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Old 10-18-2014, 10:41 PM   #393
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Was this temperature differential also an issue with the non-ducted two AC units? If so, what was done to resolve?
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Old 10-19-2014, 03:02 AM   #394
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In their infinite wisdom, Airstream often mounts the thermostat on the refrigerator cabinet wall.

But it is mounted after they have drilled a hole through that wall for the wires to come through. They do NOT seal that hole, so the ambient air temperature hitting the back side of the thermostat and wafting into the sensor reflects the heat of the propane flame cooling the refrigerator or the cold of the space when using the electricity for that function. That space is vented directly to the outside with one or two louvers for air movement.

We put the thermostat on a new mounting board for some insulation from the refrigerator wall (see avatar) and sealed the wire hole with some insulation stuffed in the hole covered with aluminum tape in the refrigerator space.

This brought the interior reading at that location more in line with the bedroom sensor.
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Old 10-19-2014, 06:20 AM   #395
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Switz,
That makes sense, I will give it a try! You wonder why someone at Airstream does not think of this. Thanks! Mark
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Old 10-19-2014, 07:29 AM   #396
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Both of my sensors are mounted close to the LCD TV's and the heat from the TV effects the sensor- makes the trailer cooler in the summer and colder in the winter-
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Old 10-19-2014, 07:44 AM   #397
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Can't you just adjust the thermostat to compensate for the placement of the senders? Jim
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Old 10-19-2014, 11:30 AM   #398
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Quote:
Originally Posted by zigzagguzzi View Post
Can't you just adjust the thermostat to compensate for the placement of the senders? Jim

With the temp sensor mounted on a warm wall, it causes the a/c to cycle much more often to compensate. It takes less than a minute to warm the sensor back up where it trips on the compressor. I will either move it or insulate it from the wall.

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Old 10-20-2014, 11:15 AM   #399
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Both of my sensors are mounted close to the LCD TV's and the heat from the TV effects the sensor- makes the trailer cooler in the summer and colder in the winter-
Sure makes sense - even with only one thermostat ...as that is just where it is mounted for us, too!
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Old 10-20-2014, 12:06 PM   #400
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My thermostat in my 2008 Classic FB is on the shower wall in the bedroom which causes the bedroom to be cooler/warmer than the rear living area.

Does the ducted air cool the bathroom well? I hate going into a hot bathroom during the summer months. We can't really leave the bathroom door open as it restricts movement in the hall way. At least there is a furnace duct in there for cooler weather.

I was talking to a 5th wheel owner this weekend and mentioned Airstream finally started putting ducted air in the 2015 and he kinda snickered asking why it took them so long. I've never owned an RV with ducted air so I guess I don't miss it. He did mention however, that the bedroom area in his 5th wheel didn't cool down as well as the rear living area. The ducts in the living area are pretty high up in a 5th wheel so they would be hard to close off without a stool.

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Old 10-20-2014, 07:37 PM   #401
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For sure, Airstream was very late to the ducted air party. All of the other RV manufacturers have been doing it for years.

But then, they always had more than a 2" roof thickness to work with!


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Old 10-20-2014, 09:40 PM   #402
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Took care of the heat form the TV rising up into the thermostat today. Relocated the thermostat near the light switch. 28"LCD above the S/W and thermostat.
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Old 10-20-2014, 10:47 PM   #403
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As to the bathroom query...on my 30 RB Serenity there are two outlets in the bathroom...nice and cool in the summer, warm in winter.


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Old 10-20-2014, 11:26 PM   #404
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Originally Posted by KJRitchie View Post

Does the ducted air cool the bathroom well? I hate going into a hot bathroom during the summer months. We can't really leave the bathroom door open as it restricts movement in the hall way. At least there is a furnace duct in there for cooler weather.


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Old 10-21-2014, 09:20 AM   #405
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Back in the day, there was an adjustable compensator in the circuitry of better quality thermostats one would adjust to the setting recommended by the furnace/air conditioner manufacturer.

However, the Dometic and Atwood equipment is not built to those standards.
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Old 10-27-2014, 07:55 AM   #406
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Yep. It was called an ' anticipator' and allowed you to set the number of degrees before the t/stat would kick back on or shut down, depending on the temp. settings.

The new electronic units from all if the RV HVAC manufacturers are pre set to around two degrees and can't be adjusted.


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