Buffer Tank Sunsystem, Model PR 2500, Capacity 2500L, One heat exchange coil, Industrial

Saving energy and money is achieved using buffer vessels of the Sunsystem PR series in the central heating system.


€2,500.00 €2,083.33
Availability: In stock

The buffer tanks of series PR of the company SUNSYSTEM used for improving the performance and efficiency of heating, through the production and storage of hot water, which is used in the central space heating system. These specific buffer tanks allow the use of up to 2 external heat sources and optional kit for electric heating with nominal power  3kW, 4.5kW, 6kW or 7.5kW.

Accumulates the heat generated by boiler; recommended for each space-heating system.  Ensures optimum operating mode of biomass boiler, permitting its functioning at nominal power output even when the heating system does not need all the heat energy produced thereby.
Produced heat is accumulated and stored inside the buffer tank and can be used even when the boiler itself has cooled down.

Product Features

  • Range of volumes of 300-3000 liters
  • Upright storage tank made of steel S235JR
  • Primer coated on the outside
  • CFC free soft PU-foam insulation with thickness of 100 mm 
  • PVC coating in RAL 9006 or other colors on demand
  • All threads are internal
  • Option for installing a heating element as back-up source of heat
  • Compressive strength 3 bar

Energy efficiency Buffers

Energy Efficiency Directive 2010/30 /EU, 
Regulation 812/2013:

Class E - capacity from 300 to 500 Liters;
Class Е - capacity from 800 to 1000 Liters;

Buffer tank PR series

1. Aesthetic PVC jacket with color RAL 9006
2. Primer coated outer surface
3. Removable insulation
4. Water tank of low-carbon steel
5. Lower coil S1

More Information
Warranty 2 Years
Weight (kg) 465.0000
Country of Manufacture Bulgaria
Water capacity/content (L) 2500
Heat exchanger coil One heat exchanger coil
Installation Free standing
Dimension Height (mm) 2730
Height without insulation (mm) 2680
Diameter (mm) 1350
Diameter without insulation (mm) 1150
Minimum vertical clearance (mm) 2730
Insulation weight (kg) 30
Thermometer optional
Lower coil S1 heat exchanging surface (m²) 4.0
Lower coil S1 capacity (L) 24.6
Buffer operating pressure (bar) 3
Coil operating pressure (bar) 16
Maximum coil operating temperature (°C) 110
More Information
Maximum buffer operating temperature (°C) 95
Recommended size of the boiler connected to the buffer (kW) 45 - 83
Sensor sleeve A (mm) G 1/2'' / 920
Electric heating element B (mm) G 1 1/2'' / 1170
Sensor sleeve C (mm) G 1/2'' / 1690
Air vent sleeve D (mm) G 1 1/2'' / 2680
Boiler heat carrier E (mm) G 1 1/2'' / 2300
Sensor sleeve G (mm) G 1/2'' / 1670
Boiler heat carrier H (mm) G 1 1/2'' / 1670
Boiler heat carrier J (mm) G 1 1/2'' / 1420
Additional sleeve K (mm) G 1 1/2'' / 1170
Heat carrier inlet L (mm) G 1'' / 980
Boiler heat carrier M (mm) G 1 1/2'' / 735
Sensor sleeve N (mm) G 1/2'' / 500
Heat carrier outlet O (mm) G 1'' / 380
Boiler heat carrier outlet P (mm) G 1 1/2'' / 230
Certification CE
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