Convert LP Patio Heater to NAT

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Old 09-06-20, 09:07 AM
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Convert LP Patio Heater to NAT

Hi. Looking to convert a 48000 BTU patio heater to Natural Gas. I've removed the housing and LP hose/regulator. What's the next steps? Is there an orifice somewhere which needs to be replaced or made larger? Thank you.



 

Last edited by PJmax; 09-06-20 at 10:51 AM. Reason: labeled picture
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Old 09-06-20, 09:56 AM
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I added an arrow to your picture. That's an orifice assembly.
Was there some type of cap screw on there ?

It looks like the brass orifice assy is removable which mean it's replaceable.
What is the make and model of the heater ?
 
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Old 09-06-20, 10:11 AM
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https://www.lowes.com/pd/Garden-Trea...ter/1000664673

the only thing I removed was the hose which was connected to the flair fitting.

I thought there was some tiny orifice somewhere. Youíre pointing to the flair fitting, correct?
 
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Old 09-06-20, 10:59 AM
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Yes.... unfortunately I was pointing to the flare fitting.
Didn't realize at first the heater was upside down.

Anyway.... I changed the labeling. The orifice is going to be in the top section just under the burner.
I'm looking for a replacement natural gas orifice for that model.

 
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Old 09-06-20, 11:07 AM
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F

found it. Now the question is with what do I replace it with
 
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Old 09-06-20, 11:24 AM
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I removed the orifice. 5/64 drill bit fit all the way through. 3/32 did not. Should I just drill the orifice with the 3/32?
 
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Old 09-06-20, 11:26 AM
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Good question. I haven't found anyone that sells a replacement for that heater. It's basically designed for propane only so no one will offer a NG conversion orifice. There are two videos below that did what you want to do. They drilled out the brass orifice. It's going to require drilling a little bit at at time to find a proper flame. You'll also need to block off some air to the burner.

Patio heater conversion 1
Patio heater conversion 2
 
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Old 09-06-20, 02:13 PM
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So I drilled to 3/32 and hooked it up. Works but donít know how well yet since itís hot outside. Iíll check the flame when it gets dark. Thanks.
 
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Old 09-06-20, 02:15 PM
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If you watch those videos.... they show covering up some of the air inlets to the burner.
You may have to try that too.
 
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Old 09-06-20, 02:42 PM
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If you look at my original pic I donít see any air inlets like the video. 🤷🏻‍♂️
 
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Old 09-06-20, 02:49 PM
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Look at the picture where I put orifice. The entire area below that is an air vent.
It allows air in at that point to mix with the gas on the way to the burner.
 
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Old 09-06-20, 04:41 PM
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Here

s the result. Flames are blue and appears at the right height per the manual.i didnít block any airflow.
 
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Old 09-06-20, 04:49 PM
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Looks pretty good from here.
 
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