Installation of the heater went as expected after viewing several utube videos and reading the manual, to ensure I had a suitable location. Since the composite mount kit was out of stock, I used the Delisheng 3 3/4” duct connector ($10 on Amazon) to go through the floor. I also installed a silicone coated fiberglass heat shield sleeve ($18 on Amazon) for additional protection. I ordered your combustion exhaust air silencer kit and will evaluate ordering the intake silencer depending on the remaining noise level.
The heater started up on the third try so I avoided the fault lock-out. Sound level is relatively low and having the supplemental heat (and now primary heat option) will expand camping options and camping comfort.
Happy that installation and performance met expectations.