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Old 09-09-2012, 08:44 AM   #1
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On my 13 Aspire, is the Aqua-hot system separate

from the thermostat in the bathroom?

If I was to heat the coach using ONLY the Aqua-hot system, should the thermostat be set "Auto" or furnace, or HP (heat pump)

And what does the little white "thermostat" in the bathroom, under the cabinet control, that says "Atwood hydroflame furnance?

Thanks
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Old 09-09-2012, 02:01 PM   #2
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Quote:
Originally Posted by Robert L View Post
from the thermostat in the bathroom?

If I was to heat the coach using ONLY the Aqua-hot system, should the thermostat be set "Auto" or furnace, or HP (heat pump)

And what does the little white "thermostat" in the bathroom, under the cabinet control, that says "Atwood hydroflame furnance?

Thanks
The furnace mode is using your Aqua-hot system. The HP (heat-pump) is the above A/C's, they are good until about 40deg., temps. any lower than this causes the heat pumps to be ineffective.

The white thermostat in the bathroom heats the lower water-holding tanks.

Best use of the Aqua-hot is turn on both the LP & Electric switch for max heat.
Zone 2 in furance mode with activate the floor heat.

30-40mins and your coach will be very toasty.
Aqua-hot will use about 1-2gals of fuel a day depending.

Hope this helps.
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Old 09-09-2012, 10:44 PM   #3
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Quote:
Originally Posted by rvbmw1 View Post
Best use of the Aqua-hot is turn on both the LP & Electric switch for max heat.
Zone 2 in furance mode with activate the floor heat.
Two questions...is there a way to deactivate the hot water heating if you are using the Aqua-Hot heat for maintenance only when in winter storage? And does Zone 2 control any other heating purpose other than the floors?
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Old 09-10-2012, 09:21 AM   #4
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Yes, it helps a lot. Thank you.

I know when we picked our coach up, they went over this. Our heads were spinning with all these NEW systems, comming from a travel trailer

Thanks again

Robert




Quote:
Originally Posted by rvbmw1 View Post
The furnace mode is using your Aqua-hot system. The HP (heat-pump) is the above A/C's, they are good until about 40deg., temps. any lower than this causes the heat pumps to be ineffective.

The white thermostat in the bathroom heats the lower water-holding tanks.

Best use of the Aqua-hot is turn on both the LP & Electric switch for max heat.
Zone 2 in furance mode with activate the floor heat.

30-40mins and your coach will be very toasty.
Aqua-hot will use about 1-2gals of fuel a day depending.

Hope this helps.
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Old 09-10-2012, 09:35 AM   #5
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We have some of the same questions. When would you use the lp burner in the Aqua-Hot system. We have just been using the electric option and keeps water hot enough. We realize in cold weather we will need the lp burner to heat the Aqua Hot system for heat. Did we just answer our own question? Anyone else getting by without having to use lp burner for hot water?
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Old 01-24-2013, 01:53 PM   #6
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Quote:
Originally Posted by rvbmw1 View Post
The furnace mode is using your Aqua-hot system. The HP (heat-pump) is the above A/C's, they are good until about 40deg., temps. any lower than this causes the heat pumps to be ineffective.

The white thermostat in the bathroom heats the lower water-holding tanks.

Best use of the Aqua-hot is turn on both the LP & Electric switch for max heat.
Zone 2 in furance mode with activate the floor heat.

30-40mins and your coach will be very toasty.
Aqua-hot will use about 1-2gals of fuel a day depending.

Hope this helps.
This is a confusing issue. Our coach is at the shop so we can't check to see if our 2013 Aspire zone 2 has a furnace setting. Our dealer (not where it is now) actually said that the little white thermostat was for a toilet seat heater (and he did so without smiling so we think he was serious) We are still trying to figure out how all this works never having had aquahot before. Our floors seem colder than we think they should be but not sure how to adjust them. We were running with both electric and propane aqua hot on zones 1 & 3 but had zone 2 set to HP as a backup. Perhaps the suggestion of zone 2 on furnace will help. Does the white box above the toilet and the white box in the lower bays do the same thing?? Or do you need to set the basement one separately?
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Old 01-24-2013, 02:37 PM   #7
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Hi Dianestew,
zone 2 has no furnance setting, To heat floors turn on the white thermostat in the bath(top lever) set temp ( bottom lever).It takes a couple of hours to warm the floors.
Basement white thermostat heats the basement,if not to cold the floor heat also warms up the basement.
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Old 01-24-2013, 02:50 PM   #8
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AquaHot systems can be confusing at first. The thing to keep in mind is that the LP or diesel burner as well as the electric heating element heat up the antifreeze in the boiler. As soon as the boiler is up to temperature the burner or electricity switch off. Once the boiler cools, the thermostat in the boiler causes the burner or heat element to kick in again. This will cycle on and off in order to keep the antifreeze hot. Therefore the burner is not directly tied into your upstairs thermostat. If you have the thermostat off and the burner switched it will cycle on and off indefinitely in order to keep the boiler antifreeze warm.

When your interior thermostat calls for heat it will switch on one or two circulation pumps and open some solenoid valves to circulate some of that hot antifreeze to your heat exchangers. As soon as the heat exchangers get the warm antifreeze the fans in them will switch on to blow warm air out to warm the coach. Meanwhile, you are transferring some heat from that antifreeze into the room so the boiler is beginning to cool down. Once the boiler reaches its low temperature threshhold the burner will restart to bring the boiler back up to temperature again. Should the need be too great for it to keep up the heat exchangers will stop in order to prevent blowing cold air. Once the boiler warms up enough, they will continue to recirculate once again. Once your interior thermostat determines that you've reached the desired temperature it will shut down the circulation pumps and heat exchanger fans. your boiler is probably not at the desired high temperature setting yet so it will probably run a few minutes until it gets there and will then stop. Note that the basement heat is on a different thermostat so even if you have your upstairs thermostat off, you can still heat the basement but you do need to run either the burner or electric element because the boiler still needs to be hot.

As to domestic water heating - that's pretty simple. The AquaHot is equipped with a flow switch and a coil inside the boiler. Fresh water passes through this loop and picks up heat from the boiler antifreeze surrounding it. When the flow switch senses that you have a hot water tap open it will temporarily interupt the heat exchangers so that 100% of the effort is devoted to domestic water heating. As soon as you are done running the water, the heat exchangers will kick back in again.

The hydronic heating and water heating systems are separate, although they both rely on the same boiler for heat. You can run one without the other. During winter storage you will most likely have the water system winterized. Note that AquaHot does not recommend blowing the system out because there are too many places for water to hide. They recommend using the pink RV antifreeze to prevent any freezups. While your RV is winterized there is no problem running the burner to provide interior heating. The now empty water heating coil won't be damaged. So you really do not have to (nor can you) disable the water heating system because it just won't do anything unless you fill the system up with water and start using it.
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Old 01-24-2013, 03:21 PM   #9
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The answers above describe the thermostats, I would just add a note to start your floor heat fairly warm - about 2/3 of the up the thermostat - and then turn it down until you are comfortable. You should be able to feel warm spots in your tile within the first hour but it will take a day to get it up to full heat if it's cold outside. Your toes will be nice and warm and the combined heat - furnace and floor - keeps the coach really warm. I was a little disappointed on how drafty it is near the windows but the heat works great. Give Entegra a call if your floor doesn't get warm - one of our lines had a kink in it but they fixed it and now it works great!
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