Originally Posted by
walkee
Hi Blaine,
thanks a lot for your detailed info and the pics !
But now I have another question : the two waterpipes from the heater heading trough the firewall are crossing the position of the assumed fresh air duct.
Are there holes in the duct for the pipes or are they routing a different way when having a fresh air heater ? Looking at your 1st pic the pipes run parallel to the RH mounting bolt about 1 inch RH from it.
Thanks, Tom
You should be able to reuse the same heater core whether you have or don't have the fresh air option. The fresh air option should be just added onto the heater box and not affect the heater core. But I can double check when I can find some time.