bobandjanie
LIFE MEMBER
His motorhome doesn't have radiators. Bob.The pump associated with the HX is used only when you are seeking to pre-warm the engine using residual heat from the Alde radiators. It is not required when you wish to warm the van when driving to your destination as the engine water pump circulates the water to the Alde HX. To operate the heating in the rear when driving simply requires the selector switch on the control unit to be set to heating WITHOUT having gas/electric set as the heat source. This activates the Alde circulating pump as per normal use.
Ian