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Old 11-11-2015, 07:53 AM   #1
Hvymtlc5
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Dual Propane Question

I just bought a 324MX that has two propane bottles - one on each side. Which side should I use first or does it matter? Do they both have to be turned on?
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Old 11-11-2015, 08:18 AM   #2
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I just bought a 324MX that has two propane bottles - one on each side. Which side should I use first or does it matter? Do they both have to be turned on?
It doesn't matter which tank you use first and they can be used individually or together.

The tanks are controlled by an auto-changeover regulator which allows you to control which tank you want to use first. You should become familiar with the regulator and how it works. If you look at the regulator there is a black changeover lever and an indicator cap at the top of it. This cap changes color from green to red - showing that the tank is empty.

You should identify which make and model of regulator you have and Google it to find out about the function of the lever and how the regulator works.
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Old 11-11-2015, 08:23 AM   #3
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I don't think it matters which one you use first but i think you will have a valve just above the left tank and you must select what tank for it to use. Have a great time with your travels and welcome to the forum...
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Old 11-11-2015, 08:47 AM   #4
Hvymtlc5
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Found the regulator control is on the side opposite from the entry door.

I'm assuming that the lever handle points to the tank's gas line that is in service? So handle to the right takes me to the tank that is on the entry door side, and to the left is the tank under the reg switch.

To the right the color is green. When I switch it to the tank that is under the reg, then it turns "red/green".

thanks!
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Old 11-11-2015, 10:34 AM   #5
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Yup, if the black handle is pointing to a tank that's the one in use. As for the red /green that means that tank is half full. Don't depend on the colors as they give you an idea as to how much LP that you have.
If you turn the lever to be on both tanks Google your regulator as mentioned above
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Old 11-11-2015, 01:12 PM   #6
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Doesn't matter which tank you use first. Select one, if green, use it. When it turns red, the changeover on mine is automatic. I then select the tank in use (indicator changes from red to green) and refill the empty one (red) and begin the process all over again.
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Old 11-11-2015, 05:50 PM   #7
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Silly question, but does propane ever get old, like gas or diesel does?
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Old 11-11-2015, 06:28 PM   #8
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Silly question, but does propane ever get old, like gas or diesel does?

Not that I know of. At one point my old trailer sat unused for 5 years, and the propane was fine when I finally used it.
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Old 11-11-2015, 06:43 PM   #9
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No, it doesn't get old, but it is subject to oderant fade. Propane is odorless and an additive is added so we can smell it when we have a leak. The odor fades over time. This is a problem if you have a leak.....you won't be able to smell it.


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Old 11-12-2015, 04:08 AM   #10
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No, it doesn't get old, but it is subject to oderant fade. Propane is odorless and an additive is added so we can smell it when we have a leak. The odor fades over time. This is a problem if you have a leak.....you won't be able to smell it.
Did not realize the odor can fade over time. Reading these forums for 3+ years, see common topics, but often enough, pick up on new gems of information.

Thanks!
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Old 11-12-2015, 06:05 AM   #11
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Originally Posted by Hvymtlc5 View Post
I just bought a 324MX that has two propane bottles - one on each side. Which side should I use first or does it matter? Do they both have to be turned on?
I am wondering why the dealer did not cover this most basic of basic RV operations item with you during the PDI?
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Old 12-13-2015, 07:01 AM   #12
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Doesn't matter which tank you use first. Select one, if green, use it. When it turns red, the changeover on mine is automatic. I then select the tank in use (indicator changes from red to green) and refill the empty one (red) and begin the process all over again.
Interesting I keep both tanks open at all times, when the 1st tank is empty the indicator changes to Red/Green, and changes to the full tank.
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Old 12-14-2015, 05:45 PM   #13
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Dual Propane Question

The operation of the auto-switchover is sometimes confusing. With both tanks on, when the tank the handle points at is empty, the indicator will turn red and propane will automatically be supplied by the other tank. The handle will not move automatically. The handle basically controls which tank the indicator is on.

Many people would rather only open one tank until it is empty then close it and open the other. This way, you know when one is empty without remembering to periodically look and potentially run out on both.


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Old 12-14-2015, 07:33 PM   #14
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The operation of the auto-switchover is sometimes confusing. With both tanks on, when the tank the handle points at is empty, the indicator will turn red and propane will automatically be supplied by the other tank. The handle will not move automatically. The handle basically controls which tank the indicator is on.

Many people would rather only open one tank until it is empty then close it and open the other. This way, you know when one is empty without remembering to periodically look and potentially run out on both.


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That's the best explanation I have seen. Thanks
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Old 12-14-2015, 09:15 PM   #15
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The only problem with that system of using only one tank open at a time is, you will wake to a very cold trailer if the tank goes empty when you're sleeping. Just like learning how often to empty the waste tanks, you don't have to check the propane every day, unless you are in very cold weather. I really like the technology that maintains a constant flow of gas, and only check occasionally in warm weather.
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Old 12-15-2015, 06:02 AM   #16
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I have a feeing, it would be more of a problem to wake up in the middle of the night and find out both tanks are empty.
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Old 12-15-2015, 06:52 AM   #17
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To avoid the convenience of the new technology, simply remove all the plumbing associated with the dual tank system. Then, when your tank runs empty, you can go out, unhook the empty bottle and then switch the bottle side to side, then connect the full bottle to the system. That way you don't have to worry about forgetting to check the indicator!
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Old 12-15-2015, 08:33 AM   #18
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Question

My 2009 Keystone Copper Canyon has a manual regulator/switch between the two LP tanks. However, when switching to the other tank, it doesn't seem to allow the propane through even after turning the black indicator switch.

I've read there's a switch inside to avoid sudden changes in LP pressure and I'm supposed to slowly turn on the extra tank when I need it. Anybody have that problem because mine doesn't seem to work well.

Maybe I need to change the regulator to an automatic one?
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Old 12-15-2015, 09:15 AM   #19
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Dual Propane Question

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Originally Posted by MotownJG View Post
I've read there's a switch inside to avoid sudden changes in LP pressure and I'm supposed to slowly turn on the extra tank when I need it. Anybody have that problem because mine doesn't seem to work well.



DOT tanks after sometime in the 2000s have a builtin protection device that when too much flow is detected (broken line or disconnected) is detected, the flow is shutdown. Always open your tank slowly to keep the protection from tripping.


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Old 12-15-2015, 10:58 AM   #20
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I have a feeing, it would be more of a problem to wake up in the middle of the night and find out both tanks are empty.
X2, waking up in -10 and out of LP isn't a fun thing when the nearest LP station is 2 hrs away.......been there, done that and it'll never happen again.
1 tank at a time and you'll never have problems
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