I am sorry. I am usually pretty good at digging up manuals... I really made good faith effort looking for one and came up with a goose egg.
I did find their present website--
Multico's Website
But I don't see that helping you as the website is broke, even the site's "Contact" page is coming up as missing. (Thought maybe to contact them to email one...)
Again- Sorry on my part. I tried.
EDIT-- But if you just want to set it up. I can give you some general instructions for that...