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How To Guides

How to Convert Celestial CSA Burner Kits to Natural Gas

Our CSA burner kits are very popular with DIYers because they make it very easy to build a propane fire table. And, since the kits are CSA-certified, they can be used in fire pits located in public access areas such as restaurants and Airbnb rentals.  

Installed properly, the CSA certification ensures safety. Therefore, we recommend you have a qualified licensed gas installer make all of your gas connections.

If you have access to natural gas as a fuel source, our CSA burner kits can easily be modified with the use of a natural gas conversion kit.

The Celestial natural gas conversion kit includes everything needed to convert our CSA burners from propane to natural gas. It includes a hose with a quick-connect, natural gas orifice, and a sleeve to cover the propane air mixer.  

When purchasing the natural gas conversion kit be sure to select the right size. The orifice in the conversion kit is sized according to BTUs and will need to match the BTU/hr. rating of the CSA burner you’re converting.

Step-by-Step Conversion

  1. Unpack your conversion kit and take note of each component. The conversion kit will include the hose assembly, a stainless-steel sleeve, and an orifice.
  1. To get started, remove the end of the flex hose attached to the bottom of the burner. This will be tight, so be sure to use two wrenches to avoid damaging anything. These are all standard threads, so it’s lefty loosey here.
  1. Remove the coupling. Again, this will be tight so you may have to put a little extra torque on the wrench. Remove the propane orifice—on the inside of the coupling— replace it with the natural gas orifice. You’ll notice, the new natural gas orifice is larger than the old propane orifice.  This is because it takes 2.5 times more natural gas than propane to get the same result. So, a larger volume of natural gas is required to produce the same flame height.
  1. Slide the sleeve over the propane air mixer. (Natural gas burns much cleaner than propane, so we don’t need to add air to the gas mixture.) The sleeve won’t be tight; this is normal. Now you can connect the coupling that contains the orifice and reattach the flex hose.
  1. Finally, disconnect the rubber propane hose and replace it with the new natural gas hose. This is a flared fitting, so pipe tape should not be used.  The other end of the hose—featuring the quick connect—attaches to your natural gas supply.  This fitting is different than the flared. It has half-inch NPT threads.  Because they are tapered threads, you will need to use yellow Teflon gas tape for this connection.  

The Follow-Up

Once everything is hooked up, all gas connections should be tested for leaks using soapy water.

The burner requires a natural gas supply pressure between 3 ½ inches to 7 inches of the water column. Your gas installer will know if they need to add a regulator to reduce your supply pressure. If needed, they will most likely have one on their truck, but if not, we also carry natural gas regulators.

We always recommend you have a qualified, licensed gas installer make all of your gas connections. 

Feel Free to Call

We hope the video is helpful to you in understanding what’s involved in converting a Celestial CSA-certified propane kit to natural gas. However, if you still have questions, we can easily be reached by phone (301-245-7755) and online, Monday through Friday from 8 a.m. to 5 p.m. Eastern time.

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