James,
Here's the section of the manual dealing with what you need to set up on your IBM i to use iACS.
https://www.ibm.com/docs/en/i/7.4?topic=solutions-setting-up-i-platform
From drilling into the first bullet:
<snip>You only need to install IBM i Access Family 5770-XW1 Base and Option 1 if you want to use Data Transfer, or Display and Printer Emulation, or IBM i Access for Web.</snip>
A common mistake is to assume that IBM i Access for Web is the same as the http admin interface you get with
http://youribmi:2001 aka the webby "IBM Navigator for i". I think I had to educate Jon Paris on this within the last year or so. "I would think" more people use "IBM Navigator for i" than use IBM i Access for Web, but I may be mistaken.
See also: Optional licensed programs
I strongly recommend installing the freebie 5770-TS1 in that same section. Methinks this is what gives you the capability to download your spool files as PDF files. I put that on every lpar.
<snip>
On a new 7.4 system:
The following items are preselected if you are installing licensed programs as part of a new system installation.
5770-SS1 Library QGPL
5770-SS1 Library QUSRSYS
5770-SS1 option 1, Extended Base Support
5770-SS1 option 3, Extended Base Directory Support
5770-SS1 option 30, QSHELL
5770-SS1 option 33, Portable App Solutions Environment
5770-DG1, IBM HTTP Server for i
5770-JV1, IBM Developer Kit for Java(tm)
5770-JV1 option 17, Java SE 8 64 bit
</snip>
https://www.ibm.com/docs/en/i/7.4?topic=ialp-using-work-licensed-programs-menu-install-licensed-programs#contlp
You can probably change the 7.4 in the URL above to 7.3 and maybe 7.2. 7.1 and earlier are less likely to work.
Rob Berendt