The “R290 Heat Pump Hydraulic Module With 5L Expansion Tank” is a indoor unit designed to work seamlessly with R290 top-blow heat pump systems. It has a built-in expansion tank, electric heating heater, three-way valve, automatic air release valve, and AC contactor. Expansion tanks enhance the system safety. It saves customers significant installation time and costs. Installing a monoblock heat pump is now easier!
It is a compact, all-in-one indoor unit. It can be used with various heat pump systems to ensure a stable hot water supply and efficient home heating. It is the whole house control center for heating, cooling and hot water.
Our independently developed color LED screen allows you to easily access all menus. We’ve designed it to be simple and easy to understand for user convenience.
| Model | NHB-02 | NHB3N-01 |
| Power Supply | 220~240V/50Hz/60Hz | 380-415V/50Hz |
| Expansion Tank | 5L | 5L |
| Electric Heating Heater | 3kW | 6kW |
| AC Contactor 1 (Main Board) (Both are 220-240V voltage connection) | 16A | 16A |
| AC Contactor 2 (DHW Electric Heater Terminal) | 63A | 25A |
| AC Contactor 3 (Heating Electric Heater Terminal) | 63A | 25A |
| AC Contactor 4 (Inner Electric Heater Terminal) | 16A | 25A |
| 3-Way Valve | Yes | Yes |
| Automatic Air Release Valve | Yes | Yes |
| Water Connection | G1' | G1' |
| Communication Connecting Wire Length (Indoor unit & Outdoor unit) | 15m | 15m |
| Connecting Wire Length (Temp. Sensors) | 5m | 5m |
| Product Size (L/W/H) mm | 610*420*250 | 610*420*250 |
| Standard Package Method | Cardboard Box | Cardboard Box |
| Standard Cardboard Box Package Dimensions (L/W/H) mm | 700*480*312 | 700*480*312 |
| Optional Wooden Box Package Up-cost | $16.00 | $16.00 |
| Optional Wooden Box Package Dimensions (L/W/H) mm | 735*515*440 | 735*515*440 |
| Adapt model | All | All |
It works in conjunction with various heat pump systems to ensure a consistent supply of hot water and efficient home heating.
The hydraulic module integrates electric heating, a three-way valve, and connects to the outdoor unit via water pipes; the wire center only integrates the whole-house control system terminals, connecting to the outdoor unit via communication cables.
The hydraulic module offers higher integration and can serve as an auxiliary heat source. The wire center offers greater autonomy, especially when hot water functionality is not standard, resulting in cost savings. However, installing an external three-way valve and auxiliary electric heating requires more specialized skills.
Yes, the unit has a compact design and flexible installation, and it won’t take up too much space in your home. Indoor installation is unaffected by cold weather.
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