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World Heat Cylinders · 0161 343 8610 · sales@whcylinders.co.uk
Domestic · Unvented cylinder
Solar Unvented Cylinder
Unvented cylinders with a solar coil, as a single (direct) or twin coil cylinder. Standard sizes from 150 to 300 litres, with other sizes built to order.
- 150–300 L standard sizes
- Coil 1.1 m²
- ErP class B–C
- Slim and standard diameters
- Made in our UK factory
Specifications Datasheets & downloads
Made in Manchester- ISO 9001
- WRAS
- G3
Technical data
Specifications
Solar-Therm Direct
| Capacity (litres) | 150 | 180 | 210 | 250 | 300 |
|---|---|---|---|---|---|
| Product code | 150SDSSFLOW | 180SDSSFLOW | 210SDSSFLOW | 250SDSSFLOW | 300SDSSFLOW |
| Height (mm) | 1,154 | 1,280 | 1,468 | 1,718 | 2,031 |
| Diameter (mm) | 550 | 550 | 550 | 550 | 550 |
| Empty (kg) | 35 | 40 | 45 | 50 | 55 |
| Full (kg) | 185 | 220 | 255 | 300 | 355 |
| Coil (m²) | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 |
| 3 kW immersion | 1 | 1 | 1 | 1 | 1 |
| Secondary return | No | No | Yes | Yes | Yes |
| Heat loss (kWh/24h) | 1.31 | 1.60 | 1.85 | 2.10 | 2.31 |
| Heat loss (W) | 54.58 | 66.67 | 77.08 | 87.5 | 96.25 |
| ErP | B | C | C | C | C |
Solar-Therm Direct slim
| Capacity (litres) | 150 | 180 | 210 |
|---|---|---|---|
| Product code | 150SDSSFLOWSLIM | 180SDSSFLOWSLIM | 210SDSSFLOWSLIM |
| Height (mm) | 1,474 | 1,690 | 2,003 |
| Diameter (mm) | 475 | 475 | 475 |
| Empty (kg) | 33 | 38 | 43 |
| Full (kg) | 183 | 218 | 253 |
| Coil (m²) | 1.1 | 1.1 | 1.1 |
| 3 kW immersion | 1 | 1 | 1 |
| Secondary return | No | No | Yes |
| Heat loss (kWh/24h) | 1.41 | 1.52 | 1.59 |
| Heat loss (W) | 58.75 | 63.33 | 66.25 |
| ErP | C | C | C |
Solar-Therm Direct horizontal
| Capacity (litres) | 150 | 180 | 210 | 250 | 300 |
|---|---|---|---|---|---|
| Product code | 150SDHSSFLOW | 180SDHSSFLOW | 210SDHSSFLOW | 250SDHSSFLOW | 300SDHSSFLOW |
| Length (mm) | 1,154 | 1,280 | 1,468 | 1,718 | 2,031 |
| Diameter (mm) | 550 | 550 | 550 | 550 | 550 |
| Empty (kg) | 35 | 40 | 45 | 50 | 55 |
| Full (kg) | 185 | 220 | 255 | 300 | 355 |
| Coil (m²) | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 |
| 3 kW immersion | 1 | 1 | 1 | 1 | 1 |
| Secondary return | No | No | Yes | Yes | Yes |
| Heat loss (kWh/24h) | 1.55 | 1.84 | 1.98 | 2.15 | 2.35 |
| Heat loss (W) | 64.58 | 76.67 | 82.5 | 89.58 | 97.92 |
| ErP | C | C | C | C | C |
Figures are from our current product data. Connection positions are confirmed on the drawing for each order. Other sizes and configurations are built to order.
Must be installed by a qualified unvented (G3) installer and registered with building control.
Documents
Datasheets & downloads
ErP labels & data
Certificates
Can’t find a document? Search the downloads library, browse all product datasheets and manuals, or email sales@whcylinders.co.uk.
In detail
About Solar Unvented Cylinder
Solar cylinder standard/slim/horizontal. Solar Unvented Cylinder is designed and built in our own UK factory.
The specification above lists the Solar-Therm Direct, Solar-Therm Direct slim, Solar-Therm Direct horizontal ranges from our current product data. Other sizes, connections and configurations are built to order.
See the rest of our unvented cylinders.
Explore the range
Related products
Need this tailored to your project or system?
Different connections, coil, size, controls or finish: our design team builds to your requirements.
We also build own-brand ranges for OEM partners.
Need a cylinder built to your specification?
From 10 litres to 10,000 litres, our Manchester team designs, manufactures and tests every vessel in-house. We confirm and respond to every bespoke enquiry within 48 hours, and standard range enquiries immediately. If you need a price on a standard product, don’t hesitate to call and speak to one of our team on 0161 343 8610.We confirm and respond to every bespoke enquiry within 48 hours, and standard range enquiries immediately. If you need a price on a standard product, don’t hesitate to call and speak to one of our team on 0161 343 8610.We confirm and respond to every bespoke enquiry within 48 hours, and standard range enquiries immediately. If you need a price on a standard product, don’t hesitate to call and speak to one of our team on 0161 343 8610.