High-Efficiency All-Electric Heat Pump Hot and Chilled Water Solutions
Daikin's LT hydrobox (HXY48TAVJU) offers an all-electric means of refrigerant to water heat exchange, providing an efficient method for hot and cold-water generation for many hydronic solutions, including high-efficiency space heating and cooling. The LT hydrobox combines with Daikin's VRV systems for expanded indoor unit flexibility with hydronic integration. It delivers water from 50°F to 113°F without the need for a backup electric heater, making it suitable for underfloor heating and cooling, air handling units, and low-temperature radiators. This makes it an ideal choice for both new construction and renovation applications.
The stylish and compact wall-hung unit features front access and minimal clearance requirements, making it ideal for installation in tight spaces and ensuring ease of maintenance.
Image Description: A panoramic view of a modern cityscape seen through large windows. In the foreground, a Daikin LT hydrobox unit is showcased.
Features and Benefits
- Direct control over the leaving water temperature for a wide range, from 50°F in cooling up to 113°F in heating.
- Eliminates the need for gas connection or oil tanks to generate hot or cold water.
- Space-saving contemporary wall-hung design.
- Seamless integration with VRV IV X Heat Pump systems¹.
¹ Refer to the engineering manuals for detailed design conditions.
Applications
[Office] [Hotel] [Retail] [Schools] [Multi-Family]
Warranty Information: [10 Year Parts Commercial Warranty]. Complete warranty details are available from your local distributor, manufacturer's representative, or at https://www.daikincomfort.com or https://www.daikinac.com.
Integrated Hydronic Accessories
Save time on system design as all water components are fully integrated with direct control over leaving water temperature. Factory-installed hydronic accessories include:
- Flow switch
- Strainer
- Safety relief valve
- Auto air vent valve
- Expansion tank
- Inlet/outlet temp sensors
- Pump
Installation Example
Diagram Description: An illustration depicting a typical installation. It shows a Daikin hydrobox unit connected to an outdoor VRV unit. The hydrobox then supplies heated or cooled water to a radiant floor heating/cooling system and low-temperature radiators.
Specifications
| Specification | Details |
|---|---|
| Model | HXY48TAVJU |
| Power Supply | 208/230VAC 60 Hz, 1-Phase |
| Cooling ¹ Nominal Capacity | 42,650 (12.5) Btu/h (kW) |
| Heating ² Nominal Capacity | 48,000 (14.0) Btu/h (kW) |
| Type | DC Motor, Inverter Controlled |
| Nr of Speeds | Inverter Controlled |
| Pump Cooling Nominal ESP | 24.4 (73) ft hd (kPa) |
| Pump Heating Nominal ESP | 21.8 (65) ft hd (kPa) |
| Dimensions (H x W x D) | 35 1/16 x 18 7/8 x 13 1/2 (890 x 480 x 344) in. (mm) |
| Weight (Dry) | 97 (44) lbs (kg) |
| Casing (Color / Material) | White / Precoated Sheet Metal |
| Sound Power Level | 60 dBA |
| Sound Pressure Level | 31 dBA |
| Water Flow Rate Range | 3.4 - 11.9 (15 - 45) gpm (l/min) |
| Pump Control Method | Water Inlet/Outlet Delta T Control |
| Delta T Range | 5.4 - 14.4 (3 - 8) °F (°C) |
| Outlet Temp. Range Cooling | 50 - 68 (10 - 20) °F (°C) |
| Outlet Temp. Range Heating | 77 -113 (25 - 45) °F (°C) |
| Ambient Temperature Range Cooling | 50 - 109 (10 - 43) °F (°C) |
| Ambient Temperature Range Heating | -4 - 75 (-20 - 24) °F (°C) |
| Pipe Connections Liquid | 3/8 (9.5) (Flare) in. (mm) |
| Pipe Connections Gas | 5/8 (15.9) (Flare) in. (mm) |
| Water Side Connection ³ | 1 1/4 (31.8) in. (mm) |
| Refrigerant Control | Electronic Expansion Valve |
| Maximum Overcurrent Protection | 15 A |
| Minimum Circuit Ampacity | 2.5 A |
NOTE:
- ¹ Nominal Cooling Conditions: Ambient: 95°F DB, LWT: 64.4°F, Delta T: 9°F, Flow Rate: 9.5 gpm
- ² Nominal Heating Conditions: Ambient: 44.6°F DB / 42.8°F WB, LWT: 95°F, Delta T: 9°F, Flow Rate: 10.6 gpm
- ³ Adaptor Shipped Loose with IDU (BSPP to NPT)
Additional Information
Before purchasing this appliance, read important information about its estimated annual energy consumption, yearly operating cost, or energy efficiency rating that is available from your retailer. Visit https://www.daikinac.com to learn more.
