Sound- absorption or reflection

[Ralph L. Fullenwider]

Hi Kurt:

I am assuming that you have the Dometic side by side and it is a 2 way,
LP/AC. Of course when the gen set runs or your on shore power, the 120 VAC
heater is keeping your unit cool. With the gen off or no shore, you should
be running on LP, and that is not cooling if I read the post right. There
are several things to cause this: Bad board,, blown fuse,, rust flakes
laying on top of the burner,, thermistor bad,, bad lp valve,, high voltage
ignite/reignite module. To be honest, I should imagine the LP side may just
need a little PM done to it.

If the LP works when parked, the flu needs cleaning and there is a baffle
in side the boiler tube that needs to be cleaned and on top of the boiler
tube there should be an anti blow out plate installed and the gap should be
about 1/2 inch.

There is insulation located in the enclosed up exhaust pipe for the gen
set. That compartment it is in is completely enclosed as to shut out any
CO2, that may leak. I have never removed the exhaust pipe from there however.

Safe Travels,

Ralph Fullenwider
'84FC35 " Ruff Diamond"
Oklahoma


At 08:06 AM 2/22/2009 +0000, you wrote:
>I would say that careful inspections are the order of the day to keep
>your coach in top form and you safe.
>
>I'm not up to snuff on this post but in my case the new exhaust,
>exhaust blankets on the new Stainless pipes (18ga.) and a soon to be
>installed thermal and acoustic insulation in the engine compartment
>she'll be cool, quite and efficient The blankets and the SS pipes are
>rated at over 2000 degrees continuous duty. So the hottest parts are
>insulated and the hottest gasses are directed out and away from the
>motor. I did install 2 - 1650 cfm electric fans in the engine
>compartment, to take care of any other residual heating problems.
>I don't see how insulating any Bird compartment would be detrimental.
>I can't imagine any engineer using the coach in any calculation as a
>heat sink, to dissipate any heat from the engine or generator
>
>Isn't that what radiators and exhausts are for.?
>
>I'll redo the insulation in the genny compartment when I do the main
>engine area.
>
>Look at any Prevost conversion the generators are mostly in enclosed
>compartments, Birds , at least the PT series are completely open
>underneath. I would not worry about maximum insulation in the genny
>box. When driving you get air flow, when parked the blower is sucking
>air in from some where, some is air is flowing through the genny
>box , along with the manifold, exhaust and valve cover blankets it's
>already retaining/containing a lot of heat internally that can only
>be removed through the exhaust and radiator. If after insulating you
>see higher temps. Install a lower temp. thermostat.
>
>After my near miss at burning up my coach I'd like to ask the forum a
>question.
>
>Has anybody ever checked the condition of the Generator exhaust stack
>that goes up through the body? And how would we go about checking it?
>It has the potential to be a serious issue should it be leaking
>exhaust fumes into the coach.
>
>In my coach the Genny Stack is located next to the Fridge. How well
>insulated is it? Maybe that's why my Fridge works great when parked
>but doesn't when I'm driving. I almost always run the generator when
>driving, and yes it's running while parked if not at a place it can
>be plugged in to. So is it part of my Fridge cooling problem? Maybe,
>any thoughts?
>
>Kurt Horvath
>95 PT 42
>10AC
>