacity must be greater than or equal to Slave 2 water source unit capacity Be sure to insulate all refrigerant system piping and piping co...

Page 60: ...r units connected WSU Water Source Unit IDU Indoor units A Main Pipe from Water Source Unit to First Y branch B Heat Recovery Unit to Heat Recovery Unit Y branch to Heat Recovery Unit Heat Recovery Unit to Header or Y branch to Y branch C Heat Recovery Unit or Header to Indoor Unit Table 48 Main Pipe A Diameter from Water source Unit to First Y branch Header Branch Table 49 Refrigerant Pipe B Diam...

Page 61: ...3 feet Connection piping from branch to branch cannot exceed the main pipe diameter A used by the water source unit Y branches and other header branches cannot be installed downstream of the initial header branch Install the header branch so that the pipe distances between the connected indoor units are minimized Large differences in pipe distances can cause indoor unit performances to fluctuate A...

Page 62: ... Slave 1 Master To Heat Recovery Units A1 A2 ARCNB21 Kit Three 3 Y branches for liquid pipe high pressure vapor pipe and low pressure vapor pipe B A3 C Main Pipe Sized by LATS Liquid Pipe Low Pressure Vapor ARCNB21 and ARCNB31 Multi Frame WSU Heat Recovery Systems Y Branch Connector Kits Liquid Pipe Low Pressure Vapor Pipe Represents THREE pipes ARCNB31 Kit Three 3 Y branches for liquid pipe high ...

Page 63: ...1 3 8 34 3 4 1 5 8 1 3 8 7 8 1 5 8 1 3 8 36 3 4 1 5 8 1 3 8 7 8 1 5 8 1 3 8 40 3 4 1 5 8 1 3 8 7 8 1 5 8 1 3 8 48 3 4 1 5 8 1 3 8 7 8 1 5 8 1 3 8 Pipe Sizing When Installing Heat Recovery Units Table 53 Main Pipe A Diameter from WSU to First Y branch Note Connection piping from branch to branch cannot exceed main pipe diameter A used by WSU Install the header branches or heat recovery units so tha...

Page 64: ...y unit should be calculated by two Length of pipe C from each indoor unit to the closest Y branch header or heat recovery unit 131 feet 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 Table 56 Pipe Capabilities Indoor Unit Capacity1 Liquid pipe in OD Vapor pipe in OD 19 100 1 4 1 2 54 600 3 8 5 8 76 400...

Page 65: ... Cliffs NJ All rights reserved LG is a registered trademark of LG Corp Pipe Layout REFRIGERANT PIPING INSTALLATION Acceptable Layout Examples Unacceptable Piping System Layouts A second branch cannot be installed after a header Header First Second First Second First Main Pipe Distribution Second Main Pipe Distribution First Second Third Main Pipe Distribution ...

Page 66: ...the first outdoor unit Y branch to the piping connection at the farthest outdoor unit must not exceed thirty three 33 feet To IDUs HRUs 33 Feet Max 3 Elevation difference between water source units The elevation difference between the highest and lowest elevation water source unit must not exceed sixteen 16 feet Suction Liquid To IDUs Elevation Heat Pump Low Pressure Vapor Liquid To IDUs Elevation...

Page 67: ...h toward an outdoor unit or another outdoor unit Y branch The inverted trap should be installed close to the outdoor unit Y branch no more than 6 6 away and before the pipe toward the outdoor unit turns downward Oil Trap Elevation Elevation Elevation Oil Trap To IDUs HRUs To IDUs HRUs Oil Trap Oil Trap Oil Trap Figure 44 Inverted Trap Applications Pipe Slope Horizontal pipe slope should be level o...

Page 68: ...ips with a factory charge of refrigerant When connecting and brazing the vapor line using a wet rag or cooling gel product to protect the service and Schrader valves from excessive heat After connections are complete verify that the service ports and caps are securely tightened to pre vent leaking refrigerant gas Always take extreme caution to prevent refrigerant gas R410A from leaking during use ...

Page 69: ...of the main causes of refrigerant leaks is defective flared connections Create flared connections using the procedure below 1 Cut the pipe to length Measure the distance between the indoor unit and the water source unit Cut the pipes a little longer than measured distance 2A Remove the burrs Completely remove all burrs from pipe ends When removing burrs point the end of the copper pipe down to avo...

Page 70: ...m 1 2 thick and thickness may need to be increased based on ambient conditions and local codes All refrigerant piping including Y branch and Header connections field provided isolation ball valves service valves and elbows must be completely insulated using closed cell pipe insulation All insulation joints must be glued with no air gaps Insulation material must fit snugly against the refrigeration...

Page 71: ...2 An area where there is an elevated humidity level 5 Additional Insulation for Indoor Units May be Required in Humid Environments The air conditioner factory insulation has been tested according to ISO Conditions with Mist and it satisfies the requirements If the system has been operating for a long time in a high humidity environment dew point temperature more than 73 F condensate is likely to f...

Page 72: ...r Cap included with Header Kit Additional Insulation for Y Branches and Headers May be Required in Humid Environments If the system has been operating for a long time in a high humidity environment dew point temperature more than 73 F condensate is likely to form If this happens install 3 8 inch thick ethylene propylene diene methylene EPDM insulation that is plenum rated with a heat resistance fa...

Page 73: ...i for a period of 24 hours Pressurize the liquid low pressure vapor and high pressure vapor heat recovery systems only concurrently Heat Pump Pressure Test During pressurization the nitrogen gas cylinder must be positioned vertically to prevent the nitrogen from entering the refrigeration system in its liquid state Do not position the nitrogen cylinder on its side If the ambient temperature change...

Page 74: ...e difference Correction formula Temperature when pressure was applied Temperature when pressure drop is checked x 0 01 Example When pressure 550 psig was applied ambient temperature was 80 6 F 24 hours later when pressure drop 540 psi is checked ambient temperature is 68 F Thus 80 6 68 x 0 01 0 126 In this case the pressure drop of 0 126 is due to temperature difference therefore there is no leak ...

Page 75: ... cooling tower dry cooler or geothermal well while at the low end of the temperature range an auxiliary heat source like a boiler solar panel or geothermal well adds heat Piping pumps and accessories must be sized to provide adequate water flow to the water source unit based on nominal flow rates listed for each model number Design Schematic Multi V Water IV Water Source Units have factory install...

Page 76: ...eat is absorbed from the geothermal system Multi V IV WSUs have factory installed stainless steel plate heat exchangers To protect these heat exchangers it is recommended to use closed geothermal water loops Should open geothermal systems be used an intermediate heat exchanger should be installed to isolate the water source unit from contaminants in the water system Open geothermal loops may conta...

Page 77: ...g valve circuit setter or flow control valve to regulate proper water flow to each WSU Dielectric pipe unions to prevent the possibility of galvanic corrosion Pressure gauges at inlet and outlet Thermometers at inlet and outlet Flexible connectors at inlet and outlet Shutoff valves at the inlet and outlet to permit service of the WSU Condensate drain trap per local code Service port with hose conn...

Page 78: ...m 2 Cross index the cooling or heating row with the percentage by weight column to find the cooling or heating correction factor 3 Multiply the WSU nominal capacity by the cooling or heating correction factor The result is the net capacity due to the effect of antifreeze WSU Net Pressure Drop due to Antifreeze 1 Refer to Table 60 and locate the type of antifreeze used and the percentage by weight ...

Page 79: ...ow 30 Reference Item Iron mg Fe ℓ Below 1 0 Below 0 3 Copper mg Cu ℓ Below 1 0 Below 0 1 Sulfate ion mg SO42 ℓ Must not be detected Must not be detected Ammonium ion mg NH4 ℓ Below 0 3 Below 0 1 Residual chlorine mg Cl ℓ Below 0 25 Below 0 3 Free carbon dioxide mg CO2 ℓ Below 0 4 Below 4 0 Stability index 1 The mark for corrosion and scale means that there is a possibility of occurrence Use inhibi...

Page 80: ...the first protection device when water flow is not supplied If the required water flow is not present after installing the flow switch the water source unit displays error code CH24 and stops operating When setting the flow switch set to 50 of the nominal flow rate of the WSU model Refer to the General Data Tables beginning on page 9 for the nominal flow rate This flow switch setting will satisfy ...

Page 81: ...en the flow switch cover and check the wiring diagrams before connecting the wires Wiring methods can vary by flow switch manufacturer If necessary and after consulting with an LG representative use the flow rate detection contact to adjust flow rate to within the minimum range Picture 4 Minimum flow rate range of this product is 50 Adjust the flow switch to the contact point when the flow rate re...

Page 82: ... shown in Figure 66 Remove water source unit power set the PCB DIP switches as shown in Figure 67 then reapply power Field supplied solenoid valve must be a normally closed type CN_26 CN_24 CN_22 INTERNET MAIN PCB C_Box DDC BMS Flow Switch Solenoid Valve Water Out Water In CN_26 CN_24 CN_22 MAIN PCB C_Box Flow Switch Solenoid Valve Water Out Water In 1 L 2 N 3 L 4 N 5 A 5 B 1 L 2 N 3 L 4 N 5 A 5 B...

Page 83: ...to the modulating valve 10 volts is full open valve position As building load drops and compressor slows the signal reduces to close the valve 1 volt is the minimum flow position of 40 of rated flow Zero volts is valve fully closed Figure 68 Variable Water Flow Valve Control Kit Variable Water Flow Valve Control Kit Installation Install the kit as follows WARNING High voltages capable of causing d...

Page 84: ...the same conduit Note Separating Power Wires and Communication Cables General Information All power wiring and communication cable installation must be performed by trained service providers working in accordance with local state and NEC regulations related to electrical equipment and wiring and following the instructions in this manual In case of conflict between local state or NEC regulations an...

Page 85: ... the Power Wiring WSU input power is capable of causing severe injury or death Do not touch bare input power wire or terminals Ensure input power is OFF before connecting power wiring to the WSU If power wires are not properly terminated and firmly attached there is risk of fire electric shock and physical injury or death Refer to the installation manual for each model of IDU for details of connec...

Page 86: ... be grounded only to the water source unit frame Tie the shield of each cable segment together using a wire nut at each indoor unit Never ground the shield of the communications cable to the indoor unit frame or any other ground point Position the WSU communication cables away from power wiring Refer to minimum spacing requirements in Table 62 Never use a common multiple conductor communications c...

Page 87: ...ler option Pull Box Installer option Pull Box Installer option Power Cable Communication Cable CEN B CEN A AC Smart or other Central Controller Communications Between WSUs Master WSU CEN B SODU B Slave 1 WSU CEN A IDU A IDU B SODUA CEN B SODU B CEN A IDU A IDU B SODUA CEN B SODU B Slave 2 WSU CEN A IDU A IDU B SODUA 3 4 3 4 Communications Between IDUs and Master WSU Master WSU Indoor Units CEN B S...

Page 88: ... Pull Box Installer option Pull Box Installer option Pull Box Installer option Power Cable Communication Cable CEN B CEN A AC Smart or other Central Controller Communications Between WSUs Master WSU CEN B SODU B Slave 1 WSU CEN A IDU A IDU B SODUA CEN B SODU B CEN A IDU A IDU B SODUA CEN B SODU B Slave 2 WSU CEN A IDU A IDU B SODUA 3 4 3 4 3 4 Communications Between IDUs and Master WSU Master WSU ...

Page 89: ...ed shielded and grounded at the water source unit s only Maintain polarity throughout the communication network Figure 74 Multi V Water IV ARWB Series Heat Recovery System Daisy Chain Communications Cable Wiring IDU Communication Cable ELECTRICAL CONNECTIONS CEN B IDU A IDU B SODUA Connect 2 Wire Communication Cable to IDU B and IDU A Terminals in WSU CEN B IDU A IDU B SODUA Connect 2 Wire Communi...

Page 90: ...n be connected to one port of a heat recovery unit and can be controlled as a group Figure 75 shows a typical ap plication with both zone controlled and individually controlled IDUs The WSU to IDU communications bus must be connected in a daisy chain configuration from IDU to IDU For zone control of multiple IDUs the control communications cable from the wall controller must connect first to the m...

Page 91: ...oup except for the last indoor unit Always use an LG provided group control communications cable Group Control Kit sold separately between the indoor unit and the wall mounted zone controller NEVER splice or cut the communications cable Do not short en the cable or extend cable length with field provided cable Before running cable decide which indoor unit will be the mas ter indoor unit The zone c...

Page 92: ... SW01 is set to OFF To enable option configuration set switch 5 to ON Use the forward back confirm and cancel buttons on the main circuit board to select and set system options The display above the buttons shows the selected function and its options Use forward and back to scroll to the desired function and press confirm to select it Then use forward and back to scroll between the options for tha...

Page 93: ...del 2A ONLY Must be ON System will operate WITH Gen 4 features Gen 4 Gen 4 ONLY Model 2A ONLY OFF System will operate but WITHOUT Gen 4 features Gen 4 Gen 4 ONLY Any combination of Models 0A 1A 2A Must be OFF factory default Does NOT include Gen 4 features System will not operate if DIP Switch No 3 is ON and an error code will be generated Gen 4 Any combination of Gen 2 and Gen 4 Model 2A ONLY Mus...

Page 94: ...4 See Description Total capacity in HP of all WSUs Refer to Table 15 through Table 18 for HP values 5 2 or 3 2 Heat Pump 3 Heat Recovery 6 22 or 46 22 208 230V system 46 460V system 7 1 2 or 3 Model type 1 General 2 Tropical 3 Factory Table 66 Setup Code Display Sequence During the pre commissioning process for Gen 4 systems do not change any DIP switch settings except for SW01 switch number 3 whi...

Page 95: ...iting for another command 12 Upon successful completion of the auto address procedure record the system address assigned to each indoor unit by the auto address procedure in the column provided on the Pre commissioning Device Configuration Worksheet 13 After recording the system addresses assigned to each device open the water source unit disconnect Remove the water source unit to indoor unit comm...

Page 96: ...s Address number of each indoor unit is shown on the wired remote controller display or on the indoor unit display The address number will disappear after pressing the on off button on the remote controller If 01 02 08 is seen that means that eight 8 indoor units have been successfully auto addressed Initiate auto addressing procedure Wait 45 seconds Power On Press hold the red Auto Address Button...

Page 97: ...r three 3 to seven 7 minutes the display will flash a number for about ten 10 seconds indicating how many indoor units the system successfully communicated with 5 This number should match the known number of installed indoor units if the auto addressing procedure was successful 6 Upon completion of the auto addressing routine the display will be blank and the system will be in standby waiting for ...

Page 98: ...ter and the slave identity assignment to each indoor unit in the group on the Pre commissioning Device Configuration Worksheet 3 Termination Procedure Starting with the Master unit plug in the male end of the pigtail cable into the CN REMO socket At the last Slave indoor unit in the group a pigtail cable is not required Plug the male end of the extension cable coming from the previous indoor unit ...

Page 99: ...em If there are more than 16 indoor units on a system multiple Group Numbers may be necessary If the building owner wants to know which indoor units are on each floor assign a different group number for each floor If there are more than 16 indoor units on a floor multiple Group Numbers may be necessary Member Number Can be assigned as desired or for example can follow the room layout on each floor...

Page 100: ...he setup function 02 icons are different for each controller Refer to the controller user s manual for more information Type in the Central Control address designated for the Master indoor unit 7 Disable power to the Master indoor unit Do not restore Power to the Master indoor unit at this time It will be restored in step 18 8 If the zone controller and associated communications cable has already ...

Page 101: ... sensor mounted in the zone controller then control based on the temperature reading using the sensor that is farthest from set point Indoor Unit Temperature Sensing Strategy Air Balance Conduct an Air Balance for Ducted Indoor Units For each ducted model indoor unit confirm that the Test and Balance contractor adjusted the fan speed setting values Recorded the actual fan setting value used to del...

Page 102: ...ss to the heat recovery unit that has the largest capacity indoor unit connected to port number 1 If the capacity of all indoor units connected to port number 1 of each heat recovery unit is the same assign address 0 to the heat recovery unit farthest away from the outdoor unit Assign the next address to the next farthest away and so on until all heat recovery units have an address The heat recove...

Page 103: ...nit for three ports connected as shown in the table above To use a PRHR041A for two ports cap off the third and fourth ports and set the dip switches on the heat recovery unit for two ports connected as shown in the table above Any unused port must be sealed with a brazed copper cap not with a plastic cap PRHR031A Three 3 ports PRHR021A Two 2 ports PRHR041A Four 4 ports 1 2 3 1 2 1 3 2 4 ON OFF 1 ...

Page 104: ... No 1 2 Valve No 3 4 Valve Control No 3 4 Valve Control Dip Switch Setting No 2 3 Valve Control No 1 2 Valve Control No Valve Group Control Example Indoor unit Indoor unit Large capacity indoor unit Indoor unit Indoor unit Large capacity indoor unit Indoor unit Indoor unit Large capacity indoor unit Large capacity indoor unit Large capacity indoor unit Indoor unit Indoor unit Indoor unit Indoor un...

Page 105: ...address by one 1 2 Prerequisite for manual valve addressing The central control address of each indoor unit must be preset at its wired remote controller Dip Switch No Setup No 1 Manual addressing valve No 1 No 2 Manual addressing valve No 2 No 3 Manual addressing valve No 3 No 4 Manual addressing valve No 4 SW03M Increases the ten 10 digit of the valve address SW04M Increases the valve address by...

Page 106: ...it of the valve address SW04M Increases the valve address by one 1 SW05M Rotary switch 2 Prerequisite for manual valve addressing The central control address of each indoor unit must be preset at its wired remote controller Dip Switch No Setup No 1 Manual addressing valve No 1 No 2 Manual addressing valve No 2 No 3 Manual addressing valve No 3 No 4 Manual addressing valve No 4 SW03M Increases the ...

Page 107: ...isfied with the micron gauge reading Note The water source unit may be put in vacuum mode Generally using the vacuum mode feature does assist with the vacuum process and is not necessary if a vacuum pump is connected to all charging ports at the water source unit simultaneously as suggested herein See the Technical Service Manual for this product for more information There is no danger in leaving ...

Page 108: ...ons After maintaining the system to 500 microns for more than one 1 hour confirm that pressure has risen If not there may be moisture or a leak somewhere in the refrigerant piping system 2 If the system has been evacuated for more than two 2 hours and it is suspected that moisture may be present rainwater may have en tered the piping if installation look a long time to complete or if work occurred...

Page 109: ...stricted water flow may impact the ability of the Commissioning Agent to successfully complete system com missioning It is best if the water flow balancing is completed prior to initiating a request for a Commissioning Agent Upon completion of the waterside balancing the report should provide the maximum flow rate GPM at the water source unit The Commissioning Agent is not responsible for setting ...

Page 110: ...lity of the commissioning agent to successfully complete system commissioning Upon completion of the air balance the report should include the adjusted indoor unit s fan speed i e fan setting value set by the Test and Balance technician to deliver cataloged air volume CFM at jobsite static pressure conditions Initiate a Request for System Commissioning Contact your LG Applied Representative s Proj...

Page 111: ... acid citric acid oxalic acid acetate acid phosphoric acid Make sure the cleaning solution used does not include chemicals such as hydrochloric acid sulfuric acid nitric acid or calcium chloride that are corrosive to 316 stainless steel or ACR copper Isolate the heat exchanger from the pipe system by closing the inlet outlet ball valves and the drain pipe valve Connect a hose to the service port f...

Page 112: ...lica mg SiO2 ℓ Below 30 Below 30 Reference Item Closed Type System Effect Circulating Water Supplemented Water Corrosion1 Scale1 Iron mg Fe ℓ Below 1 0 Below 0 3 Copper mg Cu ℓ Below 1 0 Below 0 1 Sulfate ion mg SO42 ℓ Must not be detected Must not be detected Ammonium ion mg NH4 ℓ Below 0 3 Below 0 1 Residual chlorine mg Cl ℓ Below 0 25 Below 0 3 Free carbon dioxide mg CO2 ℓ Below 0 4 Below 4 0 S...

Page 113: ...e chemical detergent as recommended by the chemical supplier Note that cleaning the heat exchanger is easier at the initial stages and becomes difficult after scaling has accumulated In areas where the water quality is poor cleaning is required more often Because chemical detergent has a strong acid content the system must be flushed thoroughly with water after cleaning To verify the system has be...

Page 114: ...ror code display Operating mode indicator Target high pressure High version Target low pressure High version PCB printed circuit board version Software version Installer name Model number Site name Total number of connected IDUs Communication indicator IDU capacity IDU operating mode IDU fan speed IDU EEV position IDU room temperature IDU inlet pipe temperature IDU outlet pipe temperature IDU erro...

Page 115: ...anged to show Inverter Compressor Amps Volts Power Hz Inverter control board fan Hz Figure 90 LGMV Control Indoor Units Screen LG MONITORING VIEW LGMV DIAGNOSTIC SOFTWARE Error Codes LGMV software helps the service technician or commissioning agent to troubleshoot system operation issues by displaying error codes These error codes are displayed on the upper right area of the LGMV main screen For a...

Page 116: ...ult component operating parameters are stored For detailed information on how to troubleshoot each error see the Water Source Unit Service Manual on www lghvac com Error Code Description Possible Cause 0 1 Indoor unit air temperature sensor error Indoor unit air temperature sensor disconnection or short circuit 0 2 Inlet pipe temperature sensor of indoor unit Indoor unit pipe inlet temperature sen...

Page 117: ...ficient or Master WSU flow switch failure 2 4 2 High pressure switch Compressor maintenance by Slave 1 WSU high pressure switch Flow rate insufficient or Slave 1 WSU flow switch failure 2 4 3 High pressure switch Compressor maintenance by Master WSU high pressure switch Flow rate insufficient or Slave 2 WSU flow switch failure 2 5 1 Master WSU input power voltage level high low Master WSU input po...

Page 118: ...ressure too low Compressor turned off due to Slave 2 WSU low pressure too low 3 6 1 Master WSU low pressure ratio Master WSU pressure ratio is under limit 3 6 2 Slave 1 WSU low pressure ratio Slave 1 WSU pressure ratio is under limit 3 6 3 Slave 2 WSU low pressure ratio Slave 2 WSU pressure ratio is under limit 4 0 1 Master WSU inverter compressor CT sensor error Master WSU inverter compressor cur...

Page 119: ...ure sensor error Slave 2 WSU IPM temperature sensor disconnection or short circuit 5 0 1 Master WSU input power phase loss Master WSU has lost one of the phases of the three phase power input 5 0 2 Slave 1 WSU input power phase loss Slave 1 WSU has lost one of the phases of the three phase power input 5 0 3 Slave 2 WSU input power phase loss Slave 2 WSU has lost one of the phases of the three phas...

Page 120: ...Slave 2 WSU EEPROM error Communication error between Slave 2 WSU MICOM and EEPROM or EEPROM failure 8 8 1 Master WSU PFC PCB EEPROM error Communication error between Master WSU master PFC and EEPROM or EEPROM failure 8 8 2 Slave 1 WSU PFC PCB EEPROM error Communication error between Slave 1 WSU master PFC and EEPROM or EEPROM failure 8 8 3 Slave 2 WSU PFC PCB EEPROM error Communication error betwe...

Page 121: ... communication signal is not received from the external board 1 4 5 2 Slave 1 WSU main board to external board communication error Slave 1 main board communication signal is not received from the external board 1 4 5 3 Slave 2 WSU main board to external board communication error Slave 2 main board communication signal is not received from the external board 1 5 1 1 WSU 4 way valve switch failure W...

Page 122: ...ode Description Possible Cause 2 0 1 C1 C161 HRU liquid pipe temperature sensor error Sensor open short Defective temperature sensor connection Defective temperature sensor Defective WSU PCB 2 0 2 C1 C161 HRU sub cooling inlet pipe temperature sensor error Sensor open short Defective temperature sensor connection Defective temperature sensor Defective WSU PCB 2 0 3 C1 C161 HRU sub cooling discharg...

Page 123: ...missioning Device ConĮguraƟon Worksheet Project Name Building ID Date AC Smart StaƟĐ IP address System ID Page Mech Contractor Company Name MEP Project Mngr Name Pre Com Tech Name Ph email Ph Email IDUs Unit Tag Building Floor Room ID Type Model Serial System Address Central Control Address Group member ID or N A if not in a group Group FuncƟon M Master S Slave Sensor Strategy RA ZC Both Adjusted ...

Page 124: ...ED CHANGES MUST BE FORWARDED TO THE DESIGN ENGINEER SO THAT THEY CAN INPUT THE CHANGES INTO LATS and RE ISSUE A NEW LATS MULTI V PIPING TREE DIAGRAM Installer must receive change authorization from the design engineer because any change made requires the review of the entire tree diagram and verification that the change did not impact the size of piping segments in other parts of the system All pi...

Page 125: ...iption Check Appropriate crimping tool used to attach ring or spade terminals at all power wiring and control cable terminations Verify all ring and spade terminals are copper bearing in all communications daisy chains Galvanized or nickel plated steel connectors were not used Correct input voltage 208 230V or 460V as specified on water source unit nameplate was connected to proper power input ter...

Page 126: ...stant 550 psig pressure for a minimum of 24 hours with all isolation valves open A triple system evacuation has been performed Micron gauge reading held at a minimum of 500 for 24 hours with all isolation valves open and without the vacuum pump connected Power was energized to the water source unit at ______________ time on __________day to power the compressor crankcase heater s Must be at least ...

Page 127: ...e fitter s pipe changes and field notes 3 A verified copy of the As Built LATS Multi V Project file mtv that includes all changes noted by the pipe fitter s in Number 2 The tree diagram notes should include changes to the line lengths used for each liquid line segment 4 A copy of a completed and verified Installation Checklist for the water source unit indoor units ERVs Air Cleaners and Con trol D...

Page 128: ... 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 128 PRE COMMISSIONING CHECKLIST Page 3 Notes for the Commissioning Agent ...

Page 129: ... 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 129 PRE COMMISSIONING CHECKLIST Page 4 Notes for the Commissioning Agent ...

Page 130: ...te TJ 7k to 12k 0 44 11 2 Way Cassette TL 18k to 24k 0 35 12 4 Way 2 x 2 Cassette TR 5k to 7k 0 40 13 4 Way 2 x 2 Cassette TR 9k to 12k 0 55 14 4 Way 2 x 2 Cassette TQ 15k to 18k 0 71 15 4 Way 3 x 3 Cassette TN 9k to 15k 1 06 16 4 Way 3 x 3 Cassette TM 18k to 24k 1 41 17 4 Way 3 x 3 Cassette TP 24k to 28k 1 06 18 4 Way 3 x 3 Cassette TN 36k 1 41 19 4 Way 3 x 3 Cassette TM 42k to 48k 1 41 20 High S...

Page 131: ...12 8 12 8 12 8 38 4 36 0 ARWN432BAS4 ARWN144BAS4 ARWN144BAS4 ARWN144BAS4 12 8 12 8 12 8 38 4 Table 78 Total Heat Pump Water Source Unit 208 230V Refrigerant Charge Table 79 Total Heat Pump Water Source Unit 460V Refrigerant Charge Nominal Tons Combination Model Numbers Individual Component Model Numbers Refrigerant Charge Frame 1 Frame 2 Frame 3 Total 6 0 ARWN072DAS4 ARWN072DAS4 12 8 12 8 8 0 ARWN...

Page 132: ... 12 8 12 8 38 4 36 0 ARWB432BAS4 ARWB144BAS4 ARWB144BAS4 ARWB144BAS4 12 8 12 8 12 8 38 4 Table 80 Total Heat Recovery Water Source Unit 208 230V Refrigerant Charge Table 81 Total Heat Recovery Water Source Unit 460V Refrigerant Charge Nominal Tons Combination Model Numbers Individual Component Model Numbers Refrigerant Charge Frame 1 Frame 2 Frame 3 Total 6 0 ARWB072DAS4 ARWB072DAS4 12 8 12 8 8 0 ...

Page 133: ...alogs visit www lghvac com Freight Damage and Unit Replacements Your LG Manufacturer Representative Missing Parts Your LG Manufacturer Representative Received Wrong Water Source Unit Model Your LG Manufacturer Representative Installation Startup and Commissioning Technical Assistance 1 888 865 3026 ...

Page 134: ...com IM_MultiV_WaterIV_5_16 Supercedes IM_MultiV_WaterIV_11_15 Supercedes IM_MultiV_WaterIV_6_15 Supercedes IM MultiV WaterIV 02 15 Supercedes IM MultiVWaterIV 06 14 LG Customer Information Center Commercial Products 1 888 865 3026 USA Follow the prompts for commercial A C products 20001747 ISO 9001 2008 LG ELECTRONICS INC ...

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