[TRNSYS-users] Assigning a weather file to logical unit

[Christian Herløv Krintel <s103618@student.dtu.dk>]

Hi,
I would like to make a parametric study on building energy use under 
different climates. I read that this can be achieved with the ASSIGN 
statement.
When I, as a test, write

ASSIGN ".\Weather\US-TMY2\US-AK-Anchorage-26451.tm2" 19

in the control cards of the simulation studio, and put 19 as parameter 2 
of Type 15 (weather) I get the error that the logical unit 19 is already 
in use. I tried different logical units, all with the same error.

What am I doing wrong here?

Best regards
Christian Krintel