ALL-IN-ONE Hydraulic Indoor Unit – Key Highlights

♞ Fully integrated buffer tank and DHW tank in one compact indoor unit

♞ Factory-installed circulation pumps, valves, expansion vessels, filters, and safety components

♞ Supports underfloor heating, radiators, fan coil units, and domestic hot water in one system

♞ Dedicated DHW recirculation connection, improving hot water comfort and reducing waiting time

♞ Pre-configured and factory-tested to minimize on-site installation and commissioning work

♞ Helps reduce installation cost, system errors, and long-term service risk

Why Choose an ALL-IN-ONE Indoor Unit?

Traditional heat pump installations require multiple hydraulic components—such as buffer tanks, domestic hot water tanks, circulation pumps, valves, expansion vessels, and safety devices—to be installed and connected separately on site. This approach increases installation complexity, labor time, and dependence on installer experience.

The ALL-IN-ONE hydraulic indoor unit shifts this complexity from the installation site to the factory. By integrating all key hydraulic components into a single, pre-assembled and pre-tested unit, the system offers a standardized and installer-friendly solution.

In addition to space heating and domestic hot water production, the unit provides a dedicated domestic hot water (DHW) recirculation interface, ensuring faster hot water delivery and improved comfort at distant tapping points.

Compared with traditional split installations, the ALL-IN-ONE solution enables faster installation, lower labor cost, reduced risk of installation errors, and more consistent system quality. It is particularly well suited for residential projects, renovation applications, and markets where installation efficiency and reliability are critical.

How the ALL-IN-ONE System Works

The ALL-IN-ONE indoor unit functions as the central hydraulic hub of the heat pump system, connecting the outdoor heat pump with all indoor heating and domestic hot water applications.

Heat generated by the outdoor heat pump is transferred to the indoor unit, where an integrated buffer tank stabilizes system operation and distributes energy to different heating circuits. The system supports underfloor heating, radiators, and fan coil units, with integrated control and mixing components managing different temperature requirements automatically.

Domestic hot water is produced by the built-in DHW tank, supported by auxiliary electric heating when required. A dedicated DHW recirculation connection allows continuous hot water circulation within the building, significantly reducing waiting time at tapping points and improving overall user comfort.

All hydraulic components—including circulation pumps, expansion vessels, safety valves, filters, and control interfaces—are factory-installed and tested. This design ensures stable operation, simplified commissioning, and reliable long-term performance, while minimizing on-site installation work.

Key Hydraulic Interfaces & Components

1. Heat Pump Water Inlet / Outlet
   Connection between the outdoor heat pump and the indoor hydraulic unit for energy transfer.

2. Heating Zone 1 Supply & Return
   Dedicated connections for the primary heating circuit (e.g. underfloor heating).

3. Heating Zone 2 Supply & Return
   Additional heating circuit support (e.g. radiators or mixed systems).

4. Buffer Tank
   Stabilizes system operation, reduces cycling, and improves overall efficiency.

5. Domestic Hot Water (DHW) Tank
   Integrated hot water storage for household domestic hot water supply.

6. DHW Supply Outlet
   Hot water outlet to household tapping points.

7. Cold Water Inlet
   Connection to the municipal cold water supply.

8. DHW Recirculation Connection
   Interface for domestic hot water circulation loop, ensuring fast hot water delivery and improved comfort.

9. Circulation Pumps
   Integrated pumps for heating circuits and DHW circulation.

10. Expansion Vessels (Heating & DHW)
    Compensate system pressure changes and ensure safe operation.

11. Safety Valves & Drain Valves
    Protect the system and allow safe maintenance and servicing.

12. Magnetic Filter
    Protects system components by removing impurities from the hydraulic circuit.