Barbecue Grill Conversion From Natural Gas to Propane And LP to NG.
hood style gas bbq grill conversion orifices with different openings
When a gas barbecue grill is being converted from natural gas to liquid propane or from liquid propane to natural gas there are 2 changes to the barbecue that have to be made. The regulators have to be changed.
Natural gas can be pressurized differently due to altitude, length of the gas line run and depending on how many appliances are on the same gas line. However, once the gas is coming into the barbecue grill the appliance regulator is usually going to regulate natural gas at two to four inches of water column. Because we are working with pressures less than one pound per square inch measuring the inches of water column displacement allows denominations of pressure.
Liquid propane can also be under different pressures but as LP gas comes into the barbecue grill it will always be pressurized to eleven inches of water column displacement.
In addition to changing the regulator when converting a barbeque grill from one gas type to another gas type the orifice on each control valve on the BBQ has to be changed. That means the side burner controls, rotisserie controls, the main BBQ valve controls, smoker controls, every control valve will have an orifice on it and every orifice has to be changed. LP gas is a solid liquid that vaporizes (boils) into a gas when it is being used in low-pressure appliances like gas fireplaces, fire pits and barbecue grills. A orifice for LP gas will be drilled with an opening determined by the BTU rating of the BBQ burner.
The image above shows hood-style orifices that screw onto a control valve. When installed into the barbecue the orifice will be inserted into the venturi tube of the gas grill burner and will spit gas into the burner to ignite. The hole in the orifice will determine how much gas flows into the burner and how hot the barbecue grill can become.
control valve to orifice to burner demonstration
In the image showing above the far left hood orifice shows a starter hole which is how a orifice comes when it is brand new. The center image shows the hole in the orifice drilled for 25,000 BTU gas grill. Most barbecues have a burner rating of 11,000 to 13,000 BTU but these orifices were taken from a barbecue that uses a “U” burner which is like having 2 straight pipe burners. The far right image is an orifice made for natural gas. Notice the opening in the natural gas orifice is twice the size of the LP orifice.
spud style orifices will screw into the control valve.
The spud-style orifice showing in this image screws IN to the control valve instead of ON to the control valve like the hood-style orifices showing above. Different manufacturers will use different sizes and styles or spud orifices. Either type of orifice works the same way. All the orifices in this image are new and have starter holes in them. The starter hole, if used would allow approximately 7,ooo BTU of LP gas and if installed in a NG grill no gas would pass through this hole.
The two orifices showing on the left side of this image are both used in different versions of the Turbo STS model gas barbecues. On our site where these Turbo bbq grill repair parts are available the far left orifice is item 31500 and the smaller orifice to the right of the far left orifice is item 31300. The smaller spud orifice is approximately 5 mm at the hex head and the 31500 is 9 mm.
Some gas barbecues will have different orifices in the control valves and other orifices in the rotisserie, side burner or smoker burner so always check to be sure of what is needed. An orifice is basically like the jet in an old carburetor. The gas flow is affected by the opening in the orifice.
viking bbq grill control valves with orifice
As an example this is a picture of a Viking control valve with a hood orifice on it. If this was in a natural gas barbecue and the barbeque needed to be converted to use LP gas this orifice just unscrews and the new one screws onto the control valve. The orifices are not usually visible in the bbq. Remove the cooking grates, the heat plates and lift the burners out of the barbecue. In the front fire wall inside the cooking area is the hole where the venturi tube of the bbq burner goes into the control panel. Using a 7/16 inch ratchet socket the orifice can be unscrewed and the new orifice screwed onto the valve.
Majestic Grill Parts
4 Feburary 2012.
Service@Grill-Repair.com
954.247.4552.
Barbecue Grill Conversion From Natural Gas to Propane And LP to NG.
hood style gas bbq grill conversion orifices with different openings
When a gas barbecue grill is being converted from natural gas to liquid propane or from liquid propane to natural gas there are 2 changes to the barbecue that have to be made. The regulators have to be changed.
Natural gas can be pressurized differently due to altitude, length of the gas line run and depending on how many appliances are on the same gas line. However, once the gas is coming into the barbecue grill the appliance regulator is usually going to regulate natural gas at two to four inches of water column. Because we are working with pressures less than one pound per square inch measuring the inches of water column displacement allows denominations of pressure.
Liquid propane can also be under different pressures but as LP gas comes into the barbecue grill it will always be pressurized to eleven inches of water column displacement.
In addition to changing the regulator when converting a barbeque grill from one gas type to another gas type the orifice on each control valve on the BBQ has to be changed. That means the side burner controls, rotisserie controls, the main BBQ valve controls, smoker controls, every control valve will have an orifice on it and every orifice has to be changed. LP gas is a solid liquid that vaporizes (boils) into a gas when it is being used in low-pressure appliances like gas fireplaces, fire pits and barbecue grills. A orifice for LP gas will be drilled with an opening determined by the BTU rating of the BBQ burner.
The image above shows hood-style orifices that screw onto a control valve. When installed into the barbecue the orifice will be inserted into the venturi tube of the gas grill burner and will spit gas into the burner to ignite. The hole in the orifice will determine how much gas flows into the burner and how hot the barbecue grill can become.
control valve to orifice to burner demonstration
In the image showing above the far left hood orifice shows a starter hole which is how a orifice comes when it is brand new. The center image shows the hole in the orifice drilled for 25,000 BTU gas grill. Most barbecues have a burner rating of 11,000 to 13,000 BTU but these orifices were taken from a barbecue that uses a “U” burner which is like having 2 straight pipe burners. The far right image is an orifice made for natural gas. Notice the opening in the natural gas orifice is twice the size of the LP orifice.
spud style orifices will screw into the control valve.
The spud-style orifice showing in this image screws IN to the control valve instead of ON to the control valve like the hood-style orifices showing above. Different manufacturers will use different sizes and styles or spud orifices. Either type of orifice works the same way. All the orifices in this image are new and have starter holes in them. The starter hole, if used would allow approximately 7,ooo BTU of LP gas and if installed in a NG grill no gas would pass through this hole.
The two orifices showing on the left side of this image are both used in different versions of the Turbo STS model gas barbecues. On our site where these Turbo bbq grill repair parts are available the far left orifice is item 31500 and the smaller orifice to the right of the far left orifice is item 31300. The smaller spud orifice is approximately 5 mm at the hex head and the 31500 is 9 mm.
Some gas barbecues will have different orifices in the control valves and other orifices in the rotisserie, side burner or smoker burner so always check to be sure of what is needed. An orifice is basically like the jet in an old carburetor. The gas flow is affected by the opening in the orifice.
viking bbq grill control valves with orifice
As an example this is a picture of a Viking control valve with a hood orifice on it. If this was in a natural gas barbecue and the barbeque needed to be converted to use LP gas this orifice just unscrews and the new one screws onto the control valve. The orifices are not usually visible in the bbq. Remove the cooking grates, the heat plates and lift the burners out of the barbecue. In the front fire wall inside the cooking area is the hole where the venturi tube of the bbq burner goes into the control panel. Using a 7/16 inch ratchet socket the orifice can be unscrewed and the new orifice screwed onto the valve.
Majestic Grill Parts
4 Feburary 2012.
Service@Grill-Repair.com
954.247.4552.
Firemagic Built In Grill and Accessories In New Custom Outdoor Kitchen 2012
If you are on this page you know we build custom outdoor kitchens on-site, for perfectly fabricated backyard grill islands and bars in South Florida. This is our latest backyard and we did a lot of work here. This custom outdoor kitchen is built for a beautiful Firemagic gas grill with infrared burners, cast stainless convection burners, glow-plug ignition electrodes and all the solid features that make R.H. Peterson one of the best backyard accessory fabricators in the world.
custom firemagic outdoor kitchen with blue granite
The Firemagic OCBE is an insert that can be used to install a gas fire pit burner in to any custom designed fire pit structure. This fire pit structure was designed by the homeowner and it was finished using the same granite and stone work to match the house and columns and the outdoor kitchen we built. The gas firepit is controlled with a on/off remote transmitter. The fire pit has natural lava rock stones in the center to radiate heat and allow the flames to move and shift naturally. We also install a stainless ring in our gas fire pits so the heat is shielded from the edge of the custom fabricated granite.
When any gas flame touches a solid object carbon is created and the flame carbon will leave marks on this beautiful blue and gold granite slab. Carbon is usually very easy to wipe-off but most people are not cleaning their built in barbeque grill and gas fire pit every day. We use a stainless ring to push the flame a little bit higher and this saves the granite color. If they choose to hide the ring it can be made slightly smaller and lava rock will rest on the outside of the ring to camouflage the stainless inside the lava rocks.
Custom fire pit with blue granite and natural stone bricks
This gas fire pit is also remote controlled. Instead of natural lava rocks this fire pit has crushed fireglass. The fire glass is crushed black but we also used orange and green fire glass to put a logo for the University of Miami in the fireglass. When the gas fire pit is burning the flames will move across and around the crushed fire glass for a sparkling and colorful effect.
custom fire pit with crushed fire glass university of Miami
Firemagic Built In Grill and Accessories In New Custom Outdoor Kitchen 2012
If you are on this page you know we build custom outdoor kitchens on-site, for perfectly fabricated backyard grill islands and bars in South Florida. This is our latest backyard and we did a lot of work here. This custom outdoor kitchen is built for a beautiful Firemagic gas grill with infrared burners, cast stainless convection burners, glow-plug ignition electrodes and all the solid features that make R.H. Peterson one of the best backyard accessory fabricators in the world.
custom firemagic outdoor kitchen with blue granite
The Firemagic OCBE is an insert that can be used to install a gas fire pit burner in to any custom designed fire pit structure. This fire pit structure was designed by the homeowner and it was finished using the same granite and stone work to match the house and columns and the outdoor kitchen we built. The gas firepit is controlled with a on/off remote transmitter. The fire pit has natural lava rock stones in the center to radiate heat and allow the flames to move and shift naturally. We also install a stainless ring in our gas fire pits so the heat is shielded from the edge of the custom fabricated granite.
When any gas flame touches a solid object carbon is created and the flame carbon will leave marks on this beautiful blue and gold granite slab. Carbon is usually very easy to wipe-off but most people are not cleaning their built in barbeque grill and gas fire pit every day. We use a stainless ring to push the flame a little bit higher and this saves the granite color. If they choose to hide the ring it can be made slightly smaller and lava rock will rest on the outside of the ring to camouflage the stainless inside the lava rocks.
Custom fire pit with blue granite and natural stone bricks
This gas fire pit is also remote controlled. Instead of natural lava rocks this fire pit has crushed fireglass. The fire glass is crushed black but we also used orange and green fire glass to put a logo for the University of Miami in the fireglass. When the gas fire pit is burning the flames will move across and around the crushed fire glass for a sparkling and colorful effect.
custom fire pit with crushed fire glass university of Miami
Ventless Gas Fireplace with Flame, with Fire Glass and See-Through Vent-Free Gas Fires
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Amazing and beautiful gas fireplaces for ventless fireplace installations can be single sided, two-sided and three-sided. Vent free gas fireplaces are very realistic today but the gas fireplace that does not try to pretend to be a wood burning fireplace brings a modern design and a look that can define the room and even the house. Straight clean lines and bright colors like the fire glass burners are incredible. The river rocks, fire balls and shapes look more natural without pretending to be wood burning, The alternative gas fireplace designs that are now available for unvented gas fireplaces are amazing design effects and can add heat to the room they beautify.
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Ventless Gas Fireplace Troubleshooting: Get The Fireplace to Light.
This New Years weekend I received a telephone call from a customer who purchased an alternative ventless glass gas fireplace from us a little over a year ago. Her pilot light was burning but she could not get the fireplace to light. She called her installer and he also could not get the fireplace to light. This gas fireplace has an on-off remote controlled valve made by Rasmussen.
Some older gas fireplaces used to have a toggle switch attached to the control valve inside the fireplace. Some more recent fireplaces by R.H. Peterson and Vanguard, Majestic and Superior fireplaces also had toggle switches. The on-off remote control combination of a receiver-transmitter use the same idea as a toggle switch and it is common to replace an old style toggle switch with a receiver box in order to convert a gas log fireplace to a remote controlled unit.
A receiver box acts like the toggle switch turning the fireplace on or off and the hand held transmitter or any other kind of transmitter flips the toggle switch to the “on” or “off” position. The receiver is hard-wired to the fireplace burner control valve and most people leave their receiver inside the fireplace. There is a real danger to overheating a receiver box because the receiver box holds batteries that can be damaged by heat. Often if a fireplace with a remote control will not be controlled by a remote the problem is either low batteries or batteries damaged by heat. If the batteries are damaged by heat while inside the receiver box, inside the fireplace the receiver box is usually irreparably damaged.
The other problem with unvented gas fireplace has to do with the safety features that must be used in every vent-free gas log. The ODS (oxygen depletion sensor) is a very simple function that leaves a thermocouple in the pilot light so the thermocouple will cool and turn off the control valve if the pilot light begins to raise up looking for oxygen to keep it burning. On the sides of any pilot tube are small holes in the pilot light tube that allow oxygen to be sucked into the tube to mix with gas and allow the pilot to burn. Ventless gas fireplaces should be cleaned as part of typical maintenance but when they are not properly cleaned these tiny holes are small enough to be severly clogged by tiny bits of dust, pet hair and pollen in the air.
ventless gas fireplace oxygen depletion sensor
Usually when our service technicians are called to a home because a vent-free gas fireplace will not properly light this maintenance issue is the problem. We bring a small but powerful vacuum and leave it lying against the pilot assembly to cause flowing air to pull anything from these small air holes. Once it has been vacuumed we may also use a can of compressed air. We do not go to the compressed air can first because we do not want to blow the foreign substance into the pilot assembly.
If the batteries are fully charged or new and the receiver box is not damaged by overheating but the fireplace will not light the next thing to check is the receiver codes. A receiver box will have a “Learn” button on it and sometimes when the batteries are changed or if the power is interrupted by heat the code for the transmitter will need to be relearned. Most received boxes are very versatile and will learn tens of thousands of varying transmitting codes. Hold the Learn button for about 5 seconds until a series of beeps indicates the box is wiped clean and “listening. Then press any button on the transmitter for the receiver to remember the proper code for that transmitting controller.
Finally, this specific fireplace valve uses a solenoid control.
This control valve with solenoid is used with remote controlled receiver and transmitter.
Sometimes it is possible the solenoid has become too strongly attached inside the control valve. This could be caused by over tightening at the original factory, by constant heating an expanding and by a combination of these two causes. The solenoid can be removed with a flat head screwdriver. Reinstall the solenoid “hand-tight” so it is not over tightened in the valve.
The solenoid triggers the switch like an internal toggle switch.
Vent free gas fireplaces have always been a popular commodity but with the alternative gas fireplace that display crushed reflective glass colors, stones, shapes and fireballs ventless gas fireplaces are more popular than ever. The limited BTU’s, control options like the ODS and flame patterns are as important as properly maintaining the fireplace with clean materials and fully charged batteries.
The process for lighting a vent-free gas log fireplace involves holding the control valve open manually until the thermocouple is transferring enough of a charge to pull the control valve magnet into the open position. Soon we will explain the process of the thermocouple to help understand the safety features in your vent free gas fireplace.