Richmond point of use water heater

[Otahyoni]

I'm looking at getting a Richmond 6EP6-1 for my camper because the OE water heater was allowed to freeze and burst by the P.O...

I found the dimensions (15.75" x 15.25") but what i can't find are the required clearances.

I like this heater because of the flat top and it's short enough to fit under my planned bed, but i need to know how much space i need above the unit for safety...

 

[havasu]

I have been on Google for 1/2 hour and I can not locate the minimum requirements at all. It does state that this unit is designed for campers with space limitations, so I would tend to say that if you have enough room to install the unit, you are good to go. I would leave at least 1"-2" clearance on the sides to be safe. Are you going to line the cabinet at all with a fireproofing material?

 

[Otahyoni]

I searched and couldn't find anything either... :/

It will have plenty of room around the sides, i'm concerned about above it since it will be under the bed. I don't plan on putting any fire-resistant material around the heater.