Nexgrill 720-0582B User manual

NOTICE
Dear Customers:
Thank you for choosing our barbeque grill and hope that you enjoy
our product.
Our gas valves and components are preset at the factory to operate
on Liquid Propane (LP). If you wish to convert your grill from LP to
Natural Gas (NG), we strongly recommend that you hire a
professionally trained technician to convert the unit. Please
understand that we will not be responsible for any liability, personal
injury, or property damage resulting from an improperly converted
grill.
We will provide warranty parts for this product after it is converted,
however, we will not honor any warranty claims for parts damaged
during the conversion of the original LP valves and orifices to NG
configuration if the conversion is done improperly.
280 Machlin Court, City of Industry, CA 91789
(Tel) 800-790-1299 (Fax) 909-718-1949

Orifice Chart
The different burner valves in this grill have different BTU ratings. This means that the amount of gas coming from
each orifice varies in order to create the BTU's. The holes in the orifices themselves are drilled to different sizes so as
to allow the proper amount of gas to flow through them. Please note the chart below as an easy reference for the
various orifice opening sizes for the different valves in the grill.
Liquid Propane (LP) Natural Gas (NG)
Components Orifice Size BTU Orifice Size BTU
Main Burner 1.02mm 12,000 1.70mm 12,000
Searing Side
Burner 1.15mm 15,000 1.90mm 15,000
WARNING! FALURE TO HEED THESE WARNINGS COULD RESULT IN A FIRE OR EXPLOSION THAT
COULD CAUSE SERIOUS BODILY INJURY, DEATH OR PROPERTY DAMAGE.
Installation of this Natural Gas Conversion kit must be performed by a QUALIFIED GAS TECHNICIAN ONLY. DO
NOT ATTEMPT TO INSTALL THIS KIT YOURSELF. Improper installation could result in a gas leak which could
cause a fire or explosion and cause serious bodily injury, death or property damage. Leaks due to improper
installation could occur immediately or slowly over time. If you hear any unusual noises or leaks, smell gas or
unusual odors, or notice anything unusual with the operation of your gas appliance after the installation, immediately
shut off the gas supply and discontinue use until the appliance is repaired by a QUALIFIED GAS TECHNICIAN.
If there are damaged or missing parts when you unpack this kit, call 1-800-790-1299. DO NOT have your
QUALIFIED GAS TECHNICIAN attempt to install this kit until you receive replacement for any damaged or missing
parts.
NG Conversion Kit for Item #: Model # 720-0582B
Natural Gas Conversion for Item# /Model# 720-0582B
2
720-0582B, 730-0582B orifice size
Allen Key
6mm Nut Driver
6mm Wrench
Below tools are included in package:

2. Turn all knobs to OFF. Turn off LP gas supply and remove the LP cylinder from the grill cart. Remove the brass
adapter of the LP regulator from the manifold with a wrench.
3. Install the NG regulator hose to the manifold and secure using a wrench. Tighten the NG regulator on the side panel
with two 5/32*10mm screws that pre-assemble on the NG regulator.
Warning: Make sure all grill components are completely cool and gas supply is turned off and removed from grill
prior to performing the conversion.
1: Install the regulator hose (short hose) to the end of the regulator marked "OUT". Install the brass connector to the
other end of the regulator marked "IN". (If regulator, hose, and brass connector are pre-assembled, you may disregard
this step.
3
14mm wrench
NG Hose and Regulator Conversion
Tools required:
Phillips Head Screwdriver (+)
Natural Gas Conversion for Item# /Model# 720-0582B

Main Tube Burner Conversion
Tools required:
Steps：
1. Remove the warming rack, cooking grids, and flame tamers.
2. Remove the main tube burners by removing the screws securing the burners near the back wall of the firebox
and the screw near the front of the firebox that secures the igniter bracket to the burner. Gently lift the tube
burners up and out.
4. Replace the tube burners and screw back into original position.
4
Phillips Head Screwdriver (+)
6 mm Nut Driver
Natural Gas Conversion for Item# /Model# 720-0582B
3. Locate the orifice at the end of valve and remove by with adjustable Nut Driver.
The NG orifice is preassembled on the valve, behind the LP orifice.
Remove LP orifice for each of the main burners (total 4 tube burners).

Searing Side Burner Conversion
Tools required:
The step-by-step instruction for converting the searing side burner’s orifice are stated below.
1. Remove the screw under C bracket to take off the C bracket, then remove the searing side burner LP orifice with
6mm wrench.
2. Replace the NG orifice to the connector, then replace the C bracket to the original position.
5
6mm Wrench
Phillips Head Screwdriver (+)
Natural Gas Conversion for Item# /Model# 720-0582B

For Main Tube Burner and Side Burner Conversion Only
(The 3 steps below are not necessary for the
Searing side burner)
Warning!! Gas Valves are preset at the factory to operate on LP gas or NG gas. If you wish to convert, be sure to
consult your gas supplier or trained technician for the conversion.
A. After the Natural Gas regulator has been installed, attach the PVC Gas hose to the regulator (See drawing below).
B. Connect the other end of the PVC Gas Hose to the house gas line using the quick-connect fitting. To use the quick
connect fitting, lift the head of the connector back. Insert the end of the PVC hose and release the head of the
connector. Ensure connection is secure.
There is a brass adapter for natural gas lines that are pre-regulated. If the gas line is not pre-regulated, remove the
brass adapter and connect the regulator directly to the PVC gas hose.
Once conversion is complete, please attach the NG CSA certification sticker to the grill.
If you should have any questions regarding natural gas conversion, please contact customer service at 1-800-
790-1299.
You will need to adjust the High Flame setting screw when converting the barbecue from Propane to Natural Gas.
Please follow the steps as detailed below.
1. Remove each Control Knob of main tube burners and side burner by loosening the socket head grub screw with the
Allen Key.
2. Use a screw driver to turn the High Flame Set Screw counterclockwise approximately 90 degree.
3. Check that burner operates at the new high fire setting - it may be necessary to adjust the screw setting slightly to get
the ideal burner flame height.
Natural Gas Conversion for Item# /Model# 720-0582B
6

Liquid Propane (LP) Natural Gas (NG)
Components Orifice Size BTU Orifice Size BTU
Main Burner 1.12mm 14,000 1.87mm 14,000
U-shape Burner 1.07mm 13,500 1.82mm 13,500
Searing Side Burner 1.15mm 15,000 1.90mm 15,000
Rear Burner 0.94mm 10,000 1.55mm 10,000
NG Conversion Kit for Item # 881611/Model# 720-0584A
WARNING! FALURE TO HEED THESE WARNINGS COULD RESULT IN A FIRE OR EXPLOSION THAT
COULD CAUSE SERIOUS BODILY INJURY, DEATH OR PROPERTY DAMAGE.
Installation of this Natural Gas Conversion kit must be performed by a QUALIFIED GAS TECHNICIAN ONLY. DO
NOT ATTEMPT TO INSTALL THIS KIT YOURSELF. Improper installation could result in a gas leak which could
cause a fire or explosion and cause serious bodily injury, death or property damage. Leaks due to improper
installation could occur immediately or slowly over time. If you hear any unusual noises or leaks, smell gas or
unusual odors, or notice anything unusual with the operation of your gas appliance after the installation, immediately
shut off the gas supply and discontinue use until the appliance is repaired by a QUALIFIED GAS TECHNICIAN.
If there are damaged or missing parts when you unpack this kit, call 1-800-790-1299. DO NOT have your
QUALIFIED GAS TECHNICIAN attempt to install this kit until you receive replacement for any damaged or missing
parts.
Orifice Chart
The different burner valves in this grill have different BTU ratings. This means that the amount of gas coming from each
orifice varies in order to create the BTU's. The holes in the orifices themselves are drilled to different sizes so as to allow
the proper amount of gas to flow through them. Please note the chart below as an easy reference for the various orifice
opening sizes for the different valves in the grill.
Natural Gas Conversion for Item#881611/Model# 720-0584A
2
720/730-0584A
Allen Key
6mm Nut Driver
6mm Wrench
Below tools are included in package:

Warning: Make sure all grill components are completely cool and gas supply is turned off and removed from grill
prior to performing the conversion.
2. Turn all knobs to OFF. Turn off LP gas supply and remove the LP cylinder from the grill cart. Remove the brass
adapter of the LP regulator from the manifold with a wrench.
Natural Gas Conversion for Item# Model# 720-0584A
1: Install the regulator hose (short hose) to the end of the regulator marked "OUT". Install the brass connector to the
other end of the regulator marked "IN". (If regulator, hose, and brass connector are pre-assembled, you may disregard
this step.
3
14mm wrench
NG Hose and Regulator Conversion
Tools required:
Phillips Head Screwdriver (+)
3. Install the NG regulator hose to the manifold and secure using a wrench. Tighten the NG regulator on the side panel
with two 5/32*10mm screws that pre-assemble on the NG regulator.

Main Burner Conversion
Tools required:
Steps：
1. Remove the rotisserie kit, warming rack, cooking grids, flame tamers, tube burners and question mark burner from
the two fireboxes.
2. Locate the orifice at the end of valve and remove by with adjustable Nut Driver.
The NG orifice is preassembled on the valve, behind the LP orifice.
Remove LP orifice for each of the main burners (total 3 tube burners + 1 question mark burner in small chamber).
3. Replace the tube burners and question mark burner and screw back into original position.
Natural Gas Conversion for Item# /Model# 720-0584A
4
Phillips Head Screwdriver (+)
6mm Nut Driver

Searing Side Burner Conversion
Tools required:
Natural Gas Conversion for Item# /Model# 720-0584A
The step-by-step instruction for converting the searing side burner’s orifice are stated below.
5
6mm Wrench
Phillips Head Screwdriver (+)
1. Remove the screw under C bracket to take off the C bracket, then remove the searing side burner LP
orifice with 6mm wrench.
2. Replace the NG orifice to the connector, then replace the C bracket to the original position.