Introduction
The Hcalory 8KW Upgrade Toolbox Max Portable Diesel Air Heater is a versatile and efficient heating solution designed for various applications, including RVs, camping, and workshops. This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your heater. It features a robust design, multiple control options, and advanced safety features like CO detection and adaptive altitude mode.
Specifications
| Feature | Specification |
|---|---|
| Model | HCALORY Toolbox MAX |
| Heating Output | 8 kW |
| Fuel Tank Capacity | 7.5 Liters (Built-in) |
| Max. Operating Time | 62.5 hours (at lowest setting) |
| Coverage Area | Up to 25 m² |
| Heating Time | 3 minutes (fast heat) |
| Power Supply | 12V / 24V DC / 100~240V AC |
| Altitude Mode | Adaptive up to 5500 m (Automatic Adjustment) |
| Safety Features | CO detection, Overheating protection (≥270°C) |
| Switch Type | LCD Switch |
| Special Features | Support Wireless Temperature Sensor, Bluetooth APP Control, Remote Control |
| Item Dimensions (L x W x H) | 53cm x 34.5cm x 47cm |
| Item Weight | 13 kg |
| Material | Metal and Plastic |
| Certification | CE |
Package Contents
Ensure all items are present and undamaged upon unpacking:
- 1 x Heater Host
- 1 x AC-DC Power Supply (Optional purchase)
- 1 x LCD Switch
- 1 x Remote Control
- 1 x Controller Extension Cord
- 1 x User Manual
- 1 x Wire Harness
- 1 x Exhaust Silencer
- 1 x Exhaust Pipe
- 1 x Air Outlet Pipe
- 1 x Vents
- 1 Set Fixture Accessories
- 1 Set Bottom Bracket
- 1 Set Bottom Support

Setup Instructions
Follow these steps to set up your Hcalory Toolbox Max heater:
- Placement: Position the heater on a stable, level surface. Ensure adequate clearance around the unit for proper airflow and heat dissipation. The weatherproof housing allows for outdoor use, but protect from direct heavy precipitation if possible.
- Exhaust System: Connect the exhaust pipe to the heater's exhaust port and secure it with the provided clamps. Attach the exhaust silencer to the end of the exhaust pipe. Ensure the exhaust is directed away from any flammable materials, living spaces, or air intakes.
- Air Intake/Outlet: Connect the air outlet pipe to the heater's hot air outlet. If using an air intake pipe (not explicitly listed but common for combustion air), connect it to the designated intake port. Ensure vents are clear.
- Fuel: Fill the built-in 7.5L fuel tank with diesel fuel. Do not overfill.
- Power Connection:
- For AC power: Connect the AC-DC power supply to the heater and then plug it into a 100-240V AC power outlet.
- For DC power: Connect the wire harness to the heater and then to a 12V or 24V DC power source (e.g., vehicle battery).
- Control Unit Connection: Connect the LCD Switch and/or the Controller Extension Cord for the remote control to the designated ports on the heater.

Operating Instructions
The Hcalory Toolbox Max offers multiple control methods for convenience.
Starting the Heater
- Ensure the heater is properly set up and connected to a power source.
- Turn on the heater using the LCD Switch, remote control, or via the Bluetooth APP.
- Select your desired temperature setting. The heater is designed for 3-minute fast heating.
Control Methods
- LCD Panel Control: Use the integrated LCD switch to adjust settings, monitor status, and turn the unit on/off.
- Remote Control: Utilize the provided remote control for convenient operation from a distance.
- Bluetooth APP Control: Download the Hcalory app to your smartphone. Connect via Bluetooth to monitor real-time status and control functions such as Altitude Mode, Temperature Setting, Timer Function, Fan Mode, and Automatic Start/Stop.
- Wireless Temperature Sensor: The heater supports a wireless temperature sensor for accurate temperature monitoring and control.
Special Features
- Altitude Mode: The heater features an adaptive plateau mode that automatically adjusts the ratio of air to diesel fuel for full combustion, ensuring optimal performance at altitudes up to 5500 meters.
- CO Alarm Sensor: For your safety, the heater includes a CO detection system with automatic shutdown if carbon monoxide levels become unsafe.
- Low Noise Operation: Designed for reduced volume, making it suitable for nighttime use (approx. 65dB).



Maintenance
Regular maintenance ensures the longevity and efficient operation of your heater.
- Fuel Level: Regularly check the diesel fuel level in the 7.5L tank and refill as needed.
- Cleaning: Keep the exterior of the heater clean. Periodically check and clean the air intake and exhaust ports to ensure they are free from obstructions.
- Filter Check: If applicable, inspect and clean or replace air filters according to manufacturer recommendations to maintain optimal airflow and combustion efficiency.
- General Inspection: Before each use, visually inspect the heater for any signs of damage, loose connections, or wear and tear.
Troubleshooting
This section addresses common issues you might encounter with your heater.
- CO Warning Appears: If the CO alarm sensor activates, immediately ventilate the room and switch off the heater. Do not re-enter the area until it is thoroughly aired out and the CO levels are safe.
- Automatic Shutdown: If the heater shuts down automatically, check for CO levels and ensure proper ventilation. Overheating protection (≥270°C) can also trigger an automatic shutdown; allow the unit to cool down.
- Performance Drop at Altitude: The heater's plateau mode automatically adjusts for high altitudes up to 5500m. If you notice a performance drop, ensure the unit is operating within its specified altitude range.
- APP Connection Problems: If you experience issues connecting to the app via Bluetooth, ensure your device is within the maximum Bluetooth range (approx. 10 meters) and that Bluetooth is enabled on both devices.
Safety Note: If a CO warning is given, ventilate your room immediately and leave your room.
User Tips
- Optimize Control: Utilize the Bluetooth app for convenient remote control and real-time monitoring of your heater's status and settings.
- High-Altitude Performance: Take advantage of the automatic altitude mode for consistent heating performance when operating in mountainous or high-elevation areas.
- Ensure Ventilation: Always ensure adequate ventilation when operating the heater, especially in enclosed spaces, to prevent CO buildup and ensure safety.
- Fuel Efficiency: The heater boasts 36% higher efficiency. To maximize fuel savings, use the auto start-stop feature and monitor fuel consumption via the app if available.
Warranty and Support
For any questions, technical assistance, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt and product model information handy when contacting support.





