when I contacted a SPAL distributor/vendor 'the fanman' http://www.the-fan-man.com/shop/siz...?osCsid=3bc69328aed189562027af6f037ce1a3
they said the 2300cfm fan was noisy and he recommanded the 2000cfm that i have in 16'' installed in my rig. whatever blade design,,,,,,, I went for the optimal cfm and their recomendation. the fan has power ALL the time and is ground start off the relays via a switch. it works on 2 relays and a 190 degree napa temp switch that completes the ground circuit to operate the relays at 190 degree water temp.
http://s67.photobucket.com/albums/h298/1951otter/?action=view&current=19A-1-1.jpg ........... see the note and ^^

Last edited by carolines truck; 12/22/2008 6:31 PM.

Jim & Caroline
The highway is for gamblers, better use your good sense."
Gooday-that's my 1¢ answer due to the lousy economy ~ cause I ain't got - no . mo . doe

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