Webasto Air Top 2000ST Installation Instructions Manual page 26

9.4.5 Air circulation example
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A): Air Top 2000ST
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B): Air Top 3500 Marine in 11 m sailing boat:
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C): Air Top 5000 Marine in 13 m sailing boat:
Legend:
open open and/or closable
Heater intake; Y-branch or T-piece;
With the Air Top 5000
use of 90 mm is not possible, it is better to use a Y-piece 90/80/80 and produce two 80 mm main
strings.
26
Marine heating system Installation Instructions
Marine in 9 m sailing boat:
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do not reduce the main line diameter from 90 to 80 mm. If continuous
Outlet
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