LG ARNH423K3A4 Hydro Kit High Temperature 42 MBh Indoor Unit Owner’s Manual
- June 9, 2024
- LG
Table of Contents
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ARNH423K3A4
Hydro Kit High Temperature
42 MBh Indoor Unit
Performance:
| Rated Heated Capacity (Btu/h) | 47000 |
|---|---|
| Entering Water Temperature Range (°F) | 50 – 158 |
| Leaving Water Temperature Range (°F) | 86 – 176 |
Rated capacity is certified under AHRI Standard 1230. Ratings are subject to change without notice. Current certified ratings are available at www.ahridirectory.org.
Electrical:
| Power Supply (V/Hz/Ø)¹ | 208-230/60/1 |
|---|---|
| Power Input (kW) | 2.3 |
| MOP (A) | 25 |
| MCA (A) | 18.2 |
| Rated Amps (A) | 12 |
MOP — Maximum Overcurrent Protection MCA — Minimum Circuit Ampacity
Piping:
| Liquid Line (inches, O.D.) | 3/8 Braze |
|---|---|
| Vapor Line (inches, O.D.) | 5/8 Braze |
| Water Inlet / Outlet (inches, O.D.) | 1, Male Pipe Thread |
Standard Features:
- High temperature water heating
- Domestic water heating2
- Factory mounted inlet/outlet water temperature sensors
- Wi-Fi compatible with optional module
- Factory mounted internal flow switch
- Third-party thermostat interface3,4
- Group control5
- Remote on/off site monitoring capability via the internet6
Water Flow Control Options:
- Water Pump On / Off Interlock
- 208V 3-Way Diverting Valve3,7,8
Included Accessories:
- Hot Water Tank Temp Sensor with 32-foot Communication Cable9,10
- 1 /2″ Male Pipe Thread (MPT) Hot Water Tank Sensor Well9
- Remote Wall Mounted Hydro Kit Controller with 32-foot Communication Cable9,11
- 1″ Female Pipe Thread (FPT) 50 Mesh Inlet Strainer9
Optional Accessories:
Dry Contact - PDRYCB320 / PDRYCB100
Remote Temperature Sensor - ZRTBS019,12
Group Control Cable Kit - PZCWRCG35
Extension Cable - PZCWRC111
LG MultiSITE™ Communications Manager - PBACNBTR0A
AC Smart™ 5 - PACS5A000
ACP 5 - PACP5A000
ACP LonWorks® - PLNWKB100
Wi-Fi Module - PWFMDD200
Unit Data:
| Refrigerant Type (Primary / Secondary) | R410A / R134A |
|---|---|
| Refrigerant Control | EEV |
| Sound Pressure dB(A)13 Heating | 44 |
| Net Weight (lbs.) | 189.6 |
| Shipping Weight (lbs.) | 207.2 |
| Heat Rejected to Equip. Rm. (Btu/h) | Negligible |
| Factory Charge (R134A, lbs.)14 | 5.07 |
Heat Exchanger:
| Heat Exchanger | Refrigerant to Water |
|---|---|
| Heat Exchanger Type | Brazed Plate |
| Rated Water Flow (GPM) | 5.2 |
| Rated Pressure Drop (ft-wg)15 | 1.7 |
| Flow Range (GPM) | 5.2 to 10.6 |
| Water Side Volume (US Gallons) | 0.58 |
| Water Side Design Pressure (psig) | 640 |
Compressor:
| Compressor Type x Quantity | Twin Rotary Inverter x 1 |
|---|
Notes:
- Voltage fluctuation tolerance is ±10%.
- Requires the use of an indirect water storage tank.
- Field provided and mounted.
- Field-provided thermostat must be a line voltage (208V) heating only thermostat. Heating setpoint, deadband, and manual restart functions provided by Hydro Kit controller are not available with use of a third-party thermostat. Cannot be used in conjunction with remote temperature sensor.
- Group Control Cable Kit (PZCWRCG3) required and sold separately.
- Monitoring capability available using a MultiSITE Communication Manager, AC Smart 5, or ACP 5 (sold separately), or a BMS system integration gateway (sold separately). Requires a field provided LAN/internet connection or BMS system provided by others.
- Not required on dedicated domestic water heating applications.
- Alternates flow between comfort heating equipment and water heating tank.
- Field mounted.
- Cannot field splice.
- Cannot field splice. To extend cable length, use Extension Cable (PZCWRC1), sold separately.
- Requires the installation of the Hydro Kit controller. Does not apply when used in conjunction with a third-party thermostat.
- Sound pressure levels tested in an anechoic chamber in accordance with ISO Standard 3475.
- Internal second stage refrigerant circuit.
- Water only (no antifreeze).
(Unit: Inch)
Notes:
- Unit must be installed in compliance with the installation manual.
- Unit must be grounded in accordance with the local or state regulations and applicable national codes.
- All field-supplied electrical components and materials must comply with the local, state, and national codes.
3D VIEW
-
Power Supply Wiring
Routing Hole (01-3/16) -
Communications Cable
Routing Hole (01-3/16) -
Vapor Piping
-
Liquid Piping
-
Water Outlet
-
Water Inlet
For continual product development, LG reserves the right to change
specifications without notice.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG
Life’s Good” is a registered trademark of LG Corp.
/www.lghvac.com
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SB_HydroKit HighHeat _ARNH423K3A4_2023_03_10_092044
Documents / Resources
| LG
ARNH423K3A4 Hydro Kit High Temperature 42 MBh Indoor
Unit
[pdf] Owner's Manual
ARNH423K3A4, Hydro Kit High Temperature 42 MBh Indoor Unit, ARNH423K3A4 Hydro
Kit High Temperature 42 MBh Indoor Unit, High Temperature 42 MBh Indoor Unit,
Temperature 42 MBh Indoor Unit, 42 MBh Indoor Unit
---|---
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>