BCM Community

hi guys and gals

It looks like it is time to replace my old aqua hot system
(aqua hot ahe 100- 102s )
as there is a lot of rust coming out the hot water tap and I have had problems in the past with the unit .

I am looking at a oasis combi unit and would like to know it there are any problems with it ? from people that have one now

http://itrheat.com/products/rv-trailer-mobile-heating-system/oasis-combi/


thanks dave

I like it better the Pro/Heat burner is low pressure fuel and doesn't give the problems a Webasto does,made in Canada with great tech support,it doesn't have the stainless housing though if you are into stainless     

I have not used mine yet, will be using it this winter. It looks like a nice unit. It was easy to hook up. I got mine in stainless about 2 years ago.

Wayne

Quote from: luvrbus on September 18, 2018, 02:09:13 PM
I like it better the Pro/Heat burner is low pressure fuel and doesn't give the problems a Webasto does,made in Canada with great tech support,it doesn't have the stainless housing though if you are into stainless     

thanks

stainless is great ! but not needed inside the bay compartment

I was told the same thing from the rep near me about the combi and had a pro heat on the M C I and never had any problems with it in 10 years

I have 1 last thing to try on the old unit . There is a old 2 gal. expansion air tank right before the boiler cold water feed  that might be the source of the rust ?
I just got a new one to see if that will stop the rust . The other problem is the ignition coil only works sometimes ?  is there a cheaper place to find one other then aqua hot ?

https://heatmyrv.com/product/coil-ignition-12-vdc-webasto-dbw-2010-300-aqua-hot-rv-hydronic-heating-wpx-101-838/

or a similar replacement that will work

as a replacement unit the 2 choices I have are

oasis combi       $ 4999.00 and a lot of work !

or

pro heat x45      $ 2500.00 + $500.00   for a boat 120 volt / heat exchange water heater    plus a lot of work !

any ideas ?

thanks   dave

You might be on the right track re rust in the expansion tank...

Absolutely every one I have ever dealt with was a giant mass of rust inside, at the end of their useful lives.

Good luck, it would be nice to avoid the capital outlay for system replacement.

happy coaching!
buswarrior

call the local school bus operator and ask 'em where they are getting the ignition coils for their Webasto?

Like the burner nozzle, I wonder if there's a stock home heating alternative that is not price inflated?

happy coaching!
buswarrior

If it wasn't for carrying 2 types fuel I prefer the propane fired boiler systems,I loved my Primus quite ,no smoke and very little up keep

Call John at heat my RV he is a standup guy. I have seen the coils John has built and they are solid. That is where I bought my Oasis. He has forgotten more than most people know about heating you conversion with water.

Wayne

Quote from: rusty on September 19, 2018, 06:55:49 AM
Call John at heat my RV he is a standup guy. I have seen the coils John has built and they are solid. That is where I bought my Oasis. He has forgotten more than most people know about heating you conversion with water.

Wayne

LOL you live close to John for some of us getting him to do work on a unit is like getting a appointment at the Mayo Clinic he is good at what he does though,ps the tech that advertises on this board Lloyd DeGerald is sharp guy too and phone friendly   

so is this a dumb question ?

will something like this work ?

https://www.amazon.com/Emgo-Universal-Ignition-Coil-48-98618/dp/B00M9MZ278/ref=pd_sbs_263_8?_encoding=UTF8&pd_rd_i=B00M9MZ278&pd_rd_r=5fa994e0-bc1e-11e8-be59-db2f2d1fb2cc&pd_rd_w=3cADQ&pd_rd_wg=hQX2w&pf_rd_i=desktop-dp-sims&pf_rd_m=ATVPDKIKX0DER&pf_rd_p=53dead45-2b3d-4b73-bafb-fe26a7f14aac&pf_rd_r=VSA6M5J11KZQ71VQHW0W&pf_rd_s=desktop-dp-sims&pf_rd_t=40701&psc=1&refRID=VSA6M5J11KZQ71VQHW0W

not sure if both will spark at the same time ?

thanks   dave

propane hot water boiler ? yes that would be nice

I can get a Viesmann boiler at 98 % efficient rating with pvc exhaust pipe for a lot less then any rv stuff and you will not get the noise or smell

but TONS of work !

thanks   dave   

I have a Hurricane system in my bus,  they are made for boats.  I think they are related to the oasis. It runs great keeping the hot water hot, and the interior as warm as you want.

last night I removed the 2 gal air expansion tank and found that is the cause of the RUST !
replaced it with a new one and flushed the system with 75 gal. of clean water and now the hot tap water is clear .
so it looks like I can still use the aqua hot as my heat and hot water boiler . I do need to find a replacement ignition coil

thanks for all the replies and kind of sad that I am not getting the combi as it looks like a good replacement unit

but look at the fuel I can buy with all the money I saved

dave

From that link you posted it looks like you are in need of a coil with two leads is that correct? And from your comments I take it you need them to fire from both towers at the same time.

If this is so then you are in luck because just about any coil from an engine that uses the "wasted spark" type of ignition satisfies those requirements. Probably the coil in your link does too.

For them to fire independently there would need to be 3 low voltage leads. Ground, right, and left. If there are only two it will fire both at once. One tower is the HV+ and the other is the HV- terminal so typically they are wired to fire across the plugs to a common ground thereby completing the circuit.

Look for any engine that has exactly 1/2 as many coil packs as it has cylinders. Those coils should do the trick. V6 Buick comes to mind, as a compact, not ugly, and powerful coil.

Jim

A Harley Davidson coil has double spark outputs timed together, (wasted spark on the bike).  Cheap on eBay.

thanks guys

I will get a 2 wire coil and give it a try they are not that much money and if it works I can retrofit it in there and maybe even carry a spare

thanks again

dave   

Quote from: sledhead on September 20, 2018, 01:13:14 PM
thanks guys

I will get a 2 wire coil and give it a try they are not that much money and if it works I can retrofit it in there and maybe even carry a spare

thanks again

dave   

That is only a 8000v coil Wabasto uses through relays and a board, better price the control board before doing a lot of experimenting.A Pro/Heat uses the old style automotive coil $20 bucks at Napa lol and they never go bad   

ya

my heating guy said the same thing . he told me before I try anything I need to find the specs on the original coil . I looked last night but could not find anything other then the part #

any one know the specs on it ? 

8000 v 

what else am I looking for ?

thanks  dave

Pro-Heat in Grand Praire and Edmonton Alberta are Webasto parts people with way better pricing.
     Herb

Sorry thier name is Pro-West Grand Prairie phone number is 780 513 2511.
       Herb