CNG/LPG gas hose

Dec 31, 2011
191
Hunter 40.5 Seattle
Given a few requests, I am posting a recap with a bit more info and photos.

I converted from CNG to LPG as it became very difficult to refill tanks, and almost impossible when cruising away from home. I chose to upgrade the stove as well, but you may be able to get by changing the burners. New stoves have thermal sensors to shut off gas if the flame goes out. I found this to be worth it as we cook regularly on board.

The stove is North American Standard Force 10 3 burners. It drops right into place. It's a perfect swap fit with the original stove and quite an upgrade. (See photos and link)

The grey gas hose runs to the middle of the transom, then under the port side of the bed in a white conduit and through the locker to the galley (see photo, took a little bit to find it).

The switch for the solenoid is installed on top of the stove with the 12v wire running under the floor boards, and directly connected to a spare breaker. It is clearly visible. Can't miss it. It's two steps to turn it on 1. breaker on panel 2. switch above stove. (see photo)

The tank is Worthington 10 lbs aluminum that won't rust. A bit pricey but worry-free. (see link and photo)

The propane locker is here. It comes with the regulator and tank (if they have it is stock, otherwise it can be ordered separately as it was in my case in the interest of time). The tank is vented on the transom in the center of the boat. 40.5s have a tendency to heel, and placing on the side would make it susceptible to flooding.. (see photo point to location before the drill). Even then, it is installed with syphon loop to prevent water in case of high following seas or of a wave breaking on the transom.

Most parts came from Sure Marine in Seattle.

So very happy with the result, and the new stove looks and works great, like I said earlier baked to pizzas (at the same time) this weekend. They were delicious.

One added benefit to being to find gas anywhere, LPG burns way hotter than CNG. It makes a difference.

Good luck and feel free to PM with me questions

On to replacing the holding tank next, it got delivered today....

Frederick
svpardonmyfrench.com
Seattle WA
 

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Last edited:

Gunni

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Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
Looks like your solenoid is where it belongs, in the bottle locker at the gas supply. Having the gas supply shut off at the stove would be a major safety fail.

Your breaker should energize the locker solenoid, and I suppose you have a redundant off right at the stove. Gas appliances have piezo thermocouples which turn off the gas to the burner if it goes out.
 
Dec 31, 2011
191
Hunter 40.5 Seattle
Looks like your solenoid is where it belongs, in the bottle locker at the gas supply. Having the gas supply shut off at the stove would be a major safety fail.

Your breaker should energize the locker solenoid, and I suppose you have a redundant off right at the stove. Gas appliances have piezo thermocouples which turn off the gas to the burner if it goes out.
Yes correct good catch, was only referring to the switch (made the edit on the post) and yes to the redundancy. Love the thermocouples.
 
Jan 22, 2008
8,050
Beneteau 323 Annapolis MD
The solenoid switch should NOT be at the stove. If the stove goes up in flames, you may not be able to get to the switch to shut off the gas- and every second counts. Mine is across the boat from the stove.
 
Last edited:

Gunni

.
Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
The solenoid switch should NOT be at the stove. If the stove goes up in flames, you maybe not be able to get to the swtich to shut off the gas- and every second counts. Mine is across the boat from the stove.
The stove switch is a redundant switch. He is wired back to a breaker. He has everything you have, and more!
 
Dec 31, 2011
191
Hunter 40.5 Seattle
Y
The solenoid switch should NOT be at the stove. If the stove goes up in flames, you may not be able to get to the switch to shut off the gas- and every second counts. Mine is across the boat from the stove.
Agreed, I corrected the post, it was a typo, I referred to the switch above the above. The solenoid is in the locker where it belongs.