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Old 04-09-2014, 04:30 AM   #15
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The problem is that the tank valve is analog, the switch is digital and therefore better, a bureaucrat has spoken, we therefore must click our heels just so.

<sarcasm>
<ignoring sarcasm>Switch is analog as well. It's a simple toggle. The actual valve is underneath, normally held closed by a powerful spring. When you flip on the switch, you power up an electromagnetic solenoid that pulls the valve open against the spring tension, and holds the valve open while drawing 0.75 amps.
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Old 04-09-2014, 09:17 AM   #16
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Prot.... minor point, meant in jest only....... did you mean to type ASME tank instead of ASTM tank? I've been typing acronyms also for the past 40 years...and sometimes my fingers do the walking into their own worlds....
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Old 04-09-2014, 09:23 AM   #17
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Prot.... minor point, meant in jest only....... did you mean to type ASME tank instead of ASTM tank? I've been typing acronyms also for the past 40 years...and sometimes my fingers do the walking into their own worlds....
Yes. I did mean ASME. Thank you.
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Old 04-09-2014, 09:23 AM   #18
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A simple toggle essentially yields a 1 or a 0, I say it is digital.

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Old 04-09-2014, 09:38 AM   #19
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Kinda reminds me of arguments with buyers, "maximum,minimum,shall,will, and all those other phrases that drive us engineers to distraction.😁😁😁
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Old 04-09-2014, 12:23 PM   #20
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The tank valve is unreachable without jacking up the van and getting underneath
This is the fundamental design error that I missed.

Many motorhomes have ASME tanks with accessible, manual tank valves.
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Old 04-09-2014, 04:05 PM   #21
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Is there some other way to perform this on/off remotely that doesn't draw .75 amps? That's a lot of amps over a 24 hour period.
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Old 04-09-2014, 04:09 PM   #22
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The valve is a spring-to-close valve. The current draw is only while the valve is open....or your system is in use. A problem, maybe, if you need to leave the furnace on overnight.
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Old 04-09-2014, 05:25 PM   #23
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Is there some other way to perform this on/off remotely that doesn't draw .75 amps? That's a lot of amps over a 24 hour period.
Several of us have added a second toggle switch inside in series w/ the external switch. Pretty handy when you're traveling down the road and someone wants to fire up the microwave or turn on the A/C necessitating firing up the generator.
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Old 04-09-2014, 06:40 PM   #24
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I'm in the process tomorrow of finishing a second switch in SERIES with the toggle. I've located the wire FROM the toggle switch to the propane valve. We're cutting in a second switch with an LED indicator light. It will be located on the plastic box/cover where the master battery switch is. I will mount it high up on the plastic box. The way it will be wired in series and downstream from the outside toggle means that with the outside toggle turned on and this switch turned on the LED will be illuminated. But if someone forgot to turn on the outside TOGGLE no LED. And if we approach a tunnel or bridge (something we experience up here in the northeast) that requires turning off propane tanks we don't have to get out and opened that stupid underbody box that requires turning the black plastic knob 87 revolutions to open it and then close it and again remember once we are out of the tunnel to reverse the procedure. I will be able to do it from inside.

FYI, the best way to access the wire is to remove the right rear flip seat. Then only 2 screws hold down the wooden cover over the wheel well. Along the outside wall is a large wire loom. Located the smaller red wires and using someone outside flipping on and then off the toggle and with a 12volt test light probe, find the wire FROM the toggle which goes then TO the propane valve. Chose your location. Chose your switch. And soon a 2nd switch is installed.
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Old 04-09-2014, 06:49 PM   #25
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Many thanks for the information. It will save many hours of wondering where to start looking. Good idea about the LED and it's position in circuit.
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Old 04-09-2014, 07:31 PM   #26
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Humm..... am I confused?
In my 2014 Interstate if I turn off the coach electrics with the switch by the sliding door, that also shuts the propane valve. So if you need to turn it off temporarily, such as when filling the tank or going through a tunnel, why not use that?
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Old 04-09-2014, 08:45 PM   #27
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LP external toggle switch problem

I have a 2013 and found out the same thing. If I turn the main power off under the lounge bench my propane is turned off.
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Old 04-09-2014, 08:47 PM   #28
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Those of us w/ older models don't have the main battery disconnect by the slider. It's under the rear lounge. Not exactly handy. Where's the one by the slider?

When I suggested this mod to Airstream, they thought it was a good idea so maybe in the 2015 model . . .
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