No, it is as seen in the vid, just behind the bumpers lower edge Paul. Bear in mind that in normal fueling situations it would hardly have any smoke in the exhaust, and of course when you are traveling, it is just sucked under the car as steve says.
You do get a bit of smoke off the silencer as it heats up though.
Here is another Vid from another beta tester, testing the Disco 4 FBH functions of the MSV-2, it's physically an identical set up in the D3 where you can see the smoke coming off the silencer.
Hiya Steve, welcome back and a happy new year to you too.
TD6, ohh that's taking me back a bit.
I know that there is a setting in the Hevac for it called Park Fuel Burning Heating
So it looks like the remote is supposed to connect to the Hevac which then sends the data to the FBH to engage it.
The timing, whilst adjusted in the Mid or LCD, is controlled by the Instrument pack. Like the trip computer functions, the display unit is merely accessing the info passed to it from the ipack
and there are a couple of park heating settings in there too
I may be wrong, but i am fairly sure that you cant fire up the FBH with a simple plus or minus power on a pin. They typically have a data BUS connection for control. I bus, CAN bus or W Bus, the latter being webasto's own and i know on the Disco 3 that's where the add on timer they use is connected to.