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From our own experience and from researching the different international regulations on solar energy, it’s recommended that when the fluid volume between the collector and the expansion vessel is less than 50% of the “wet side” volume (between the extended diaphragm and the vessel inlet) the use of an additional tank is recommended. This approach is covered by European Directive VDI 6002.
The VSG vessel provides a method of heat dissipation above the expansion vessel, protecting the membrane from excessive temperatures. The correctly sized additional tank also allows a decrease in the temperature of the solar liquid in the expansion system.
It is worth remembering that this option is rarely used when the heating system is placed on the roof due to the fact that the piping runs are shorter than normal.
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Technical information
*Insulation not included |
| Product List | ||||||||
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| Code | Name | Capacity (Litres) | Diameter (Ømm) | Connection Height (mm) | Connection (ØC) | |||
| 11A0000512 | 5 Litre Volumiser Vessel | 5 | 160 | - | 3/4" | |||
| 11A0000837 | 8 Litre Volumiser Vessel | 8 | 200 | - | 3/4" | |||
| 11A0001216 | 12 Litre Volumiser Vessel | 12 | 270 | - | 3/4" | |||
| 11A0001836 | 18 Litre Volumiser Vessel | 18 | 270 | - | 3/4" | |||
| 11A0003510 | 35 Litre Volumiser Vessel | 35 | 380 | 125 | 3/4" | |||
| 11A0005022 | 50 Litre Volumiser Vessel | 50 | 380 | 145 | 3/4" | |||
| 11A0010518 | 105 Litre Volumiser Vessel | 105 | 500 | 165 | 1" | |||
Have questions about our products or need advice? Tell us about your project and we will help you choose the right model for the job.
Call us on 01889 272185 or email us at sales@zilmet.co.uk
Zilmet is Europe’s biggest manufacturer of high quality expansion vessels and plate heat exchangers.
