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Old 11-27-2008, 09:44 AM   #29
CLOUDSPLITTER "Tahawas"
 
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Quote:
Originally Posted by Westfalia View Post
I'll likely wrap the furnace in a combination of glass and bubble wrap to muffle the blower sound
IMHO....I would be VERY leery of wrapping the furnace unit with anything.
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Old 11-27-2008, 02:18 PM   #30
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Quote:
Originally Posted by ROBERT CROSS View Post
IMHO....I would be VERY leery of wrapping the furnace unit with anything.
Hi, can you spell F-I-R-E. I'm with Robert on this.
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Old 11-27-2008, 03:01 PM   #31
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'Westfalia, don't do it. The bubble wrap would likely melt into a gooey glob if it didn't catch fire.

Doesn't some of the noise come from the air passing over the flexible tubing with all the ribs in it? It also slows down the air. A smooth tube is more efficient and quieter unless you want to have it go around things in a tight space, like, say, an RV. The only places I've seen the duct it was the flexible, ribbed type; maybe in other places it's not.

There isn't that much temp differential in our Safari and maybe it depends on the floor plan and how they run the ducts. We like a cool, even cold, bedroom, so I'd like more difference between the bedroom and the kitchen/dinette. You just can't please anyone. And the register in the bathroom blows cool air and I'm guessing it goes through the water tank area to heat them and there's just not much BTU left when it gets to the bathroom (why I am I calling it a bathroom?—it doesn't have a bathtub or even a shower).

I agree with Safari 28 the heater/AC system is pretty primitive. The insulation is too and the metal structure transmits cold or hot air from outside to inside very effectively, there are no thermal breaks. If I were going to do it again, I wouldn't get the panoramic windows in the front because we don't look through them much and they transmit whatever we don't want inside. All the windows are single pane. The curtains are thin. The blinds have nearly zero insulating use. Someday we have to look into cellular shades for the windows—they will help. Lining the curtains seems like a way to make them hard to open and close. Maybe Barb can figure that out; I can barely sew a button onto a shirt (I'm good with a vacuum though).

Gene
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Old 11-27-2008, 04:50 PM   #32
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Hi,
I've also noticed that the air from the heater in the toilet area is just about warm this is on the 27'FB. Any suggestions on how to make it warmer in this little humble room?
Thanks, Louis (2008 27'FB)
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Old 11-28-2008, 06:10 AM   #33
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Quote:
Originally Posted by bizetwo View Post
Hi,
I've also noticed that the air from the heater in the toilet area is just about warm this is on the 27'FB. Any suggestions on how to make it warmer in this little humble room?
Thanks, Louis (2008 27'FB)

Haven't used the furnace in really cold weather, 28F while leaf peep'n in the Dacks, but this worked for us.

Took some furnace filter material and taped it over the front outlets. Ended up putting two layers over one and a single layer over the other. For those of you who don't like the noise, it had the unintended benefit of quieting things down a bit and possibly sending more warm air to the tanks. Haven't made up my mind whether I will install it behind the grills.

I kind'a look at the noise the furnace makes as a diagnostic tool.
Whoosh..blower on.
Bloop..burner lights
Wheeze..burner off
Phew..Blower off.

Bloop with no Whoosh or Wheeze before Phew and I gotta problem.
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Old 11-28-2008, 07:10 AM   #34
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The digital thermostats I checked out at the BBS's all seem to be 24V. Is this what an AS uses too? Or, is it 12V? If the latter, is there a specific 12v digital model just for the furnace?

Tom
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Old 11-28-2008, 09:41 AM   #35
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My thermostat is a Duo-Therm Comfort Control Part # 3109228.001. It's made by Dometic.

It is digital, controls fan on/off, fan speed, A/C, furnace, heat pump. If you have zone heating it'll do that too. If you run the heat pump, it'll shut it off around 30˚ and turn on the furnace. You can set it to 40˚ (lowest temp.) and it'll keep things from freezing when you aren't using the trailer. It'll also defrost the heat pump when the temp is less than 42˚. It also washes the dishes and checks your blood pressure (don't believe that). I assume it's 12 v. since I don't see any mention of a step up transformer.

All these functions don't help if you don't have the right wires to whatever thermostat you have had.

Some digital house thermostats are 24 v. and have a step down transformer at the furnace to power them, or may have batteries in the unit. A friend installed one with batteries, went away, the batteries failed in a day or so, once he returned his pretty copper plumbing had about a dozen breaks. The only good thing was they all failed in a crawl space and it didn't have a flood in the living space.

Gene
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Old 11-28-2008, 11:31 AM   #36
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I put the Hunter 42999 digital thermostat in today. Very simple install. The manual claims 2 AA batteries will power it for at least a year. Has low battery warning light. Guessed it was the blue wire that was the power feed and the thing works just fine.

Our bed sits over the storage space as well. I've often wondered about placing a ceramic heater in that area. Letting the heat rise up from underneath on those cold nights.

Tom
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Old 11-28-2008, 03:38 PM   #37
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Our bed sits over the storage space as well. I've often wondered about placing a ceramic heater in that area. Letting the heat rise up from underneath on those cold nights.

Tom
What about an electric heating pad for the matress?
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Old 11-28-2008, 04:11 PM   #38
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What about an electric heating pad for the matress?

Good idea.
But I'm also thinking about my cold nose.

Tom
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Old 11-28-2008, 05:40 PM   #39
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Quote:
Originally Posted by bizetwo View Post
Hi,
I've also noticed that the air from the heater in the toilet area is just about warm this is on the 27'FB. Any suggestions on how to make it warmer in this little humble room?
Thanks, Louis (2008 27'FB)
bizetwo.... We have the same problem with our 25' FB. The air temperature coming out of the bath vent is 62F, dining area 175F, galley 133F and bedroom 124F. Airstream used 4" diameter ducts for all three of the main ducts and 2" diameter for the bathroom vent. All the ducts are above the floor of the trailer except for the bathroom duct, which runs under the floor of the trailer by the water tanks to the bathroom vent. I think that this is the main reason the bathroom air is cool. My dealer recomended that I install new adjustable vents (instead of pie plates) in the main vents to allow us to cut down their flow and divert it to the bathroom. It helped a little but the degree we were hoping. The best way to solve the problem is to leave the bathroom door open during cold weather so it gets its heat from the surrounding area.
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Old 11-28-2008, 11:07 PM   #40
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Hi, I don't know what Airstream did to the furnace in the reverse floor plans, [front bedroom] but our rear queen gets even air pressure and even heat out of all three vents. We have one vent on the curb side, behind the oven, by the entrance door. We have a second vent on the curb side, at the closet wall, that is aimed at the foot of the bed area. And the third vent is on the street side, under the toilet stand. My furnace is located under my oven [pictured on bottom left] and the vent is near the floor and close to the door. [not shown in picture] The bathroom vent in the top left picture is self explanitory. The picture on the top right is where the vent is in the master bedroom. Where are your furnace vents located on the front bedroom models? [pictures?]
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Old 11-28-2008, 11:39 PM   #41
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Quote:
Originally Posted by ROBERT CROSS View Post



I kind'a look at the noise the furnace makes as a diagnostic tool.
Whoosh..blower on.
Bloop..burner lights
Wheeze..burner off
Phew..Blower off.

Bloop with no Whoosh or Wheeze before Phew and I gotta problem.
If I made a recording of the AS furnace sounds, it would not have been as accurate as this description. When I heard bloop, I was suddenly warmer.
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Old 11-29-2008, 06:29 AM   #42
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Quote:
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...The best way to solve the problem is to leave the bathroom door open during cold weather so it gets its heat from the surrounding area.
We have a 2007 27FB and this is what we do. Keeps the tush from freezing to the seat during the middle of the night! LOL!

Seriously, we've been through several 15-30 degree nights so far this year and opening the door helped tremendously...

/Lois
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