1. Introduction and Overview
Thank you for choosing the STANLEY ST-70T-KFA-E Liquid Fuel/Diesel Heater. This versatile, multi-fuel heater is designed to provide efficient and reliable heating for various spaces such as workshops, garages, and barns. This manual provides essential information for the safe and effective operation, setup, and maintenance of your heater.
The ST-70T-KFA-E model features an adjustable thermostat, a main power switch, an error indicator light, and a fuel gauge. For your safety, it includes an automatic shutdown function in case of overheating or flame failure. This unit is capable of heating areas up to 385 cubic meters.

Image 1.1: Front view of the STANLEY ST-70T-KFA-E Liquid Fuel/Diesel Heater.
This heater is designed for ease of assembly and use, ensuring you can quickly set it up to meet your heating needs.
2. Important Safety Information
Please read and understand all safety warnings and instructions before operating this heater. Failure to follow these instructions may result in fire, explosion, electric shock, or serious injury.
- Ventilation: Always ensure adequate ventilation when operating the heater. This heater consumes oxygen and produces combustion by-products. Do not use in unventilated or residential areas.
- Fuel: Use only approved fuels as specified in this manual. Never use gasoline or other highly volatile fuels.
- Clearance: Maintain safe distances from combustible materials. Refer to the product labels for specific clearance requirements.
- Placement: Operate the heater on a stable, level, non-combustible surface. Do not place the heater near curtains, drapes, or other flammable fabrics.
- Electrical Connection: Ensure the power supply matches the heater's requirements. Use a grounded outlet and avoid using extension cords unless absolutely necessary and rated for the heater's power.
- Supervision: Never leave the heater unattended while operating. Keep children and pets away from the heater.
- Overheat Protection: The heater is equipped with an automatic overheat protection system that will shut off the unit if it becomes too hot. Do not bypass or tamper with this safety feature.
- Flame Failure: The heater will automatically shut down if the flame extinguishes during operation.
- Maintenance: Disconnect the heater from the power supply and allow it to cool completely before performing any maintenance or cleaning.
3. Product Components
Familiarize yourself with the main components of your STANLEY ST-70T-KFA-E heater:

Image 3.1: Labeled diagram showing the main parts of the heater.
- Handle: For easy transportation of the unit.
- Hot Air Outlet: Where heated air is expelled.
- Pressure Gauge: Displays the internal operating pressure.
- Thermostat: Adjustable dial to set the desired temperature.
- Fuel Cap: Covers the fuel tank opening for refilling.
- Power On/Off Switch: Controls the main power to the unit.
- Fuel Tank: Reservoir for liquid fuel.
- Power Plug: Connects the heater to an electrical outlet.

Image 3.2: Side view showing the control panel and fuel tank.
4. Setup Instructions
The STANLEY ST-70T-KFA-E heater is designed for easy setup. Follow these steps to prepare your heater for operation:
- Unpacking: Carefully remove the heater from its packaging. Inspect for any shipping damage.
- Placement: Position the heater on a firm, level, non-combustible surface. Ensure there is adequate clearance from walls, ceilings, and any combustible materials as specified in the safety section and on the product labels.
- Ventilation: Confirm the operating area has sufficient ventilation to prevent oxygen depletion and the buildup of combustion by-products.
- Fueling: Unscrew the fuel cap and carefully fill the fuel tank with the appropriate fuel (see Section 6). Do not overfill. Use a funnel to prevent spills. Securely replace the fuel cap.
- Electrical Connection: Plug the power cord into a grounded electrical outlet that matches the heater's voltage and current requirements.
5. Operating Instructions
Once the heater is set up and fueled, follow these steps to operate it:
- Set Thermostat: Turn the thermostat dial to the desired temperature setting. The heater will cycle on and off to maintain this temperature.
- Power On: Flip the main Power On/Off switch to the 'ON' position. The heater should start, and the fan will begin to operate.
- Ignition: The heater will attempt to ignite the fuel. If ignition is successful, you will hear the burner operating and feel warm air from the outlet.
- Error Indicator: If the heater fails to ignite or encounters an issue, an error indicator light may illuminate. Refer to the troubleshooting section if this occurs.
- Shutting Down: To turn off the heater, simply flip the main Power On/Off switch to the 'OFF' position. The fan may continue to run for a short period to cool down the unit before completely shutting off.

Image 5.1: Close-up view of the adjustable thermostat dial.
6. Fuel Information
The STANLEY ST-70T-KFA-E is a multi-fuel heater. It is compatible with the following fuel types:
- Diesel #1 and #2
- Aviation Fuel A and JP-8
- Kerosene / CLAMC
Important: Never use gasoline, paint thinners, alcohol, or any other highly flammable or unapproved fuels. Using incorrect fuel can lead to fire, explosion, and severe damage to the heater, voiding the warranty.
The heater is equipped with a fuel gauge to monitor the fuel level in the tank.

Image 6.1: Close-up view of the fuel gauge, indicating fuel level.
7. Maintenance
Regular maintenance ensures the longevity and safe operation of your heater. Always disconnect the heater from the power supply and allow it to cool completely before performing any maintenance.
- General Cleaning: Keep the exterior of the heater clean. Wipe with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Air Filter: Periodically check and clean the air intake filter to ensure proper airflow. A clogged filter can reduce efficiency and cause overheating.
- Fuel Filter: Inspect the fuel filter for debris and replace it if necessary. Refer to the service manual for detailed instructions on accessing and replacing internal components.
- Nozzle Cleaning: If the heater is not burning cleanly or producing excessive smoke, the fuel nozzle may need cleaning or replacement. This should ideally be performed by a qualified technician.
- Storage: When storing the heater for extended periods, ensure the fuel tank is empty and clean. Store in a dry, safe location.
8. Troubleshooting
If you encounter issues with your STANLEY ST-70T-KFA-E heater, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Heater does not start or ignite. | No power; no fuel; incorrect thermostat setting; clogged fuel line/filter; ignition failure. | Check power connection; ensure fuel tank is filled; set thermostat above ambient temperature; check fuel filter; consult a technician if ignition system fails. |
| Heater starts but shuts off after a short period (e.g., 20 seconds). | Low fuel; flame sensor issue; incorrect fuel pressure; overheating; insufficient ventilation. | Check fuel level; ensure proper ventilation; verify fuel pressure (see pressure gauge); allow unit to cool if overheat protection activated; consult a technician for flame sensor or pressure issues. |
| Strong gas/fuel odor during operation. | Incomplete combustion; poor ventilation; fuel leak. | Ensure adequate ventilation; check for proper flame; inspect for any fuel leaks; if odor persists, discontinue use and have unit inspected by a qualified technician. |
| Error indicator light is on. | Various internal faults (e.g., flame failure, overheating, sensor error). | Turn off the heater, unplug it, wait 5 minutes, then plug it back in and restart. If the error persists, consult a qualified technician. |
The heater includes a pressure gauge to monitor internal operating pressure, which can be useful for diagnosing certain issues.

Image 8.1: Close-up view of the pressure gauge, showing PSI and BAR readings.
9. Specifications
| Feature | Specification |
|---|---|
| Model Number | ST-70T-KFA |
| Brand | STANLEY |
| Power Output | 20.515 Watt |
| Dimensions (L x W x H) | 36 x 28 x 36 cm |
| Weight | 12.7 kg |
| Fuel Type | Kerosene, Diesel #1 & #2, Aviation Fuel A & JP-8, CLAMC |
| Heat Coverage | Up to 385 cubic meters |
| Special Features | Overheat protection, Adjustable thermostat |
| Electrical Plug Type | EU Plug (Montage au sol - Floor Mount) |
| UPC | 657888110705 |
10. Warranty and Support
Specific warranty information for the STANLEY ST-70T-KFA-E heater is not provided in this manual. Please refer to the documentation included with your purchase or contact STANLEY customer support for details regarding warranty coverage and service.
For technical assistance, spare parts, or further inquiries, please visit the official STANLEY website or contact their customer service department. Always provide your model number (ST-70T-KFA) and UPC (657888110705) when seeking support.





