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I want to run my Natural Gas Generator off of Propane. What do I need to know?


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Old 04-07-2012, 10:31:58 PM
Nyatha Nyatha is offline
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Default I want to run my Natural Gas Generator off of Propane. What do I need to know?

Generator: Kohler 5RMY62 4.5KW set up for Natural Gas.

Model: 5RMY62

Spec: 87706-62N

Serial: 190115

I'm sure someone has done this lots... I just don't know anything about
the differences between the two gasses and what I need to change to get it
to run on propane...
Pictures are the night I brought it home and clamped it to a rollaround cart. It looks a lot better after I cleaned it...
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Old 04-07-2012, 10:37:06 PM
Nyatha Nyatha is offline
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Default Here are thos Pictures which didnt post originally...




---------- Post added at 07:37 PM ---------- Previous post was at 07:34 PM ----------

Ugh! one more try with those pics... I wonder why they wont post??! I'm using the little picture icon to get the URL from the site where they are hosted...

[IMG]http://www.flickr.com/photos/23678808@N08/6909337630/
http://www.flickr.com/photos/23678808@N08/7055427439/
http://www.flickr.com/photos/23678808@N08/7055427359/[/IMG]
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Old 04-07-2012, 11:00:32 PM
Jim Rankin Jim Rankin is offline
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Default Re: I want to run my Natural Gas Generator off of Propane. What do I need to know?

Looks like you just need to supply it with low pressure LP vapor. The mixture might need adjusting slightly and also may need to adjust the timing a little bit advanced.
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Old 04-08-2012, 12:08:32 AM
Nyatha Nyatha is offline
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Default Re: I want to run my Natural Gas Generator off of Propane. What do I need to know?

I hooked it up to a BBQ sized Propane tank today and tried to start it up... it kinda just chugs then dies...
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Old 04-08-2012, 10:22:03 AM
bitsnpieces1 bitsnpieces1 is offline
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Default Re: I want to run my Natural Gas Generator off of Propane. What do I need to know?

I believe the conversion would need a different sized jet (due to different energy densities), and possibly a different regulator (mainly due to compatible inner parts- diagphrams). Gas hot water heaters use different jets for natural gas or LP gas. Les
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Old 04-08-2012, 10:25:57 AM
Ed Sparks Ed Sparks is offline
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Default Re: I want to run my Natural Gas Generator off of Propane. What do I need to know?

what type of demand regulator is on your generator?
There may be a simple swap of the input spring to swap from natural to LP.
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Old 04-08-2012, 11:24:39 AM
LWB250 LWB250 is offline
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Default Re: I want to run my Natural Gas Generator off of Propane. What do I need to know?

No changes are necessary to the mixer or regulator. You need to have a demand (pancake) regulator with 4-6 ounces of pressure or 7-11" of water column coming into it and that's about it. Looks like everything is there for the system to work - just make sure you've got the correct inlet pressure to the fuel solenoid - if it's too high the regulator will lock off, that is, not pass any fuel.

The smaller units don't require any changes other than minor adjustments for load and that's it.

Dan
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