Franke HT-300

Franke HT-300 Little Butler Instant Hot Water Heating Tank

Model: HT-300 | Brand: Franke

1. Product Overview

The Franke HT-300 Little Butler is an under-sink instant hot water heating tank designed to provide near-boiling water on demand. It is intended for use with Franke hot-only and 3-in-1 hot/cold water filtration faucets, reducing waiting time and water waste.

Key Features

Provides instant hot water from your Point-of-Use (POU) faucet.
Heats up to 60 cups per hour.
Adjustable temperature dial, with a maximum temperature of 194 degrees Fahrenheit (90 degrees Celsius).
Features a 5/8 gallon stainless steel tank.
Operates at 1300 watts for efficient heating.
Compact dimensions: 7.8 inches (left-to-right) x 9.4 inches (front-to-back) x 11.6 inches (top-to-bottom).

Figure 1: Franke HT-300 Little Butler Instant Hot Water Heating Tank. This image shows the compact silver and black unit with its temperature setting dial and model number clearly visible.

2. Important Safety Instructions

Please read all instructions thoroughly before installing or using this appliance. Failure to follow these instructions may result in electric shock, fire, or serious injury.

Do not operate this unit if it has a damaged cord or plug, if it is not working properly, or if it has been dropped or damaged.
Ensure the unit is properly grounded to prevent electrical shock.
Do not install the unit in an area where the temperature may drop below freezing.
Use only with potable (drinkable) water.
Always disconnect power to the unit before performing any service or maintenance.
Hot water can cause scalding. Exercise extreme caution when dispensing hot water.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

3. Package Contents

Verify that all components are present before beginning installation:

Franke HT-300 Heating Tank (1 unit)
Mounting hardware (screws, brackets)
Instruction Manual (this document)
Connection hoses (may vary, additional hoses may be needed depending on existing plumbing)

4. Installation Guide

Before You Begin

Ensure adequate space under the sink for the tank, considering its dimensions (7.8" W x 9.4" D x 11.6" H).
Verify access to a standard 120V, grounded electrical outlet within reach of the tank's power cord.
Confirm that the main water supply shut-off valve is accessible and functioning.
Gather necessary tools: adjustable wrench, screwdriver, bucket, towels.

Figure 2: Dimensions of the Franke HT-300 Heating Tank. This diagram illustrates the height, width, and depth of the unit, crucial for planning installation space under the sink.

Step-by-Step Installation

Turn Off Water and Power: Locate and turn off the main water supply valve to your sink. If there's an existing hot water dispenser, unplug it from the electrical outlet.
Mount the Tank: Position the heating tank securely under the sink. Use the provided mounting hardware to attach it to the cabinet wall or floor, ensuring it is stable and level.
Connect Water Lines: Connect the cold water supply line to the tank's inlet fitting. Connect the hot water outlet from the tank to your Franke hot water faucet. Ensure all connections are tight to prevent leaks. Additional water supply hoses may be required depending on your existing plumbing setup.
Flush the System: Before plugging in the unit, turn on the cold water supply to the sink. Open the hot water faucet and allow water to flow through the system for at least 2-3 minutes to purge air and flush out any debris. Close the hot water faucet once a steady stream of water is observed.
Check for Leaks: Carefully inspect all connections for any signs of leaks. Tighten fittings as necessary.
Connect Power: Plug the heating tank's power cord into a grounded 120V electrical outlet. The unit will begin to heat the water.

5. Operating Your Heating Tank

Initial Startup

After installation and plugging in the unit, allow approximately 15-20 minutes for the tank to heat the water to the factory preset temperature. The indicator light on the front of the unit will illuminate when heating.

Temperature Adjustment

The water temperature can be adjusted using the dial located on the front of the tank. Rotate the dial towards 'MAX' for hotter water (up to 194°F / 90°C) or 'MIN' for cooler water. Adjust the dial slowly and test the water temperature before use to avoid scalding.

Figure 3: Close-up of the temperature setting dial on the Franke HT-300. The dial allows users to adjust the water temperature between minimum and maximum settings.

6. Maintenance and Care

Regular Cleaning

Wipe the exterior of the tank with a soft, damp cloth. Do not use abrasive cleaners, solvents, or harsh chemicals, as these can damage the finish.

Filter Replacement (If Applicable)

If your system includes a water filtration component, refer to the specific filter's instructions for recommended replacement intervals. Franke offers an optional FM100 in-line monitor and a free smartphone application to help track and remind you when filter replacement is due.

Draining the Tank

For extended periods of non-use (e.g., vacations) or before servicing, the tank may need to be drained. To drain, disconnect power, turn off the water supply, and open the hot water faucet to relieve pressure. Then, disconnect the water lines from the tank and allow it to drain into a bucket. Consult a qualified plumber if you are unsure about this procedure.

7. Troubleshooting Guide

This section provides solutions to common issues you might encounter with your Franke HT-300 heating tank.

Problem	Possible Cause	Solution
No hot water	Unit not plugged in or no power. Water supply to tank is off. Tank has not filled with water.	Check power connection and circuit breaker. Ensure water supply valve to the tank is fully open. Open hot water faucet to allow tank to fill; close once water flows steadily.
Water not hot enough	Temperature setting is too low. Tank is undersized for demand.	Adjust the temperature dial towards 'MAX'. Allow more time between uses for the tank to reheat.
Leaking from unit or connections	Loose water line connections. Damaged tubing or internal component.	Turn off water supply and power. Tighten all water line connections. If leaks persist, disconnect power and water supply, then contact Franke customer support or a qualified plumber.
Slow heating or reduced flow	Sediment buildup in tank (over long-term use). Partially closed water supply valve.	For sediment, professional descaling may be required. Contact a plumber. Ensure water supply valve is fully open.

8. Technical Specifications

Feature	Detail
Model	HT-300
Dimensions (H x W x D)	11.6 in x 7.8 in x 9.4 in (29.5 cm x 19.8 cm x 23.9 cm)
Weight	9.2 lbs (4.17 kg)
Tank Capacity	5/8 Gallon (approx. 2.37 Liters)
Heating Capacity	Up to 60 cups per hour
Max Temperature	194°F (90°C)
Wattage	1300 Watts
Power Requirement	120V AC, 60 Hz, Grounded Outlet
Tank Material	Stainless Steel

9. Warranty and Customer Support

Franke products are manufactured to the highest quality standards and are backed by a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Franke website.

For technical assistance, troubleshooting support, or to inquire about replacement parts, please contact Franke customer service. Contact information can typically be found on the product packaging or on the Franke website.