Typical cold plate with primary and secondary loop connections
There was a primary and secondary coolant loop. Here are some schematics of the system.
Simplified schematic of the HTS
The following one dates back to year 1966 and might have some differences to later drawings.
HTS year 1966
Maybe more accurate flow diagram.
HTS drawing year unknown
Here is the most detailed schematic from year 1965 showing the whole ECS but there are probably drawing errors in it since for example the primary loop at the lower left corner does not have any output from the cold plates connected to the actual coolant loop.
ECS year 1965
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