Description
Vaillant uniSTOR 250 Litre Pre-Plumbed Heat Pump Cylinder (0020237131)
Features:
- Fully compatible with the Vaillant heat pump range
- Range of options and accessories to cater for a wide range of projects and requirements
- Superior insulation and efficiency
- Thermal injected polyurethane insulation combined with vacuum panels – Superior insulation and efficiency
- Large diameter, smooth coil technology – Provides quiet operation, reduces build-up of scale and aids in long-term efficiency through automatic descaling.
- Global Warming Potential less than 5 and ozone depletion of 0 – Designed around environmental requirements.
- Thermodynamically positioned sensor pocket – Optimises system performance.
- Expansion vessels included or available as accessories – Complete system solution offering whilst meeting all building regulations.
Specifications:
| Total tank capacity (l) |
249.2 |
| Actual capacity (without coil volume) (l) |
236.3 |
| Hot water capacity / draw off* (l) |
211.0 |
| Standby losses (kWh/24h) |
1.4 |
| Energy-related Products (A+ -F) |
B |
| Reheat time (70%)* Calculation from test EN 12897 (mins) |
10.6 |
| Coil rating (kW) |
40.7 |
| Heat exchanger volume (l) |
12.9 |
| Heat exchanger surface (m²) |
2.4 |
| Primary flow rate (l/h) |
900 |
| Heat exchanger pressure drop (mbar) |
170 |
| Maximum operating DHW temperature (°C) |
85 |
| Maximum operating heat circuit temperature (°C) |
95 |
| Quantity of temperature sensor tubes (qty) |
1400 |
| Size of supplied expansion vessel (l) |
25 |
| Immersion heater rating (kW) |
3.0 |
| Immersion heater cable size (mm) |
1.5 |
| Immersion heater current (A) |
13 |
| Outer diameter with insulation (mm) |
595 |
| Height with insulation (mm) |
1535 |
| Net weight empty cylinder (kg) |
73.3 |
| Weight of filled cylinder (kg) |
313.6 |
| Insulation thickness (mm) |
50 |
| Primary heat exchanger flow & return connection (BSP female) |
3/4″ |
| Cold & hot water connection (BSP female) |
3/4″ |
| Temperature sensor sleeve diameter (mm) |
8 |
| Immersion heater boss diameter (BSP female) |
1 1/4″ |
Click here to view the Data Sheet.
