Search
  1. ...
  2. Homepage
  3. Indoor climate
  4. Products
  5. Heat pumps and heat storage
  6. x-buffer heat storage tanks
  7. x-buffer® combi

x-buffer® combi

x-buffer combi – buffer storage and hot water storage.

The x-buffer combi combines buffer and hot water storage in one, providing cosy warmth for heating and plenty of hot water. All the electrical components are completely prewired and the innovative and flexible cable routing makes for short cable runs in tight spaces.

Highlights
Accessories
Documents and service
Tools and apps
Subsidy programme
Buffer and hot water storage

x-buffer combi

This contains all the crucial components for connecting an x-change heat pump and will impress you with its really straightforward and clear design.

The space-saving combined solution for heating (127 l buffer storage tank) and hot water (231 l domestic water storage tank) simplifies the entire process of installing the heat pump, and saves space and time during installation, thereby reducing the overall investment costs.

All maintenance is carried out from the front; even the 2 magnesium signal anodes featuring a visual indicator for anode replacement can be changed quickly and easily from there.

Advantages

Compatible with:

x-change dynamic (ac) 8 AW E

x-change dynamic (ac) 8 AW I

x-change dynamic terra (pc) 7 / 12 BW I

x-change dynamic water (pc) 10 WW I

  • Buffer storage tank 127 litres

  • 231-litre domestic water storage tank (204 litres useable) with an internal 3.5 m² heat exchanger optimised for heat pumps

  • Integrated three-way switching valve for heating/domestic water with storage charging pump

  • Integrated screw-in radiators with an adjustable thermostat in both storage tanks

  • Circulation connection provided

  • Integrated circulation pump for unmixed heating circuit

  • Hydraulic and electric connections inside the system

  • Storage tank insulated and clad

  • Magnesium signal anode with visual indicator for anode replacement

Guide

Heat storage
Buffer storage systems
Hot water storage systems
Combined storage tanks

heat storage

Not all of the energy generated by the heat pump always gets used immediately. In this case, it makes sense to store the heat generated from renewable energy sources efficiently and with the lowest possible losses. That makes heat storage an important component of any future-oriented heating system.

Whether we are talking about making rooms warm and cosy or providing hygienic domestic water: Heat storage is an important element of all modern heating systems.

Buffer storage systems

Buffer storage tanks keep heat generation and heat consumption completely separate. This means that heat is generated regardless of when it is consumed and your heat pump does not have to start up again every time you turn up a radiator, for example.

Hot water storage systems

Hot water storage tanks ensure that there is always enough hot water available, even if everyone wants a bath.

As with buffer storage tanks, generation and consumption are once again kept separate.

Combined storage tanks

Combined storage tanks incorporate buffer storage and hot water storage in one unit.

The two types of storage are kept strictly separate from one another. Combined storage is the optimal solution if you don’t have much space in the cellar but still want to have an efficient and environmentally friendly storage system.

Installation video

The special layering process ensures optimum stratification of water layers at different temperatures within the Kermi x-buffer layered buffer storage tank.

This process, which has a patent pending, all but eliminates turbulence so that virtually no mixing of cold and warm water can occur. The water flows into the storage tank slowly and can rise or sink, depending on the temperature. Together with the high-quality all-round insulation, this significantly minimises energy losses.

The innovative housing design of the x-buffer layered buffer storage tank makes it a great space-saving alternative.

The system takes up no more room than a conventional heating tank. Thanks to the special base design, the tilt dimension (when the tank is tilted diagonally) barely exceeds the installation height. As a result, the x-buffer layered buffer storage tank also differs from conventional storage models in terms of its external appearance and is absolutely ideal for low-ceilinged rooms in existing buildings. With the intelligent arrangement of the connections, the x-buffer also fits through narrow doors.

Five-year system warranty

Five-year system warranty

The day is finally here – your new Kermi heating system, or perhaps a Kermi ventilation system, has been installed. There is now nothing to stop you feeling cosy at home. Our five-year system warranty is a testament to the quality of our products and our service promise to you.

Find out more

Accessories

Fresh water station

The fresh water station for wall mounting is available in 4 different versions.

The electronically controlled hot water generation relies on the continuous flow principle, ensuring that hot water is heated as hygienically as possible and in line with demand.

The speed-controlled charge pump regulates the set tap temperature quickly and efficiently.

The Modbus interface for direct communication with the Kermi® x-center® control ensures maximum operating comfort via the heat pump control – optionally, up to 4 fresh water stations can be combined in a cascade

Fresh water station cascade set

A cascade set is needed for each additional fresh water station.

A maximum of four fresh water stations can be combined in total.

To install a fresh water cascade, you need a fresh water station with circulation to serve as the master; each additional slave station is then implemented without circulation.

Storage charging assembly

The storage charging assembly for wall mounting is available in different versions.

The integrated storage charging pump is speed-controlled (PWM) so that charging with the modulating x-change dynamic (pro) heat pump series can take place efficiently and in line with demand in every operating mode.

The components are pre-assembled on a platform and the insulation is already incorporated as well.

Heating circuit assembly

The “unmixed heating circuit” assembly consists of a circulation pump (delivery head of 6 m or 9 m) and the corresponding shut-off devices.

The “mixed heating circuit” assembly also has a mixer.

These components are pre-assembled on a platform and the insulation is already incorporated as well.

x-buffer heat storage tanks

Storing heat with as little loss as possible.

Discover our heat storage solutions
x-buffer combi pro heat storage tanks
x-buffer combi pro
x-buffer combi heat storage tanks
x-buffer combi
x-buffer flex heat storage tanks
x-buffer flex
x-buffer compact cool heat storage tanks
x-buffer compact cool
x-buffer compact/cascade heat storage tanks
x-buffer compact/cascade
x-buffer fresh heat storage tanks
x-buffer fresh

Documents

Pricelist
Brochures
Datasheet
Certificate
Instruction
Technical information

Images

Go to download centre

Videos

Find out more now

Customer service

x-change heat pump/x-center control

Onlineformular x-change Wärmepumpe / x-center Regelung

Quotation and planning service for x-change heat pump/x-center control

Form

Kermi contacts for specialist partners

Indoor climate servicing request

Do you want to submit a servicing request?

Find out more

Indoor climate technical design

Questions covering every aspect of technical design

Find out more

Indoor climate survey

Contact us if you need a survey

Find out more

BIM

IT data

Commercial data sets

Find out more

App centre

Find out more

Portals for specialist partners in plumbing, heating, and air conditioning (SHK)

Find out more

Calculation programs

Find out more

Are you looking for a Kermi specialist partner near you?

With our search, you can find a specialist partner near you that can assist you with consultation plus exhibition, with planning or with consultation and installation.