| 摘要 |
The pipe parts of the network are preferably foamed into three planes one above the other in an insulating material block (46). At least a number of the pipe parts with at least one end-side connection (1-16,17,17a to 20,20a) extend out of the insulating material block (46). The pipe parts are straight pieces or are assembled from the straight pieces to form L, T or U shapes. Also the pipe connecting parts between the planes are straight pipe pieces.
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