Introduction
This instruction manual provides detailed guidance for the installation, operation, and maintenance of your Adviace grill replacement parts. These parts are specifically designed for Nexgrill 4 Burner models 720-0830H and 720-0830D, ensuring a perfect fit and restoring your grill's performance. Please read this manual thoroughly before proceeding with installation or use.

Image: This image illustrates the compatibility of the replacement parts with Nexgrill 4-burner models 720-0830H and 720-0830D, showing both grill types.
Included Components
Your Adviace grill replacement kit includes the following components:
- 1 x Adjustable Drip Pan
- 4 x Porcelain Steel Heat Tents (Heat Plates)
- 4 x Stainless Steel Burner Tubes
- 2 x Matte Cast Iron Grill Grates
Setup and Installation
Before beginning installation, ensure your grill is completely cool and disconnected from its fuel source. It is recommended to wear protective gloves during installation.
1. Removing Old Components
- Open the grill lid and carefully remove the old grill grates.
- Lift out the old heat tents (flavorizer bars).
- Disconnect and remove the old burner tubes.
- Remove the old drip pan and grease tray.
2. Installing New Components
Drip Pan Installation
The adjustable drip pan is designed to fit lengths from 24'' to 27''.
- Assemble the drip pan components (A, B, C) as shown in the diagram, securing them with the provided screws.
- Adjust the length of the drip pan to fit your grill's firebox.
- Place the assembled drip pan into the bottom of the grill firebox.
- Position the catch pan (D) underneath the drip pan's drain hole.

Image: This diagram illustrates the four-step process for assembling and installing the adjustable grease tray and catch pan.
Burner Tube Installation
- Carefully insert each new stainless steel burner tube into its corresponding gas valve orifice.
- Ensure the burner tubes are properly seated and aligned.
Heat Tent Installation
- Place the porcelain steel heat tents directly over the burner tubes.
- Ensure they are securely resting on their supports.
Grill Grate Installation
- Carefully place the two matte cast iron grill grates onto the grill supports above the heat tents.
- Ensure they are level and stable.
Operating Instructions
After installing the new components, perform a leak test on all gas connections before first use. Refer to your grill's original manual for specific lighting procedures.
Grill Grate Features
The cast iron grill grates feature narrow gaps between rods, designed to prevent small food items from falling through while providing excellent searing capabilities for professional sear marks.

Image: This close-up shows food grilling on the cast iron grates, highlighting the narrow rod design for preventing food loss and achieving sear marks.
Maintenance and Care
Regular cleaning and maintenance will extend the life of your replacement parts and ensure optimal grilling performance.
Cleaning Grill Grates
- After each use, clean the cast iron grates with a grill brush while they are still warm.
- For deeper cleaning, remove the grates and wash with warm soapy water. Dry thoroughly to prevent rust.
- Season cast iron grates periodically with cooking oil to maintain their non-stick properties and prevent rust.
Cleaning Heat Tents and Burner Tubes
- Periodically inspect heat tents and burner tubes for grease buildup or blockages.
- Remove heat tents and clean with a scraper or stiff brush. The porcelain steel material offers strong corrosion and heat resistance, making them easy to clean.
- Clean burner ports with a wire brush or a stiff wire to ensure even flame distribution.

Image: This image demonstrates the effectiveness of cleaning heat plates, showing a 'Before' state with heavy residue and an 'After' state with clean plates. Dimensions are also shown.

Image: This image highlights the key features of the porcelain steel heat plates, including their resistance to corrosion and heat, ease of installation, and non-toxic properties.
Cleaning Drip Pan
- The stainless steel drip pan features angled sides and a sloped center channel to direct grease to the catch pan.
- Regularly empty and clean the catch pan.
- Remove the drip pan and wash with warm soapy water. Its design helps prevent leaks and simplifies cleaning.
Troubleshooting Common Issues
If you encounter issues after installing your replacement parts, consider the following:
- Uneven Heating: Check burner tubes for blockages or misalignments. Ensure all burner ports are clear.
- Low Flame: Verify gas supply and connections. Ensure burner tubes are fully seated over the gas valve orifices.
- Grease Leaks: Ensure the adjustable drip pan is correctly assembled and adjusted to the proper length. Confirm the catch pan is positioned correctly.
- Rust on Grates: Ensure cast iron grates are thoroughly dried after cleaning and seasoned periodically with cooking oil.
Product Specifications
| Component | Dimensions | Material |
|---|---|---|
| Burner Tubes | 14 7/8" L x 1" Dia | Stainless Steel |
| Heat Plates (Heat Tents) | 14 9/16" L x 4 3/16" W | Porcelain Steel |
| Grill Grates (each) | 17" L x 13 1/4" W | Matte Cast Iron |
| Grill Grates (total for 2 Pcs) | 17" L x 26 1/2" W | Matte Cast Iron |
| Adjustable Drip Pan | Adjusts from 24" to 27" L, 15 1/2" W | Stainless Steel |
| Drip Pan Catch Pan | 9 1/4" L x 7" W x 1 3/16" H | Stainless Steel |

Image: This diagram provides the precise dimensions for the cast iron grill grates, both individually and combined.

Image: This image details the dimensions of the adjustable grease tray and its accompanying catch pan, emphasizing the adjustable length feature.

Image: This image displays a burner tube and its specific dimensions, including length and diameter.
Warranty and Support
For any questions regarding installation, maintenance, or product performance, please contact Adviace customer support. While specific warranty details are not provided in this manual, please refer to your purchase documentation or the Adviace website for warranty information.
You can visit the Adviace Store for more products and support: Adviace Store on Amazon.