buffer tank
JPSRR 825 · without insulation
JPSRR Type 825 · High-performance solar buffer storage tank with 2 heat exchangers.
Item No. 121825
- nominal capacity
- 680
- Ø without insulation
- 790 mm
- Height
- 1,693 mm
- Weight
- 176 kg
Tank 121825 In stock
As of Oct 28, 2026
EAN 4250659500680
Dimensions and weights
- Ø without insulation
- 790 mm
- Height
- 1,693 mm
- tilt height
- 1,711 mm
- Installation dimensions
- 800 mm
- Weight
- 176 kg
Connections
Letters as shown in the illustration
| Letter | connection | Height | Size | Thread | Angle |
|---|---|---|---|---|---|
| E | Connection 1 | 260 mm | 1½" | Female thread | 14.5° |
| E | Connection 1 | 260 mm | 1½" | Female thread | 114.5° |
| E | sensor sleeve | 260 mm | ½" | Female thread | 92.73° |
| K | Heating Return Index below RL | 260 mm | 1¼" | Female thread | 36.27° |
| F | Connection 2 | 630 mm | 1½" | Female thread | 14.5° |
| F | Connection 2 | 630 mm | 1½" | Female thread | 114.5° |
| F | sensor sleeve | 630 mm | ½" | Female thread | 92.73° |
| J | Heating flow line Index at the bottom: flow | 930 mm | 1¼" | Female thread | 36.27° |
| G | Connection 3 | 1,030 mm | 1½" | Female thread | 14.5° |
| G | Connection 3 | 1,030 mm | 1½" | Female thread | 114.5° |
| G | sensor sleeve | 1,030 mm | ½" | Female thread | 92.73° |
| M | Return of Solar Index at the top: RL | 1,070 mm | 1¼" | Female thread | 36.27° |
| H | Connection 4 | 1,430 mm | 1½" | Female thread | 14.5° |
| H | Connection 4 | 1,430 mm | 1½" | Female thread | 114.5° |
| H | sensor sleeve | 1,430 mm | ½" | Female thread | 92.73° |
| L | Solar Flow Index at the top, left, flow | 1,430 mm | 1¼" | Female thread | 36.27° |
| I | Top connection | 1,690 mm | 1½" | Female thread | 0° |
Technical Specifications
Volume
- nominal capacity
- 680
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
Miscellaneous
- Installation dimensions
- 800 mm
specification text
ENERGY BUFFER TANK
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
- 680 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. Dimensions without insulation: 790 x 1690 (Ø x H) mm
- Manufacturer
- Juratherm GmbH
- Match Code
- JPSRR 825
- Weight
- ~165 kg
- Tilt height
- 1740 mm
- EAN13
- 4250659500680
Product video
JPSRR 825 in motion
