Depending on the hot water requirements and the amount of sunlight, several solar thermal panels may be required. To make additional panels, repeat the previous steps. However, unlike the blind panel, the feeders must be through, i.e. the two copper pipes, hot and cold water, must protrude at the bottom of the frame on each side. The diameter must increase by 2mm in each additional panel: 12mm for the blind panel, 14mm in the second, 16mm in the third, etc. Care must be taken to properly connect the hot water feeders between them and also for cold water feeders.
- Connect the feeders with hoses.
- Insulate the feeders and their holes through the panels.
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