How to Install Dimplex Opti-Myst Water Vapor Fireplace

The cassette is the flame unit on its own, built to drop into a surround you or your installer make. The firebox is a finished enclosure with the cassette already fitted. They install differently, which is why there is a separate unboxing video for each above.

No. It will run from refillable bottles you top up by hand. The Opti-Myst Plumb Kit is the alternative: it connects the unit to a water line so it fills itself, and it has its own manual and its own video above.

Either. There is a hardwiring video above and a separate one for the Opti-Myst Plug Kit, which is the accessory that lets it run from a standard plug instead. Which route is allowed comes down to local code, so settle that with an electrician before the opening is framed.

Because the flame effect is generated on a water reservoir inside the unit. Dimplex publishes a dedicated leveling video for the cassette, which is a good indication of how much it matters, and it is far easier to get right before the surround is closed up than after.

They dress the opening and set how the fuel bed sits above the cassette. All of it goes in after the unit is installed and leveled, and any of it can be swapped later for a different look without pulling the fireplace back out of the wall.

All of them are linked at the bottom of this article as PDFs: the Pro cassette, the Pro firebox, the Plug Kit, the Plumb Kit and the log set. Use them alongside the videos rather than instead of them, since the manual carries the figures a video never stops to read out.