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Old 02-06-2007, 07:49 PM   #43
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From what's being reported by Pahaska and others it sounds like everything will work just right if the thermostat has been properly installed. I'll have to give it a try early this Spring when the weather conditions are favorable.
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Old 02-06-2007, 08:11 PM   #44
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As Safari Tim said, there is a PC board in the Duotherm units that contain a row of dip switches. These switches must be set to recognize other components in the HVAC line: a furnace, Aqua Hot hydronic heating system, another A/C unit (adds another zone or 2 to the t/stat) etc. Your furnace will not be recognized by the t/stat without the proper dip switch being set.
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Old 02-27-2007, 01:20 PM   #45
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I love our heatpump

We used it for the first time last week and it worked as advertised and it was good. I'm sure it helped save propane too. I only noticed one defrost cycle (probably in the upper 30s outside).
-KL
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Old 02-27-2007, 01:46 PM   #46
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We have the heat pump 13.5K and use the furnace to keep the pipes from freezing in the driveway and the heat pump when camping. We have used the heat pump to mid-30's and been comfortable. This was with the trailer pre-heated from furnace use before hitting the road. Starting with a cold trailer and using the heat pump might be different, I haven't had the experience to find out. At home we have natural gas furnace.
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Old 03-05-2007, 11:47 AM   #47
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FYI-

Anyone who is getting ready to install one of these heat pumps, the dip switch settings we were talking about are under the shroud of the roof unit.

The instructions tell you at the end, after its installed how to set them. Well, if you follow the instructions (like I did), you have to go back on the roof, remove the cover to access them.

Just a heads up to set the switches before you put the thing on the roof!

You also have to reset the Comfort Control Center after the dip switches are changed so it will read the new settings.
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Old 03-05-2007, 02:43 PM   #48
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no kidding tim...

when the factory service center removed and installed a new a/c on my unit,

they neglected to set the dip switches.

they also kept the installation manual.

so after a few calls/emails and head scratching,

they admitted perhaps i needed to crawl up there and do this part.

really the box or shroud should have a label "set the dips now"

cheers
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Old 03-05-2007, 04:21 PM   #49
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What are dip switches?
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Old 03-05-2007, 05:13 PM   #50
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DIP switches are just very small switches on the control board that you flip on or off depending on your options. You usually only would do this once when you get it installed.

Looks like this.



2air, you had to get up on the roof to check yours? Were they wrong?
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Old 03-05-2007, 06:13 PM   #51
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Quote:
Originally Posted by Safari Tim
2air, you had to get up on the roof to check yours? Were they wrong?
hi tim

yep they were wrong.

because i didn't have the manual, i had to try several combinations of flipping them.

each new combo added or removed something from the comfort control center.

eventually and after about 5 gyrations i got the right combo of dip flips.

of course a few days later, the installation manual arrived at my house.

cheers
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Old 03-05-2007, 07:01 PM   #52
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  1. HEAT STRIP
  2. ZONE 2
  3. ZONE 3
  4. ZONE 4
  5. FURNACE
  6. DIFFERENTIAL
  7. STAGE
  8. GEN START
You won't get any sympathy if you won't ask a question.
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Old 03-05-2007, 07:58 PM   #53
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Quote:
Originally Posted by markdoane
  1. HEAT STRIP
  2. ZONE 2
  3. ZONE 3
  4. ZONE 4
  5. FURNACE
  6. DIFFERENTIAL
  7. STAGE
  8. GEN START
You won't get any sympathy if you won't ask a question.
Good work, you guys!! Note that in general, the only dip switches that you set to 'on' are the heat strip, if you have one, and the furnace if it is tied into the Comfort Control Center thermostat. Otherwise, they are all usually off....OH, and if you have a second A/C in the unit, you need to activate the 'zone 2' dip also.................. The last 3: Differential, Stage and Gen Start are not used in most cases.
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Old 04-25-2007, 12:22 AM   #54
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Interesting information.

My Caravanner doesn't have AC or heat in it right now, and this has given me some ideas. I am looking for a rooftop AC unit (low profile prefered), but would also like to have a heating option. I never winter camp, and suppose I could just use a ceramic heater to warm the trailer interior in the early spring or mid to late fall. I do not have a grey tank to worry about, and will not fill my fresh tank unless I am boondocking (Never see that happening).

Would an AC/Heat pump combo be a good idea, or would I be better off getting an AC unit, and using two small ceramic heaters?

Eventually I may decide to run propane for a small catalytic heater, but that is off in the future.

Steve
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Old 04-25-2007, 08:30 AM   #55
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Soldiermedic, I would go with the A/C-heat pump combo if you don't plan on boon-docking. I don't think the heat pump is much more expensive to purchase than an A/C only unit. At least IIRC. We use ours whenever we need heat and are camping. It keeps our 30' plenty warm at night but we don't winter camp either. We figure why use the propane when we are paying for the campground's electricity; this saves our propane for cooking and hot water.

When we had the trailer moored in our yard during this past winter we used the propane furnace to keep the pipes and tanks from freezing but that doesn't sound like an issue for you. Just remember to winterize this fall.
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Old 04-25-2007, 08:59 AM   #56
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Soldiermedic---We have a ac heat pump in our 30 but use it differently than anyone I spoken with. We find the noise from the unit to be such it bothers us when trying to sleep. Were we find it useful is when temps are above freezing and we're out away from the trailer fo the day.---pieman
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