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Stratification cylinder

The BSP-W multi function cylinder harnesses the energy of the sun and provides you with heating energy and DHW. It is specially designed to be combined with a heat pump.

Alongside solar thermal systems, heat pumps are the most environmentally responsible appliances for providing DHW and central heating. The WOLF BSP-W stratification cylinder is specially designed for utilising resources drawn from the environment. It can also be combined with all commonly used heat generators, such as oil, gas, wood or pellet boilers.

The BSP-W is ideal for use with a heat pump because its freshwater module where the DHW is heated is designed for very low temperatures, making heat pump operation particularly efficient. To ensure optimum use of solar thermal energy, a smooth tube indirect coil is fitted in the bottom of the cylinder. This makes the very most of the sun's energy to heat the cylinder water.

  • Specification

The BSP-W stratification cylinder enables integration of a heat pump into your heating system and is optimised for use with an additional solar thermal system.

The BSP-W is ideal for use with a heat pump because its freshwater module where the DHW is heated is designed for very low temperatures, making heat pump operation particularly efficient. In brief, by combining a BSP-W stratification cylinder, a heat pump and a solar thermal system you are creating a particularly sustainable system.

  • Solar energy backs up your heating system by means of the stratification cylinder
  • The stratification technology ensures that water is always drawn from the hottest layer. This means that energy losses are kept to a minimum, reducing costly reheating and thereby saving energy and protecting the environment
  • Separating plates stratify the water inside the cylinder into different thermal zones and so significantly improve the solar yield
  • The freshwater module always provides the right amount of hygienic DHW to meet your current needs
  • Short throughput times and small amounts of hot water in the system prevent the growth of legionella bacteria
  • The thermal insulation is removable; this is particularly advantageous for retrofitting, as narrow basement entrances and rooms often make assembly in the installation room difficult
  • Hydraulic components such as a freshwater module, up to two circuits with mixer (for radiators and underfloor heating) and a solar pump/valve assembly can be fitted directly to the cylinder, ensuring a clean look and clutter-free boiler room
  • The DHW circulation set is controlled by timer, thermostat or by opening the water tap, guaranteeing hot water immediately without a long wait
  • The single cylinder system prevents heat losses 
Model / Performance
  • BSP-W-1000
Please choose model
Stratification cylinder BSP-W
Model type BSP-W-1000

General Info

Size / weight

Diameter incl. thermal insulation (mm) 1000
Height incl. thermal insulation (mm) 2110
Total weight - empty (kg) 194

Cylinder systems

DHW cylinders -
Dual mode DHW cylinders -
Heating water buffer cylinders -
Heating water buffer cylinders with integral DHW heating x
Freshwater modules -

Combination with

Heat pump x
Solar x

DHW heating

DHW output (l/Min)10 l/min bei 50 °C Puffer- unf 46°C Warmwassertemperatur
Cylinder size (equivalent)915
DHW capacity (Ltr.)-
Standby heat loss (kWh/24h) 3,22


Suitable for DHW heating x
Suitable for central heating x
Suitable for solar thermal x
Suitable for heat pump x
DHW heating with instantaneous water heating principle (integral hygiene function) x


If you really want to do something for the environment without losing out on convenience, then opt for a solar thermal system, heat pump and advanced cylinder from WOLF.

Create your perfect indoor environment – with sustainable energy drawn from the sun and the air. The right stratification cylinder enables you to harness these energy sources as efficiently as possible. This is because the highly accurate temperature stratification in the cylinder is fully tailored to your required temperature, while also maximising your solar yield. The result is a pleasantly warm interior and sufficient hot water at all times, with the added benefit of knowing you are doing something positive for the environment.


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