Vito,
I have a DHW system with external exchanger and external auxiliary heater, so I modeled a Type 60c (TRNSYS 15) with a maximum heating rate (both heater) of 0 W, but I cannot set 0 the number of internal exchanger in fact it gives me an error message, so I have to set 0 the length and the surface of it. There is another option, using the Type 60cnoheat and setting 0 the power of both heater. Why?
You can use Type 4 (which is in Thermal Storage/Stratified Storage Tank) if you don't have any internal heat exchanger. Type 4 is easier to configure and will provide you with the same capabilities in that configuration.
Kind regards, Michaël Kummert -- _________________________________________________________ Michaël Kummert Solar Energy Laboratory - University of Wisconsin-Madison 1303 Engr Res Bldg, 1500 Engineering Drive Madison, WI 53706 Tel: +1 (608) 263-1589 Fax: +1 (608) 262-8464 E-mail: kummert@engr.wisc.edu SEL Web Site: http://sel.me.wisc.edu TRNSYS Web Site: http://sel.me.wisc.edu/trnsys