Good list back in 2006 re possible inlets and outlets for ICF house.  Can anyone be more specific, though, about:
1) How you handle a 3" heat exhaust vent pipe from a Rinnai 1004.  Put in a bigger sleeve?  Buy the vent sleeve and pour around it?  How you secure and seal it?  What do you attach the end piece to when there's no siding?
2)  Same for 6" round HRV inlets and outlets  
3)  Same for 4" bath fan and dryer vents

I can at least say I get how to do conduits for incoming water, electric, propane, etc.!  Thanks!

Did you get this question answered? We always use PVC sleeves that are slightly larger than the penetration needed, then pour and then insert the respective penetration. I would NEVER install the actual piece (pipe, ductwork, etc)and pour around it. If something goes wrong or needs to be replaced down the road, you just have to remove the foam that seals the interior pipe from the actual service pipe as opposed to tearing into concrete.

Hopefully I understand what you mean and helped. If not please reply.

I agree with rykertest, i am a plumber/hvac contractor, and we always use pvc pipe for any penetrations. i usually cut a slit lengthwise through the pipe and then tape over the cut. The reason for that is that it makes it much easier to remove the sleeve after wards. For the tankless water heater vent, i would use a larger sleeve, then remove it after the pour, after the venting is in place, use rock wool insulation to make up the space between concrete and your vent pipe.
Seal exterior with a high heat sealant, and paint to match.

Caymanty,

Why do you remove the PVC sleeve?  Are you concerned about the PVC sleeve burning?  If so, then there would be no need to remove the sleeve if there was no heat involved.  Right?