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Changing lp heater to use natural gas

I have been told that you can change a heater to accept natural gasby changing an orifice . is this true?

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Yes. the orifice has a tiny hole in it.It is located at the tip of the pilot before the flame, and at the tip of the injectors. Natural gas and propane molecules are different sizes in the vapor state. The orifice regulates how much vapor comes out. You need to change the orifice in the pilot and the burner injectors for it to work properly. If you don't you will get a very large flame or a very small one, depending which way convert from. If you have the papers from the company that made the heater, they should be able to help you changer over. You also may need to make some adjustment if you are at high altitude, 2,000' or more, as the air is thinner (less oxygen) so the regulator needs to be set to higher volume.

Posted on Mar 10, 2008

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1 Answer

Convert to natural gas


To convert the heater to natural gas you will need to change the orifices in the gas unit to natural gas. I am assuming you now have it on LP gas. Hope this helps. You should have someone who knows to change the orifices over. Most appliance parts dealer carry them.

Jul 18, 2016 | Raypak Rp2100 Pool & Spa Heater Lonox 407k...

1 Answer

How do I change from LP gas to Natural gas? Does this unit have a switch for that?


There is usually an orifice change that needs to be made to switch from LP to LNG. For safety's sake, you MUST contact the manufacturer for the procedure for your specific device.

Oct 22, 2014 | Pool & Spa

1 Answer

How do I convert my rheem water heater from lp to natural gas model#21vp40-1p


Call Rheem
Generally the company does not support changing type of gas since propane burns much hotter and has more pressure than natural gas.
You need different gas control valve, and need cast iron burner and orifice than matches that specific gas control valve.
http://waterheatertimer.org/images/IMG_1826-LP-burner-450.jpg
http://waterheatertimer.org/Water-heater-manufacturers.html

Gene

Sep 14, 2014 | Water Heaters

1 Answer

Is a 650 delta gas valve for natural gas be used with lp


no.
propane burns much hotter than natural gas, and has higher pressure
gas valve and burner and orifice must be changed to switch between natural gas and propane
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html
Most manufacturers do not support converting gas on heater.

Gene

Sep 13, 2014 | Rheem 40 Gallon FVR NATGAS Low WATER...

1 Answer

Gas conversion lp kit 8927 has 2 pilot orifices...I only need 1, correct?


The smallest pilot orifice is used for LP. Make sure you read the instructions thoroughly. Usually the gas valve pressure regulator is disabled and the burner orifices are also changed. Good luck and hope this helps.

Aug 11, 2014 | Williams Wall Heaters: 30,000 Btu/hr...

1 Answer

Model# BWH30NLTB


Unit goes under sure heat name also.
My unit emitted unburnt gas smell the minute pilot started,
and was annoying during burner operation.
I discovered they built unit with primary pilot that had 2 ports.
They used LP and sealed off natural gas,instead turning lp/nat
knob on back activates second pilot for natural gas use.
This means natural gas goes thru LP pilot orifice and burns
slightly off during normal natural gas use(by design).
The unused natural gas orifice has 1 air mix hole and the LP orifice
has 2 air mix holes.
I carefully plugged 1 of the holes in the LP orifice and suddenly
pilot gas flame seated correctly on orifice port.Gone was the
unburnt odor of natural gas.
The typical flame in a flame appearance now was exhibited by
the small pilot,secondary pilot remained consistent with manual
picture.
Of course, to use with LP I would have to open blocked air mix
hole in addition to the other changes per manual.
Hope this helps someone with similar condition.

Dec 31, 2012 | Reddy Heating & Cooling

1 Answer

We like to convirt LP Water Heater to Natural Gas Water Heater, PG & E told us to replace pilot burner orifice. My question is , 1- is it possiable to do that? 2- If it is What is the part number...


yasharer,

Yes it is possible to convert any gas appliance to natural gas or from natural gas to LP. The only difference is the size of the orifice used in the burner. I have a tip at http://www.fixya.com/support/r7207798-changing_gas_appliance_from_natural_gas which explains everything you will need to know to get the part and change it out.

Thanks for using FixYa and for the great rating.

hardrocko

Dec 10, 2010 | Heating & Cooling

1 Answer

Change from natural gas to propane


1.You will need to change the pilot orifice and the burner orifices
2. You may need to change the gas control valve. Some gas control valves are made for natural gas and some are made for LP. They have regulators built-in, that deliver the correct pressure respectively. Natural gas is 3.5 inches of water column, LP is 10 inches of water column.
Some manufacturers sell kits to change the spring in the regulator from Nat to LP
You would need a parts breakdown on the specific model number of your fryer to find the parts you need. Hope this helps.

Apr 07, 2009 | Imperial IFS40 Deep Fryer

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