Dickinson solid fuel stove or propane

[Chotu]

Originally Posted by rbk

Problem with these is they do nothing to reduce the humidity inside the boat and actually help increase relative humidity inside. Drawing combustion air from the cabin and exhausting out the flue greatly reduces the humidity inside the cabin. As long as makeup air is maintained there is little chance of asphyxiation.

Problem with these is you failed to read my post, click the link OR understand the Dickinson Newport propane heater.

You couldn’t be more wrong. Please at least try to catch a glimpse of the thing you’re talking about before making a post like this.

[Chotu]

Originally Posted by boatpoker

And thats why they do not meet ABYC Standards. If your next insurance survey, surveyor is smart enough to catch it you will be denied insurance.

You, I’m disappointed in. You should know better than this.

I look to you as an expert. How can you get something this simple so wrong?

[boatpoker]

https://danboater.org/travel-health-...-act-fast.html

[Chotu]

Originally Posted by boatpoker

https://danboater.org/travel-health-...-act-fast.html

My goodness. Instead of checking to see why you are dead wrong, instead, you post an incorrect link about this heater? Lol? What are you doing? Did you not have your coffee yet? You’re typically a lot better than this.

Before continuing to dig your hole, please google the term “direct vent”

Your lack of understanding of heaters really surprises me. I’m kind of shocked actually.

[boatpoker]

Originally Posted by Chotu

My goodness. Instead of checking to see why you are dead wrong, instead, you post an incorrect link about this heater? Lol? What are you doing? Did you not have your coffee yet? You’re typically a lot better than this.

Before continuing to dig your hole, please google the term “direct vent”

Your lack of understanding of heaters really surprises me. I’m kind of shocked actually.

My target was/is non-room sealed combustion heaters.

[Chotu]

Originally Posted by boatpoker

My target was/is non-room sealed combustion heaters.

OK. Maybe we have a misunderstanding. Since you quoted the post that RBK made against the Dickinson Newport propane heater, and backed his incorrect argument up with more facts about different types of heaters then we were talking about, it looked like you were trying to say all of that about the Dickinson Newport propane heater.

If not, my faith is restored. Lol

[rbk]

Originally Posted by Chotu

Problem with these is you failed to read my post, click the link OR understand the Dickinson Newport propane heater.

You couldn’t be more wrong. Please at least try to catch a glimpse of the thing you’re talking about before making a post like this.

No I'm not. With a direct vent heater the combustion air is drawn form the outside and expelled to the outside and radiant heat is given off from the heater. There is no air exchange within the cabin and humidity from breathing, cooking etc accumulates assuming there is little to no air exchange within the cabin.

When combustion air is drawn from the cabin, new cold air is drawn in through openings (dorades, portlights, companion way air leakage) this cold air (whether damp or not ) is heated, expands and the relative humidity drops. For instance, if you take 0'c air @ 100% RH and warm that air to 20'c without removing or introducing new moisture the RH drops to 40%, a much more comfortable living space.

Understand psychometrics before you make another incorrect statement. I'm not arguing whether the Newport is direct vent or not, just that a direct vent heater will not contribute to the drying of the interior of a boat. This is why in cold climate construction with direct vent and/or unvented heaters and sealed building envelope, HRV's must be installed to deal with humidity within the building envelope.

[rbk]

Reading back there is also confusion as to the difference between 'sealed / direct vent' , 'vented' and 'unvented' combustion appliances.

A sealed / direct vent appliance is a closed system where all combustion air and gasses are outside the cabin, no worry about Co or O2 depletion.

A vented combustion appliance draws combustion from the interior and expels it to the exterior. With vented combustion there is no issue with carbon monoxide as all combustion gasses are expelled out the flue. Only concern would be oxygen depletion within the cabin; that said the makeup combustion air required is the same area of the exhaust flue, so unless your cabin is absolutely air tight there is little to no chance of O2 depletion, one average dorade, air leakage around companion way hatch etc is more than enough volume to make up for combustion air.

The last option is unvented where the combustion air is drawn form inside the cabin and exhausted inside the cabin such as a propane catalytic heater. While these are not recommended to be run inside they regularly are and you will have a hard time getting a CO detector to trip directly in their exhaust plume. Now lots will say that's a great way to kill yourself on your boat, but almost all boaters have been using two and three burner propane stoves inside the cabin for many years without dying of Co poisoning or O2 depletion A typical three burner stove with oven can produce over 2 times the BTU's of most dedicated heaters so if you're concerned about a very efficient clean burning catalytic heater or a vented heater, then defiantly do not turn on more than one of your stove burners at a time.

[cal40john]

Originally Posted by rbk

A vented combustion appliance draws combustion from the interior and expels it to the exterior. With vented combustion there is no issue with carbon monoxide as all combustion gasses are expelled out the flue. Only concern would be oxygen depletion within the cabin; that said the makeup combustion air required is the same area of the exhaust flue, so unless your cabin is absolutely air tight there is little to no chance of O2 depletion, one average dorade, air leakage around companion way hatch etc is more than enough volume to make up for combustion air.

I thought one of the problems promoted with vented combustion is that you are drawing in air that could be mixed with exhaust gas.

Of course the rule about not using cabin air for combustion only applies to forced air heaters, not to drip pots like the Newport diesel heater.

It seems there are more rules for forced air than drip pots.

[nwdiver]

Originally Posted by Chotu

OK. Maybe we have a misunderstanding. Since you quoted the post that RBK made against the Dickinson Newport propane heater, and backed his incorrect argument up with more facts about different types of heaters then we were talking about, it looked like you were trying to say all of that about the Dickinson Newport propane heater.

If not, my faith is restored. Lol

Yeh, I was wondering WTF, also…….now I get it.

[nwdiver]

OK, air is 21% oxygen most of the rest is Nitrogen, if you pull air into a stove to burn a fuel, it moves the excess Oxygen and all the Nitrogen up the stack with the bad ****……it doesn’t dump the Nitrogen back into the space……unless you are in a totally sealed space, in which case you spent way to much money on sealant, air will be drawn into the mild vacuum that is created……never heard of Oxygen Depletion used this way……I guess if your eyes start bleeding you know you have created an intense vacuum and you should open a port light…..

[rbk]

Originally Posted by cal40john

I thought one of the problems promoted with vented combustion is that you are drawing in air that could be mixed with exhaust gas.

Of course the rule about not using cabin air for combustion only applies to forced air heaters, not to drip pots like the Newport diesel heater.

It seems there are more rules for forced air than drip pots.

Drawing in exhaust is always a possibility but highly unlikely and extremely unlikely in quantities enough to make it any danger. Doesn't matter whether forced air or drip pot. Spillable combustion appliances period, they consume oxygen and produce exhaust gasses. Generally the forced air component only deal with heated air outside the combustion chamber.

[rbk]

Originally Posted by nwdiver

OK, air is 21% oxygen most of the rest is Nitrogen, if you pull air into a stove to burn a fuel, it moves the excess Oxygen and all the Nitrogen up the stack with the bad ****……it doesn’t dump the Nitrogen back into the space……unless you are in a totally sealed space, in which case you spent way to much money on sealant, air will be drawn into the mild vacuum that is created……never heard of Oxygen Depletion used this way……I guess if your eyes start bleeding you know you have created an intense vacuum and you should open a port light…..

Precisely. This is stack effect, as you depressurize the cabin (in the air tight cabin scenario) you'd get flue gasses backing up and extinguishing the flame due to no available back pressure up the stack. The heater would go out do to before any real vacuum would be created as flue gasses cannot travel up the stack, This would extinguish the pilot light and turn off the gas flow.

[thinwater]

Originally Posted by goboatingnow

Gas heaters in Europe must be room sealed.

Also in US (ABYC). It is the better way to do it anyway.

[Sidney777]

A Chinese Diesel heater. I use one.
Use little fuel. No SOOT. No mess. @$150
.....I have the "all in one" box. Remote control if you want to use it. But needs battery to operate.