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Pelican



Joined: 13 Aug 2021
Posts: 20
City/Region: Port Townsend
State or Province: WA
PostPosted: Sat Jan 22, 2022 9:54 pm    Post subject: Wallas stove fuel Reply with quote

I bet this has been discussed before but either I didn’t see it or don’t remember seeing it. So here it is: my new to me C-Dory came with about a gallon reservoir under tje sink. I think it’s kerosene because of its color and smell. It’s now less than half-full and I’m wondering what fuel I should refill with - diesel or kero. Any thoughts? I’d empty out what’s there and start new with any new fuel.
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Salmon Fisher



Joined: 07 Aug 2009
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Vessel Name: Kim Christine
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PostPosted: Sat Jan 22, 2022 10:02 pm    Post subject: Reply with quote

Your best bet is to call Scan Marine in Seattle and ask.
Give them the model number of your Wallas and they will happily tell you.
You're correct to safely dispose of the remaining fuel in the jug and put in fresh.
Your Wallas will thank you Smile

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Patrick and Kim Walker

2004 25 Cruiser-Present

2000 22 Cruiser 2009-2014 (Sold)
2006 25 Cruiser 2014-2019 (Sold)
1985 22 Classic -2019 (Sold)
1991 19 Arima Sea Ranger-2019-2021 (Sold)
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1987 22 Cruiser -2021-2023 (Sold)

Honey, this REALLY will be my last boat, honest!
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C-Wolfe



Joined: 16 Sep 2020
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PostPosted: Sat Jan 22, 2022 10:59 pm    Post subject: Reply with quote

I second the previous post in calling scan marine. They have the best customer service and last I talk to them they explain that different model year where designed to use different fuel for peak performance.
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kennharriet



Joined: 22 Jan 2009
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City/Region: Grangeville
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PostPosted: Sat Jan 22, 2022 11:17 pm    Post subject: Reply with quote

I installed the Wallas 1300 last year. I have been using Jet A fuel after talking with Scan Marine. I get it at the pump at the local airport and it is half the cost of kerosine.
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NORO LIM



Joined: 24 Apr 2008
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City/Region: Olympia
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C-Dory Year: 2006
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PostPosted: Sat Jan 22, 2022 11:49 pm    Post subject: Reply with quote

You have to know what model you have before you can know what fuel to use. Call Scan Marine.
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Pelican



Joined: 13 Aug 2021
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City/Region: Port Townsend
State or Province: WA
PostPosted: Sun Jan 23, 2022 12:22 am    Post subject: Reply with quote

Thanks, everyone. I’ll call Scan Marine with the model #. It’s working like a charm now, but the starboard engine has to running for it to start up. I’m guessing the alternator gives the electrical system an extra boost to get it started. I’ve heard there’s a real problem if I let the reservoir run dry.
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Salmon Fisher



Joined: 07 Aug 2009
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Vessel Name: Kim Christine
Photos: Kim Christine
PostPosted: Sun Jan 23, 2022 9:42 am    Post subject: Reply with quote

Yes, it is very important that the Wallas get enough electricity to fire up like it should.

You may want to look at your electrical system to make sure that either engine is wired so that your stove gets adequate juice to start. Do you have an (ACR) Automatic Charging Relay? This is very helpful if you have a Start battery.
What is your battery configuration? Do you have one Start battery and one House? Or do you have two deep cycle batteries? This what I run on my current 22 and it is fine. As an example, on our 2000 22 Cruiser with twin 40s, each had its own single pole Blue Seas On/Off switch wired to its own Group 24 battery. I modifed it to a Blue Seas Battery 1/2/1+2/Off so that both motors were charging one battery. I would start the trip on Battery 1. When I shut down motors at dock or mid trip, I would switch over to Battery 2 so it would get a charge. If I had installed an ACR, maybe I wouldn't have had to go through that sequence.
As discussed on this forum, you never want to select "1+2" because your outboard(s) do not have the capacity to charge both batteries.

Sounds like you're on the way to having a dependable Wallas.
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ssobol



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PostPosted: Sun Jan 23, 2022 11:32 am    Post subject: Reply with quote

Salmon Fisher wrote:
... As discussed on this forum, you never want to select "1+2" because your outboard(s) do not have the capacity to charge both batteries. ...


I suppose it depends on the engine(s), but I charge both my batteries (switch on Both) regularly with my single BF90D.
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kaelc



Joined: 19 Jul 2017
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PostPosted: Sun Jan 23, 2022 11:55 am    Post subject: Reply with quote

Start it with the lid up as well, the extra juice for the fan makes it hard to start on the older ones.

https://www.scanmarineusa.com/wp-content/uploads/Fuel-comments-December-20121.pdf
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robhwa



Joined: 04 Dec 2013
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PostPosted: Sun Jan 23, 2022 12:13 pm    Post subject: Reply with quote

ssobol wrote:
Salmon Fisher wrote:
... As discussed on this forum, you never want to select "1+2" because your outboard(s) do not have the capacity to charge both batteries. ...


I suppose it depends on the engine(s), but I charge both my batteries (switch on Both) regularly with my single BF90D.


Mostly it depends on the batteries. If you are running your engine so the alternator is charging, it is usually fine to have both batteries connected together (A + B), as long as you are generating more amps than you are using. This can be a problem with the older Honda BF90s, which only put out about 17 amps. When one becomes fully charged, charging will shift to the other. With both fully charged, no amps will flow. The problem comes with connecting mis-matched batteries where there is no net charging. Directly connected (i.e. A+B switch only) batteries will try and equalize charges, always with a heat loss (laws of thermodynamics). Ultimately, those heat losses can drain your system. As mentioned above, there are various automatic methods for accomplishing the disconnect, an ACR, or better yet, a DC-DC system. These take the requirement of the operator moving the switch away. The DC-DC system will prioritize charging the starting battery, and then the house. When the engine is not running, the systems are isolated. There are some hybrid systems, like the Renogy DC-DC+MPPT, that have a computer that analyzes voltages and battery types, and can also charge the starting battery with solar panels. I completely agree about the need for adequate voltage for the Wallas. I have had this problem with the Wallas stoves in my C-Dory, camper, and yurt. So far, running the Wallas with LiFePO4 batteries hasn't yielded a problem as they keep voltage higher longer in the duty cycle.
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hardee



Joined: 30 Oct 2006
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PostPosted: Sun Jan 23, 2022 12:41 pm    Post subject: Reply with quote

Pelican,

Scan Marine is very helpful and they have a good website.
https://scanmarineusa.com

This is a post they have on fuels.
https://scanmarineusa.com/wp-content/uploads/2020/05/Fuel-comments-May-2020.pdf

I have been using Kleen Heat* for my Wallas. That and a specific protocol for starting and stopping has kept mine working every time I want it. So . . .
1. Burn Kleen Heet always, and never let the tank run below 1/4 full.
2. Always start it with the OB's running, and start it on HIGH and leave it there 15 minutes, at least.
3. Always run it on HIGH for the last 15 minutes before pushing the OFF button.

*Kleen Heet (Not sure of that spelling) may not be recommended by Scan on their website. I would ask them specifically about it for your specific stove. (I did).

If you don't know how old that fuel is, I would dump if an refill with fresh. (Henry's is a good source for the Kleen Heet.

See you on the water,

Harvey
SleepyC Moon


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thataway



Joined: 02 Nov 2003
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PostPosted: Sun Jan 23, 2022 12:54 pm    Post subject: Reply with quote

Quote:
As mentioned above, there are various automatic methods for accomplishing the disconnect, an ACR, or better yet, a DC-DC system.


Granted a DC -DC system is a necessity with LiFePO4 batteries (which has a resting voltage at 13.5 volts rather than 12.7 Volts of a FLA battery). An ACR will serve most C Dorys as well as a DC - DC system. If using Flooded Lead Acid (FLA) or AGM batteries, there is no reason for a DC to DC charger. All of the batteries. will have a similar charging profile. It is best to have all FLA batteries of Same type, same size, and same age. The Li battery has a different charging profile, which necessitates a DC to DC charger.

IF a LiFePO4 battery is at 12.8 volts it is 80% discharged.

Maybe we are just lucky, but with over 16 years and 4 different boats where we had the Wallas stove, we never had to run the outboard to start the Wallas. The stove should be connected directly to the battery, and adequate size wire should be used,

I am going to disagree with this statement also:

Quote:
When one becomes fully charged, charging will shift to the other


When you have two batteries connected in parallel, and one has the charging leads directly to it, both batteries will be charging. Even with an ACR, the engine start battery will not be fully charged when the second battery begins to charge. The ACR will combine the batteries at about 13.6 volts. Most outboards charge in the 14 plus volts.

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Thataway
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hardee



Joined: 30 Oct 2006
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PostPosted: Sun Jan 23, 2022 1:39 pm    Post subject: Reply with quote

Quote:
"Maybe we are just lucky, but with over 16 years and 4 different boats where we had the Wallas stove, we never had to run the outboard to start the Wallas. The stove should be connected directly to the battery, and adequate size wire should be used,"


I don't know that it has to be running, I do that as a precaution to save the battery, since I only have a DC volt level from my batteries, and it was suggested by one of the folks a Scan when I talked to them way back when I first started with the boat.

My Wallas is connected directly to the battery, and fused.

Harvey
SleepyC Moon

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C-Wolfe



Joined: 16 Sep 2020
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PostPosted: Sun Jan 23, 2022 2:21 pm    Post subject: Reply with quote

Make sure to confirm you do not have any corrosion in your wiring to the Wallas, they seem to be very sensitive to this. On the plus side, they have simple wiring and are easy to replace.

Quote:
Salmon Fisher wrote:
... As discussed on this forum, you never want to select "1+2" because your outboard(s) do not have the capacity to charge both batteries. ...


I suppose it depends on the engine(s), but I charge both my batteries (switch on Both) regularly with my single BF90D.


That is more of an issue for twin engines when both are charging the same battery (or a battery bank in parallel is the same). The charger regulator will mess with each other and they will cycle at a fast pace and shorten their lifespan.
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TyBoo



Joined: 23 Oct 2003
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PostPosted: Sun Jan 23, 2022 7:53 pm    Post subject: Reply with quote

When I had my Wallas 95D I asked Scan Marine about which fuel to use since at the time there were a lot of folks on here touting the Klean Heat stuff. The guy simply said that the D stood for diesel and that what it should be burning. I used diesel exclusively after that and it ran fine until the circuit board fried and the stove was replaced with an Espar.

The Klean Heat works well for people who use it and I am not saying there is anything wrong with using it. But I seem to recall it cost a whole lot more than the diesel and I would go broke keeping Lois warm for crabbing.

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