LG THERMA V R32 Split Series

Overview

The LG THERMA V R32 Split series is an advanced air-to-water heat pump system designed for efficient heating, cooling, and domestic hot water production. It comprises an outdoor unit connected to an indoor unit via refrigerant pipes. The series offers two primary indoor unit configurations: the Integrated Water Tank (IWT) and the Hydro Box, catering to diverse installation needs. Available in 4/6 kW and 5/7/9 kW capacity ranges, the R32 Split 4/6 kW model is optimized for new build houses with high insulation and low heating demands, while the 5/7/9 kW model is suitable for both new build and renovation projects.

Key Features

R32 Split 4/6 kW

• ✅ Meets the needs of new build houses with good insulation and a small heating demand.
• ? Combines with IWT (Integrated Water Tank) and Hydro Box indoor units.
• ? Demonstrates a lower noise level (sound pressure level at 3 m: 39 dB (A) for 4 kW / 40 dB (A) for 6 kW).
• ? Enhanced installation flexibility: Free from minimum floor area requirements due to R32 refrigerant (Max. refrigerant amount including 30 m pipes < 1.842 kg).
• ⚖️ Light weight and compact size.
• ? Max. 30 m refrigerant piping length.
• ? Integrated 3 kW backup heater and expansion tank (8 ℓ) for heating.
• ? High efficiency & operational range: SCOP up to 4.65 / 3.12 (low temp. / med temp. application) rated A / A**; Water heating efficiency 133% (4.6 kW, profile L) rated A; COP up to 5.10 (outdoor air 7 °C / leaving water 35 °C).
• ❄️ Operation range (ambient: -20 ~ 35 °C / water side: 15 ~ 55 °C).
• ? Innovative design & technology: Duplex stainless steel water tank (200 ℓ, for IWT only).
• ? Energy monitoring of estimated power consumption.
• ? Control & Connectivity: LG ThinQ Wi-Fi control and monitoring solution; PV / ESS or smart grid connectivity.

R32 Split 5/7/9 kW

• ? Suitable for both new build and renovation projects.
• ? Combines with IWT and Hydro Box indoor units.
• ? Boasts a wider operating range.
• ? Enhanced installation flexibility: Light weight and compact size.
• ? Max. 50 m refrigerant piping and 3-way piping connection availability.
• ? Integrated backup heater (6 kW for Hydro Box, 3 kW for IWT) and expansion tank (8 ℓ) for heating.
• ? High efficiency & operational range: SCOP up to 4.65 / 3.12 (low temp. / med temp. application) rated A / A+; Water heating efficiency 133% (5.7 kW, profile L) / 140% (9 kW, profile XL) rated A; COP up to 5.10 (outdoor air 7 °C / leaving water 35 °C).
• ❄️ Operation range (ambient: -25 ~ 35 °C / water side: 15 ~ 65 °C).
• ? Innovative design & technology: Duplex stainless steel water tank (200 ℓ, for IWT only).
• ? Energy monitoring of estimated power consumption.
• ? Control & Connectivity: LG ThinQ Wi-Fi control and monitoring solution; PV / ESS or smart grid connectivity.

Product Combinations

Product Specifications

Indoor Unit (For IWT)

1) When a fan coil unit is not used. 2) For HN0613T NKO, DHW 50 ~ 80 °C operating is available only when the electric heater is operating. 3) For HN0913T NKO, DHW 58 ~ 80 °C operating is available only when the electric heater is operating. 4) When connecting the refrigerant pipe, the adaptors provided with the outdoor unit must be installed on the connection of the indoor unit.

Indoor Unit (For Hydro Box)

1) When a fan coil unit is not used. 2) For HN0613T NKO, DHW 50 ~ 80 °C operating is available only when the booster heater is operating. 3) For HN0913T NKO, DHW 58 ~ 80 °C operating is available only when the booster heater is operating. 4) When connecting the refrigerant pipe, the adaptors provided with the outdoor unit must be installed on the connection of the indoor unit.

Outdoor Unit (For R32 Split 4/6 kW)

1. Due to LG's policy of innovation, some specifications may be changed without notification. 2. Wiring cable size must comply with the applicable local and national codes. Especially the power cable and circuit breaker should be selected in accordance with that. 3. Sound power level is measured on the rated condition in accordance with ISO 9614 standard. Sound pressure level is converted from sound power level based on tonality penalty of 0 dB and installation in free-field. The directivity index (Q) is assumed as 2. Therefore, these values can be increased owing to ambient conditions during operation. Rated sound power level is in accordance with EN12102-1 under condition of EN14825. 4. Performances are in accordance with EN14511 and reflect ErP testing conditions. Above gives the declared values at rated conditions acc. ErP regulation. Rated running current: Outdoor Temp. 7°C (DB) / 6°C (WB), Leaving Water Temp. 35°C. Interconnected pipe length is standard length and difference of elevation (Outdoor ~ Indoor unit) is 0 m. 5. This product contains fluorinated greenhouse gases. 6. All installation sites must be equipped with an earth leakage circuit breaker (ELCB).

Outdoor Unit (For R32 Split 5/7/9 kW)

1. Due to LG's policy of innovation, some specifications may be changed without notification. 2. Wiring cable size must comply with the applicable local and national codes. Especially the power cable and circuit breaker should be selected in accordance with that. 3. Sound power level is measured on the rated condition in accordance with ISO 9614 standard. Sound pressure level is converted from sound power level based on tonality penalty of 0 dB and installation in free-field. The directivity index (Q) is assumed as 2. Therefore, these values can be increased owing to ambient conditions during operation. Rated sound power level is in accordance with EN12102-1 under condition of EN14825. 4. Performances are in accordance with EN14511 and reflect ErP testing conditions. Above gives the declared values at rated conditions acc. ErP regulation. Rated running current: Outdoor Temp. 7°C (DB) / 6°C (WB), Leaving Water Temp. 35°C. Interconnected pipe length is standard length and difference of elevation (Outdoor ~ Indoor unit) is 0 m. 5. This product contains fluorinated greenhouse gases. 6. All installation sites must be equipped with an earth leakage circuit breaker (ELCB).

Seasonal Energy Efficiency

R32 Split 4/6 kW

1) The domestic hot water efficiency is only for IWT type indoor units. * Keymark, Eurovent, MCS and EHPA label under development.

R32 Split 5/7/9 kW

1) The domestic hot water efficiency is only for IWT type indoor units. * 9 kW 1 Φ model. * A+++ to D scale.

Key Advantages

Easy Installation

• ? Small refrigerant amount: Free from minimum floor area requirements due to R32 refrigerant. Minimum floor space requirements do not apply to R32 Split 4/6 kW, as the maximum refrigerant amount (including 30 m pipes) used in the product is smaller than the minimum set for regulation. As a result, there are more opportunities for flexible design and installation. (R32: 1.5 kg max refrigerant amount vs. 1.842 kg min regulated amount). Max. 30 m refrigerant pipe length, Max. 30 m elevation. ? No room size restriction.
• ⚖️ Light weight and compact size: The unit's compact size and light weight make it easy to handle and install. (R32 Split 4/6 kW: 184 mm height, R32 Split 5/7/9 kW: 834 mm height; 26% lighter weight, 29% smaller volume).
• ? Flexible piping design & Clip connection.

Excellent Performance & Efficiency

• ♻️ R32 refrigerant & R1 compressor™ technology offers advanced efficiency, reliability, and operational range due to enhanced tilting motion of the scroll.
• ☀️ Solar thermal heat exchanger (Hydro Box only).
• ⚡ Energy state integration for renewable energy use.
• ? Reduced noise level: The R32 Split outdoor unit can be installed at a minimum of 4.5 m away from neighboring houses while complying with noise-related requirements in most European countries. (Example: 4 kW ODU & Low noise mode).

User Convenience

• ? All-in-one (IWT only).
• ? Easy drain (IWT only).
• ? Harmonious exterior (IWT only).
• ?️ Intuitive interface.
• ? LG ThinQ Wi-Fi control and monitoring solution allows remote monitoring and management via smartphone app. Works with Google Assistant for voice commands.
• ? Mixing circuit.
• ⚙️ Various control options.
• ♨️ DHW recirculation.
• ? 3rd party boiler integration.
• ? Energy monitoring of estimated power consumption.
• ? Seasonal auto mode.
• ? Low noise mode.
• ⬆️ Advanced pump control.

Technology Highlights

R1 Compressor™ Revolutionary Technology

The R1 Compressor™ technology provides enhanced efficiency, reliability, and operational range. Key internal features include centrifugal oil return and an oil separating guide for reduced oil discharge, a shaft-through structure for solid compressor operation and higher durability, and bottom compression for lower noise, vibration, less weight, and superior reliability.

ThinQ Seamless Connectivity

LG ThinQ, a smartphone app, allows users to monitor and manage compatible LG products remotely. Users can set the temperature and regulate the use of their THERMA V anytime and anywhere. LG ThinQ technology also integrates with Google Assistant, enabling voice control for THERMA V units in most EU countries.

Energy States Interlock

LG Therma V offers an energy state interlock function that enables customers to maximize the use of their own renewable energy. It can shift indoor unit set points based on input signals from an Energy Storage System (ESS) or other third-party devices via Modbus or Digital 230 V inputs. This allows for energy generated from solar panels to be sent to a battery, used to heat the water tank once the battery is full, and surplus energy can be sold to the grid. The LG ThinQ app provides status monitoring.

Indoor Unit Components and Connections

IWT Indoor Unit

Components

• 1: Plate heat exchanger (ref. / water)
• 2: Strainer
• 3: Expansion tank for heating (8 ℓ)
• 4: Reserved space for DHW expansion tank
• 5: DHW storage tank (stainless steel, 200 ℓ) with internal coil type heat exchanger
• 6: Standard III remote controller (attached on front panel)
• 7: Air vent valve
• 8: 3-Way diverting valve (DC)
• 9: Electric back-up heater (3 kW)
• 10: Water flow sensor
• 11: Main water pump with air vent and safety valve (water circuit, 3 bar)
• 12: Water pressure sensor
• 13: Drain valve for water circuit
• 14: Safety valve (DHW tank, 10 bar)
• 15: Drain valve for DHW tank

Connections

• A: DHW recirculation pipe (female G1" *)
• B: Domestic hot water outlet pipe (female G1" *)
• C: Domestic cold water inlet pipe (female G1" *)
• D: Heating circuit inlet pipe (female G1" *)
• E: Heating circuit outlet pipe (female G1" *)
• F: Refrigerant liquid pipe (SAE 3/8" **)
• G: Refrigerant gas pipe (SAE 5/8" **)

* According to ISO 228-1 (parallel pipe threads)
** In case of Split 4/6 kW model, the adaptors provided with the outdoor unit must be separately installed on the gas/liquid connection of the indoor unit when connecting the refrigerant pipe. After installing the adaptors, the liquid and gas connection size becomes Ø 6.35 (1/4 inch) and Ø 12.7 (1/2 inch) respectively.

Hydro Box Indoor Unit

Components

• 1: Standard III remote controller (attached on the front panel)
• 2: Water pump
• 3: Water pressure sensor
• 4: Flow sensor
• 5: Plate type heat exchanger (ref/water)
• 6: Air vent valve
• 7: Expansion vessel (8 ℓ)
• 8: Back up electric heater (6 kW for HN091MR NK5, 3 kW for HN0613M NK5)
• 9: Safety valve
• 10: Strainer

Connections

• A: Heating circuit outlet pipe (male PT 1" *)
• B: Heating circuit inlet pipe (male PT 1" *)
• C: Refrigerant liquid pipe (SAE 3/8" **)
• D: Refrigerant gas pipe (SAE 5/8" **)

* According to ISO 7-1 (tapered pipe threads)
** In case of Split 4/6 kW model, the adaptors provided with the outdoor unit must be separately installed on the gas/liquid connection of the indoor unit when connecting the refrigerant pipe. After installing the adaptors, the liquid and gas connection size becomes Ø 6.35 (1/4 inch) and Ø 12.7 (1/2 inch) respectively.

Performance Tables

R32 Split 4/6 kW Performance

Heating Operation (Maximum Heating Capacity)

Cooling Operation (Maximum Cooling Capacity)

Note: 1. DB : Dry Bulb Temperature (°C), LWT : Leaving Water Temperature (°C) 2. Direct interpolation is permissible. Do not extrapolate. 3. Measuring procedure follows EN-14511. Rated values are based on standard conditions and can be found on specifications. 4. The shaded areas are not guaranteed continuous operation.

R32 Split 5/7/9 kW Performance

Heating Operation (Maximum Heating Capacity)

Cooling Operation (Maximum Cooling Capacity)

Note: 1. DB : Dry Bulb Temperature (°C), LWT : Leaving Water Temperature (°C) 2. Direct interpolation is permissible. Do not extrapolate. 3. Measuring procedure follows EN-14511. Rated values are based on standard conditions and can be found on specifications. 4. The shaded areas are not guaranteed continuous operation. 5. Above table values may not be matched according to installation conditions. Except for rated values, the performance is not guaranteed. 6. The rating might slightly vary depending on test standards or countries.