Hopefully, if you have to make the run, you won't use hose, but 1-1/2" aluminum tubing.  

Moreover, if some outside air could be channelled over the tubes, it would increase your thermal transfer.

Dale R.

> Actually, with a long run, the larger diameter hose is called for to keep
> the pressure loss down going to and from the remote radiator. Is it 7 ft
> *each way* (14 ft total)?
> Bill Schertz
>
> >
> > Where did the 2" hose requirement come from?  Wasn't Tracy running with 5/8" hose to his radiators?  Can we get a survey of working installations to see what size hose is sufficient?
> >
> > This is a significant issue for me.  I'm considering a remotely located radiator.  Running 2" hose for 7ft or so is out of the question.
> >