Camplux instant hot water heater

[Laurencee]

Please point me in the right direction if this is the wrong place to ask this. I am installing a camplux propane instant hot portable water heater at the cabin and wanted to run some things by you. Outdoor shower will be at the back of the house and the sink is at the front. Was going to mount the unit on the west side of the house where there is plenty of shade. Any recommendations?