1. Product Overview
The Bunn 44400.0100 Sure Immersion Model 220 is a commercial-grade bean-to-cup coffee brewer designed for high-volume environments. It features two independent 3 lb hoppers with precision burr grinders, air infusion extraction control for optimal flavor, and a user-friendly 10-inch color touchscreen interface. This brewer offers five customizable portion sizes and a dedicated hot water button for versatility.

Image 1.1: Front view of the Bunn 44400.0100 Sure Immersion Model 220 Bean to Cup Coffee Brewer. The image displays the sleek stainless steel and black design, highlighting the large touchscreen display and the two bean hoppers at the top.
2. Setup Instructions
2.1 Unpacking
Carefully remove the brewer from its packaging. Inspect for any shipping damage. Retain all packaging materials for future transport or service needs.
2.2 Placement
Place the brewer on a stable, level surface capable of supporting its weight. Ensure adequate clearance around the unit for ventilation and access. The brewer requires a dedicated 120V, 60Hz, 1-phase electrical supply with a 15 Amp circuit, utilizing a NEMA 5-15P plug. Ensure the electrical outlet is properly grounded.
2.3 Initial Cleaning
Before first use, wipe down all exterior surfaces with a damp cloth. Clean the bean hoppers and drip tray with mild soap and water, then rinse thoroughly and dry completely. Note: This appliance is not dishwasher safe.
2.4 Hopper Installation and Water Connection
- Ensure the two 3 lb bean hoppers are clean and dry. Place them securely into their designated slots on top of the brewer.
- Connect the brewer to a potable cold water supply using appropriate plumbing connections. It is recommended to use a water filter to prevent mineral buildup. Refer to local plumbing codes for installation requirements.
3. Operating the Brewer
3.1 Powering On and Initial Start-up
Plug the brewer into the dedicated electrical outlet. The 10-inch color touchscreen will illuminate. Follow any on-screen prompts for initial setup, such as language selection or date/time settings.
3.2 Loading Coffee Beans
Open the lids of the two 3 lb hoppers. Pour fresh, whole coffee beans into each hopper. The brewer features independent grinders, allowing for different bean types in each hopper if desired.
3.3 Brewing Coffee
- Place a suitable coffee cup or carafe under the dispense spout.
- On the 10-inch color touchscreen, select your desired coffee type (if configured) and portion size from the five available options.
- Press the "Brew" button on the touchscreen. The brewer will automatically grind the beans, initiate the air infusion extraction process, and dispense the coffee.
- Wait for the brewing cycle to complete before removing the cup or carafe.
3.4 Dispensing Hot Water
To dispense hot water, place a cup under the hot water spout and press the dedicated "Hot Water" button on the touchscreen. Press the button again to stop the flow.
4. Maintenance and Cleaning
Regular maintenance ensures optimal performance and longevity of your Bunn Sure Immersion Model 220 brewer. Always unplug the brewer before performing any cleaning or maintenance.
4.1 Daily Cleaning
- Wipe down the exterior surfaces, including the touchscreen, with a soft, damp cloth.
- Empty and clean the drip tray.
- Remove and clean the dispense spout assembly.
4.2 Weekly Cleaning
- Clean the bean hoppers thoroughly, ensuring no residual coffee oils or grounds remain.
- Clean the grinding chambers. Refer to the on-screen menu for specific grinder cleaning cycles or instructions.
4.3 Descaling
Depending on water hardness, descaling may be required periodically to remove mineral buildup. The brewer's touchscreen may indicate when descaling is necessary. Use a commercial descaling solution specifically designed for coffee brewers and follow the manufacturer's instructions carefully. Do not use vinegar as it may damage internal components.
5. Troubleshooting
This section addresses common issues you might encounter with your Bunn Sure Immersion Model 220 brewer. For problems not listed here, contact Bunn customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Brewer does not power on. | No power supply; tripped circuit breaker. | Ensure the power cord is securely plugged in. Check the circuit breaker and reset if necessary. |
| No coffee dispenses. | No water supply; empty bean hoppers; clogged grinder/spout. | Verify water supply is connected and turned on. Refill bean hoppers. Clean the grinder and dispense spout. |
| Coffee tastes weak or watery. | Incorrect grind setting; insufficient coffee beans; descaling needed. | Adjust grind setting via touchscreen. Ensure hoppers have sufficient beans. Perform descaling if prompted or overdue. |
| Touchscreen unresponsive. | Temporary software glitch. | Unplug the brewer for 30 seconds, then plug it back in to perform a soft reset. |
6. Technical Specifications
| Feature | Detail |
|---|---|
| Brand | Bunn |
| Model Number | 44400.0100 |
| Color | Stainless/Black |
| Special Feature | Integrated Coffee Grinder, Air Infusion Extraction Control |
| Coffee Maker Type | Drip Coffee Machine (Bean-to-Cup) |
| Style | Modern |
| Operation Mode | Fully Automatic |
| Number of Items | 1 |
| Human Interface Input | Buttons, 10" Color Touchscreen |
| Unit Count | 1.0 Count |
| Global Trade Identification Number (GTIN) | 00072504124360 |
| Coffee Input Type | Whole Beans |
| Dishwasher Safe | No |
| Manufacturer | Bunn |
| UPC | 072504124360 |
| ASIN | B084SSN4VX |
| Capacity | Two 3 lb Hoppers, 5 Portion Sizes |
| Electrical Requirements | 120V, 60Hz, 1-phase, 15.0 Amps, 1.8kW, NEMA 5-15P |
7. Warranty and Customer Support
7.1 Warranty Information
Specific warranty details for the Bunn 44400.0100 Sure Immersion Model 220 are typically provided with the product documentation at the time of purchase. Please refer to the warranty card or contact Bunn customer service for comprehensive information regarding warranty coverage, terms, and conditions.
7.2 Customer Support
For technical assistance, service, or to order replacement parts, please contact Bunn customer support. Contact information can usually be found on the Bunn official website or in the documentation included with your brewer.
8. Product Videos
No official seller videos were provided for this product in the available data. Please refer to the manufacturer's website for any instructional videos or demonstrations.





