718 Radiators

[WG]

Does anyone know why some 718s have three radiators whilst others appear to only have two. Does PDK require its own additional radiator ?

[Dyffed]

I think maybe the S has a 3rd radiator?

[WG]

Thanks Dyffed. That's what I thought initially but all the brochures show both base and S with the same "blanking grill" in the front centre appature. I even saw some engineering drawings which do show a third radiator but with the caption "for very hot countries only"! I think that excludes UK ! Needless to say the OPC salesman I questioned didn't know either !