buffer tank
JPSRR 825 B · Ecoline Vlies silver
Efficiency Class C
JPSRR Type 825 B, assembled, silver (Ø850) · Includes 130 mm fleece insulation
Item No. 840085
- heat loss
- 130 W
- Standby loss
- 3.11 kWh/24 h
- ErP Volume
- 815
- Weight
- 187 kg
Tank 121825B Delivery time: approx. 4–6 weeks
Insulation 9978253 In stock
Total Delivery time: approx. 4–6 weeks
As of Oct 28, 2026
EAN 4250659505074
Dimensions and weights
- Ø with insulation
- 1,050 mm
- Ø without insulation
- 850 mm
- Height including insulation
- 1,730 mm
- Height without insulation
- 1,690 mm
- tilt height
- 1,765 mm
- Weight
- 187 kg
- Insulation thickness
- 130 mm
Connections
Letters as shown in the illustration
| Letter | connection | Height | Size | Thread | Angle |
|---|---|---|---|---|---|
| E | Connection 1 | 260 mm | 1½" | Female thread | 13.5° |
| E | Connection 1 | 260 mm | 1½" | Female thread | 113.5° |
| E | sensor sleeve | 260 mm | ½" | Female thread | 93.27° |
| K | Heating Return Index below RL | 260 mm | 1¼" | Female thread | 33.73° |
| F | Connection 2 | 630 mm | 1½" | Female thread | 13.5° |
| F | Connection 2 | 630 mm | 1½" | Female thread | 113.5° |
| F | sensor sleeve | 630 mm | ½" | Female thread | 93.27° |
| J | Heating flow line Index at the bottom: flow | 930 mm | 1¼" | Female thread | 33.73° |
| G | Connection 3 | 1,030 mm | 1½" | Female thread | 13.5° |
| G | Connection 3 | 1,030 mm | 1½" | Female thread | 113.5° |
| G | sensor sleeve | 1,030 mm | ½" | Female thread | 93.27° |
| M | Return of Solar Index at the top: RL | 1,070 mm | 1¼" | Female thread | 33.73° |
| H | Connection 4 | 1,430 mm | 1½" | Female thread | 13.5° |
| H | Connection 4 | 1,430 mm | 1½" | Female thread | 113.5° |
| H | sensor sleeve | 1,430 mm | ½" | Female thread | 93.27° |
| L | Solar Flow Index at the top, left, flow | 1,430 mm | 1¼" | Female thread | 33.73° |
| I | Top connection | 1,680 mm | 1½" | Female thread | 0° |
Technical Specifications
Volume
- nominal capacity
- 762
heat exchanger
- Heat exchanger Bottom Surface
- 2.8 m²
- Heat exchanger Top Surface
- 1.8 m²
- Operating pressure of storage tanks
- 4.5 bar
- Test pressure of the storage tank
- 7.8 bar
- Max. Pressure heat exchanger
- 6 bar
insulation
- Insulation thickness of the jacket (assembled)
- 130 mm
- Insulation thickness of the jacket (raw)
- 145 mm
- Insulation thickness of the lid
- 150 mm
- Insulation color
- silver
- Lambda
- 0.0388 W/mK
- Bulk density
- 2340 g/m²
- Fire rating
- B2 according to DIN 4102
Energy (ErP)
- ErP Class
- C
- ErP - Heat loss (W)
- 130 W
- ErP – Heat Loss (kWh)
- 3.11 kWh
- ErP - Contents
- 815
specification text
ENERGY BUFFER TANK incl. insulation
Buffer tank for all hot water central heating systems. Suitable for: solid fuel and oil-fired boilers, heat pumps, solar systems, and gas or electric instantaneous water heaters. Manufactured from high-quality S235JR steel in accordance with EN 10025 and EC Directive 97/23/EC; exterior with anti-corrosion coating, interior left unfinished. Includes a sensor terminal strip for variable positioning of the sensors.
- Nominal capacity
- 762 L
- Operating pressure of storage tanks
- 4.5 bar
- Test pressure of the storage tank
- 7.8 bar
- Minimum pressure in the storage tank
- +0 bar
- Max. operating temperature
- 95°C
- Min. temperature
- 20 °C
- Heat exchanger Bottom Surface
- 2.8 m²
- Heat exchanger Top Surface
- 1.8 m²
- Max. Pressure heat exchanger
- 6 bar
Features
- 4 x 1½" sockets (system connection on the left)
- 4 x 1½" sockets (system connection on the right)
- System connections, including layer baffle plate
- 1 x 1½" socket (air vent)
- 4 x ½" sockets (standard sockets)
- 4 x 1" Socket (heat exchanger)
- 1 x Center partition plate
The system connection ports are spaced 100° apart.
Insulation Details
- Material
- Polyester fiber nonwoven
- Insulation color
- Silver
- Insulation thickness of the jacket (assembled)
- 130 mm
- Lambda
- 0.0388 W/mK
- Fire rating
- B2 according to DIN 4102
- Temperature Resistance
- 110 °C
- Bulk density
- 2340 g/m²
- Includes 50 mm floor insulation
- ErP Class
- C
- ErP - Heat loss (W)
- 130 W
Dimensions with insulation
- 1050 x 1730 (Ø x H) mm
- Manufacturer
- Juratherm GmbH
- Match Code
- JPSRR 825 B, assembled, silver
Assembly consisting of
- JPSRR Type 825 B
- Fleece insulation, Type 825B
- Weight
- ~187 kg
- Tilt height
- 1765 mm
- EAN13
- 4250659505074
Composition
- 121825B JPSRR Type 825 B tank · High-performance solar buffer storage tank with 2 heat exchangers.
- 9978253 Fleece insulation, Type 825B insulation · JPSM/R/RR 130 mm silver d=850
Product video
JPSRR 825 B in motion
Downloads
Energy label required only for tanks up to 500 liters