Product Overview & Application Area
The Schönberg EPSR 1500 is a buffer storage tank with a net capacity of 1388 liters and a permanently installed lower smooth-tube heat exchanger. It serves as a heat storage for water-based heating systems and can be integrated into heating, solid fuel, solar, and CHP systems if the system design is suitable.
Thanks to the lower smooth-tube heat exchanger, the tank is suitable for system concepts where heat is to be transferred via a separate circuit into the lower storage area. The EPSR 1500 supports thermal buffering and hydraulic integration within the overall system.
Technology & Equipment
The storage tank is made of quality steel S235JRG2, is raw on the inside, primed on the outside, and stands on a base ring. The lower smooth-tube heat exchanger is permanently welded in and has a heat exchanger surface area of 3.5 m² on the EPSR 1500.
For system connection, 8 charging and discharging connections with 1 1/2" female thread, 4 sensor and controller connections with 1/2" female thread, an upper vent with 1 1/4" female thread, and 2 connections for electric heating cartridges with 1 1/2" female thread are available.
Everyday Benefits
The EPSR 1500 can temporarily store heat in the heating system, thereby contributing to smoother operation of the overall system. The existing sensor connections enable sensible integration into a suitable system controller.
The STS-EPS insulation is available in 100 mm or 130 mm versions. This allows the tank to be installed initially without an insulation jacket and then fully insulated after placement at the final installation site.
System Integration & Compatibility
The buffer tank is intended for heating water in closed, water-based heating systems. It can be used in conjunction with heat generators, heating circuits, and suitable control components.
The lower smooth-tube heat exchanger can be used for solar or heating circuits, provided that the hydraulics, flow rate, temperature control, and regulation are planned accordingly. Safety valve, expansion vessel, venting, shut-off valves, and sensor positions must be coordinated with the overall system.
Technical data at a glance
The most important technical core data of the Schönberg EPSR 1500 for planning, comparison, and integration into the heating system.
| Tank type | Buffer tank |
| Tank capacity | 1388 l |
| Number of heat exchangers | 1 |
| Heat exchanger surface area (bottom) | 3.5 m² |
| Insulation | 100 mm STS EPS or 130 mm STS EPS |
| Max. operating pressure (tank) | 3 bar |
| Max. operating pressure (heat exchanger) | 10 bar |
| Max. temperature | 95 °C |
| Storage tank material | Quality steel S235JRG2 |
| Height with insulation | 2060 mm |
| Width / depth without insulation | 1000 mm / 1000 mm |
| Tipping dimension without insulation | 2100 mm |
| Weight without insulation | 265 kg |
Assembly
The storage tank must be set up vertically on a level, load-bearing, and frost-free surface. Before installation, check the transport route, door widths, ceiling height, tilting dimension, and installation clearance.
The hydraulic connection, installation of safety devices, sensor positioning, venting, and connection of accessories must be carried out by qualified specialist personnel in accordance with the applicable engineering standards.
Notes
Operating pressure and operating temperature must not be exceeded. Before commissioning, check the connections, venting, safety group, expansion vessel, and the tightness of the system.
Electric heating cartridges may only be inserted into the designated sockets. Electrical installation and testing must be carried out by a qualified electrician.
Scope of delivery
- Schönberg EPSR 1500 buffer tank with integrated lower smooth-tube heat exchanger
