VEVOR RV Tankless Water Heater, Instant Shower with 15 x 15 inches White Door and Remote Controller, 55000BTU Optimized Comfort Performance Hot Water, Ideal for RVers' Family Everyday Use

I did not find any information about using this water heater with a solar panel setup in the product description or customer reviews.

It can be converted to lp.

Yes the 55,000 BTU version also has the outside access/connection door setup like the 42,000 and 65,000 BTU models. It is designed as an RV exterior wall-mounted unit with the service door visible from outside the RV. The water, gas, and vent/exhaust connections are accessed from the rear/interior side during installation.

The front exterior door is mainly for the intake/exhaust assembly and exterior access panel. if this answer does not resolve the current issue, please contact us again for assistance.

Requires both DC 12V power and gas to operate simultaneously.

Yes, it can replaced your Suburban 10 gallon water heater.

Sorry, we do not have this currently.