Personally I would use an Atwood 10 gallon pilot only water heater.
Through Tube Combustion Chamber....... chamber/exhasut runs diagonally from lower right side to upper left side of tank (Suburban's 'U' Tube is stacked directly above each other far right side). Diagonally allows more surface contact.
Uses 10,000 btu/hr with a 13,2 gallon per hr recovery rate (Suburban 12,000 & 10.2 recovery)
Aluminum tank (clad with aluminum/zinc alloy) so no anode rod required (Suburban STEEL tank with porcelain lining....cracks/steel needs anode rod)
Lighter weight unit/smaller size vs Suburban
Pilot ignition......on both so stand alone operation/no DC needed
(Only pilot with re-ignition or DSI Units need the DC)
