Hydro Hot

[jcussen]

Originally Posted by 96 Wideglide

I only have the one electric element, and have no problems having 'Navy' showers !!

How bout when outside temps in the 30's and aqua-hot has to keep coach at 72?

[96 Wideglide]

Coach heat will turn off when there is a demand for hot water .

[saddlesore]

Originally Posted by jcussen

How bout when outside temps in the 30's and aqua-hot has to keep coach at 72?

With ours, was not an issue,taking a hot shower while the A/H was running(providing coach heat) Altho I did have to turn the hot water knob in the shower a little farther to the hot) than normal..(12 deg outside/72 inside) shore power outage so was running on the genset..

[saddlesore]

Originally Posted by 96 Wideglide

Coach heat will turn off when there is a demand for hot water .

Is that how your coach is rigged up??

[jcussen]

Originally Posted by 96 Wideglide

Coach heat will turn off when there is a demand for hot water .

Not sure I like that part. Will probably run the diesel burner as well.

[96 Wideglide]

In the 30's, Id have the diesel burner running regardless whether I wanted to shower or not. No way my single electric element would keep up in those temps.
You, having the larger AH, with dual electric elements, would have to experement with it.

[96 Wideglide]

Originally Posted by saddlesore

Is that how your coach is rigged up??

Yes. Believe all Aqua Hot systems are.

[jcussen]

Originally Posted by 96 Wideglide

In the 30's, Id have the diesel burner running regardles whether I wanted to shower or not. No way my single electric element would keep up in those temps.
You, having the larger AH, with dual electric elements, would have to experement with it.

Thanks, guess will have to find out, but 3000 watt electric will not equal 50000 btu diesel heat. Guess will be running the diesel side.

[96 Wideglide]

No, it won't, but it's better than 1650 watts !

[96 Wideglide]

See, the 600 series AH/ Hydra hot, which I assume you have, since you have dual electric elements, also has a much larger boiler fluid tank. The cooled fluid returning to the tank after running thru the heat exchangers, doesn't cool the tank as much as it does the 450 series AH. Same goes for the fresh water running thu the fresh water coil.

[Dutch Star Don]

I think the OP is asking if he can run his two electric elements on 30 amps. The answer is yes, but just about everything else would have to be off. It really wouldn't be practical.....one element would be more realistic. I don't understand why many think you have to run either the electric OR diesel burner. They can both be run....If my site has electric I turn on the electric elements.

There is a lot to consider when running the hydronic heat. If it's summer and warm out, one electric element will probably be plenty for showers, especially if the ground water is warm. As the weather cools, two electric elements may be enough.

Now here is where you need to understand your system. If you're running the heat on one or two electric elements, it may not provide enough hot water for a shower, while running the coolant through the registers for space heat.

Now if it's really cold out and you have 50 amps, turn on both elements and the burner. When the elements aren't enough, the burner will kick in and support the two elements. This is no different than when people ran there propane water heaters on electric and propane at the same time. The electric kept the water hot until demand was exceeded and the propane kicked in.

[96 Wideglide]

You don't have a modern day ( 06 +) Aqua hot , Don!

Electric element and diesel burner use the same set of thermostats for cut in/ cut off.
Once your boiler fluid is up to temperature, it's basically a waste of power leaving the elec turned on, if your running the diesel boiler.

[CountryB]

I have an older Aqua Hot, which has a single 1650W element. I can run that on 30A power while running some other 120V stuff (like TV). But if Turn on AC unit at same time it will trip the breaker at pedestal.

The single heating element does a good job of heating the water but it takes a while to get hot when first turned on (once hot, there is enough hot water for two showers. Probably more - that I have not tested that).

[Busskipper]

Originally Posted by Decisions

Can I run both my Hydro Hot furnaces on 30 amps. 2005 Tiffin Allegro Bus

https://library.rvusa.com/brochure/05_AllegroBus.pdf

Likely - per the spec's of the 2005 - if you have two furnaces they are Propane.

If you do have a HH then it will run fine on 30 Amps - but you will only have one in the Coach.

Welcome to the Forum,