Lots of Webasto questions fomr a technical dimwit

[webcraft]

Lots of Webasto questions from a technical dimwit

.
I'm still not comfortable with installing the Webasto, though I have now got the transom exhaust fitting in place and a pipe run as far a the silencer (about 2ft from where the heater will be), all lagged and nicely mounted.

I am still confused however by the simplest of things. For instance, there is an arrow on the heater pointing away from the end with the fan in it.

What exactly is that arrow showing? If it is the direction of airflow I am very confused, as I thought the cabin air came out of the end with the fan on it.

Secondly, what are these bits?

They seem to be made to fit over the end of the heater outlet and inlet, yet if you do this the 60mm ducting does not fit over them! And another question - do I have to have a length of ducting on the intake side of the heater, or can I leave the end 'bare' if I am going to take air in from the locker it is mounted in?


Next, it says I should have an uncloseable outlet but the kit only seems to supply two closeable outlets:

Should I worry?

And finally (for this post) - a look at the bottom of the heater and a few questions:

Firstly, the rubber gasket . . . how does that stand up to the exhust temperature? The exhaust is pretty much touching it.

Secondly - also exhaust related - the 22mm-24mm adapter - does it fit slots upwards (i.e. heater side) or slots downwards (exhaust side) or does it not matter?

Thirdly - is it necessary to have a length of hose on the combustion air intake, and if I do how do I deal with the electrical cables coming out of the slot in the side of the stub?


(. . . . . . . . . . . . . that's it for now . . . and I haven't even touched the fuel or electrics . . . .)


- W

 

[David2452]

The second bit is a grille for truck installs where the exhaust side of the heater is outside the cab, it is not required and usually not included in a marine kit. the arrow shows the direction of the airflow. You should have one open (permanently) outlet (always included in a marine kit or even a motor home kit) so knock the flaps off of one to get that. The gasket is silicone so is fine with temps, it will only fit one way. The slots on the adaptor go upwards and put some exhaust assembly paste on it and the tube too. The air intake is needed as it has a silencer on the end, tuck the cable up the slot to the end and the slot in the air intake tube when installed over the tube. You have been at this for some time now and without being condescending, (honestly, I'm not) from the questions asked and especially the latest ones I really feel that for your own safety and of your crew you now need to have a pro look at it for you, and by a pro I don't mean some bloke down the pontoon "who knows about these things". At the very least have a Webasto agent inspect and commission it for you when you have it finished,

"a length of ducting on the intake side of the heater, or can I leave the end 'bare' if I am going to take air in from the locker it is mounted in?"
Never, never, ever take the recirculated air from the space the exhaust of the heater is situated in, that needs no explanation at all (or shouldn't)

 

[FWB]

The fan sucks cold air into the unit. The housing around the fan is a tight fit and somtimes rubs on the fan, just twist a little to stop the rubbing.
When wiring it up ensure that you use the fuse as the only means of removing the power, do not wire it to a switch. When you turn the controller off the unit goes through a cool down cycle and then shuts down. Wire to the main battery bus bar via the supplied fuse or directly to the battery via the fuse. Do not turn off the battery until the Webasto has shut itself down.

 

[David2452]

Do not turn off the battery until the Webasto has shut itself down.

The cabling should be fitted so turning off the battery isolator has no effect, i.e. from the permenat live side.

 

[webcraft]

The cabling should be fitted so turning off the battery isolator has no effect, i.e. from the permenat live side.

Understood.

- W

 

[webcraft]

.
David,

Many thanks. I've PM-ed you.

- W

 

[David2452]

.
David,

Many thanks. I've PM-ed you.

- W

Can't reply Nick as your PM box is full (well, according to this new system it is)

 

[webcraft]

Can't reply Nick as your PM box is full (well, according to this new system it is)

Sorry.

I've been in with the Augean shovel - should be plenty of space now.

- Nick

 

[johnalison]

The non-closeable outlet has something of a grill on it and looks much neater than a closeable one with the flap removed. I would chase them up for one if it is missing.

 

[webcraft]

The non-closeable outlet has something of a grill on it and looks much neater than a closeable one with the flap removed. I would chase them up for one if it is missing.

Will do. Thanks.

- W