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title: "LG Therma V R290 3-phase Hydrobox 9kW | Order directly!"
description: "Buy the LG Therma V R290 3-phase Hydrobox at ESTG. Powerful indoor unit with dedicated 9kW heater for 400V installations. View current stock levels!"

type: product_page

---

# LG Therma V R290 3-Phase Hydrobox Indoor Unit 9kW - Art.No.: LG-HN1639HC-NK0

## Specifications

- **Brand**: LG Electronics
- **HS code**: 84189990
- **Manufactor**: LG Electronics
- **Net Height**: 850 MILLIMETER
- **Net Length**: 315 MILLIMETER
- **Net Weight**: 31 KILOGRAM
- **Net Width**: 490 MILLIMETER
- **Origin**: Republic of Korea
- **Color**: Black
- **System**: LG Therma V (R290) series

## LG Therma V R290 3-phase Hydrobox indoor unit 9kW


The LG Therma V R290 Hydrobox (LG-HN1639HC-NK0) is a compact indoor unit for monobloc heat pumps in large residential and light-commercial projects. Within our range of **[heat pumps](https://www.estg.eu/en-gb/assortment/heat-cool/heat-pumps)** from **[LG Electronics](https://www.estg.eu/en-gb/brands/lg-electronics)**, this wall-mounted unit manages central control and indoor hydraulic distribution. The system features a 9 kW 3-phase electric back-up heater and manages flow temperatures and domestic hot water preparation via a built-in three-way valve. Because the connection to the monobloc outdoor unit is fully hydronic, you install the complete system without an F-gas certificate.


### Advantages of the LG Therma V R290 3-phase Hydrobox indoor unit for installers


- **Dedicated 3-phase back-up heater**: designed directly for a 400V connection with a fixed electric output of 9 kW
- **Balanced power distribution**: prevents phase imbalance in the distribution board through an even load across three phases
- **Targeted system compatibility**: connects seamlessly to the 3-phase monobloc outdoor units from 9 kW to 16 kW
- **Pre-assembled hydraulic components**: equipped with a 12-litre expansion vessel, a three-way valve and an automatic air vent for rapid assembly
- **Fully hydronic connection**: requires no handling of refrigerant pipework, allowing installation without an F-gas certificate
- **Built-in Wi-Fi and touchscreen**: equipped with Wi-Fi for the LG ThinQ app and a 6.8-inch colour touchscreen as standard
- **Quiet operation**: silent in the home with a sound pressure level of only 31 dB(A) at 1 metre distance


### Powerful 3-phase back-up heating for larger installations


The digits 39 in the model code indicate the dedicated 3-phase connection for the 9 kW heating element. This version is engineered specifically for a 400V mains connection and cannot be connected to a 1-phase consumer unit. This makes the indoor unit an exact fit for 3-phase installations combined with 3-phase outdoor units. The system delivers heating water up to 75°C and heats domestic water in combination with a separate cylinder up to 80°C.


### Complete internal hydraulics and installation speed


This indoor unit saves valuable installation time in the plant room. Components such as the 12-litre expansion vessel, the automatic air vent and the three-way valve are factory integrated. The bottom features clear 1-inch connections for the heating circuit, domestic hot water and pipework to the outdoor unit. Commissioning runs smoothly thanks to the integrated 5-step setup wizard on the 6.8-inch touchscreen. Built-in Wi-Fi connects the system directly to the LG ThinQ app for remote control.


### Compatible models within the LG Therma V R290 series


This indoor unit is designed specifically for combination with the 3-phase outdoor units in the LG Therma V R290 series. Select the appropriate capacity for every project:


**Residential and light-commercial 3-phase (400 V)**


- **9 kW**: [LG-HM093HFD.UA41](https://www.estg.eu/en-gb/p/LG-HM093HFD.UA41)
- **12 kW**: [LG-HM123HFD.UB41](https://www.estg.eu/en-gb/p/LG-HM123HFD.UB41)
- **14 kW**: [LG-HM143HFD.UB41](https://www.estg.eu/en-gb/p/LG-HM143HFD.UB41)
- **16 kW**: [LG-HM163HFD.UB41](https://www.estg.eu/en-gb/p/LG-HM163HFD.UB41)

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