Installation Manual
Hydro Kit Medium Temperature (K2)
Hydro Kit High Temperature (K3)
Installation Manual
Hydro Kit Medium Temperature (K2)
Btu/h 107,500
Hydro Kit High Temperature (K3)
Btu/h 86,000
PROPRIETARY DATA NOTICE
This document, as well as all reports, illustrations, data, information, and
other materials are the property of LG Electronics U.S.A., Inc., and are
disclosed by LG Electronics U.S.A., Inc., only in confidence.
This document is for design purposes only.
Do not throw away, destroy, or lose this manual.
Please read carefully and store in a safe place for future reference.
Content familiarity required for proper installation.
The instructions included in this manual must be followed to prevent product malfunction, property damage, injury, or death to the user or
other people. Incorrect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the
symbols described below.
This symbol indicates a potentially hazardous situation which, if not avoided, may result in death, serious injury, property
damage or equipment damage.
This symbol indicates additional helpful information such as an explanation, a comment, or a clarification about the subject.
This symbol indicates a tip or recommendation.
Recommendations instruct the user to apply the suggested practice to ensure the best operating results in order to achieve the
maximum benefit of the product.
Tips contain practical information that may help the user solve a problem or describe actions that may save time.
For more technical materials such as submittals, engineering
databooks, and catalogs, visit www.lg-vrf.com.
VRF-IM-BT-001-US_014A06
For continual product 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.
TABLE OF CONTENTS
SAFETY PRECAUTIONS........................................................................ 5
Roughing-In.......................................................................................... 5
Power Wiring and Communications Cabling��������������������������������������� 6
Installation............................................................................................ 7
Wiring Precautions............................................................................... 7
Operation and Maintenance................................................................. 8
INTRODUCTION...................................................................................... 9
Nomenclature........................................................................................ 10
Unit Features..........................................................................................11
Parts....................................................................................................... 13
Installation Parts................................................................................. 13
Optional Accessories.......................................................................... 13
Specifications....................................................................................... 14
Dimensions........................................................................................... 15
Wiring.................................................................................................... 17
ROUGHING-IN....................................................................................... 19
Unpack the Indoor Unit / Inspect for Freight Damage��������������������� 19
Receiving / Transportation / Storage.................................................. 21
General Mounting / Anchoring............................................................ 22
Hydro Kit Wall Mounted Controller..................................................... 23
Piping..................................................................................................... 24
Refrigerant Piping................................................................................ 26
Water Piping.......................................................................................... 27
Strainer Installation............................................................................. 30
Solar Heating System Piping............................................................... 32
Solar Heating System Interface Kit (PHLLA)...................................... 32
Water Piping Schematic....................................................................... 33
Water Circuit Preparation.................................................................... 34
Power Wiring......................................................................................... 35
Dry Contact Wiring............................................................................... 36
Communications Cables...................................................................... 37
LG Remote Temperature Sensor........................................................ 40
Accessory Installation.................................................................... 41-53
Independent Power Module (K2 Only)............................................... 41
Hydro Kit Medium Temperature (K2) Control Panel Layout
43
Hydro Kit High Temperature (K3) Control Panel Layout�������������������� 43
Terminating Group Controlled Hydro Kits........................................... 46
PRE-COMMISSIONING......................................................................... 54
Group Control Setup............................................................................ 54
Plan the Multi V System Central Control Addresses Assignments 54
Hydro Kit/Indoor Unit Central Control Address Assignments
54
Hex Address Assignment Limitations................................................. 54
Multi V System Central Controller Communications Limitations
54
Group Control Setup............................................................................ 55
DIP Switch Setting - Hydro Kit Medium Temperature���������������������� 56
DIP Switch Setting - Hydro Kit High Temperature���������������������������� 57
Installer Setting Configuration............................................................ 58
Installer Setting Function Codes........................................................ 59
Function Codes - Common Settings.................................................. 60
Function Codes - Hydro Kit Medium Temperature��������������������������� 62
Function Codes - Hydro Kit High Temperature�������������������������������� 66
UNIT OPERATION................................................................................. 70
Emergency Operation.......................................................................... 71
Maintenance.......................................................................................... 72
Seasonal (K2, K3)................................................................................. 72
Hydro Kit Accessories......................................................................... 73
Troubleshooting................................................................................... 75
Error Codes........................................................................................... 76
Troubleshooting................................................................................... 77
Finishing the Installation..................................................................... 79
Installation Checklist ........................................................................... 80
Device Configuration Worksheet........................................................ 82
Who to Call for Assistance.................................................................. 83
FINISH UP.............................................................................................. 41
3
MULTI V Hydro Kit Installation Manual
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4
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.
SAFETY PRECAUTIONS
IMPORTANT!
•Please read this manual completely before installing the product.
•As an installer or service provider, it is your job to install or service the system to operate safety and efficiently. Improper installation, adjustment, alteration, service, or maintenance is dangerous to personnel and/or property and can void the warranty.
•Follow the instructions in this manual to prevent product malfunction, property damage, injury or death to the user or other people.
Incorrect operation due to ignoring any instructions will cause harm or damage.
•The level of seriousness is classified by the symbols described below.
This symbol indicates a potentially hazardous situation which, if not avoided, may result in death or serious injury.
This symbol indicates additional helpful information such as an explanation, a comment, or a clarification about the subject.
Roughing-In
If the air conditioner is installed in a small space, take
measures to prevent the refrigerant concentration from
exceeding safety limits in the event of a refrigerant leak.
Consult the latest edition of ASHRAE (American Society of Heating,
Refrigerating, and Air Conditioning Engineers) Standard 15. If the
refrigerant leaks and safety limits are exceeded, it may result in personal
injuries or death from oxygen depletion.
Do not install, remove, or re-install the unit by yourself
(customer).
There is risk of fire, electric shock, physical injury or death.
Ask the dealer or an authorized technician to install the unit.
Improper installation by the user may result in water leaks, fire, electric
shock, physical injury or death.
For re-installation, always contact the dealer or an authorized
service provider.
There is risk of fire, electric shock, physical injury or death.
Be very careful when transporting the unit.
•Indoor unit weight and size preclude one person carrying the unit.
Use two or more people to transport the unit without the assistance of mechanical transport equipment because there is a risk of
personal injury.
•Some products use polypropylene bands for packaging. Do not use
polypropylene bands to lift the unit.
•Suspend the water source unit from the base at specified positions.
Support the outdoor unit a minimum of four points to avoid slippage
from rigging apparatus.
Do not handle indoor units without the use of gloves and
protective clothing. The unit may have sharp edges.
There is a risk of personal injury.
Dispose the packing materials safely.
Destroy the structure of plastic packaging and boxes to prevent children
from playing with them. There is a risk of injury, suffocation and/or death
to humans, animals and wildlife.
Do not install the unit on an unstable structure.
It may result in the failure of the structure, property damage, equipment
damage, and/or personal injury or death.
Install the unit in a safe location where nobody can step on
or fall onto it.
There is risk of unit damage, physical injury or death.
R410A and R134a refrigerants create toxic gases when
burned. Do not store or use flammable products near the
unit.
There is risk of product failure, fire, and physical injury or death.
Replace all control box and panel covers after completing
work.
Failure to do so may result in dust or water infiltration, causing fire, electric
shock, and physical injury or death.
Always wear safety glasses and work gloves when installing
the unit. A rapid release of R410A and R134a refrigerants may
cause frostbite.
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.
5
Safety Precautions
This symbol indicates a tip or recommendation.
Recommendations instruct the user to apply the suggested practice to ensure the best operating results in order to achieve the
maximum benefit of the product.
Tips contain practical information that may help the user solve a problem or describe actions that may save time.
SAFETY PRECAUTIONS
Roughing-In — Continued
Properly insulate all cold surfaces when installing this product.
Uninsulated cold surfaces may generate condensate that may drip and
cause water damage to wall and floors.
This product is engineered to be used for comfort cooling /
heating. It is not to be used in applications that require
precision cooling or heating such as data centers, food
preservation, wine coolers, refrigeration and / or freezer
applications.
MULTI V Hydro Kit Installation Manual
There is risk of property damage.
Provide field-installed electrical isolation devices to protect
sensitive equipment sharing a power source with this product.
Provide sufficient protection against the effects of
electromagnetic fields (EMF) and electrical noise.
Inverter equipment, private power generators, high-frequency
medical equipment, or radio communication equipment may cause the
air conditioner to malfunction.
Install the unit considering the potential for earthquakes.
Improper installation may cause the unit to fall over, resulting in physical
injury or death.
Do not install this product in a location that is noise
sensitive. Provide additional acoustical treatment as needed.
The risk is occupants may be discomforted.
Provide sufficient electrical system protection against
lighting strikes.
The risk is loss of warranty, product damage, and / or complete loss of
this product.
When installing refrigerant piping, consider pipe expansion.
Improper pipe installation may lead to pipe fatigue, failure, and a rapid
release of refrigerant, frostbite, suffocation, physical injury, and or death.
Power Wiring and Communications Cabling
The information contained in this manual is intended for use
by a qualified, experienced service technician who is familiar
with safety procedures and equipped with the proper tools
and test instruments.
Failure to carefully read and follow all instructions in this manual
may result in equipment malfunction, property damage, personal injury
or death.
Always use lock-out, tag-out procedures!
Ensure the electrical power is off and the disconnect is locked and tagged
prior to working on the Hydro Kit.
All electric work must be performed by a licensed electrician
and conform to local building codes or, in the absence of local codes, with the National Electrical Code, and the instructions given in this manual.
If the power source capacity is inadequate or the electric work is not
performed properly, it may result in fire, electric shock, physical injury or
death.
This equipment uses high voltage electricity. Only a qualified,
experienced electrician should wire this system. Never
assume that the electrical power has been disconnected.
Verify with a meter.
Failure to properly respect electricity, use industry best grounding practices, follow suggested wiring instructions, local, and NEC codes can lead
to electrical shock, physical injury, seizures, and death.
Refer to local, state, and federal codes, and use power wires
of sufficient current capacity and rating.
Wires that are too small may generate heat and cause a fire.
6
Use a properly sized circuit protective device. Using an undersized protective device will lead to equipment malfunction. Installing an oversized protective device may cause burns, fire,
and death.
There is risk of fire, electric shock, explosion, physical 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.
Do not use a field-provided communications cable between
the Hydro Kit and the Hydro Kit Wall Mounted Controller. Use
only LG provided communications cable. Do not shorten,
modify, lengthen, or remove factory plug-able connectors
from the communications cable provided with the Hydro Kit
Wall Mounted Controller wiring kit. The product will malfunction.
Verify all power, ground, and communications wires and
cables are properly terminated before applying power to the
product. Securely tighten all wire terminations.
Improper and/or loose wire and communications cable terminations may
cause product malfunction, fire, physical injury or death.
Properly secure power wires and communications cables
at connectors, and provide slack in cable to eliminate wire
strain.
Inadequate connections may generate heat or cause a fire and result in
physical injury or death.
Turn power off at the unit disconnect before servicing.
Electrical shock can cause physical injury or death.
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.
SAFETY PRECAUTIONS
Installation
Always use lock-out, tag-out procedures!
Hydro Kit High Temperature Water Heater (K3) must be kept
in an upright position during installation.
To avoid oil migration from the onboard compressor..
Verify the piping system has been properly evacuated
(<500 ppm), and the system’s refrigerant charge is correct
before commissioning and after any repair is made.
Do not make refrigerant substitutions. Use the refrigerant
listed on the nameplate of the unit.
Ensure the electrical power is off and the disconnect is locked and tagged
prior to working on the Hydro Kit.
Improper system evacuated and/or an improper refrigerant charge may
cause product malfunction.
Do not install the units outside.
There is risk of fire, electric shock, explosion, and physical injury or death.
If a different refrigerant is used, or air mixes with original refrigerant, the
unit will malfunction and be damaged.
Take appropriate actions at the end of HVAC equipment life
to recover, recycle, reclaim or destroy refrigerants
according to applicable U.S. Environmental Protection
Agency (EPA) rules.
Do not change the settings of the protection devices.
Do not store or use flammable gas or combustibles near the
unit.
There is risk of product failure, fire, explosion, and physical injury or death.
Replace all control box and panel covers.
If cover panels are not installed securely, dust, water and animals may
enter the outdoor unit, causing fire, electric shock, and physical injury or
death.
Wiring Precautions
Turn the power off at the nearest disconnect before servicing
the equipment.
Electrical shock can cause physical injury or death.
Do not supply power to the unit until all electrical wiring,
controls wiring, piping, installation, and refrigerant system
evacuation are completed AND the commissioning agent has
authorized you to do so.
Always check for system refrigerant leaks after the unit has
been installed or serviced.
Low refrigerant levels may cause product failure, and exposure to high
concentration levels of refrigerant gas may lead to illness or death.
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.
7
Safety Precautions
If the pressure switch, thermal switch, or other protection device is
shorted and forced to operate improperly, or parts other than those
specified by LG are used, there is risk of fire, electric shock, explosion,
and physical injury or death.
SAFETY PRECAUTIONS
Operation and Maintenance
Do not allow water, dirt, or animals to enter the (Hydro Kit)
unit.
There is risk of unit failure, fire, electric shock, physical injury or death.
Do not provide power to or operate the unit if it is flooded or
submerged.
There is risk of fire, electric shock, physical injury or death.
Do not operate the disconnect switch with wet hands.
MULTI V Hydro Kit Installation Manual
There is risk of fire, electric shock, physical injury or death.
Periodically verify the equipment mounts have not
deteriorated.
If the base collapses, the unit could fall and cause property damage, product failure, physical injury or death.
Do not touch the refrigerant piping during or after operation.
It can cause burns or frostbite.
8
Do not operate the unit with the panel(s) or protective
cover(s) removed; keep fingers and clothing away from
moving parts.
The rotating, hot, cold, and high-voltage parts of the unit can cause physical injury or death.
If a refrigerant gas leak is detected, leave the room!
Refrigerant gas in sufficient quantity in an enclosed area can cause suffocation and death. Obtain a properly maintained Self Contained Breathing Apparatus (SCBA) and training on how to use it before reentering the
area
For the High Temperature Heating Model (K3), turn on the
power at least six (6) hours before operation begins.
Starting operation immediately after turning on the main power switch can
result in severe damage to the compressor(s). Keep the power switch on
during the operational season.
Clean up the site after servicing is finished, and check that
no metal scraps, screws, or bits of wiring have been left
inside or surrounding the Hydro Kit.
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.
INTRODUCTION
Hydro Kit Models
This manual describes how to install the Multi V™ Hydro Kit. The Hydro Kit is available in two models. Refer to Table 1 for model chassis,
model number and capacities.
Table 1: Hydro Kit Model Numbers and Capacities
Unit
Chassis Name
Model Number
Capacity
Hydro Kit Medium Temperature
K2
ARNH963K2A2
Cooling: 95,900 Btu/h
Heating: 107,500 Btu/h
Hydro Kit High Temperature
K3
ARNH763K3B2
Heating Only: 86,000 Btu/h
These units are to be used in conjunction with LG’s Multi V Variable Refrigerant Flow (VRF) Heating, and Air Conditioning system. Both units
operate on 208–230 V, 60 Hz, 1-phase power.
More in-depth technical and performance information on these units is available in the Multi V™ Hydro Kit Engineering Manual available at
http://www.lg-vrf.com.
HydroKit Medium Temperature (K2)
HydroKit High Temperature (K3)
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.
9
Introduction
Install these unit(s) in the location(s) specified by your design engineer, HVAC system layout drawings and project specifications. Perform the installation according to the procedures in this manual. Improper installation may result in injury to or death of personnel, equipment malfunction and/or
property damage.
NOMENCLATURE
HydroKit Nomenclature
ARN
H
96
3
K2
MULTI V Hydro Kit Installation Manual
Family
ARN = Multi V Indoor Unit
(Refrigerant R410A)
Type
H = Hydro Kit
Nominal Capacity
(Total Heating Capacity in Btu/h)
96 = 107,500
76 = 86,000
Electrical Ratings
3 = 208–230V/60Hz/1Ph
Chassis
K2 = Hydro Kit Medium Temperature
K3 = Hydro Kit High Temperature
Combination of functions
A = Standard
B = High Temperature Water Heater
Generation
2 = Second
10
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©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
A
2
UNIT FEATURES
Table 2 compares main features of the two Hydro Kit models.
Hydro Kit Compatibility
The Hydro Kit is fully compatible with Multi V III, Multi V IV and Multi V Water IV units. The Hydro Kit is not compatible with Multi V Mini, Multi
V Plus II, Multi V Sync II, Multi V Space, Multi V Water II, Multi V Water Mini or any duct-free split products.
Table 2: Hydro Kit Product Features.
Features
Self diagnosis
√
√
Hydronic Circuit Isolation
Auto Start
√
√
*Manual or Auto Restart
√
√
Child Lock
√
√
Group Control1
√
√
Timer (on/off)
X
√
Timer (weekly)2
X
√
Hydro Kit Wall Mounted
Controller
√
√
Network Solution (LGAP)
√
√
PQDSB-1
PQDSB-1
X
√
Water Pump ON/ OFF
Control
Factory Mounted Flow
Switch
Conventional line voltage
(208-230° v) Thermostat
Interface2
Conventional 24 vac
Thermostat Interface2
Conventional Mechanical
Thermostat Interface1
Indirect Tank Water
Pre-Heating
3rd Party Solar Heating
System Flow Control
Storage Tank Heating
Operation Timer
PQRSTA0
PQRSTA0
PHLLA
X
2
Remote Enable/Disable via
LG Dry Contact3
Power Distribution
Indicator (PDI) Interface
Remote Temperature
Sensor
Solar Heating Circuit
Interface1
Hydro Kit Based Functions
BMS Integration
Options
ARNH963K2A2 ARNH763K3B2
ARNH963K2A2 ARNH763K3B2
√
X
√
√
√
√
√
√
√
X
√
√
√
√
√
X
√
√
Water Temperature Reset
√
√
Overheating Protection
√
√
Emergency Heating
Operation
√
√
Introduction
Controller Based Functions
Features
Hydro Kit models (i.e., K2 and K3 chassis) cannot be mixed within the same group. Each Hydro Kit unit group must be connected to the same outdoor unit.
Hydro Kit units within the same group must have the same DIP switch settings. The only DIP switch that can differ is the group control setting switch, where
one Hydro Kit will be the master and the remaining Hydro Kit units will be slaves.
2
Manual restart is not available when the Hydro Kit is configured for conditioned space control, using a conventional thermostat.
3
Sold separately and field installed.
1
KEY:
√: Available
X: Not available
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.
11
UNIT PIPE, WIRE AND CABLE
CONNECTION
The following diagrams display all piping and cable routing locations on the two chassis.
Hydro Kit Medium Temperature — K2
MULTI V Hydro Kit Installation Manual
Hydronic Circuit Water Outlet Connection
R-410a Low Pressure Vapor Pipe Connection
R-410a High Pressure Vapor
Liquid Pipe Connection
Condensate Drain Pipe
Power Wire Knock-out
Hydronic Circuit Water Inlet Connection
Communication Cable Knock-out
Figure 1: Medium Temperature (K2) Unit Connections
Hydro Kit High Temperature — K3
Heating Circuit Water Outlet Connection
Communication Cable Knock-out
Power Wire Knock-out
R-410a Low Pressure Vapor Pipe
R-410a High Pressure Liquid Pipe
Heating Circuit Water Inlet Connection
Figure 2: High Temperature (K3) Unit Connections
12
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
PARTS
Installation Parts
Table 3 lists installation parts for the K2 and K3 models of the Hydro Kit. Be sure all field-provided parts meet appropriate local and national
codes. Quantities are per each unit installed.
Table 3: Parts and Accessories Provided for each Hydro Kit
Quantity
Part Image
Installation Manual (this manual)
1
n/a
Hydro Kit Remote Control Panel
1
Sensor Well
1
Indirect Hot Water Storage Tank
Sensor
1
Refrigerant Strainer
1
Independent Power Module
1
Introduction
Part
Optional Accessories
Table 4 lists additional optional accessories available through LG Electronics.
Table 4: Optional Accessories Available from LG Electronics
Part
Model
Remote Wall Mounted Sensor
PQRSTA0
Control via the Hydro Kit based on
conditioned space temperature.
Dry Contact
PQDSB-1
Binary closure- Remote Enable/Disable.
Solar Heating System
Interface Kit
PHLLA
Description
Solar heating system interface.
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.
13
SPECIFICATIONS
Table 5 lists specifications for each Hydro Kit chassis (K2 and K3). Note that due to the functionality of each Hydro Kit some types of specs
will not be available on certain unit models.
Table 5: Hydro Kit Specifications
Type
Power Supply (V/Hz/Ph)
Rated Cooling Capacity (Btu/h)
Rated Heating Capacity (Btu/h)
ARNH763K3B2
208-230/60/1
208-230/60/1
95,900
n/a
107,500
86,000
21 x 25 x 13
21 x 43 x 13
Net Weight (lbs)
78
208
Shipping Weight (lbs)
89
219
Brazed Plate Heat
Exchanger
Brazed Plate Heat
Exchanger
Rated Water
Flow (GPM)
24.3
9.5
Pressure Drop (ft-wg)
23.1
7
Inlet Diameter
1” MPT
1” MPT
Outlet Diameter
1” MPT
1” MPT
Liquid ODU (in)
3/8
3/8
Vapor Gas ODU (in)
7/8
3/4
1” MPT
1” MPT
18-2 stranded shielded
18-2 stranded shielded
Use LG supplied cable only
Use LG supplied cable only
Refrigerant Type
-
R410A
Control Device
-
Electronic Expansion Valve
R410A
R134a
-
6.6
Electronic Expansion Valve
Electronic Expansion Valve
Nominal Dimensions W x D x H (In)
MULTI V Hydro Kit Installation Manual
ARNH963K2A2
Type
Refrigerant
to Water Heat Exhanger
Water Pipe Connections
Refrigerant Pipe
Connections
Drain Connection
Multi V ODU Comm. Cable
(AWG -# Conductors, type)
Hydro Kit Wall Mounted Controller
Communication Cable
Internal Circuit
Refrigerant Type
Multi V System
Refrigerant
Charge (lbs)
Control Device
14
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.
DIMENSIONS
Hydro Kit - K2
Figure 3 shows the dimensional diagram of the Hydro Kit Medium Temperature, along with piping and cabling information.
Introduction
Figure 3: Dimensions for Hydro Kit — K2
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.
15
DIMENSIONS
Hydro Kit - K3
MULTI V Hydro Kit Installation Manual
Figure 4 shows the dimensional diagram of the Hydro Kit High Temperature, along with piping and cabling information.
Figure 4: Dimensions for Hydro Kit (K3)
16
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.
WIRING
Hydro Kit - K2
Figure 5 shows the wiring diagram for the Hydro Kit Medium Temperature.
24V Transformer
Water Pump
Pilot Relay
Sockets and Connections+
CN-2WAY (A)
CN-2WAY (B)
CN-3WAY (A)
CN-3WAY (B)
CN-CC
To terminal strip B, screws 14, 15, 16
CN-COM
Multi V communication to outdoor or water
source unit
R410A EEV value
Not used
To terminal strip A, screws 8, 9, 10
To terminal strip A, screws 1, 2, 3
Optional LG Dry Contact connection
CN-EEV
CN-FLOW1
CN-FLOW2
CN-FLOW3-4
CN-OPTION
Factory mounted flow switch
Not used
Not used
Option card interface
Heat exchanger - refrigerant pipe in
temperature
Heat exchanger - refrigerant pipe out
temperature
AC power to PCB
CN-PIPEIN
CN-PIPEOUT
CN-POWER
CN-REMO
CN-ROOM
Hydro Kit unit controller
LG Remote Temperature Sensor (optional)
CN-TH3(BOTTOM/
CENTER)
Heat exchanger-inlet water temperature
sensor
Heat exchanger-outlet water temperature
sensor
CN-TH4(TOP)
Temperature sensor: Solar heating circuit
temperature sensor (optional)
CN-TH3(TOP/LEFT)
Temperature sensor: Hot water storage tank
sensor (field mounted)
3rd Party 208-230/60/1 thermostat (option)
CN-TH4(BOTTOM)
CN-THM01
CN-THM02
CN-TRANS
CN-W/PUMP (A)
3rd Party 24VAC thermostat (option)
24 Volt power to PCB
To terminal strip B, screws 11, 12: Solar
heating system circulating pump
CN-W/PUMP (B)
To terminal strip A, screws 4,5: Solar heating
system circulating pump
CN-WRITE
EARTH
L
Earth Ground
Not used
Line (+) power connection 208-230/60/1
Neutral (-) power connection 208-230/60/1
N
Ground
Thermistor
Introduction
Fuse
Field Connections - LG Sourced Accessories
CN-ROOM
CN-REMO
LG remote temperature sensor (optional)
Remote mounted Hydro Kit unit controller
CN-CC
LG Dry Contact PCB interface (3rd party
binary signal enabe/disable
CN-TH4 (TOP)
LG Solar Kit temperature sensor for
secondary heated water storage tank
CN-TH4 (BOTTOM)
LG provided hot water tank temperature
sensor
CN-EEV
5-wire harness from power module accessory
CN-EEV/MAIN to CN-EEV on the Hydro Kit
MAIN PCB
CN-WRITE
Single wire from power module accessory
CN-EEV/MAIN to Hydro Kit MAIN PCB
CN-WRITE
CN-EEV/LOAD
Wire harness from power module accessory
to Hydro Kit EEV valve
*
*
*
Field Supplied Connections
TERMINAL STRIP SCREW TERMINALS
A
1, 2, 3
A
4,5
A
6,7
A
8, 9, 10
B
11, 12
B
13
B
14, 15, 16
B
17, 18, 19, 20
NOTE: If a 24 volt thermostat will be used, adjust wiring
harness configuration
A
Wire Harness A PCB interface 208-230/60/1 or
mechanical conventional thermostat
Wire Harness B
PCB interface for 24VAC conventional
thermostat
Wire Harness C
Wire harness Plug C to conventional
thermostat terminals 18, 19, 20
Wire Color Legend
208-230V/60/1
(USE COPPER WIRE ONLY)
BK
BL
BR
GR
RD
YL
WH
Black
Blue
Brown
Green
Red
Yellow
White
B
208/230V
*For 24V thermostat disconnect housting A and C then connect housing B and C
Figure 5: Wiring for Hydro Kit (K2 Chassis)
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.
17
WIRING
Hydro Kit - K3
Figure 6 shows the wiring diagram for the High Temperature Heating Hydro Kit.
CN-3WAY (A)
CN-CC
To terminal strip A, screws 4,5,6
CN-COM
Multi V communication to outdoor or water
source unit
Optional LG Dry Contact connection
CN-CC
Optional LG Dry Contact connection
CN-COM
Multi V communication to outdoor or water
source unit
R410A EEV value
CN-EEV
CN-FLOW1
CN-FLOW3-4
CN-OPTION
Crankcase
Heater
Inverter PCB
Cooling Fan
MULTI V Hydro Kit Installation Manual
R-134A Inverter
Compressor
Sockets and Connections - Main PCB
Factory mounted flow switch
Power to RS-484 communications PCB
CN-PIPEIN
Option card interface
Heat exchanger - refrigerant pipe in
temperature
CN-PIPEOUT
Heat exchanger - refrigerant pipe out
temperature
CN-POWER
CN-REMO
CN-ROOM
AC power to PCB
Hydro Kit unit controller
CN-TH3(TOP/LEFT)
Heat exchanger-inlet water temperature
sensor
CN-TH3(BOTTOM/
CENTER)
Heat exchanger-outlet water temperature
sensor
CN-TH4(TOP)
Not used
LG Remote Temperature Sensor (optional)
Hot water storage tank sensor (field
mounted)
CN-TH4(BOTTOM)
CN-THM01
CN-WRITE
EARTH
CN-DC
To terminal strip A, screws 7,8,9,10
Not used
Earth Ground
Communications link with inverter board
RS 485
Communication Board
208-230/60/1
(USE COPPER WIRE ONLY)
Sockets and Connections - Inverter and Other PCB’s
CN-COOLING
CN-Heater1
CN-N/F
AC (N)
AC (L)
W, U, V
CN-EEV1
CN-485/DRY
P-SENSOR (L)
P-SENSOR (H)
Inverter PCB cooling fan
CN-TH3
R134A compressor discharge pipe
thermistor
R134A compressor suction pipe thermistor
R134A compressor crankcase heater
Filtered power to inverter
Line power neutral
Line power 208-230/60/1
Inverter compressor connection
R134A circuit EEV
Communications link
R134A low pressure sensor
R134A high pressure sensor
CN-TH2
CN-INVERTER
Power to noise filter
Ground
Thermistor
Fuse
208/230V
Field Connections - LG Sourced Accessories
CN-ROOM
CN-REMO
LG remote temperature sensor (optional)
Remote mounted Hydro Kit Unit Controller
CN-CC
LG Dry Contact PCB interface (3rd party
binary signal enable/disable
CN-TH4 (BOTTOM)
Temperature sensor: Hot water storage tank
sensor (field mounted)
Field Supplied Connections
TERMINAL STRIP SCREW TERMINALS
1, 2
A
3
A
4,5,6
A
7,8, 9, 10
Wire Color Legend
A
MAIN PCB
A
BK
BL
BR
GR
RD
YL
WH
Black
Blue
Brown
Green
Red
Yellow
White
Figure 6: Wiring for Hydro Kit (K3 Chassis)
18
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ROUGHING-IN
Unpack the Indoor Unit / Inspect for Freight Damage
Choose a location in the vicinity of the installation before removing the protective materials.
DO NOT lift the unit by the refrigerant piping. Use the hanger brackets or the unit case only to lift the unit. Damage to the piping components may occur.
Location Selection
Select a location for installing the unit where:
•The location is indoors in a conditioned space and protected from outdoor weather events.
•The mounting structure will support the weight of the unit(s), piping, and accessories.
•The unit is level.
•Space is allocated for heat exchanger maintenance and draining.
•Space is allocated for the connection of necessary piping.
•Proper electrical panel clearance requirements are satisfied.
•The unit is not exposed to steam, humid air, caustic, and/or acidic
chemical vapors such as but not limited to Chlorine or Muratic acid.
•Provide minimum maintenance clearance and electrical component service areas as shown in Figure 7
•Refer to Table 6 for clearance measurements specific to each chassis.
Due to our policy of continuous product innovation, some specifications may change without notification.
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19
Installation
After opening, if the unit is damaged, repack the unit as it was shipped to you. RETAIN ALL PACKING MATERIALS. In general, freight damage claims
will be denied if the original packing materials are not retained for the claims adjustor to inspect. Call your supervisor on how to proceed with filing a
freight claim and to order a replacement unit.
1. Before opening, check the unit model number on the box. Verify it is the correct capacity, unit type and voltage. Refer to Nomenclature
Chart on page 10 of this manual.
2. Place the box on a solid surface right side up.
3. Cut the white reinforced nylon straps.
4. Open the top of the box and fold back all four flaps.
5. Remove the protective cardboard.
6. The walls and top panels are not attached to the bottom of the box. Lift the cardboard carton by the flaps and remove the box walls and
top and place it to the side.
7. Remove the moisture barrier plastic bonnet.
8. Check the unit nameplate data and model number. Verify the unit voltage, and capacities are correct before proceeding.
9. Remove and retain the installation manual. It is located under the unit, on top of the unit, or taped and inserted inside the unit cabinet.
10.Lift the unit (but not by refrigerant piping!) and inspect for freight damage. If damage is found, repack the unit as it was received in the
original container.
ROUGHING-IN
Roughing-In the Hydro Kit Chassis
Figure 7: Minimum Clearance Areas Around Units
MULTI V Hydro Kit Installation Manual
K2 Chassis
Match Letter
Clearance Area
to Corresponding
Hydro Kit Chassis
Match Letter
Clearance Area to
Corresponding
Hydro Kit Chassis
K3 Chassis
Table 6: Hydro Kit Minimum Clearance Dimension in Inches
Hydro Kit
Chassis
20
Maintenance
A
B
K2
20-1/2
24
K3
20-1/2
24
Ventilation
C
42-1/2
Piping / Heat Exchanger Pull
E
F
G
H
I
J
K
---
---
---
---
13-1/2
8
25
13-1/2
3-1/2
10-1/2
32
13-1/2
14
27
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ROUGHING-IN
Receiving / Transportation / Storage
Transporting / Lifting
Figure 8: Proper Transportation of Unit
•Refer to Table 7 for accurate weights before transporting or lifting.
•When lifting the unit, use the lifting straps and place around the unit.
•Always lift the unit using properly sized lifting straps rated to carry the
unit weight.
•Ensure the straps are long enough to maintain a maximum of a 40°
angle as shown at “A” in Figure 8.
•Center of gravity information regarding each Hydro Kit unit can be
found on the dimensional drawings for the specific unit, on Figure 3
and Figure 4 of this installation manual.
Table 7: Hydro Kit Chassis Net and Shipping Weights
Chassis
Net Weight (lbs.)
Shipping Weight
(lbs.)
ARNH963K2A2
78
89
ARNH763K3B2
208
219
A
A
A: ≤40°
B: Mounting Rail
Installation
•One person should not carry the product.
•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 may not play with them and risk suffocation and death.
•Lift the water source unit from the base at specified locations. Support the water source unit at a minimum of six (6) points to avoid slippage from the rigging apparatus.
•Do not drop the unit when carrying it with a forklift.
•Use a minimum of three (3) lifting straps.
•Place a protective cloth or other soft material at the locations where the casing comes in contact with the lifting straps to prevent damage
to painted surfaces.
•Always know where the center of gravity of the water source unit is before lifting. Hoist the unit with the center of gravity centered among
the lifting straps.
•Use caution when using forklift to transport an unpackaged unit. Consider the unit’s center of gravity when lifting. Protect the painted
surfaces as necessary to prevent damage to the unit finish.
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21
ROUGHING-IN
General Mounting / Anchoring
General Mounting
•When building a base support for the Hydro Kit, ensure that the floor surface / location has enough strength to support the weight of the unit,
enough space for pipes and wiring, the condensate drain connection, and the floor drain.
•Install the Hydro Kit to a base and in a manner approved by the structural engineer to minimize damage to the unit in the event of an earthquake. Any deficiency in installation may cause unit to fall, resulting in physical injury or death.
Anchoring the Hydro Kit Unit
Figure 9 shows the proper location and mounting of the anchor bolts for the Hydro Kit.
Figure 9: Location of the Anchor Bolts
15-1/4
Front
Plan View
13-15/16
Unit: Inch
Location of the
anchor bolts
Side View
Guidelines
Unit: Inch
Anti-vibration
Material
Concrete
Base
Three Threads
Four Bolts
Required
8
•Securely fasten all four (4) corners to the supporting base.
•If not otherwise directed by the structural engineer or local codes,
Use a 7/16 inch or 1/2 inch diameter J-bolt. Use a hexagon nut with
a spring washer.
•Include anti-vibration material chosen by the acoustics engineer.
•Include enough space for refrigerant piping and electrical wiring
when installing through the bottom of the unit.
•Use an H-beam, concrete support, or other acceptable support
structure designed by a structural engineer.
3
MULTI V Hydro Kit Installation Manual
Securely attach the Hydro Kit to a concrete pad, base rails, or other mounting platform anchored to the building structure.
Avoid placing the unit in a low lying area where water may accumulate. Refer to dimensional drawing on page 15 and on page 16 of this
manual, and follow the applicable local code for clearance, mounting, anchor, and vibration attenuation requirements.
Place rubber isolation pads between the mounting feet and the base. Secure the feet to the base using washers and nuts. Fix the unit tightly
with bolts as shown below in Figure 9.
•All referenced materials are to be field-supplied. Images are not to
scale, are for reference only, and are not intended to be used for design
purposes.
•Always install per mounting instruction and detail provided by the
design or structural engineer.
22
Unit: Inch
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ROUGHING-IN
Hydro Kit Wall Mounted Controller
Drip Pan (Optional and Field Supplied)
Depending on the location of the unit an optional drip pan may be necessary underneath the unit. The K2 unit creates condensate and has a
1.0” MPT condensate pipe connection on the right side. The K3 High Temperature Heating model does not create condensate. All cold surfaces are insulated from the factory. However, the unit is equipped with a base pan drain hole. This hole is provided to drain water that may
enter the unit during maintenance and service.
Roughing-In the Hydro Kit Unit Controller
Due to our policy of continuous product innovation, some specifications may change without notification.
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Installation
•It may be necessary to use a handy box that is sized in metric units, depending on the controller model. Check the mounting hole pattern
and dimensions on of the Hydro Kit Unit Controller subbase before selecting a handy box.
•Use only LG-supplied communications cable. Using field-supplied cable may result in communications problems between the Hydro Kit
Unit Controller and the Hydro Kit unit.
•DO NOT cut the quick-connect plugs off or adjust the length of the cable.
•Keep the communications cable away from high voltage wires and electromagnetic field (EMF) producing equipment.
•Do not route power wiring and communications cables in the same conduit.
•Maintain the minimum distance required between the communications cable and power wiring. The minimum required space between
the two is dependent on the voltage of the power wiring. Refer to the appropriate Multi V Outdoor Unit Engineering Manual for minimum
distance specifications.
1. If the Hydro Kit’s water flow will be controlled by monitoring the conditioned space temperature, proper Hydro Kit operation depends
on the location of the wall mounted sensor or thermostat. A good location will protect the sensor/thermostat from direct sunlight and
local sources of water vapor, heated, and cooled air. If no mounting height was specified by the building designer, place the handy
box approximately fifty-five (55) inches above the finished floor if regulations of the American Disability Act (ADA) do not require a
lower mounting height.
2. Pull LG communications cable between the Hydro Kit controller handy box and the Hydro Kit unit. A 30 foot length of cable will be
found with the Hydro Kit Controller.
3. Store a minimal amount of cable in the handy box. Any additional cable should be coiled and stored near the Hydro Kit unit control
panel.
4. If additional cable length is needed, use a 39 foot LG Wired Remote Extension cable (Model No. PZCWRC-1).
5. If the cable between the Hydro Kit controller and the Hydro Kit unit is too long, do not cut the cable and shorten. Coil any spare communications cable, tie-wrap it, and leave it next to the indoor unit location.
23
ROUGHING-IN
Piping
Refrigerant Piping
Refrigerant Safety
MULTI V Hydro Kit Installation Manual
ASHRAE Standards 15-2010 and 34-2010 offer guidelines that address refrigerant safety and the maximum allowable concentration of refrigerant in an occupied space. Refrigerant will dissipate into the atmosphere, but a certain volume of air is required for this to occur safely.
For R410A refrigerant, the maximum allowable concentration of refrigerant is twenty-six (26) lbs. per 1,000 cubic feet of an occupied space.
Buildings with twenty-four (24) hour occupancy allow half of that concentration.1
ASHRAE Standards 15 and 34 assume that if a system develops a leak, its entire refrigerant charge will dump into the area where the leak
occurs. To meet ASHRAE Standards 15 and 34, calculate the refrigerant concentration that may occur in the smallest room volume on the
system, and compare the results to the maximum allowable concentration number.1 Also consult state and local codes in regards to refrigerant safety.
Verify that the maximum refrigerant concentration level in the space where the indoor unit will be mounted meets the concentration limit for the
application.
Cutting the Pipes
•Use the accessory piping kit or use pipes purchased locally
(Figure 10).
•Measure the distance between the indoor and outdoor units.
•Cut the pipes a little longer than the measured distance.
Figure 10: Cutting Pipes
Removal of Burrs
•Completely remove all burrs from the cut cross section of pipe/tube
(Figure 11).
•Be sure the end of the copper tubing is pointed downward (toward
the floor) as you remove burrs. This will prevent the burrs from
falling back into the tubing.
Figure 11: Removing Burrs for Piping
Pipe Brazing
Make sure to flow Nitrogen during brazing. If brazing is done without
flowing Nitrogen, it can generate a thick oxidized coating within the pipe
which will interfere with the normal operation of valve and compressor
(Figure 12).
Figure 12: Brazing Pipes
1
Information about ASHRAE Standard 15-2010 / 34-2010 and addenda current as of the date of this publication.
24
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ROUGHING-IN
Pipe Insulation
Heat Recovery System Unit
Refrigerant Pipe Connections
•When connected to a Heat Recovery Unit, the Hydro Kit requires
the use of two ports. If the capacity of the Hydro Kit and other
IDU’s connected to the Heat Recovery Unit are similar, install the
Hydro Kit on Ports 1 & 2.
•When twinning ports, the “twinned” pipes must be the same diameter, layout, and length to balance the flow between the two
(Figure 13).
Gas pipe 5/8 inch
Liquid pipe 3/8 inch
Gas pipe 7/8 inch
Liquid pipe 3/8 inch
Hydro kit
Figure 13: Heat Recovery - Refrigerant Pipe Connections
Refrigerant Piping Support
Installation
A properly installed pipe system will have sufficient support so that
pipes will not sag during the life of the system. As necessary, place
supports looser for segments where potential sagging could occur.
Maximum spacing of pipe supports shall meet local codes
(Figure 14).
Figure 14: Refrigerant Piping Support
Pipe Insulation
To prevent condensate from forming on the surface of the insulation,
calculate the proper wall thickness required based on the ambient air
conditions of the surrounding area. Use calculation procedures provided
by the pipe insulation manufacturer.
•Use insulation material with high thermal resistance and rated
for the anticipated operating temperature range. If installing in a
humid environment, use thicker insulation material as specified by
system designer.
•Insulate all cold surfaces to prevent moisture/condensate from
forming.
•Insulate and wrap each pipe separately.
•Use field-provided half (1/2) of an inch thick (or better) closed cell
insulation.
Typical Refrigerant Line Connection
Insulation Detail
Insulation for Indoor Unit Port
(Field Supplied) Insulation for Refrigerant
Piping (Field Supplied)
Overlap Insulation Where the
Port and the Piping Meet
Insulation Clip (Field Supplied)
No Clearance
Figure 15: Typical Refrigerant Line Joint Insulation Detail
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25
ROUGHING-IN
Refrigerant Piping
MULTI V Hydro Kit Installation Manual
Pipe Insulation - Continued
—— The thickness may need to be increased based on ambient
conditions and local codes.
•Wrap all refrigerant and condensate piping, including field-provided
isolation ball valves and pipe connection kits provided by LG.
•Glue all insulation joints (see Figure 15).
—— There should be no air gaps between insulation segments, or
between the insulation segments and the unit case.
—— Fit insulation material snugly against refrigeration pipe. There
should be no air space between pipe surface and surrounding
insulation.
•Do not compress the insulation in areas where the piping passes
through pipe hangers, conduit, and/or wall sleeves.
—— Protect insulation from compression inside hangers and supports by wrapping with a second layer.
Hydro Kit
Insulation over Pipe
Figure 16: Hydro Kit Pipe Insulation
Condensate Piping for Hydro Kit High Temperature (K3) Only
•The Hydro Kit condensate line connection is designed to be a gravity drain. If a condensate pump is required, it shall be field provided and
installed external to the unit case.
•Slope drain line a minimum of 1/4” per foot of horizontal run away from the unit case. Properly vent the condensate line per industry standard
practices. See Figure 17.
While making pipe connections, be careful to support pipe to avoid placing lateral force on the drain nipple. Internal damage may occur.
•Condensate pipe connection is 1” male pipe thread.
Figure 17: Typical condensate line (field provided - not to scale)
26
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ROUGHING-IN
Water Piping
Water Circuit Piping
Guidelines
1. Cap pipe to avoid dust or debris entering the piping.
2. Prior to welding or cutting of piping, check for defects. Check to see there are no slags or burrs inside pipe before installing.
3. Treat pipe threads with joint compound or Teflon tape to prevent leakage.
Figure 18: Hydro Kit Piping Installation
Water Inlet
Pipe
Gate Valve
Water Outlet
Pipe
Water Balancing Valve
Installation
Pressure
Gauge
Temperature
Gauge
PT Service Port
(For Cleaning
Heat Exchanger)
Strainer
(50 Mesh)
Gate Valve
Dielectric
Pipe Union
Refrigerant Pipes
Dielectric
Pipe Union
The Hydro Kit has a factory internally mounted Flow Switch.
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 Life’s Good” is a registered trademark of LG Corp.
27
ROUGHING-IN
Water Piping
MULTI V Hydro Kit Installation Manual
Water Piping Procedure Installation
For the water pipe system, use the closed loop type. Refer to Figure 18 on page 27 when following the procedure below.
1. Select parts that exceed water pressure specifications needed for the Hydro Kit.
2. Use anti-corrosion, steel pipe or copper pipe for water piping.
•For K3 Chassis Hydro Kit: It is recommended that non-ferrous piping be used to reduce the frequency of strainer maintenance and heat
exchanger cleaning.
3. Install a die-electric union fitting where “dissimilar” pipe materials are used. Otherwise install a standard union joint.
4. Install the hose bib fittings.
5. Always, install a Water Circuit Strainer which is provided with the Hydro Kit and place it on the water inlet pipe. For specific steps on
installation, see “Strainer Installation” on page 30 of this installation manual.
•If a replacement strainer is needed, we recommend purchasing an OEM replacement from LG. See specifications for the strainer in the
Installation Parts section in Table 3 on page 13 of this installation manual.
6. Install the air vent in the section of the pipe with the highest elevation. This prevents air from gathering in the pipe system that could potentially impede the flow of water in the system. If the water flow drops, an error code will appear on the Hydro Kit Wall Mounted Controller
display.
7. Use proper size insulation as outlined by insulation manufacturer.
8. Install a pressure relief valve that meets the design water pressure to prevent unit or water pipe damage as the pressure increases inside
the water pipe system.
9. Install isolation valves on the inlet pipe upstream of the strainer and to the outlet pipe of the heat exchanger in order to facilitate heat
exchanger and strainer cleaning.
28
Due to our policy of continuous product innovation, some specifications may change without notification.
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ROUGHING-IN
Water Piping
Indirect Water Tank and Floor Heating Installation
This procedure is provided for illustrative purposes and should be used for reference only. When installing the hydronic piping system, adhere to specifications, drawings, and details provided by the system designer. See Figure 19 below.
1. When selecting an indirect water storage tank, ALWAYS use an INDIRECT type tank where the Hydro Kit water circuit is isolated from the
domestic water system.
2. Use the pump (see (1) on diagram) with sufficient capacity to assure correct water pressure and to supply water to the Hydro Kit.
3. Install the shut-off valve (see (2) on diagram) on both sides of the pump to allow for cleaning and repair of the pump.
4. Install the flexible connectors (see (3) on diagram) to minimize noise and vibration transferred from the pump.
5. Optionally, install the pressure gauge (see (4) on diagram) to monitor the piping system water pressure.
6. Install the expansion tank (see (5) on diagram) to accommodate changes in system water pressure due to temperature difference.
7. When installing the indirect water tank, insert the water tank temperature sensor provided with the Hydro Kit.
Typical Hydronic Circuit Piping Schematic
Installation
Figure 19: Hydronic Circuit Piping
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29
ROUGHING-IN
Water Piping
MULTI V Hydro Kit Installation Manual
Strainer Installation
•Be sure to thoroughly flush the water circuit. Continually check and
clean strainers as necessary.
•Continue flushing period until water circuit strainers remain clean.
The guidelines below apply to both models of the Hydro Kit. Refer to
Figure 20.
1. Install the strainer provided with the Hydro Kit.
2. Check the strainer direction and install on the inlet side of the
heat exchanger.
3. Treat threads with joint compound or wrap the pipe threads with
Teflon tape as needed.
4. Access port must be installed downward within 45 degrees of the
vertical plane.
Water In
FLOW
45°
Front
Strainer
Side
Figure 20: Strainer Installation
Hydro Kit Circuit 3-way Domestic Water Diverting Valve - Space Heating (or
Cooling (K2 Only)
Refer to valve manufacturer’s installation instructions.
Hydro Kit Circuit 2-way Isolation Valve (K2 Only) - In-floor Heating
Refer to valve manufacturer’s installation instructions.
Solar Heating Kit 3-way Diverting Valve (K2 Only) - Domestic Water Tank
Heating
Refer to valve manufacturer’s installation instructions.
Cover
Micro-switch
Adjustment screw
Vibration plate
Bellows
1 inch or
3/4 inch
socket
Freeze Protection Flow Switch (Optional)
Flow switch should be rated for 208-230V and be normally closed.
Flow switch will perform as the first protection device when heated water is not supplied. If
the required water level is not present after installing the flow switch, the water source unit will
display a CH24 error code and will stop operating.
Pad
Figure 21: Flow Switch Schematic
When setting the flow switch, it is recommended to use the default set value of the water
source unit to satisfy the minimum flow rate.
•Minimum flow rate range is 50%; Reference flow rate: 3-ton - 10.6 gpm, 4-ton - 13.2 gpm, 4.4-ton - 15.9 gpm.
Select a flow switch following the pressure specification of the water supply system.
•If the set value does not satisfy the minimum flow rate, or if the set value is changed by the user arbitrarily, it can result in performance deterioration or system failure.
•If the water source unit operates with a hard water supply, the heat exchanger can be damaged or system failure can occur.
•If the water source unit displays a CH24 or CH180 error code, it is possible that the interior of the plate-type heat exchanger is
partially frozen. If this occurs, resolve the partial freezing issue and then operate the water source unit again. (Causes of partial
freezing: Insufficient heat water flow rate, water not supplied, insufficient coolant, foreign particles inside plate-type heat exchanger.)
Valve Orientation
Refer to valve manufacturer’s installation instructions.
30
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ROUGHING-IN
Water Piping
Indirect Water Storage Tank Sensor Well (MEG61846102)
If the storage tank comes with an existing sensor well that can
accommodate the LG provided hot water storage tank sensor,
then skip the first step in the procedure below.
Sensor
Holder Cap
Water
Pipe
Procedure - Typical
Thermistor
Sensing Bulb
Sensor
Well
Inside Surface of
Domestic Waterside
of Storage
PT 1/2 inch
Water Tank Outer Wall
Due to our policy of continuous product innovation, some specifications may change without notification.
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31
Installation
Figure 22: Indirect Water Storage Tank Sensor Well Installation (Typical)
1. Drill and thread a 1/2” FPT hole in the tank wall at the
tank manufacturer’s recommended location.
—— This sensor will provide the average tank water temperature to the Hydro Kit.
2. Remove well cap and sensor from the sensor well and
place in a secure location.
3. If welding the well to the tank:
—— Insert the well into the thread hole and rotate till the
threads on the neck bottom out. Weld the sensor to
the tank and pressure test as necessary.
4. No welding installation:
—— Wrap the threads of the sensor well about 8 times with
Teflon tape. Insert the well into the threaded hole in the
tank wall. Turn clockwise until secure and then finalize
tightening using a socket or open-end wrench.
ROUGHING-IN
Solar Heating System Piping
Solar Heating System Interface Kit (PHLLA)
Hydro Kit Medium Temperature (K2 Only)
Refer to Figure 23 as a guide when installing the Solar Heating System Interface Kit onto the Hydro Kit Medium Temperature Chassis.
Refer to the Solar Heating System Interface Kit Installation Manual for specific installation procedures.
MULTI V Hydro Kit Installation Manual
Dual Source Hydronic Heating Schematic
Solar Thermal Sensor Cable
(39 Ft)
3way valve
(Field Supply)
Sensor & Sensor
Pipe Tee Well
Solar
Thermal
System
Water Out
(Field Supply)
Water Tank Sensor
Cable
Water In
(39 Ft)
Pump
(Field Supply)
Water Out
Water In
Indirect Water
Storage Tank
Figure 23: Dual Source Hydronic Heating Schematic
32
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Solar
Collector
(Field Supply)
ROUGHING-IN
Water Piping Schematic
Floor Heating (With Mixing Tank)
K2 or K3
M
Fan coil unit
Hot water
Radiator
Symbols Key:
= Pump
B = Balancing Valve
M = Modulating two-way Valve
M = Modulating three-way Valve
Installation
Indirect
Water
Storage
Tank
Floor heating circuit
City water
Figure 24: Domestic Water Storage, In-floor, Inductive (Radiator) and Forced Air Hydronic Heating Diagram
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 Life’s Good” is a registered trademark of LG Corp.
33
ROUGHING-IN
Water Circuit Preparation
Water Quality
Water quality must comply with local or national codes. Be sure to read all cautions and warning in this section before adding antifreeze to
the Hydro Kit water circuit.
•Clean water pipes to remove sludge and scale.
•DO NOT charge or operate the Hydro Kit water circuit without the strainer core installed.
•Perform chemical treatment (done by the installer) to prevent rust.
MULTI V Hydro Kit Installation Manual
Protection Against Freezing Temperatures
At locations where water temperatures can drop below 59°F (15°C), use an approved antifreeze solution to protect the water pipes. Consult
your Hydro Kit unit supplier for locally approved solutions.
To add the right amount of antifreeze:
•Calculate the approximate volume of water in the system.
•Add antifreeze solution to the Hydro Kit water circuit.
Use Table 8 as guidance as to the appropriate type and amount of antifreeze to use.
Table 8: Antifreeze Type and Minimum Temperature for Freeze Protection
Minimum Temperature for Freeze Protection
Type of Antifreeze
59°F - 23°F
(15°C - -5°C)
14°F (-10°C)
5°F (-15°C)
-4°F (-20°C)
-13°F (-25°C)
Ethylene Glycol
12%
20%
30%
-
-
Propylene Glycol
17%
25%
33%
-
-
Methanol
6%
12%
16%
24%
30%
•Use only one of the above recommended antifreeze solutions.
•Note that pressure drop and performance decreases when antifreeze is used.
•Note that corrosion can occur when using antifreeze. Add corrosion inhibitor.
•Check concentration of the antifreeze periodically in order to maintain correct percentage levels.
•Take care not to touch or handle antifreeze during installation or operation.
•Follow all cautions and direction for local laws pertaining to the usage and handling of antifreeze.
•Do not add antifreeze to heating only systems.
34
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ROUGHING-IN
Power Wiring
Keep line voltage power away from the communications cable and terminals 3(A) and 4(B). Line voltage power applied to the communications
terminals will damage the indoor unit control board.
•Size all field provided electrical components per NEC and local
code. Always use copper wire.
•Maintain a minimum of two (2) inches between line voltage wires and
communications or Hydro Kit controller cables.
Procedure
Model
Rated Amps (A)
MCA
MOP
ARNH963K2A2
0.05
0.06
15
ARNH763K3B2
23.0
28.8
50
Installation
1. Refer to Table 9 for each model’s correct electrical data before
proceeding with these steps.
2. Provide clean 208/60/1 power to the unit.
•Maximum acceptable power fluctuation range is 188 volts to
228 volts.
3. Remove the cabinet access panel from the Hydro Kit.
4. Remove the knock-out plug from the unit end panel (Figure 25
for (K2) and Figure 26 for (K3).
•Do not use the same knock-out occupied by communications
and zone controller cables.
5. Field-install a plastic or rubber grommet to the edge of the wire
and cable cabinet access holes.
•This will prevent wire chaffing.
6. If using conduit, connect the conduit to the unit cabinet.
•Use field-provided fittings.
•Follow industry best practice procedures.
7. Provide enough slack wire at each indoor unit to connect to the
terminal block without tension on the wire.
8. Route the wire inside the control box paying special attention to
keep the wire away from communications cables by a minimum
of two (2) inches.
9. Secure the wire to the inside surface of the unit cabinet.
•Use a field provided nylon wire clamp.
10.Strip approximately half (1/2) of an inch of insulation from each
of the power wire conductors.
11.Tightly crimp a spade connector to the Hot, Neutral and Ground
Wires.
12.Insert the spade connector under the appropriate terminal block
screws.
13.Securely tighten the terminal screws.
Table 9: Hydro Kit Power Wiring Electrical Data
Communication Cable Knock-out
DO NOT USE!
Power Wire Knock-out
Figure 25: (K2) Hydro Kit Medium Temperature
Communication Cable Knock-out
DO NOT USE!
Power Wire Knock-out
Figure 26: (K3) Hydro Kit High Temperature
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35
ROUGHING-IN
Dry Contact Wiring
Dry Contact - Wiring
Dry Contact May Be Powered Using Two Methods
•Power Source wired directly to the Dry Contact Terminals 1
and 2 and subsequently providing power to the third party
binary switch (Figure 27).
•Power source wired to the third party binary switch (device)
providing power to the Dry Contact (Figure 28).
MULTI V Hydro Kit Installation Manual
Procedure
DRY CONTACT
PCB
CN-CC
RY2
RY1
Connect a CN_DRY with the third party binary contact and monitoring relays to CN-DRY terminals 1 through 4 as shown in either
Figure 27 or Figure 28. External wiring is provided by others.
4
3
2
1
Operation Display
4
3
2
1
Error Check Display
Dry contact
Controller
CN_DRY
N
L
2 2
1 1 INPUT
LG does not
supply this section
AC 220V
Figure 27: Dry Contact - Direct Power Wiring
DRY
DRY CONTACT
CONTACT
PCB
PCB
CN-CC
RY2
RY1
N
2 1
2 1
L
CN_DRY
4
3
2
1
4
3
2
1
Operation Display
Error Check Display
Dry contact
Controller
AC 220V
LG does not
supply this section
Figure 28: Dry Contact - Indirect Power Wiring
36
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ROUGHING-IN
Communications Cables
•Keep communications cables away from line voltage wiring, lighting
ballasts, and other devices emitting EMF energy.
•Maintain a minimum of two inches between line voltage wires and
communications or zone controller cables.
•Never use wire caps.
•Never splice communication cables.
•Star and Wye communications cable configurations are not acceptable.
•Never connect the Hydro Kit controller or other central control products such as AC Smart, PDI, or the LG building management system
gateway products to the communications cable between the indoor
unit and outdoor unit.
The minimum distance required between power wires and the communications cable is voltage/amperage dependent and in cases where either
are relatively high, the minimum distance may be more than two (2) inches. Refer to the respective LG Multi V Outdoor Unit Engineering Manual
on www.lg-vrf.com for detailed information.
Procedure
1. Terminate all Multi V communications cables within the confines
of the Hydro Kit unit cabinet.
2. When pulling cable between components, leave enough slack
to properly route the cable through the unit keeping it away from
the line voltage wiring.
Communications Cables Between the Water Source or Outdoor Unit and the Hydro Kit/Indoor Units/Heat Recovery Units
(Heat Recovery Systems Only)
Refer to the applicable Outdoor or Water Source Unit manuals for cable routing and connection architecture. Figure 29 shows the correct
connection communication cable schematic, including the Hydro Kit among the indoor units. Note Figure 30, which shows improperly terminated communication cable connections in a “starburst” pattern.
Master Outdoor Unit
Figure 29: Outdoor Unit Communications Labeling Schematic
Hydro Kit
K2 or K3
IDU
Heat Recovery Unit
for Heat Recovery
Systems Only
IDU
Hydro Kit Unit Controller
IDU
IDU
IDU
Indoor Unit Zone Controllers
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37
Installation
LG device communications cable voltage does not exceed 5 volts. LG
does not require a handy box to mount the Hydro Kit Unit Controller or
the optional LG Remote Wall Mounted Sensor. Check local code and
install per regulation.
3. Field provides a minimum of 18-2 AWG, stranded and shielded
communications wiring between the indoor units, heat recovery
boxes (if applicable), Hydro Kit, and outdoor units.
4. Ground the shield of the communications cable at the OUTDOOR
UNIT END ONLY.
ROUGHING-IN
Communications Cables
MULTI V Hydro Kit Installation Manual
Guidelines and Recommendations
•Use a 18-2 AWG, shielded, stranded cable between the outdoor unit(s) and the indoor
units / heat recovery units (Heat Recovery Systems Only).
•Cable must be rated for continuous exposure to temperature of up to 140°F.
•Maximum allowable length = 984 feet
•Firmly attach the cable; provide slack but secure in a way to prevent external forces from
being imparted on the terminal block.
•Communications cable connecting the outdoor unit and Hydro Kit and other Multi V indoor
unit(s) should be installed and terminated in a daisy chain (BUS) configuration starting at
the outdoor unit as shown in Figure 29.
•Terminate the cable shield to a grounded surface at the outdoor unit(s) only. Cable shields
between connected devices shall be tied together and continuous from the outdoor unit(s)
to the last device connected.
Select field supplied cable insulation material
based on NEC and local code requirements.
Figure 30: Improperly Terminated Communications Cable—Multiple Core Cable in a Starburst Configuration
Master Outdoor Unit
•Ring and spade terminals used to connect communications cables MUST be
copper bearing. Do NOT use terminals that are galvanized or nickle
plate over steel.
•Always verify the communication cable
is connected to a communications
terminal on the outdoor unit(s). Never
Hydro Kit
apply line voltage power to the comK2 or K3
munication cable connection. If contact
is made, the PCBs may be damaged.
•The shield of the communications
cable connecting the outdoor unit(s)
to the Hydro Kit(s) and other indoor
IDU
IDU
IDU
IDU
IDU
units should be grounded only to the
outdoor unit(s) frame(s). Tie the shield
of each cable segment together using
a wire nut at the Hydro Kit(s) and other
indoor units.
Heat Recovery Unit
•Never ground the shield of the commu- for Heat Recovery
nications cable to the Hydro Kit indoor
Systems Only
unit frame, or other grounded entities
Hydro Kit Unit Controller
of the building.
Indoor Unit Zone Controllers
•Never use a common multiple-core
communications cable. Each communications bus shall be provided a separate cable (i.e., between outdoor unit(s) and indoor
units; outdoor units and central controller(s)). If communications cables of separate systems are wired using a common multiplecore cable, it will result in a poor communications signal and unacceptable system operation.
•Position the power wiring a minimum of two (2) inches away from the communication cables to avoid operation problems caused
by electrical interference. Do not run both in the same conduit.
38
Due to our policy of continuous product innovation, some specifications may change without notification.
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ROUGHING-IN
Communications Cables
Communications Cable Between a Single Hydro Kit and a Unit Controller
Guidelines and Recommendations
•Only use LG provided three-core communications cable (provided
with the Hydro Kit) and the Unit Controller. Using field provided
cable may cause communications errors.
•Set the Hydro Kit operating parameters using DIP switches or by
setting up the Unit Controller.
NEVER splice, cut, or extend cable length with field provided cable. If the
length needs to be extended, use one (or more) 39 foot LG Cable Extension Kit (PZCWRC1) (sold separately). The maximum length of the cable
cannot exceed 164 feet.
Figure 31: Communication Cable Single Hydro Kit to Unit Control
•During roughing in the unit,
the female socket MUST BE
positioned at the Hydro Kit
Unit Controller location.
•The male plug-end of the communications cable must be located at the Hydro Kit indoor unit.
•Do not cut cable or extend cable
length. Violating these rules may
cause communications errors.
On All Hydro Kit Models
CN-REMO
LG Supplied
RD
YL
BK
Communications Cable Between a Multiple Hydro Kit Units and the Unit Controller
Although up to 16 Hydro Kits can be linked together and controlled as one
group. All Hydro Kits must be of the same model type. Do not mix K2 and
K3 models on the same communication cable! See Figure 32.
NEVER splice, cut, or extend cable length with field provided cable. If the
length of the cable between grouped units is greater than 32 feet, extend
the length using LG Extension Kit 39’ cable ( PZCWRC1 sold separately)
must be used. The maximum length of the cable cannot exceed 164 feet.
Guidelines and Recommendations
On All Hydro Kit Models
CN-REMO
On All Hydro Kit Models
On All Hydro Kit Models
CN-REMO
CN-REMO
LG
Supplied
LG Supplied Group Control Kit (PZCWRCG3)
Zone Controller
•If any Hydro Kits are to operate together in a group, use one (or
multiple) three-core Group Control Kits (sold separately) containing
extension and Y-splitter cables. One (1) group control cable kit for
each Hydro Kit 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 Hydro Kit and the
Unit Controller. Field provided cable will result in communications
errors.
•Before running cable, decide which Hydro Kit will be the “Master.”
The Hydro Kit Unit Controller cable will be routed and connected to
this master unit.
•Identify each Hydro Kit unit operating as a group as “Master” or
“Slave”. Adjust the pertinent DIP switch at each indoor unit.
•Use a daisy chain configuration and connect all of the group’s Hydro
Kits together starting at the “Master” unit as shown in Figure 32.
Figure 32: Communication Cable - Multi Hydro Kits to Unit Control
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39
Installation
Unit Controller
ROUGHING-IN
Communications Cables
Communications Cable Between the Hydro Kit and the Optional LG Remote Temperature Sensor
LG Remote Temperature Sensor
MULTI V Hydro Kit Installation Manual
The optional Remote Temperature Sensor is used in applications where the designer desires to control the Hydro Kit based on space temperature in lieu of leaving water temperature. The thermistor sensor is provided with 50 feet of wiring and a plug for quick connection to the
Hydro Kit unit. The communications cable cannot exceed 164 feet in total length.
Follow the guidelines below when routing Communication Cable between the Hydro Kit and the optional LG Remote Temperature Sensor
(PQRSTA0).
See Figure 36 for the location of the LG Remote Temperature Sensor socket on the Hydro Kit’s main PCB.
Guidelines
•Use only LG supplied communications cable shipped with the Remote Temperature Sensor. A communications error may occur if any other
cables are used.
•Locate the zone sensor on a flat interior, dry wall surface away from direct sunlight.
•Avoid placing sensor near significant heating / cooling sources.
•Do not cut or modify the length of the cable. If the cable is too long, roll it up and safely tie-wrap it in an “out of way” location.
•During cable rough-in, be careful not to damage the quick connect plug ends.
•Do not remove and then re-splice back together the quick connect plug-end.
•Route the male plug-end to the Hydro Kit unit.
•Thermostat should be placed at least 55 inches above the finished the floor if the designer or local codes does not specify differently.
•Do not place the Remote Temperature Sensor behind a door or along an entry way.
Hydro Kit and the Optional Solar Heating System Tank Sensor Wells and Sensors
Refer to the installation instructions for guidance with roughing-in the Hydro Kit sensor well, sensor bulb and cable. Instructions are found
in the Finish Up section of this manual, under the heading, “Indirect Hot Water Storage Tank Well and Sensor (Included with the Hydro Kit. If
Ordered Separately, Replacement PN EBG61325701)” on page 48.
For roughing-in guidance on 3rd party provided valves, relays, and other control devices, refer to the instructions found in the Accessories
Installation section starting on page 47 of this manual, as well as, instructions provided with the devices.
40
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FINISH UP
Accessory Installation
Independent Power Module (K2 Only)
The Independent Power Module is supplied with the Hydro Kit Medium Temperature (K2) unit. The Independent Power Module protects from
a plate heat exchanger burst. If a power outage occurs during normal operation, a plate heat exchanger burst could happen during oil-return
and defrosting cycle in cooling mode.
Wiring Pre-Check
•Verify power wiring and communication cable are all properly terminated.
•Test the line voltage wiring insulation. Conduct a Meg-ohm test reaching a value of 2.0M Ω or higher. Test the insulation resistance between
the Hydro Kit power wiring terminal block and ground using a DC meg-ohm tester (DC 500V).
Installation
Power Module
Power Module
Installation
1. Open the front panel of the Hydro Kit and the control box
cover.
2. Secure the power module to the wall of the Hydro Kit control
panel (Figure 33).
3. Route the power module wiring harness #2 through an opening
in the bottom of the control panel (Figure 34).
Harness #2
Harness #1
EEV
Valve
Harness #1
Harness #2
Figure 33: Securing Power Module to Control Panel
Figure 34: Routing Module Wiring
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41
FINISH-UP
Accessory Installation
Independent Power Module (K2) - Continued
•Incorrect wiring will lead to malfunction or damage of the independent power kit.
•Maintain 20 minutes of continuous power to the power module kit to ensure that EEV can close properly. This ensures that EEV is fully charged.
MULTI V Hydro Kit Installation Manual
Refer to the Independent Power Module Installation Manual for more detailed information regarding this system.
1.
2.
3.
4.
Turn power off at circuit breaker.
Disconnect the cable harness plug from the socket tagged CN-EEV.
Connect the Independent power module wire harness tagged CN-EEV/LOAD to the Hydro Kit EEV valve.
Connect the Independent power module dual plug wiring harness #2 tagged CN-EEV/MAIN) to the Hydro Kit’s PCB board sockets tagged
CN-EEV and CN-WRITE.
5. Replace the control panel cover and unit cabinet access panel.
6. Restore power to the Hydro Kit.
CN-WRITE
Harness 2
2
CN_EEV/MAIN
CN-EEV
CN_EEV/LOAD
Harness 1
1
To Hydro Kit’s EEV
Figure 35: Power Module Wiring Termination Detail
42
Due to our policy of continuous product innovation, some specifications may change without notification.
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EEV
FINISH UP
Accessory Installation
Hydro Kit Medium Temperature (K2) Control Panel Layout
HYDRO KIT MEDIUM TEMPERATURE (K2)
WATER
PUMP
(B)
4
5
L
N
BR
BL
3WAY VALVE
(B)
Dry Contact Board
Attachment
1
L
BR
2
L1
WH
3
N
BL
PUM P
(A)
11
L
BR
Remote Controller
Socket (CN-REMO)
Dry Contact Board
Socket (CN-CC)
12
N
BL
6
7
14
L1
BR
15
L2
WH
8
L
BR
9
L1
WH
10
N
BL
THERMOSTAT
(Default : 230V AC)
2WAY VALVE
(A)
13
3WAY VALVE
(A)
Not used
16
N
BL
17
L
BR
19
L1
WH
18
N
BL
20
L2
BK
Water Tank Temperature
Sensor Socket (2 left pins)
[2 Right Pins Are for Solar
Heating Circuit Water Temp
Sensor (optional)]
Optional LG Remote
Temperature Sensor (Wall
Mounted) (PQRSTA0)
Terminal Block
Installation
208-230/60/1
Power Connection
L(1), L(2), GND
Hydro Kit to Outdoor Unit
Communication Cable Terminals
3(A) and 4(B)
Figure 36: K2 Hydro Kit Control Panel Layout
Hydro Kit High Temperature (K3) Control Panel Layout
High Temperature Hydro Kit (K3)
Remote Controller Socket
(CN-REMO)
Water Tank Temperature
Sensor Socket (CN-TH4)
Dry Contact Connection
Dry1, Dry2, Com
Terminal Block Wiring
1
2
L
N
PUMP
(A)
208-230/60/1
Power Connection
L(1), L(2), GND
3
4
5
6
7
8
9
10
L
L1
N
L
N
L1
L2
3-WAY VALVE
(A)
THERMOSTAT
(Default : 230V AC)
Hydro Kit to Outdoor Unit
Communication Cable Terminals 3(A) and 4(B)
Figure 37: K3 Hydro Kit Control Panel Layout
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 Life’s Good” is a registered trademark of LG Corp.
43
FINISH UP
Accessory Installation
Hydro Kit Wall Mounted Controller
Mounting and Communications Cable
Terminations (For All Models)
MULTI V Hydro Kit Installation Manual
Procedure
1. Route the female plug-end of the Hydro Kit Wall Mounted Controller cable already located in the handy box or protruding from
the wall surface through the large hole on the back side of the
subbase.
2. Attach the Hydro Kit Wall Mounted Controller subbase to the
wall or handy box. Using the provided screws, insert through the
holes in the subbase and tighten screws to anchor (Figure 38).
•Seal all gaps, holes and other cavities behind the subbase
before mounting.
•If mounting the Hydro Kit Wall Mounted Controller over a
handy box, seal the holes in the handy box shell using spray
foam or similar insulating material approved for this use by
local code.
Be sure to always have powered off before installation of accessories.
Never operate Hydro Kit outside of the operational parameters as outlined in this manual and the product specifications.
Never touch wiring or install accessories with wet hands.
SCREW PLACEMENTS
ENTRY FOR WIRED
REMOTE CONTROLLER
SCREW PLACEMENTS
The Hydro Kit Wall Mounted Controller is designed to be surface mounted. Recessing the controller will cause the onboard temperature sensor
to misread the zone temperature. Refer to Table 24 in this manual for
proper wiring connection information.
3. Determine how the communications cable will be routed to the
controller. Choose either Back, Top or Right Edge (Figure 39).
4. If not already done, separate the controller body from the controller subbase.
5. Insert a small flat tip screw driver into one of the two slots along
the bottom edge of the subbase and gently turn clockwise to
depress the retainer tab (Figure 40).
6. With the tab depressed, gently pull on the bottom of the controller body. Repeat for the remaining tab.
•Take care not to damage the inside components when separating (Figure 40).
Figure 38: Hydro Kit Unit Controller Subbase
Figure 39: Attaching Remote Control Cable to Termination Points
Figure 40: Hydro Kit Controller Subbase Removal
44
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FINISH UP
Accessory Installation
7. If using the top right edge entry point, use needle nose pliers to
carefully break-off the tab as shown in Figure 40.
8. Route the cable through the appropriate entry point. Refer back
to Step 3.
9. If a back entry is selected, route the female plug-end of the Hydro Kit
Wall Mounted Controller cable already located in the handy box or
protruding from the wall surface through the large hole on the back
side of the subbase. Attach the subbase to the wall or handy box
using the appropriate screws or fasteners (Figure 38).
10.Level the controller and tighten screws on the subbase being
careful not to overtighten which may bend, stress, cause damage
to the PCB board.
11.Plug the male connector of the communications cable whip
attached to the subbase to the socket of the already roughed-in
communications cable (Figure 41).
12.Attach the controller body to the subbase. First insert the top
edge and lastly the bottom edge. Gently push on the frame of the
controller body along the bottom edge until you hear it snap into
place. Gently pull along the bottom edge to verify it is properly
seated (Figure 42).
Be sure to always have powered off before installation of accessories.
Never operate Hydro Kit outside of the operational parameters as outlined in this manual and the product specifications.
Never touch wiring or install accessories with wet hands.
•Do not install cable above 164 ft. This can cause communication
errors.
Attach from Top
Remote
Controller
Body
Sub-base
Controller Attached to
Subbase
Figure 42: Attaching Controller to Sub-base and to Wall
The Multi V 7-Day Programmable zone controller looks very similar to
the Hydro Kit unit controller. Before proceeding with installation verify that
you have to correct model controller in your possession. You can tell the
two controllers apart by the buttons on the panel. See Figure 43 for the
individual controller panels.
Hydro Kit Controller
Buttons
Multi V 7-Day Programmable Controller
Buttons
Figure 43: Comparison Hydro Kit and Multi V 7-Day Programmable
Controller Buttons
Due to our policy of continuous product innovation, some specifications may change without notification.
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45
Installation
Figure 41: Hydro Kit Unit Controller Communications Cable Termination Detail
FINISH UP
Accessory Installation
Terminating Group Controlled Hydro Kits
MULTI V Hydro Kit Installation Manual
If any of the Hydro Kits were specified to operate in unison, create a group control communications circuit between the Hydro Kits using
optional group control cable kits (purchased separately (PZCWRCG3) consisting of three (3) cables as follows:
—— One pigtail cable
—— One Y-cable
—— One 39 foot long extension cable segment
•Up to 16 Hydro Kits can be members of a group sharing control input from a single Hydro Kit controller.
•Each Hydro Kit group must be connected to the same outdoor unit.
•At the last Hydro Kit Slave unit in the group, a pigtail cable is not required.
•Hydro Kits within the same group must have the same DIP switch settings. The only DIP switch that can differ is the group control setting
switch, where one Hydro Kit will be the Master and the remaining Hydro Kits will be Slaves.
Procedure (Termination)
1. Before proceeding with group control cable terminations, verify power is off at all Hydro Kits effected.
2. Choose one Hydro kit of the group and designate it as the “Master” unit of the group.
—— Master designation is achieved by setting DIP switch #1 in the OFF position. Hydro Kits designated as Slave units will need DIP Switch
#1 placed in the ON position.
3. If not already recorded, record the “Master” status of this unit and identify all other units in the group as “Slaves”. Record the assigned
identity of each on the “Pre-Commissioning Device Configuration Worksheet” located at the end of this manual.
4. Starting with the Hydro Kit Master unit, plug in the male end of the pigtail cable into the CN-REMO socket.
5. Plug the male end of the extension cable coming from the previous Hydro Kit unit into the CN-REMO socket. Refer back to Figure 36
and Figure 37 for specific location of the CN-REMO sockets on each Hydro Kit chassis’ PCB.
6. Plug the Y-cable into the pigtail at each Hydro Kit; except for the last Slave Hydro Kit in the group, at which no Y-cable cable will be
needed (see Figure 44).
7. Connect two extension cable segments to each Y-cable, except for the Y-cable connected to the Master Hydro Kit.
8. At the Master Hydro Kit, connect one extension cable and the communications cable from the Controller to the Y- cable.
Master
Slave
Slave
Slave
Only Connect Serial Signal and GND Lines
Between Slave Hydo Kits
GND
Signal
12 V
Hydro Kit
Controller
Figure 44: Wiring Schematic - Hydro Kit Controller to Multiple Hydro Kits
46
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FINISH UP
Accessory Installation
Hydro Kit Circuit Water Pump Interlock Circuit Terminations
Refer to Figure 45 and Figure 46 for each respective Hydro Kit chassis when following the procedure for Circuit Water Pump Interlock termination points on the terminal block.
Be sure to always have powered off before installation of accessories.
Never operate Hydro Kit outside of the operational parameters as outlined in this manual and the product specifications.
Never touch wiring or install accessories with wet hands.
Total current draw of all connected devices provided by others shall not
exceed 5 Amperes.
Procedure
Installation
1. Verify the pump being installed was sized correctly considering
the system’s design flow rate and static head pressure.
2. If not already completed, install the pump and connect it to the
piping system.
3. Select a suitable pilot ready with a coil rated for 208-230/60/1
service.
4. Connect appropriately sized wiring per local and NEC Code between the pump starter, the pilot relay, and the Hydro Kit terminal
strip. See Figure 45.
Pilot Relay
WIRE TO TERMINALS 11 AND 12
ON MEDIUM TEMPERATURE (K2)
HYDRO KIT
Pump Motor
Starter or
Contactor
Pilot Relay
WIRE TO TERMINALS 1 AND 2
ON HIGH TEMPERATURE (K3) HYDRO KIT
Figure 46: (K2) Hydro Kit -- Heating/Cooling Terminal Block
Pump Motor
Starter or
Contactor
Figure 45: (K3) Hydro Kit -- High Temperature Terminal Block
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 Life’s Good” is a registered trademark of LG Corp.
47
FINISH UP
Accessory Installation
Indirect Hot Water Storage Tank Well
and Sensor (Included with the Hydro
Kit. If Ordered Separately, Replacement PN EBG61325701)
MULTI V Hydro Kit Installation Manual
Be sure to always have powered off before installation of accessories.
Never operate Hydro Kit outside of the operational parameters as outlined in this manual and the product specifications.
Never touch wiring or install accessories with wet hands.
•Installation of the Hot Water Storage Tank Sensor and well is not
necessary if the Hydro Kit will be used in applications that do not
include heating water in tanks.
•The sensor well and storage tank have to be located such that the
39 foot black sensor cable included with the Hydro Kit, reaches between the Hydro Kit PCB board and Sensor well location on the tank
while considering a proper routing path for the sensor cable.
•Choose a path for the Sensor cable that keeps it at least two (2)
inches away from power wires.
•Depending on the current draw of nearby wiring, the minimum clearance distance may have to be increased.
Tools Needed
•Electric drill
•Tap and drill bit properly sized to make a 1/2” FPT hole
•Thermo paste for the sensor well
Cable
Cable
= 39’
Indirect Water
Storage Tank
Figure 47: Indirect Hot Water Storage Tank Temperature Sensor
Schematic
Procedure
1. If the Indirect Water Storage Tank provided has a sensor well in the selected location, use it.
•If the Storage Tank does not have a sensor well, choose an appropriate position on the tank and install the well provided with the sensor.
2. Remove the sensor and cable from the well.
•Loosen and remove the keeping nut at the entry of the well housing.
•Remove the sensor from the well by gently pulling on the sensor cable.
3. Slide the keeping nut up the sensor wire so it will not get misplaced.
•Put the sensor, sensor cable and keeping nut assembly in a safe location.
4. If the Indirect Storage Tank has water in it, isolate the tank by closing shutoff valves and drain the tank.
5. The sensor well provided has a 1/2” MPT connection. Drill and tap a 1/2” FPT hole in the wall of the tank at an appropriate location.
•Depending on the working pressure of the system, choose the appropriate method to seal the sensor threaded connection.
If welding the sensor well into the tank:
•Insert the well into the thread hole and rotate till the threads on the neck bottom out.
•Weld the sensor to the tank and pressure test as necessary.
Installation without welding:
•Wrap the threads of the sensor well about eight (8) times with Teflon tape.
•Insert the well into the threaded hold in the tank wall.
•Turn clockwise until tight, using a socket or open-ended wrench.
6. Locate the sensor.
•Verify the keeping nut is on the sensor cable with the threads facing the sensor bulb.
48
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FINISH UP
Accessory Installation
Indirect Hot Water Storage Tank Well and Sensor (EBG61325701) - Continued
Installation
7. Apply a generous portion of Thermo-paste to the sensor and in the
well.
•Use enough to fill the air space between the sensor head and the
walls of the sensor well.
8. Push the sensor all the way into the well until it bottoms out.
•Fill any air gaps with Thermo-paste.
9. Slide the keeping nut down the sensor cable and thread it on the
sensor well.
10.Choose a route between the sensor well and the Hydro Kit unit for
the sensor lead where the cable is protected from damage, foot traffic; and extreme weather and temperature conditions.
11.Loosely secure the cable to the structure about every three (3) feet
with cable ties.
12.Avoid damaging the sensor cable, do not pull the ties too tight.
13.Route the sensor cable through the Hydro Kit casing and into the control
panel area.
•Where the cable passes through a hole with sharp edges, install field
supplied protective grommets.
14.Locate socket CN-TH4.
•Before plugging the male connector into the socket, verify unit
power is off.
•Inspect the leads and pins of the sensor cable plug. Look for bent
pins; and loose connections between the wire leads and the metal
pins in the plug.
15.Plug the sensor male plug-end into the CN-TH4 socket.
16.Lastly, verify the connection is secure.
Housing
Sensor Cable
Figure 48: Hot Water Storage Tank Sensor Cable Connection
Solar Heating System Hot Water Storage Tank Temperature Sensor
Well (Optional) Included with Solar Interface Kit PN #PHLLA (K2 Model Only)
If optional Solar Heating kit is used, install the sensor well from the
kit in a similar manner used to install the water tank temperature
sensor.
Be sure to always have powered off before installation of accessories.
Never operate Hydro Kit outside of the operational parameters as outlined in this manual and the product specifications.
Never touch wiring or install accessories with wet hands.
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 Life’s Good” is a registered trademark of LG Corp.
49
FINISH UP
Accessory Installation
Hydro Kit Thermostats (Optional Accessories)
Follow Table 10 below to assist with which thermostat options are available for use with each Hydro Kit. Refer to the added information below
the table regarding the Thermostat options.
Table 10: Hydro Kit Thermostats
Type
Power
1~230 V
Mechanical (1)
MULTI V Hydro Kit Installation Manual
1~24 V
1~230 V
Electrical (2)
1~24 V
Hydro Kit Unit
High Temperature Only (3)
Medium Temperature (4)
High Temperature Only (3)
Medium Temperature (4)
High Temperature Only (3)
Medium Temperature (4)
High Temperature Only (3)
Medium Temperature (4)
•Heating/Cooling Thermostat models must have “Mode Selection” feature to determine operation mode.
•Thermostat must be a manual changeover design and be able to accept separate heating and cooling temperature setpoints.
•Do not use the thermostat terminals to power external loads such as contactors, relays or any other type of control or electrical device. Doing
so will damage the unit control board.
•Cooling and heating signals must be sent immediately when the temperature condition is met. There can be no delay in trigger timing.
1.Use 1~230 V Thermostat for installation.
2.Some electro-mechanical thermostats have a time delay to protect the compressor, resulting in time lag between mode changes. Users
should refer to the Thermostat Installation Manual for any workarounds.
3.Setting temperature ranges through direct thermostat can be different from direct unit control. The heating set temperature should be
chosen within the setting temperature range of the unit.
Follow the procedure below to connect the thermostat to the Hydro
Kits.
Refer back to Figure 36 and Figure 37 for the Terminal Block connection locations.
Set the DIP switch #8 to the ON Position, otherwise the Hydro Kit will
not recognize the thermostat. The Hydro Kit Controller will display the
Thermostat icon and temperature control adjustment via the Hydro Kit
Controller will be disabled.
1. Disconnect power to the Hydro Kit.
2. Remove front cover of the unit and open the control box.
3. Identify the power specification of the thermostat to install.
•If installing a 208-230 V proceed to step 6.
•If installing a 1~24 V proceed to step 4.
4. Locate connecting cable A and C and disconnect (Figure 49).
5. Connect cable B and C.
6. For Hydro Kit Medium Temperature (K2) Thermostat locate the
terminal block in the Hydro Kit and connect the control wiring
from the thermostat as shown in Figure 36, terminals 17-20.
7. For Hydro Kit High Temperature, locate terminal block and connect wire as shown in Figure 37, terminals 7-10.
50
Figure 49: Control Box Cable Connections for Thermostat
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FINISH UP
Accessory Installation
Remote Temperature Sensor Installation (PQRSTA0)
The remote temperature sensor can be installed most places where
the occupant wants to measure the combined space temperature.
Follow the steps below for proper installation.
If the communications cable between the Hydro Kit and the location for the Remote Sensor have not been installed, refer to the
Roughing-In section “LG Remote Temperature Sensor” on
page 40.
Figure 50: Fixing screws into Remote Temperature Sensor
•Be sure to always power off Hydro Kit before installation of accessories.
•Never operate Hydro Kit outside of the operational parameters as
outlined in this manual and the product specifications.
•Never touch wiring or install accessories with wet hands.
Procedure
Installation
1. Locate the end of the communications cable for the Remote
Temperature Sensor that protrudes from the wall in the conditioned space.
2. If a handy box was not installed, mark the wall with two dots.
Locate the dots about 1 inch to the right of where the cable
protrudes from the wall.
•The two dots should be on a vertical axis about 2-3/8 inches
apart with one hole about 1” above the cable protrusion from
the wall and the other below.
•Insert one screw into the wall on each dot leaving about 1/8” of
screw shank showing.
3. Terminate the two communications cable leads at the screw
terminals on the back side of the Remote Sensor. Polarity does
not matter (CN_ROOM) (Figure 51).
4. Prepare the wall surface behind the sensor to eliminate any
chance of the sensor picking up a false reading.
•False readings can come from direct air and/or moisture
transfer from the wall cavity to the conditioned space through
an opening behind the sensor housing.
5. Seal all gaps, cracks, and holes in the wall surface and seal
around the communications cable penetration.
•Use a local code approved caulk or dry-wall compound.
6. Place the sensor casing directly over both the top and bottom
screws (see (1) on Figure 52).
•Slide the sensor housing downward on top of the two (2)
screws so that screw head fits snugly into the screw anchor at
the back of the unit (see (2) on Figure 52).
7. If the sensor housing is loose after hanging, remove housing
from screws, adjust screws again, and then re-hang.
•Repeat as needed, until sensor fits snug against the wall
surface.
Figure 51: Attaching Connector Wire to Remote Temperature Sensor
Figure 52: Attaching Remote Temperature Sensor
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51
FINISH UP
Accessory Installation
Remote Temperature Sensor Installation - Continued
8. At the Hydro Kit, remove the unit access panel and control panel
cover.
9. On the main PCB board locate the socket tagged CN_
ROOM.
10.Route the sensor wire through the bottom of the control panel
and push the plug-end of the remote sensor communications
cable into the CN_ROOM socket.
11.Re-install the control panel cover and the unit access panel.
To remove unit: Push unit in upward direction first so that screw
heads disengage from the back anchor and then gently pull unit
away from the screws (refer to Figure 52, on previous page).
MULTI V Hydro Kit Installation Manual
Hydro Kit Circuit 3-Way Domestic Water Valve Wiring Terminations
A Hydro Kit Circuit 3-way Domestic Water valve is required to alternate the flow of heated water from the Hydro Kit (or Solar Heating System Interface) between the indirect hot water storage tank and the portion of the water loop serving devices designed to heat the conditioned space. Follow
the valve manufacturer’s instructions for wiring termination guidance at the valve. The procedure below describes how to terminate the valve wiring
at the Hydro Kit..
Procedure
1. Take front access panel off of the Hydro Kit and remove the
control box cover.
2. Locate terminal block and connect wires as shown in the Table
for the specific Hydro Kit units as outlined in Figure 36 or Figure
37.
3. Re-install the control box cover and the unit access panel.
52
Be sure to always have powered off before installation of accessories.
Never operate Hydro Kit outside of the operational parameters as outlined in this manual and the product specifications.
Never touch wiring or install accessories with wet hands.
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 Life’s Good” is a registered trademark of LG Corp.
FINISH UP
Accessory Installation
Hydro Kit Circuit 2-Way Isolation Valve Connection - (Third Party Accessory)
2-way isolation valve is required to stop the flow of water to portions of the Hydro Kit’s water piping system when the Hydro Kit Medium Temperature unit is operating in cooling mode. Chilled water flow in these areas would cause damage to building materials, if condensate was
allowed to form on the surface.
1. Follow Manufacturer’s instructions for terminating wires at the valve.
2. Detach front cover of the unit and then remove the control box cover.
3. Locate terminal block and terminate the valve wiring as shown for Hydro Kit Medium Temperature unit in Figure 46.
4. Re-install the control box cover and the unit access panel.
Incorrect wiring can lead to condensation on the floor or other surface. This occurs if the Hydro Kit is operated in the cooling mode thereby creating
chilled water.
Dry Contact
Procedure
Figure 53 shows the termination of the Dry Contact control and monitoring interface (see diagram, terminals 1-4) to field provided binary
relays. Power to operate the Dry Contact is applied directly to the AC power block terminals 1 and 2.
1. Connect CN_DRY terminals 1 and 2 to a field provided binary contact. Its closure will enable (or disable) the Hydro Kit unit operation.
2. Connect CN_DRY terminal 3 to a light or relay that illuminates/closes if the Hydro Kit raises an operation fault code.
3. Connect CN_DRY terminal 4 to a light or relay that illuminates/closes when the Hydro Kit is operating.
4. If the installation specification indicates the Dry Contact will be powered from a remote source or after a third-party device is powered by
others; terminate the power wiring at the Dry Contact following Figure 54.
Figure 53: CN_DRY Connection to Control Unit
Figure 54: CN_DRY Connection to Direct External Source
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53
Installation
The Dry Contact unit provides interface flexibility to the controls engineer for indoor unit operation. The Dry Contact unit is designed to enable or disable normal Hydro Kit operations or determine occupancy for setback temperature setting through a binary input. A binary output
indicates if a system malfunction occurred. A field supplied binary signal could be triggered using a timer, keycard switch, door switch, motion
detector, or an occupancy sensor.
PRE-COMMISSIONING
Group Control Setup
Plan the Multi V System Central Control Addresses Assignments
Check with the building’s Chief Engineer and gather any preferences he may have. If there are no preferences follow the guidelines below:
Guidelines
•Hex assignments do not have to be assigned in any particular order, or an order defined by the routing of the communications cable between the Hydro Kits. In most cases, Hex addresses can be skipped.
•All members of a Hex Group are not required to be on the same Multi V Hydro Kit system.
•Addresses can be assigned at random, not in any particular order, and can be skipped.1
MULTI V Hydro Kit Installation Manual
Hydro Kit/Indoor Unit Central Control Address Assignments
A central control address is made up of two hexadecimal characters.
•The first character in the central control address is the Hex Group Identifier.
—— Possible Hex Group Identifiers (in order of lowest to highest) are 0.9 followed by A-F.
•The second character in the address is the Hex Member Identifier in a Hex Group.
—— Hex Member Identifiers (in order from lowest to highest) are also 0.9 followed by A-F.
Hex Address Assignment Limitations
1
D
Guidelines
•Hex Groups are limited to 16 members (see Figure 55).
•VRF Systems are limited to 16 Hex Groups.
•There is a limit of 256 possible Member Identifiers per Central Control.
(See Central Controller Communications Limitations below.)
First character is
the Hex Group
Identifier 0-F
(Example: Group 1)
Second character
is the Hex Member
Identifier 0-F
(Example: Group D)
Figure 55: Central Control Address Nomenclature
Multi V System Central Controller Communications Limitations
Each type of Central Controller device is designed to communicate with a limited quantity of Hydro Kits/indoor units. The quantity of Hydro Kits/
indoor units that can be connected to a single central control communications cable, therefore, will be defined by the central control device on
that cable with the smallest Maximum Hydro Kit/Indoor Unit/Energy
Recovery Ventilator (ERV) Quantity as shown in Table 11, to the right.
Table 11: Central Controller Indoor Unit Connection Limitations
Group Number
If the building operator wants to know which Hydro Kits/indoor units/ERV units
are on each water source unit, and multiple systems serve a building:
•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 at will or for example, can follow the room layout on each floor.
For each LG Central Controller product provided on the project, devise a
central control address schedule and assign a central control address to each
Hydro Kit(s), and EEV(s) units. Record this central control address for each
component in the column provided on the Device Configuration Worksheet
(located at the end of this manual).
Central Control Device
Maximum Hydro Kit/
Indoor
Unit/ERV Quantity
AC EZ
32
AC Smart II
64
AC Smart II with Expansion Kit
128
AC SMART Premium
128
LonWorks Gateway
64
BACnet Gateway
256
Advanced Control Platform
256
1
The exception to this is the AC EZ, unit! DO NOT skip addresses. Start with Hex address 0. Buttons have pre-assigned Hex addresses. If an address
is skipped, the associated button will do nothing.
54
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PRE-COMMISSIONING
Group Control Setup
Upload Central Control Address to Each Hydro Kit
Assign the designated Central Control address to each Hydro Kit using the attached Hydro Kit Unit Controller.
Power Up All Indoor Unit PCB’s
Turn the disconnect for each indoor unit to the ON position. DO NOT turn the Hydro Kit on (ON/OFF Button remains OFF).
During the following procedure, NEVER PUSH the ON/OFF (Enable operation) Button on the Hydro Kit Controller.
For Hydro Kits NOT Being Controlled as a Group
Procedure
1.
2.
3.
4.
Verify the Hydro Kit controller cable is plugged into CN-REMO socket on the Hydro Kit’s main PCB.
Using the controller, go to the setup Function 07.
Type in the Hex Central Control address that has been designated for the Hydro Kit.
Repeat Steps 1 through 3 for each Hydro Kit in the building.
For Hydro Kits Being Controlled as a Group
DO NOT push the ON/OFF button or enable the Hydro Kit unit operation at any time during this procedure.
11.Using the controller, go to the setup Function 07. Enter the Multi V System Central Control address designated for the Hydro Kit.
•Place DIP Switch No. 3 on the Hydro Kit PCB to the ON position.
12.Disable power to the Hydro Kit using the disconnect switch.
•Wait one (1) minute.
13.While power is off, unplug the Hydro Kit Unit Controller cable from the pigtail socket.
14.Plug the group control Y-cable back into the pigtail.
15.Restore power to that Slave Hydro Kit, and proceed to the next Slave Hydro Kit.
16.Repeat Steps 9 through 15 for each Slave Hydro Kit except the last one in the group. At the last Slave Hydro Kit the process is the same
except unplug the group control cable from socket CN-REMO on the Hydro Kit PCB board and plug the Hydro Kit Unit Controller cable
into the same socket.
17.After all Slave Hydro Kits have Central Control addresses assigned, go back to the Master Hydro Kit unit and restore power.
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 Life’s Good” is a registered trademark of LG Corp.
55
Installation
1. Before attempting to assign a Central Control address to any Hydro Kit units controlled as a group, choose which unit in the group will be
designated as the “Master” Hydro Kit and which Hydro Kits are going to be designated as “Slave” units.
2. From the Master Hydro Kit, remove the unit access panel and control panel cover to access the PCB.
3. Verify a group control pigtail cable is plugged into the CN-REMO socket on the Hydro Kit PCB. If it is not, plug the communications
cable pigtail into the CN-REMO socket at this time.
4. If the group control extension cable between the Hydro Kits is plugged into the Y-cable, unplug the extension cable from the Y-cable.
5. If not already completed, plug the Hydro Kit Unit Controller communications cable into the pigtail cable.
6. Using the controller, go to the setup Function 07. Type in the Multi V System Central Control address designated for the Master Hydro Kit.
7. Disable power to the Master Hydro Kit. Do not restore power to the Master Hydro Kit at this time! It will be restored in step 17.
8. If the Hydro Kit Unit Controller and associated communications cable has already been permanently mounted in place:
•Plug the Y-cable back into the pigtail and obtain another Hydro Kit Unit Controller with a communications cable.
•Continue programming the Slave Hydro Kit(s).
9. If necessary, power down the first Slave Hydro Kit unit.
•Disconnect the Y-cable from the pigtail.
•Verify that DIP switch #1 is in the OFF position while loading the Central Control address.
10.Plug the Hydro Kit Unit Controller communications cable into the socket on the pigtail cable.
PRE-COMMISSIONING
DIP Switch Setting - Hydro Kit Medium Temperature
DIP Switch Settings for Hydro Kit Medium Temperature (K2)
Figure 56 along with Table 12 below outlines the correct positioning
of each DIP switch depending on the functioning of the Hydro Kit
unit. These settings are specific to the Hydro Kit Medium Temperature (K2) unit.
MULTI V Hydro Kit Installation Manual
Always turn off electric power before adjusting DIP switch settings. There
is a risk of electric shock if not turned off.
Figure 56: Hydro Kit Medium Temperature DIP Switch Block
Guidelines
•DIP switch in the DOWN position is OFF. If it is in the UP position it
is ON (as seen in Figure 56).
•Always set DIP switch #6 to DOWN/OFF.
•Follow DIP switch settings in Table 12 below precisely or unit may
not operate properly.
Table 12: Hydro Kit Medium Temperature DIP Switch Settings and Description
•Do not operate the Hydro Kit unit in Freeze avoidance mode without
the proper amount of antifreeze chemicals added to the water circuit.
•Do not add any antifreeze while operating in the heating mode.
56
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 Life’s Good” is a registered trademark of LG Corp.
PRE-COMMISSIONING
DIP Switch Setting - Hydro Kit High Temperature
DIP Switch Settings for Hydro Kit High Temperature (K3)
Figure 57 along with Table 13 below outlines the correct positioning
of each DIP switch depending on the functioning of the Hydro Kit
unit. These settings are specific to the Hydro Kit High Temperature
(K3) unit.
Always turn off electric power before adjusting DIP switch settings. There
is a risk of electric shock if not turned off.
Guidelines
Figure 57: Hydro Kit High Temperature DIP Switch Block
•DIP switch in the LEFT position is OFF. If it is in the RIGHT position it is ON (as seen in Figure 57).
•Never place DIP switch #2 RIGHT/ON and DIP switch #3 LEFT/
OFF.
•Follow DIP switch settings in table precisely or unit may not operate properly.
Installation
Table 13: Hydro Kit High Temperature DIP Switch Settings and Description
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 Life’s Good” is a registered trademark of LG Corp.
57
PRE-COMMISSIONING
Installer Setting Configuration
How to Enter Installer Setting Mode
During system setup, the Installer Setup Mode must be initiated in order to set detailed functionality of the Remote Controller. This procedure
is used to customize the Hydro Kit settings.
This section will describe entering Installer Setting Mode, give a summary of each function and its corresponding code and describe the common settings needed to complete Hydro Kit configuration. For a complete description of all buttons and icons on the Hydro Kit Wall Mounted
Controller see, “Hydro Kit (K2, K3) Wall Mounted Controller Operation” on page 70.
MULTI V Hydro Kit Installation Manual
Failure to correctly configure functionality through the Installer Setup can cause problems to the unit, user injury or property damage. Configuration
should be done by a certified installer (technician). Non-certified technical tampering can result in voiding of warranty to the unit.
Entering Installer Setting Mode
1. Press and hold Function Setting button for 3 seconds to place unit into Installer Setting Mode.
•Controller display will initially show the first function code and value (example: 01:01) at the bottom of the LCD screen (see Figure 58).
2. Press Function Setting button repeatedly to cycle through each function code as needed for configuration.
3. Refer to Table 14 for function code descriptions and their correct code values.
Figure 58: Entering Installer Setting Mode
58
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PRE-COMMISSIONING
Installer Setting Function Codes
Installer Setting - Function Codes
Table 14 outlines the various customizable functions available to the Hydro Kit, along with their corresponding code values. Use the Actual
Low/Actual High Comments columns to log additional anomalies or comments related to the specific function code.
•All temperature values are stated in Fahrenheit.
•Altitude of region might impact Hydro Kit’s ability to reach stated temperatures. Unit capability is rated at sea level.
Table 14: Installer Setting - Function Codes and Parameters
Default
Disable 3 Minute Delay
02:01
01
-
03:01
01 : NOT connected
02 : Connected
-
04:01
01 : Celsius
02 : Fahrenheit
-
05:02
01 : Air Temperature
02 : Leaving Water Temperature
-
06:01
01 : Auto Start OFF
02 : Auto Start ON
-
07:00
00 ~ FF
-
08:00
00 : Slave
01 : Master
-
Water Pump Test Run
09:00
01 : Set
Zone Temperature Setpoint
(Heating Mode)
13:030:016
75 ~ 86
: Upper Limit of setting range
60 ~ 71
: Lower Limit of setting range
Leaving Water Temperature
Setpoint
(Heating Mode)
14:080:046
22 ~ 76
: Upper Limit of setting range
86 ~ 114
: Lower Limit of setting range
Setting Water
(DHW) Tank Water
Temperature Setpoint
15:080:046
122 ~ 176
: Upper Limit of setting range
86 ~ 114
: Lower Limit of setting range
Setting Outdoor Temp. Range
Water Temperature Reset
23:-10:015
50 - 68
: Upper Limit of setting range
-4 ~ 41
: Lower Limit of setting range
Setting Indoor air Temp. Range
(Weather-dependent operation)
24:021:016
68 ~ 86
: Upper Limit of setting range
60 ~ 66
: Lower Limit of setting range
Setting leaving water Temp.
(Weather-dependent operation)
25:080:046
149 ~ 176
: Upper Limit of setting range
104 ~ 129
: Lower Limit of setting range
Remote Air Sensor Connection
Celsius/Fahrenheit Switching
Setting Temperature Selection
Auto Dry Contact
Address Setting
Override Setting
Setting start/maintain time
(Disinfection Operation)
DHW Tank Temperature
Deadband Setpoint*
(Lower Limit)
26:000
Value #1
00 : Disable
01 : Enable
Value #2
Actual Low/Actual High
Comments
Installation
Function
-
26:006:023
01~07 : Starting Date
(01:Sun, 02:Mon, ····, 07:Sat)
00~23 hours
: Starting Time in 24 hours
27:070:010
104 ~ 129
: Maximum heating Temp.
05~60 min
: Maximum heating duration
Due to our policy of continuous product innovation, some specifications may change without notification.
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59
PRE-COMMISSIONING
Function Codes - Common Settings
Table 14: Installer Setting - Function Codes and Parameters (Continued)
Function
Default
Value #1
Value #2
28:005:080
33 ~ 68
: Temp. gap from Value #2
122 ~ 176
29:003:000
35 ~ 39
00~01
2b:030
5 ~ 95 min (step: 5 min)
-
2b:180:020
0 ~ 600 min (step: 30 min)
20 ~ 95 min (step: 5 min)
Change Thermal ON/OFF
Air Temperature.
2E:00
00~03
-
Change Thermal ON/OFF
Leaving Water Temperature
2F:00
00~03
-
DHW Tank Temperature Setpoint
Freeze Protection Setpoint
MULTI V Hydro Kit Installation Manual
DHW Water Heating Timers
Program Version
30:***
Display Version Number
Actual Low/Actual High
Comments
-
* Deadpan is the difference between the upper and lower limit setpoints and the temperature value is in Fahrenheit.
Customer is responsible for maintaining the quality of water in the water circuit.
Function Code Descriptions and Common Settings
Table 15 gives a brief description of each Function Code for both Hydro Kit models. Refer to this table, along with Table 14 when customizing
the settings through the Installer.
Table 15: Common Function Code Descriptions for Hydro Kits K2 and K3
Function Code
Description
Common Settings
02 - Disable 3 Minute Delay
This function is only used for an inspection in a factory.
03 - Remote Air Sensor Connection
Remote Air Sensor is connected to the unit and controls by room air
temperature.
04 - Celsius/Fahrenheit Switching
Temperature can be switched to read Celsius or Fahrenheit.
Unit can be operated either by air temperature or water temperature.
05 - Setting Temperature Selection
Air temperature can only be enabled in conjunction with Remote Air
Sensor Connection if enabled and Function Code 03 is set as 02.
06 - Auto Dry Contact
Allows the Dry Contact to operate under Auto Run Mode or Manual
Mode with Remote Controller. If thermostat is used, value should be
changed from “2” to “1”.
07 - Address Setting
If Central Controller is installed, address assigning can be set through
this function.
08 - Override Setting
Overrides Master/Slave selection functionality to prevent the unit’s
various mode operation.
Example: If the unit is set as the Slave, it blocks the ability to switch
the unit to the opposite operating mode (such as cooling/heating).
60
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PRE-COMMISSIONING
Function Codes - Common Settings
Table 15: Common Function Code Descriptions for Hydro Kit Chassis 2 and Chassis 3 (Continued)
Function Code
Description
Once water pipe has been installed, Water Test Run Mode is performed
to check functioning of water circulation.
09 - Water Pump Test Run
Assign temperature setpoint for air temperature in heating mode.
13 - Zone Temperature Setpoint
(Heating Mode)
14 - Leaving Water Temperature
Setpoint (Heating Mode)
This is only available when Remote Air Temperature Sensor is
connected. Accessory PQRSTA0 should be installed. Function Code 03
must be set properly.
Assign heating setpoint temperature range when leaving temperature is
selected as setting temperature.
Assign heating setting temperature range of water tank leaving water.
This is only available when DHW tank temperature sensor is installed.
DHW tank and DHW tank kit should be installed. DIP Switch #2 and #3
should be set properly.
Due to our policy of continuous product innovation, some specifications may change without notification.
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Installation
15 - Setting Hot Water (DHW) Tank
Water Temperature Setpoint
61
PRE-COMMISSIONING
Function Codes - Hydro Kit Medium Temperature
Temperature Range Setting for Hydro Kit Medium Temperature
The following Functional Codes are available for the Hydro Kit Medium Temperature.
Function Code 11 - Setting Air Temperature in Cooling Mode
Set air temperature range in cooling mode.
MULTI V Hydro Kit Installation Manual
Setting is only available when Remote Air Temperature Sensor is connected.
•Install PQRSTA0 (Remote Air Temperature Sensor).
•Set Function Code 03 properly.
Function Code 12 - Setting Leaving Water Temperature Cooling Mode
When Leaving Water Temperature is chosen, determine cooling setting temperature range.
Moisture on the Floor Can Occur
•Keep Leaving Water Temperature higher than 60°F when unit is operating in cooling mode. If not, condensation will occur on the floor.
•If floor is in a humid environment, do not set leaving water temperature below 64°F.
Water Condensation on the Radiator
•Cold water might not flow to the radiator, while unit is operating in cooling mode. Condensation on radiator may occur if cool water enters into
the radiator.
Function Code 13 - Setting Air Temperature in Heating Mode
Determine heat temperature setting range when air temperature is selected as setting temperature.
Setting is only available when Remote Air Temperature Sensor is connected.
•Install PQRSTA0 (Remote Air Sensor).
•Set Function Code 03 properly.
Function Code 14 - Setting Leaving Water Temperature in Heating Mode
When Leaving Water Temperature is chosen, determine heating setting temperature range.
Function Code 15 - Setting Leaving Water Temperature in Heating Mode
When Leaving Water Temperature is chosen, determine heating setting temperature range.
Setting is only available when DHW Tank temperature sensor is installed.
•Install DHW tank and DHW tank kit.
•Set DIP Switch #2 and #3 properly.
62
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PRE-COMMISSIONING
Function Codes - Hydro Kit Medium Temperature
Temperature Control Parameter Setting for Hydro Kit Medium Temperature
The following Function Codes are used to set weather-dependent
operations. Refer to Figure 59 for an example of this function.
Function Codes 22 - Setting Cut-Off Temperature in
Cooling Mode (FCU Setting Included)
Determine leaving water temperature when the unit is turned off.
This function code is used to prevent condensation on the floor while
Hydro Kit is in cooling mode.
•Value #1: Cut-Off Temperature. Value #1 is read by the unit when
Value #2 is set to ‘00’ (i.e., FCU is installed).
•Value #2: FCU Installed/not installed.
‘00’ = FCU Installed;
‘01’= FCU NOT Installed.
FCU Installation
•If FCU is used, 2-way isolation valve is installed and connected to
the Main PCB Assembly 1.
•If Value #2 is set to ‘00-, and FCU or 2-way isolation valve is NOT
installed; unit will not operate correctly.
Weather-dependent operation is applied for heating mode only!
Function Codes 23, 24, and 25 - Setting Weather-Dependent
Operation
The unit will automatically adjust target temperature (leaving water
or room air) based on outdoor air temperature.
•Value #1 and Value #2 of Function Code 23: Range of outdoor air
temperature.
•Value #1 and Value #2 of Function Code 24: Range of indoor room
air temperature.
•Value #1 and Value #2 of Function Code 25: Range of auto-adjustable target leaving water temperature.
Due to our policy of continuous product innovation, some specifications may change without notification.
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63
Installation
Figure 59: Value #1 and Value #2 Function Codes for Setting WeatherDependent Operation
PRE-COMMISSIONING
Function Codes - Hydro Kit Medium Temperature
Temperature Control Parameter Setting for Water Heating Operation Hydro
Kit Medium Temperature
MULTI V Hydro Kit Installation Manual
Function Codes 28 and 29
These two functional codes set control parameters for the sanitary
water heating operation.
•Value #1 of Function Code 28: Temperature range or setpoint as
input from Value #2 of Function Code 28.
•Value #2 of Function Code 28: Maximum temperature.
—— Example: If Value #1 is set as ‘5’ and Value #2 is set as ‘80’,
the water tank heating will be started when the water tank
temperature is below 75°C (167°F).
•Value #1 of Function Code 29: Temperature range or setpoint from
target DHW temperature.
•Value #2 of Function Code 29: Determines heating demand priority
between DHW tank heating and under floor heating.
—— Example: If target temperature is set as ‘50’ and Value #1 is
set as ‘3’, then water tank heating will be turned off when the
water temperature is above 53°C (127°F). Water tank heating
will kick on when water temperature is below 50°C (122°F).
—— Example: If Value #2 is set as ‘0’, that means heating priority
is on DHW heating. Note that under floor heating can not take
place while DHW heating is priority. If Value #2 is set to ‘1’,
heating priority will then focus to under floor heating and in this
case DHW tank can not be enabled if under floor heating is set
as the priority.
If the Hot Water DHW icon is displayed on the remote controller,
DHW is enabled. It can be enabled via manual button input or
scheduled programming.
Function Code 2B
This function code sets DHW heating timers. Determine time duration, operation time and stop time of the DHW tank heating.
•Value #1 of Function Code 2B: Sets how long DHW tank heating
can be continued.
•Value #2 of Function Code 2B: Set how long DHW tank is stopped
(non-heating mode). This function is also used to cycle on and off
time spans for the DHW tank heating cycle.
•Refer to Figure 60 for examples of a timing sequence chart.
Figure 60: DHW Tank Heating Time Diagram
64
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PRE-COMMISSIONING
Function Codes - Hydro Kit Medium Temperature
Temperature Control Parameter Setting for Sanitary Water Heating Operation
Hydro Kit Medium Temperature - Continued
Function Code 2C - Setting Water Flow Rate
Setting the value determines the temperature range of the input and output water flow rate. Value #1 of Function Code 2C: Water flow rate
which flows to the Hydro Kit. Refer to Table 16 for settings.
Table 16: Water Flow Rate Setting Value
Water Flow Rate
(l/min)
50
45~50
55
51~55
60
56~60
65
61~65
70
66~70
75
71~75
80
76~80
85
81~85
90
86~90
92
91~92
Installation
Setting Value
Function Code 2E and 2F
Changing Thermal ON/OFF Temperature gap. Refer to Table 17 and Table 18 for the two types of thermal temperature values.
Table 17: Room Air Temperature
Table 18: Leaving Water Temperature and DHW Temperature
Thermal ON
Thermal OFF
0
-0.9°F (-0.5°C)
2.7°F (1.5°C)
1
7.2°F (4°C)
10.8°F (6°C)
2
3.6°F (2°C)
7.2°F (4°C)
3
-1.8°F (-1°C)
1.8°F (1°C)
Thermal ON
Thermal OFF
0
-3.6°F (-2°C)
3.6°F (2°C)
1
-10.8°F (-6°C)
7.2°F (4°C)
2
-3.6°F (-2°C)
7.2°F (4°C)
3
-1.8°F (-1°C)
1.8°F (1°C)
Function Code 30
Displays Remote Controller Program Version when selected.
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65
PRE-COMMISSIONING
Function Codes - Hydro Kit High Temperature
Temperature Range Setting for Hydro Kit High Temperature
The following Functional Codes are available for the Hydro Kit High Temperature.
Function Code 13 - Zone Temperature Setpoint
Assign temperature setpoint for air temperature in heating mode.
This is only available when remote air temperature sensor is connected. Accessory PQRSTA0 should be installed. Function Code 03 must be set
properly.
MULTI V Hydro Kit Installation Manual
Function Code 14 - Hydro Kit Leaving Water Temperature Operating Range
Assign heating operating temperature range when leaving temperature is selected.
Function Code 15 - Setting Water (DHW) Tank Temperature Operating Range
Assign heating operating temperature range of DHW tank.
This is only available when DHW tank temperature sensor is installed. DHW tank and DHW tank kit should be installed. DIP Switch
#2 and #3 should be set properly.
Weather-dependent operation is only available for Heating Mode.
66
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PRE-COMMISSIONING
Function Codes - Hydro Kit High Temperature
Temperature Control Parameter Setting for Hydro Kit High Temperature
The following Function Codes are used to set weather-dependent
operations. Refer to Table 15 for an example of this function.
Function Codes 23, 24, and 25 - Setting WeatherDependent Operation
The unit will automatically adjust target temperature (leaving water
or room air) based on outdoor air temperature (Figure 61).
•Value #1 and Value #2 of Function Code 23: Range of outdoor air
temperature.
•Value #1 and Value #2 of Function Code 24: Range of indoor room
air temperature.
•Value #1 and Value #2 of Function Code 25: Range of auto-adjustable target leaving water temperature.
The Disinfection Operation mode is used to kill and prevent germs
and bacteria inside the Domestic Hot Water tank (Figure 62). Disinfection is only done in the (K3) Hydro Kit. Refer to Table 14 for an
example of date and time scheduling.
•Value #1 of Function Code 26: Enabling or disabling disinfection
operation mode. ‘00’ for placing “OFF” - disabled setting and ‘01’
for placing “ON” - enabling setting.
•Value #2 of Function Code 26: Scheduling the disinfection function
days. Days of the week are given a numeral value. Example: ‘01’
for Sunday, ‘02’ for Monday, … , and ‘06’ for Saturday.
•Value #3 of Function Code 26: Scheduling the disinfection function
time. Time is given numerical values and follows military 24-hour
schedule. Example: ‘00’ for 0:00am (midnight), ‘01’ for 01:00am, ...,
‘22’ for 10:00pm, and ‘23’ for 11:00pm.
DHW Heating Must Be Enabled
Figure 61: Value #1 and Value #2 Function Codes for Setting WeatherDependent Operation
Figure 62: Scheduling Disinfection Operation Based on Date and Time
•DHW heating must be enabled, in order for the disinfection mode to
function. Even if you set Value #1 of Code 26 to ‘01”,
DHW heating (disabled) will override the Code function.
Function Code 26
•If Value #1 is set to ‘00’ (OFF), you will not be able to Values #2 or
#3 (Date and Time).
•If Value #1 is set to ‘01’ (ON), Value #2 is displayed at the position of
Value #1 and Value #3 is displayed at the position of Value #2 due to
the limited width of the control panel display.
Due to our policy of continuous product innovation, some specifications may change without notification.
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67
Installation
Function Codes 26 and 27: Setting Disinfection Operation
PRE-COMMISSIONING
Function Codes - Hydro Kit High Temperature
Temperature Control Parameter Setting for Hydro Kit High Temperature Continued
Function Codes 28 and 29
These two functional codes set control parameters for the DHW
heating operation.
MULTI V Hydro Kit Installation Manual
If the Hot Water DHW icon is displayed on the remote controller,
DHW is enabled. It can be activated through manual button input or
scheduled programming (Figure 64).
•Value #1 of Function Code 28: Temperature range or setpoint as
input from Value #2 of Function Code 28.
•Value #2 of Function Code 28: Maximum temperature.
—— Example: If Value #1 is set a ‘5’ and Value #2 is set as ‘80’,
the water tank heating will be started when the water tank
temperature is below 167°F (75°C).
•Value #1 of Function Code 29: Temperature range or setpoint from
target DHW temperature.
•Value #2 of Function Code 29: Determines heating demand priority
between DHW tank heating and under floor heating.
—— Example: If target temperature is set as ‘50’ and Value #1 is
set as ‘3’, then water tank heating will be turned off when the
water temperature is above 127°F (53°C). Water tank heating
will kick on when water temperature is below 122°F (50°C).
—— Example: If Value #2 is set as ‘0’, that means heating priority
is on DHW heating. Note that under floor heating can not take
place while DHW heating is priority. If Value #2 is set to ‘1’,
heating priority will then focus to under floor heating and in this
case DHW tank can not be enabled if under floor heating is set
as the priority.
Figure 64: Hot Water DHW Icon on Remote Controller
Function Code 2B
This function code sets DHW heating timers.
Determine time duration, operation time and
stop time of the DHW tank heating.
•Value #1 of Function Code 2B: Sets how
long DHW tank heating can be continued.
•Value #2 of Function Code 2B: Set how
long DHW tank is stopped (non-heating
mode). This function is also used to cycle
on and off time spans for the DHW tank
heating cycle.
•Refer to Figure 63 for examples of a timing
sequence chart.
Figure 63: DHW Tank Heating - Time Duration and Time Spans
68
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PRE-COMMISSIONING
Function Codes - Hydro Kit High Temperature
Temperature Control Parameter Setting for Hydro Kit High Temperature Continued
Function Codes 2E and 2F
Changing Thermal ON/OFF temperature and temperature gap. Refer to Table 19 and Table 20 for the two types of thermal temperature values.
Table 19: Room Air Temperature
Thermal ON
Thermal OFF
0
-0.9°F (-0.5°C)
2.7°F (1.5°C)
1
7.2°F (4°C)
10.8°F (6°C)
2
3.6°F (2°C)
7.2°F (4°C)
3
-1.8°F (-1°C)
1.8°F (1°C)
Table 20: Leaving Water Temperature and Indirect Storage
Tank Temperature
Thermal ON
Thermal OFF
0
-3.6°F (-2°C)
3.6°F (2°C)
1
-10.8°F (-6°C)
7.2°F (4°C)
2
-3.6°F (-2°C)
7.2°F (4°C)
3
-1.8°F (-1°C)
1.8°F (1°C)
Function Code 30
Displays Remote Controller Program Version when selected.
Installation
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69
UNIT OPERATION
Hydro Kit (K2, K3) Wall Mounted Controller Operation
Figure 65 shows the Hydro Kit Wall Mounted Controller display screen
(top) and panel (bottom). Note that although the image shows all available display icons, they will not be displayed all at once while your Hydro
Kit is in operation. Use Table 21 for a description of the functionality of
each Panel button when operating and configuring the Hydro Kit unit.
Figure 65: Hydro Kit Wall Mounted Controller Display and
Panel Functionality
MULTI V Hydro Kit Installation Manual
Table 21: Hydro Kit Wall Mounted Controller Panel Buttons - Function
Number
Function
1
Display Screen
2
Change Temperature Button
3
Water Heating Enable / Disable Button
4
Power Button
5
Operation Mode Selection Button
6
Silent Mode Selection Button*
7
Temperature Setting Mode Button
8
Temperature View Mode Button
9
Function Setting Button
10
Programming Button
11
Direction Button (Up, Down, Left, Right)
12
Set (OK) / Clear Button
13
ESC Button
Table 22 describes each Hydro Kit Wall Mounted Controller display icon.
Depending on the Hydro Kit model, not all icons may display or be functional.
Table 22: Hydro Kit Controller Display Icon Descriptions
Icon
Function
Icon
Function
Icon
Function
Cooling (K2 model only)
Electric Heater (2) *
Defrost
Heating
Water Tank Electric Heater*
Water Pipe Anti-freezing
Weather-Dependant Heating
Water Pump
Water Tank Disinfection*
Space Temperature
Solar Thermal Circulation
Pump
Outdoor Unit
Water Inlet Temperature
Water Tank Heating Enable /
Disable
Water Outlet Temperature
Water Tank Heating
(Heat Pump Model Only)
Function Not Available
Silent Mode ON / OFF*
Operation Malfunction - Call Service
Thermostat
Water Tank Temperature
Operating in Emergency Heat Mode –
Call Service
Electric Heater (1)*
Solar Heating Temperature
Central Controller
Child Lock
*Function may not operate nor display.
70
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UNIT OPERATION
Emergency Operation
The following function buttons can still be operated during emergency operation of each of the Hydro Kits.
(*) Temperature measured by failed sensor is displayed as ‘--’
(**) Note that the unit cannot be turned off by setting the temperature
at the remote controller. It is only turned off by the thermostat signal.
Power ON/OFF
Button
Temperature View
Mode button (*)
Change Temperature
Button (**)
Operations and Maintenance
Water Heating
Enable / Disable
Button
The following function buttons cannot be used during emergency operation of each of the Hydro Kits.
Operation Mode Selection
Button
Programming
Button
Temperature Setting Mode
Button
Simultaneous Error Codes or Faults
There may be cases where multiple errors or faults will be tripped at the same time, or closely follow each other. At this point, the unit will
default operation and limit functionality based on the most severe fault. For example, if there is a slight operational fault but a major fault also
trips, the unit will operate at the safest level that it can during the major fault incident. As an example, the hot water heating might not work in
an Emergency Operation mode due to a more severe fault that prevents it from warming. You might need to check the Domestic Hot Water
(DHW) sensor and related wiring to trace any troubleshooting issues.
If the Hydro Kit is operating in Emergency (Safe) Mode, automatic restart is disabled. If there is a loss of power during Emergency Mode; the
unit must be re-started manually. Under normal operating conditions, the
Hydro Kit is designed to automatically start up (reboot) once power is
restored.
Due to our policy of continuous product innovation, some specifications may change without notification.
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71
MAINTENANCE
Seasonal (K2, K3)
Maintenance
Table 23 outlines the timeline of maintenance that should be followed for the Hydro Kit. This maintenance table applies to both Hydro Kit
Chassis.
•When following the table maintenance schedule, you might want to make copies of this table and then enter the date that maintenance was
completed in the Date Maintenance Performed column.
Table 23: Maintenance Scheduling Table
Scheduled Time
MULTI V Hydro Kit Installation Manual
Monthly
Maintenance Procedure
Date Maintenance
Performed
Verify system water level is correct.
Purge any air from the system using the manual air vent.
Check for water leaks in the system.
Test the circulating water loop for proper levels of water
treatment chemicals and anti-freeze.
Quarterly
Verify the strainer is clean.
Check the pump, valve stems, and pipe connections for
leaks.
Check refrigerant pipe and water pipe insulation for tears
or other damage that exposes cold surfaces that produce
condensation.
Replace insulation that is wet and repair as needed.
Annually
Verify the flow switch is operating correctly.
Operation Test
Flow Switch Error Troubleshooting - CH14
The following troubleshooting steps should be taken when checking Flow Switch issues.
•Check whether operation of water pump is normal.
•Check for blockage inside water pipe.
•Refrigerant strainer cleaning
•Valve locked
•Valve malfunction
•Air remaining
•Check for flow switch issue.
•Flow switch malfunction
•Unknown operation
•Flow switch disconnection
72
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HYDRO KIT ACCESSORIES
Table 24: LG Included Accessories
Accessory
Model No.
Hydro Kit
Model
Connection
Hydro Kit Wall Mounted
Controller1
AKB73355703
K2, K3
CN-REMO
PRIP0
K2
CN-WRITE &
CN-EEV
Independent Power
Module1
Description
Remote wall mounted controller with
33 foot communications cable.
K2, K3
Indirect Hot Water
Storage Tank Sensor1,3
EBG61325701
K2, K3
CN-TH4 (Boost) Water storage tank sensor.
Refrigerant Strainer4
MJC57132402
K2, K3
50 mesh; install on inlet pipe to heat
exchanger.
1
3
2
4
Monitors the Hydro Kit indirect water
storage tank temperature.
Keeps large particulate from entering
the heat exchanger.
Must have contacts rated for 208-230/60/1.
1” FPT both ends
Table 25: LG Optional Accessories (sold separately)
Accessory
Model No.
Hydro Kit
Model
Connection
Description
Use
Extends the length of the Hydro
Kit Wall Mounted Controller
communications cable beyond
39 feet (cannot be used to
extend tank sensor cable
length).
Monitors a third party solar
heating system’s water circuit
temperature and controls the
flow of solar heating system
water to the indirect water
storage tank.
Wired Remote Extension Cable1
PZCWRC1
K2, K3
---
39’ communications extension cable.
Solar Heating System
Interface Kit
PHLLA
K2
CN-TH4(Solar)
Kit includes solar heating system
tank sensor/cable and tee fitting
sensor well.
Ancillary (Solar)
Heating System Tank
Replacement
Sensor1,2,4
MEG61846102
K2
CN-TH4 (Solar)
Solar heating water storage tank
sensor with 39 feet of cable and
plug connector.
Monitors the solar heating system
water circuit temperature.
Remote Temperature
Sensor
PQRSTA0
K2, K3
CN-ROOM
Sensor with 50’ communications cable
and plug connector.
Monitors and/or controls (optional)
the Hydro Kit based on the
conditioned space temperature.
Dry Contact3
PQDSB1
K2, K3
CN-CC
Must use LG provided communications cable (included).
Field supplied thermo paste required.
3
Maximum combined current draw of all connected accessories must be equal to or less than 5 Amps
@ 208-230/60/1.
1
Mounts inside the unit cabinet and
Enables/disables operation from a
provides a external binary signal
remote generated binary signal.
control interface.
4
This sensor is included when ordering the PHLLA Solar Heating Interface Kit.
2
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73
Operations and Maintenance
MEG61846102
Mounting for the indirect hot water
Indirect Heating
storage tank sensor complete
Tank Wall with 39 feet of cable with plug
connector.
Must use LG provided communications cable (included).
Maximum combined current draw of all (field provided) connected accessories must be equal to or
less than 5 Amps @ 208-230/60/1.
Schedules, sets operational
parameters and monitors
system.
Backup power to close EEV valve if
Closes EEV if power outage occurs
power failure occurs during Multi
during defrost or oil return.
V defrost or oil return.
Ancillary (Solar)
Heating System Tank
Inlet Pipe
Use
Hydro Kit Accessories
Table 26: Third Party Accessories (sold separately)
Accessory
Hydro Kit Circuit Water
Pump Interlock1
MULTI V Hydro Kit Installation Manual
Solar Heating Circuit
Water Pump
Interlock1,2,3
208-230/60/1
Conventional
Thermostat1,4
24 VAC
Conventional
Thermostat4
Hydro Kit
Model
Connection
K3
TB-1,2
K2
TB-11,12
K2
TB-4,5
K3
TB-7,8,9,10
K2
TB-17,18,19,20
& Harness Plug
C to A
K2
TB-17,18,19,20
& Harness Plug
C to B
K3
TB-7,8,9,10
Mechanical Thermostat1
Hydro Kit Circuit 3-Way
Domestic Water Diverting Valve1
K2
TB-17,18,19,20
& Harness Plug
C to A
K3
TB-4,5,6
Voltage
Options
Hydro Kit water circuit circulating
pump interlock (use a field
provided pilot relay).
Provides pump ON/OFF control
based on Hydro Kit control
logic.
208-230/60/1
Solar heating circuit circulating pump
interlock (use a field provided
pilot relay).
Provides pump ON/OFF control
based on Hydro Kit control
logic.
Single stage heating only.
208-230/60/1
24 VAC
Single stage heating/cooling manual
changeover.
Single stage heat/cool, must be
manual changeover model.
Single stage manual changeover.
--Single stage heating only.
TB-8,9,10
Valve A 208-230/60/1
3-wire SPDT
Hydro Kit Circuit 2-Way
In-floor Heating
Isolation Valve1
K2
TB-14,15,16
208-230/60/1
Valve (A) 208-230/60/1
2 -wire NO or NC
Solar Heating SystemInterface Kit1
K2
TB-1,2,3
208-230/60/1
Valve (B)208-230/60/1
3-wire SPDT
TB = Terminal Block
NO = Normally Open
NC = Normally Closed SPDT = Single Pole Double Throw
1
Maximum combined current draw of all connected accessories must be equal to or less than 5 Amp
@ 208-230/60/1.
2
Must have contacts rated for 208-230/60/1
74
Use
208-230/60/1
208-230/60/1
K2
Description
Monitors and/or controls (optional)
the Hydro Kit based on the
conditioned space temperature.
Monitors and/or controls (optional)
the Hydro Kit based on the
conditioned space temperature.
Monitors and/or controls (optional)
the Hydro Kit based on the
conditioned space temperature.
Diverting valve - circulates water to/
from the comfort conditioning
equipment and the Hydro Kit
water storage tank.
Partial circuit water isolation valve
prevents condensate from
forming on floors containing
in-floor heating pipe while
operating in the cooling mode.
Diverting valve circulates water
to/from the Ancillary (Solar)
Heating Interface and the
Hydro Kit heating circuit.
1” FPT both ends
Must have contacts rated for 24VAC
All communication cable to be minimum 18 AWG, 2-conductor, stranded, shielded, and must comply
with applicable local and national codes.
Power wiring cable is field provided and must comply with the applicable local and national codes.
3
4
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 Life’s Good” is a registered trademark of LG Corp.
TROUBLESHOOTING
Troubleshooting Codes
The following error codes (Table 27) will display during self diagnosis of the Hydro Kit along with any manifestations of malfunctions during
the operation of the unit. Errors codes will display by illuminating through red/green LEDs (red for a fault, green for normal function) on the
wired remote controller and on the outdoor unit’s control board (PCB).
•If two or more faults occur at the same time, the error code with the lower number will display first.
•If an Inverter PCB error occurs, Error Code 12 will display on the remote controller, and Inverter PCB board LED can be used to verify the
nature of the error display.
•After correction of the issue, the error code with disappear from the display.
Inverter PCB Fault LED Display
The following sequencing of the LED lights will display during a fault display. Once you determine the error code based on the sequencing
and color of the LED lights, refer to Table 27 for cause and resolution. Note that if the sequencing code is a three digit number, those codes
are based on the outdoor unit and not on the Hydro Kit. Refer to the manual associated with your outdoor/water source unit for a complete
list of error codes, their cause and resolution.
How to Interpret LED Error Codes
•A blinking Red LED will “count” the 10’s of a code. Count the times the LED blinks to determine the code.
•Example: Three blinks of Red LED = 30 (10 + 10 + 10)
•A blinking Green LED will count the single digits of a code. Count the times the LED blinks to determine the code.
•Example: Five blinks of the Green LED = 5 (1 + 1 + 1 + 1 + 1)
•If the Red LED and Green LED blink simultaneously, it will count the ‘100’s” of a code. Count the times both are blinking to determine the
code.
•Example: Red and Green LED’s blink twice, but both at the same time in sequence = 200 (100 + 100)
Based on the rules above, a code of 115 would display as follows:
•Red and Green LED blink once at the same time (100)
•Red LED blinks one time (10)
•Green LED blinks 5 times (5)
Total= 115 for the error code.
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 Life’s Good” is a registered trademark of LG Corp.
75
Operations and Maintenance
•Error Codes 01, 08, 17, 18 can be operated during emergency operation (Safe Mode) and are marked accordingly in the table.
•Some error codes are exclusive to Hydro Kit Medium Temperature (K2) or Hydro Kit High Temperature (K3) units and will be marked accordingly in the table.
TROUBLESHOOTING
Error Codes
Table 27: Hydro Kit Error Code Troubleshooting
Hydro Kit
Model
01
(K2, K3)
*Enabled for
Emergency
Operation
02
MULTI V Hydro Kit Installation Manual
Error Code
76
Error Type
Cause
Air temperature sensor error
Air temperature sensor has disconnected or short
circuited. (Check the wiring, connection at the
CN-ROOM socket on the Hydro Kit unit PCB, then
check the thermistor.)
(K2, K3)
Gas side temperature sensor error
Temperature sensor monitoring the refrigerant
system gas line is disconnected or shorted.
03
(K2, K3)
No communication between Hydro Kit Wall
Mounted Controller and Hydro Kit
Communication has been lost between the Hydro
Kit Wall Mounted Controller and the Hydro Kit for a
specific period of time.
05
(K2, K3)
Hydro Kit & outdoor (or water source) unit
communication error
Lost communication between the Hydro Kit and
the outdoor (water source) unit. Communication
cable is loose, disconnected or shorted.
06
(K2, K3)
Liquid side temperature sensor error
Temperature sensor monitoring the refrigerant
system liquid line is disconnected or shorted.
08
(K2, K3)
*Enabled for
Emergency
Operation
Indirect Hot Water Storage Tank temperature
sensor error
A malfunction with the indirect storage tank hot
water temperature sensor was detected. The
sensor and/or cable may be disconnected or
shorted.
09
(K2, K3)
Indoor unit EEPROM error
Communication error occurred between the
microprocessor on the Hydro Kit PCB board and
the onboard EEPROM chip. Check EEPROM chip
for bent pins and improper installation. If installed
OK, potential EEPROM failure.
11
K3
Hydro Kit unit and inverter PCB communication
error
Communication was lost between the Hydro Kit
main PCB and the R134a Inverter board. Check
for bent pins or loose connections in the wiring
harness plugs and socket connectors..
12
K3
Inverter PCB error
R134a circuit inverter board has reported a
malfunction.
13
K2
Solar heating water circuit temperature sensor
error
Temperature sensor monitoring the solar heating
system's water circuit is disconnected or shorted.
14
(K2, K3)
Flow switch error
Flow switch malfunction.
15
(K2, K3)
Water pipe overheated
Hydro Kit leaving water has exceeded 185°F
(85°C).
16
(K2, K3)
Water inlet & outlet temperature sensor error
Indication that both the refrigerant to water heat
exchanger’s waterside inlet and outlet temperature
sensors simultaneously malfunctioned. Sensor
and/or cable may be disconnected or shorted.
17
(K2, K3)
*Enabled for
Emergency
Operation
Water inlet temperature sensor error
The Hydro Kit refrigerant to water heat
exchanger’s waterside inlet temperature sensor
malfunctioned. Sensor and/or cable may be
disconnected or shorted.
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 Life’s Good” is a registered trademark of LG Corp.
TROUBLESHOOTING
Error Codes
Table 27: Hydro Kit Error Code Troubleshooting (Continued)
Error Code
Hydro Kit
Model
18
(K2, K3)
*Enabled for
Emergency
Operation
21
Error Type
Cause
The Hydro Kit refrigerant to water heat
exchanger’s waterside outlet temperature sensor
malfunctioned. Sensor and/or cable may be
disconnected or shorted.
K3
Inverter compressor IPM defect
R134a circuit compressor and/or inverter board
has malfunctioned.
22
K3
Inverter compressor overcurrent
R134a compressor current transformer sensed
excessive current draw.
23
K3
Inverter compressor DC Link low voltage
Insufficient power sensed in the DC charging
circuit to operate compressor. Obtain an inverter
board testing instrument and verify DC charging
circuit is operating correctly.
25
K3
High/low Inverter input voltage
R134a circuit inverter sensed the input voltage
was out of tolerance (+/- 10%) for a minimum
period of 4 seconds.
26
K3
Inverter compressor activation failure
R134a circuit inverter compressor failed to start.
27
K3
Inverter PSC/PFC Fault Error
R134a circuit inverter board detected excessive
current draw.
28
K3
Inverter DC Link high voltage error
Excessive power sensed in the DC charging
circuit. Triggered by an unexpected stop of the
compressor. Check inverter compressor for
malfunction. Use an inverter checker to verify the
inverter board is operating properly.
29
K3
Inverter compressor overcurrent
R134a circuit compressor locked out due to
compressor current transformer sensing a high
current draw condition.
32
K3
Excessive rise of inverter compressor discharge
temperature
R134a circuit compressor shut down due to high
discharge gas temperature.
34
K3
Excessive rise of high pressure of inverter
compressor
R134a circuit compressor shut down due to high
discharge pressure.
35
K3
Excessive drop of low pressure of inverter
compressor
R134a compressor shut down due to low suction
pressure.
36
K3
Low pressure ratio error of inverter compressor
R134a compressor high/low side differential
pressure ratio dropped below 1.8 for a minimum of
three minutes.
40
K3
Inverter compressor CT sensor defect
R134a compressor current transformer failure.
41
K3
Inverter compressor discharge pipe temperature
sensor defect
R134a compressor discharge temperature sensor
has failed and/or cable is loose, disconnected or
shorted.
42
K3
Low pressure sensor defect of inverter compressor
R134a compressor suction pressure sensor has
failed and/or cable is loose, disconnected or
shorted.
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 Life’s Good” is a registered trademark of LG Corp.
Finishing and Preparing for Start Up
Water outlet temperature sensor error
77
TROUBLESHOOTING
Error Codes
Table 27: Hydro Kit Error Code Troubleshooting (Continued)
Hydro Kit
Model
Error Type
43
K3
High pressure sensor defect of inverter compressor
R134a compressor discharge pressure sensor
has failed and/or cable is loose, disconnected or
shorted.
44
K3
Inverter inside air temperature sensor defect
R134a circuit inverter board ambient air
temperature sensor has failed and/or cable is
loose, disconnected or shorted.
46
K3
Inverter compressor suction pipe temperature
sensor defect
R134a compressor suction temperature sensor
has failed and/or cable is loose, disconnected or
shorted.
53
K3
Communication error (indoor unit→outdoor unit
main PCB)
Lost communication between the Hydro Kit and
the outdoor (water source) unit. Communication
cable is loose, disconnected or shorted.
60
K3
Inverter PCB EEPROM error
Communication error occurred between the R134a
circuit inverter board and the onboard inverter
board EEPROM chip. Check EEPROM chip for
bent pins and improper installation. If installed OK,
potential EEPROM failure.
62
K3
Excessive rise of inverter heatsink temperature
R134a circuit inverter board has sensed a high
inverter board heat sink temperature.
65
K3
Inverter heatsink temperature sensor defect
R134a circuit inverter board heat sink temperature
sensor has failed and/or cable is loose,
disconnected or shorted.
73
K3
Overcurrent (peak) detected at inverter input
R134a circuit inverter board has reported an over
current spike occurred.
MULTI V Hydro Kit Installation Manual
Error Code
78
Cause
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 Life’s Good” is a registered trademark of LG Corp.
FINISHING THE INSTALLATION
Final Checks Before Leaving Site
Use the checklist on the following pages to verify all tasks have been completed prior to calling for the Multi V Hydro Kit system to be commissioned. Place the System ID and Hydro Kit ID at the top of the page, sign and date. Provide a copy to your company’s project manager or
your Multi V System Commissioning Technician.
•After completing the final checks, be sure to reinstall all internal and external covers.
•Be sure power is not connected to the unit. Power will be connected at commissioning.
•If any installation items are incomplete, note the items on the checklist and be sure your supervisor is made aware.
•Check the installation area for tools and debris that may have been left behind.
•If all installation items are correctly completed, the indoor unit is ready for power-up and commissioning.
Finishing and Preparing for Start Up
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
79
INSTALLATION CHECKLIST
System ID No.:_________________________________________________Hydro Kit Unit ID.:_____________________________________
MULTI V Hydro Kit Installation Manual
Checked by:___________________________________ Date:__________________ Signature:____________________________________
Rough-In
Packing materials and literature located and stored in a safe location.
Unit is properly supported – mounting bolts tight.
Unit is canted toward gravity drain line connection (K2 only).
Recommended minimum service clearances followed.
Inlet water strainer is clean and properly installed.
Does local code require a secondary drain pan under the Hydro Kit? Is a secondary drain line connected
to the pan?
Refrigerant Piping
A dry nitrogen purge rate of three (3) psig was maintained during all brazing activity.
Refrigerant pipe is properly supported to keep lateral pressure off unit connections.
Refrigerant shutoff valves are full port design with integral Schrader port rated for R410A (option).
Shutoff valves have the same internal pipe diameter as the connected pipe (option).
Two shutoff valves were installed; one (1) high pressure liquid, one (1) low pressure vapor (option).
Shutoff valves installed with Schrader port between the indoor unit and the ball of the valve (option).
Condensate System (K2 only)
Condensate pipe is properly sized and supported to keep lateral pressure off unit connections.
Condensate pipe horizontal segments are sloped a minimum of 1/4" per foot of pipe away from the indoor unit.
Condensate pipe is routed and secured in place to facilitate discharge to an approved drain.
80
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 Life’s Good” is a registered trademark of LG Corp.
N/A Not Complete Complete
N/A Not Complete Complete
N/A Not Complete Complete
INSTALLATION CHECKLIST
PAGE 2
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 Life’s Good” is a registered trademark of LG Corp.
N/A Not Complete Complete
N/A Not Complete Complete
N/A Not Complete Complete
N/A Not Complete Complete
81
Finishing and Preparing for Start Up
Insulation
Additional housing, refrigerant and condensate pipe insulation has been supplemented to prevent sweating
while operating if the Hydro Kit unit installed in abnormal environmental conditions. (Optional - job condition
specific.)
All refrigerant and chilled water pipes are independently insulated. All insulation seams and joints are airtight.
Insulation is not compressed. Double layer insulation is provided at pipe supports and wall penetrations.
Electrical
Power provided is single phase, ±10% of indoor unit nameplate specifications.
Power wires properly sized and protected per NEC and local codes. Indoor unit is properly grounded.
Power and communications conductors are separated by the recommended minimum distance.
Terminal block screws are tight. Power wires are not in contact with terminals (3(A) and / or 4(B). Line voltage
wires have spade connectors installed.
Power wires are properly secured to the control box case to prevent wire tension at the terminal block.
Wires are protected from chaffing at control box and conduit pipe penetrations.
Low voltage control cables are properly secured to the control panel case. Terminal block screws are tight and
the cable is protected from sharp edges at control box case and conduit openings.
Cables are installed at recommended distances from high voltage and EMF generating equipment.
Communications cable between the outdoor (water source) unit and the Hydro kit is terminated at terminals
tagged (terminals 3[A] and 4[B]).
Field provided communications cable is 18-2 stranded and shielded. All terminations are made at the terminal
block. No inline splices or wire caps are present. Spade or ring connectors containing copper are used on all
communications and low voltage cable terminations.
Communications cable insulation material is accepted by local code enforcement.
Communications cable shield is tied back, continuous between the Hydro Kits and the other indoor units and is
grounded at the outdoor (water source) unit only.
Hydro Kit Wall Mounted Controller Communications
LG factory provided Hydro Kit Wall Mounted Controller stranded, shielded (white jacket) cable was used
between the Hydro Kit Wall Mounted Controller(s) and indoor unit(s).
Hydro Kit Wall Mounted Controller cable has not been cut, spliced, or tied together with wire caps. Factory
plugs are present.
Cable is securely plugged into the socket on the Hydro Kit Wall Mounted Controller or the three screw terminals
on the Hydro Kit Unit Controller.; Yellow to “Y”, Red to “R”, and Black to “B”.
Hydro Kit Control Panel
Hydro Kit Wall Mounted Controller cable is securely plugged into the CN-REMO socket on the
Hydro Kit main PCB.
If an optional remote temperature sensor was installed, the associated cable is plugged into socket CN-ROOM.
Hydro Kit unit DIP switches have been adjusted for application (group control-master/slave; water heating
only, etc.)
Wiring harness “Plug C” has been properly connected to either “Plug A” or “Plug B” based on the type of
thermostat and/or room sensor was installed.
All wiring harness connections have been checked and are securely connected to the plug sockets.
Power and communications cables are properly restrained and separated.
82
Unit Tag
IDU's
Building
Floor
Room ID
Pre-Com Tech Name/Ph#/email
Mech Contractor Company Name
Date:
Project Name:
Type
AC Smart
Static IP address:
Model
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 Life’s Good” is a registered trademark of LG Corp.
Adjusted
Fan Setting Value
.
Low | Medium | High
rev 20130619.3
Serial #
Ph# / Email
MEP Project Mngr Name
System ID
Building ID
System
Address
Central
Control
Address
Group
member ID
or N/A if not
in a group
LG Multi V Pre-Commissioning Device Configuration Worksheet
MULTI V Hydro Kit Installation Manual
Group
Function
M=Master
S=Slave
Page #
Sensor
Strategy
(RA/ZC/Both)
DEVICE CONFIGURATION WORKSHEET
Figure 66: Pre-Commissioning Device Configuration Worksheet
WHO TO CALL FOR ASSISTANCE
Freight Damage and Unit Replacements......................................................... Your LG Manufacturer Representative
Missing Parts.................................................................................................. Your LG Manufacturer Representative
Received Wrong Indoor Unit Model................................................................. Your LG Manufacturer Representative
Installation, Startup, and Commissioning Technical Assistance....................... 1-888-865-3026
20001747
ISO 9001: 2008
LG ELECTRONICS INC.
LG Electronics
Commercial Air Conditioning Division
11405 Old Roswell Road
Alpharetta, Georgia 30009
www.lg-vrf.com
LG Customer Information Center, Commercial Products
1-888-865-3026 USA
Follow the prompts for commercial A/C products and parts.
VRF-IM-BT-001-US_014A06
Supercedes: VRF-IM-BT-001-US_013M20
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