I hope someone can help me out here 
I have a motorhome with a dual LNB in-motion dish on the roof and I just ordered DirecTV service with HD channels and DVR service and the installer dropped off the HD DVR at the house.
I am confused by something called "B Band Converter Module for Ka-Lo band up-conversion" units (there are two of them).
Do I connect these to the back of the DVR and then to the feed lines from the LNBs?
From the diagram it appears that they are used on triple or 5 LNB setups and as I only have a dual LNB I assume that I will have to change satellites manually to get all of the stations (which is not a problem) so if I install them on both feed lines will they interfere with anything?
As you can see, I'm a bit confused on how to configure this exactly.
Thanks for any help you can give

I have a motorhome with a dual LNB in-motion dish on the roof and I just ordered DirecTV service with HD channels and DVR service and the installer dropped off the HD DVR at the house.
I am confused by something called "B Band Converter Module for Ka-Lo band up-conversion" units (there are two of them).
Do I connect these to the back of the DVR and then to the feed lines from the LNBs?
From the diagram it appears that they are used on triple or 5 LNB setups and as I only have a dual LNB I assume that I will have to change satellites manually to get all of the stations (which is not a problem) so if I install them on both feed lines will they interfere with anything?
As you can see, I'm a bit confused on how to configure this exactly.
Thanks for any help you can give