road heat

[Iver]

I have a MC-9 and have also removed the fans and ducting for the road heat.

I would like to run a loop from the main lines where the main heater core now sits to a small heater by the passenger seat.  How should I set up the plumbing? Do I need a circulation pump?
           Thanks,  Iver.

[jlaney]

iver
my prevost has a 871 engine and the hot water from the engine run up into the bus above the floor , down the left hand side which is the drivers side. and go's down into the a/c bay and hooks up with the circulation pump. i am not using any pump except the engine water pump to circulate the hot water up to the front defrost unit. the line start out as 1 3/8 copper. j.t.