Buffer Tank Sunsystem, Model PR 500, Capacity 500L, One heat exchanging coil Vessel

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

Class C - capacity from 300 to 3000 Liters;





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