The image at the bottom shows the rules for Force Mainsin InfoSewer and H2OMap Sewer:
1. Gravity Main
2. Wet Well
3. Pump
4. Chamber Manhole
5. Force Main if you have many force mains the node BETWEEN two force mains has to be a Chamber Manhole
a. The error messages for this are now rigorously enforced and they may not have been in past versions
6. Loading Manhole
7. Gravity Main
via Blogger http://www.swmm5.net/2013/12/rules-for-force-mains-in-infosewer-and.html