Mr. Heater F236125 MH350FAET 3.6 kW Forced Air Electric Heater

1. Important Safety Information

Please read and understand all safety warnings and instructions before operating this electric heater. Failure to follow these instructions may result in electric shock, fire, property damage, or personal injury.

• Electrical Requirements: This heater requires a 240V, 15 Amp dedicated circuit and a NEMA 6-20R outlet. Do not attempt to use with a standard 120V outlet or adapter. Improper electrical connection can cause fire or electric shock.
• Placement: Always place the heater on a stable, level surface. Keep combustible materials such as furniture, pillows, bedding, papers, clothes, and curtains at least 3 feet (0.9 meters) from the front of the heater and away from the sides and rear.
• Supervision: Do not leave the heater unattended while in use. Always unplug the heater when not in use.
• Ventilation: Ensure adequate ventilation. Do not block air intakes or exhaust openings.
• Moisture: Do not use the heater in wet or moist locations, such as bathrooms, laundry areas, or near sinks. Never immerse the heater in water.
• Children and Pets: Keep children and pets away from the heater. The heater's surface can become hot during operation.
• Maintenance: Do not attempt to repair or modify the heater yourself. Refer all servicing to qualified service personnel.
• Power Cord: Do not run the power cord under carpeting or cover it with throw rugs, runners, or similar coverings. Arrange the cord away from traffic areas where it will not be tripped over.

2. Product Overview

2.1. Description

The Mr. Heater F236125 MH350FAET is a portable forced air electric heater designed for indoor use. It operates on a 240V electrical supply and features an adjustable barrel, an integral thermostat, and high and low heat settings. This unit is capable of heating areas up to 307 square feet, making it suitable for garages, workshops, and other similar spaces.

2.2. Key Features

• Integrated Thermostat for temperature control.
• Requires 240V, 15 Amp electrical supply.
• Vertically adjustable barrel to direct heat.
• Optional fan-only operation for air circulation.
• High and low heat settings for varied output.
• Heating coverage up to 307 square feet.

Figure 1: Front view of the Mr. Heater F236125 MH350FAET Electric Heater, showing the fan and control panel.

3. Setup and Installation

1. Unpacking: Carefully remove the heater from its packaging. Inspect the unit for any signs of damage. If damage is found, do not operate the heater and contact customer support.
2. Placement: Choose a suitable location for the heater. Ensure it is on a firm, level surface and at least 3 feet (0.9 meters) away from any walls, furniture, or other combustible materials. Do not place the heater directly under a power outlet.
3. Electrical Connection: This heater requires a 240V, 15 Amp electrical supply with a NEMA 6-20R receptacle. Verify that your electrical system can support these requirements. Do not use extension cords or power strips. If you are unsure about your electrical setup, consult a qualified electrician.
4. Adjust Barrel (Optional): The heater features a vertically adjustable barrel. You can tilt the heater body on its stand to direct the airflow as needed.

Figure 2: Side view of the Mr. Heater F236125 MH350FAET Electric Heater, highlighting its portable design and stand.

4. Operating Instructions

1. Plug In: Ensure the heater is properly plugged into a 240V, 15 Amp NEMA 6-20R outlet.
2. Power On: Locate the control knob on the heater. It typically has settings for OFF, FAN ONLY, and HEAT + FAN. Turn the knob to the desired setting.
3. Select Heat Setting: If you choose HEAT + FAN, select either the high or low heat setting, if available on your model.
4. Set Thermostat: Adjust the thermostat knob to your desired temperature. The heater will cycle on and off to maintain the set temperature. The fan may continue to run even when the heating element is off to circulate air.
5. Fan Only Mode: To use the heater for air circulation without heat, select the FAN ONLY setting.
6. Power Off: When finished, turn the control knob to the OFF position and unplug the heater from the wall outlet. Allow the heater to cool down before moving or storing.

5. Maintenance

Regular maintenance ensures optimal performance and extends the life of your heater.

• Cleaning: Before cleaning, always unplug the heater and allow it to cool completely. Use a soft, damp cloth to wipe the exterior surfaces. Do not use abrasive cleaners or solvents.
• Dust Removal: Periodically use a vacuum cleaner with a brush attachment to remove dust from the air intake and exhaust grilles. This helps maintain efficient airflow.
• Storage: When storing the heater, ensure it is clean and dry. Store it in a cool, dry place, preferably in its original packaging, to protect it from dust and damage.
• Inspection: Regularly inspect the power cord and plug for any signs of damage. If the cord or plug is damaged, do not use the heater and contact qualified service personnel for repair.

6. Troubleshooting

If you experience issues with your Mr. Heater F236125 MH350FAET, refer to the following table for common problems and solutions.

7. Technical Specifications

8. Warranty and Support

For warranty information, technical support, or to inquire about replacement parts, please contact Mr. Heater customer service directly. Keep your purchase receipt and model number handy when contacting support.

You can typically find contact information on the manufacturer's official website or within the product packaging.